Consulta: subjectFacets:"Effluent"
Registros recuperados: 30
Data/hora: 06/06/2024 00:49:36

CHANGES IN SOIL CHEMICAL PROPERTIES PROMOTED BY FERTIGATION WITH TREATED SANITARY WASTEWATER
Provedor de dados: 70
Autores: Santos,Silvânio R.; Ribeiro,Danilo P.; Matos,Antonio T.; Kondo,Marcos K.; Araújo,Edcássio D.
ABSTRACT We evaluate the application of treated sanitary wastewater (TSW) to provide potassium for crops and reduce demand for fresh water and mineral nutrients. The field experiment was arranged in randomized block design with four replications and five treatments: 50, 100, 150 and 200% of potassium requirements and a control with conventional fertilizer. The TSW was applied to maize (November 2012 to February 2013), cotton (June to November 2013) and bean (April to June 2014). After bean, soil chemical properties were evaluated until 0.8 m depth. Fertigation with TSW to potassium fertilization provided about 50% of water, nitrogen and phosphorus to the bean. The soil nutrient availability and soil organic matter did not increase, whereas sodium had...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Effluent; Fertilization; Irrigation; Sewage; Sodium.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162017000200343

Genotoxicity biomonitoring of sewage in two municipal wastewater treatment plants using the Tradescantia pallida var. purpurea bioassay
Provedor de dados: 74
Autores: Thewes,Márcia Regina; Endres Junior,Delio; Droste,Annette.
The genotoxicity of untreated and treated sewage from two municipal wastewater treatment plants (WTP BN and WTP SJN) in the municipality of Porto Alegre, in the southern Brazilian state of Rio Grande do Sul, was evaluated over a one-year period using the Tradescantia pallida var. purpurea (Trad-MCN) bioassay. Inflorescences of T. pallida var. purpurea were exposed to sewage samples in February (summer), April (autumn), July (winter) and October (spring) 2009, and the micronuclei (MCN) frequencies were estimated in each period. The high genotoxicity of untreated sewage from WTP BN in February and April was not observed in treated sewage, indicating the efficiency of treatment at this WTP. However, untreated and treated sewage samples from WTP SJN had high...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Effluent; Micronucleus; Mutagenicity; Pollution; Trad-MCN.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572011000400023

Open-air treatment of wastewater from land-based marine fish farms in extensive and intensive systems: current technology and future perspectives
Provedor de dados: 5
Autores: Hussenot, Jerome; Lefebvre, Sébastien; Brossard, Nicolas.
Marine land-based fish farms located in coastal wetlands (salt-pond zones, lagoon banks, etc.), whether extensive or intensive, send farm effluents directly to the sea or after short periods of stocking in retention reservoirs. The aims of our investigation have been to compare the efficiency of current and potential water treatment procedures in open-air. Wastewater retention ponds in commercial farms (Atlantic coasts of France) are efficient in removing up to 1 metric ton of particulate material (dry weight) per hectare and per day (faeces and unconsumed feed), but are inefficient in reducing dissolved wastes, both organic (urea, amino acids, protein) and inorganic (total ammonia nitrogen, phosphates). Forthcoming outdoor technology to treat these forms...
Tipo: Text
Palavras-chave: Traitement de l'eau; Effluent; Décantation; Sédimentation; Écumage; Microalgue; Huître; Water treatment; Effluent; Aquaculture; Sedimentation; Foam fractionation; Microalgae; Oyster.
Ano: 1998
URL: https://archimer.ifremer.fr/doc/1998/publication-873.pdf

Development of a biologically based environmental quality standard from a long-term benthic monitoring programme in the North Sea
Provedor de dados: 5
Autores: Brown, Ar; Shillabeer, N.
The paper describes the derivation and effectiveness of a benthic macrofauna environmental quality standard (EQS). The EQS is derived from a continuing, long-term (24 years) monitoring programme, designed to determine the effect of mining effluent discharged into coastal waters off the NE coast of England. The area under study is at the Cleveland Potash mine at Boulby. Benthic monitoring began there in 1970 and live years of baseline data were gathered before discharge commenced in 1974. During the course of the monitoring programme (1970-1993) annual surveys have been completed at the discharge point and at more distant reference sites. The complete data set includes results from over 1000 benthic grab samples. The effect of the discharge is clearly...
Tipo: Text
Palavras-chave: Long-term; Monitoring; Benthos; Effluent; EQS.
Ano: 1997
URL: http://archimer.ifremer.fr/doc/00093/20454/18126.pdf

Guide méthodologique pour l'élaboration des dossiers de demande d'autorisation d'Installations Classées pour la Protection de l'Environnement (ICPE) en matière de pisciculture marine pour la région Corse
Provedor de dados: 5
Autores: Roque D'Orbcastel, Emmanuelle; Sauzade, Didier; Ravoux, Georges; Coves, Denis.
Sea fish farms with production of more than 20 tons per year in France must obtain two operating licences: (i) one for Sea Farming (AECM), with the aim of ensuring that the granted site and use of the maritime public domain for exploitation will respect all restrictions of general interest; (ii) one for regulating Facilities Classified for the Protection of the Environment (ICPE). Although the first one requires a relatively simple licence request file, the second one demands a very complete file, which includes, beyond the notice of exploitation information, a complete impact study, as well as a hazards study and a health and safety notice. In this context, petitioners in Corsica (adjustment of status or new exploitation) are faced with the same...
Tipo: Text
Palavras-chave: Specifications; Study of dangers; Effluent; Potential impact; Impact survey; Exploitation; Demand; Marine fish culture; Corsica; Classified installations for the environment protection (CIEP); Methodological guide; Cahier des charges; Etude de dangers; Rejets; Impacts potentiels; Etude d'impact; Exploitation; Demandeur; Pisciculture marine; Corse; Installations Classées pour la Protection de l'Environnement (ICPE); Guide méthodologique.
Ano: 2004
URL: http://archimer.ifremer.fr/doc/2004/rapport-2188.pdf

Descriptif des stations d'épuration ayant un rejet à la mer. Proposition d'un système de contrôle définissant la qualité du milieu marin
Provedor de dados: 5
Autores: Burgeot, Thierry; Fillon, Alain.
La surveillance et le suivi de la qualité du milieu est une des missions essentielles confiées au Laboratoire CSRU. Au Laboratoire de La Rochelle, le problème de l'assainissement et en particulier des rejets en mer, dans les zones conchylicoles des effluents des stations d'épuration fait l'objet, depuis plusieurs années, d'un contrôle régulier. Chaque contrôleur assure cette tâche par des prélèvements, effectués dans les différentes stations de leur circonscription.
Tipo: Text
Palavras-chave: Station épuration; Rejet; Milieu marin; Effluent; Système contrôle.
Ano: 1985
URL: http://archimer.ifremer.fr/doc/00149/26029/24130.pdf

Effect of water exchange on effluent and sediment characteristics and on partial nitrogen budget in semi-intensive shrimp ponds in New Caledonia
Provedor de dados: 5
Autores: Lemonnier, Hugues; Faninoz, Sebastien.
An experiment was conducted in six earthen ponds with 20 shrimps m(-2) Litopenaeus stylirostris (Stimpson) during the warm season in New Caledonia to study the dynamics of wastes in relation with water exchange rate (WER). The nitrogen budget was established, taking into account the different forms of nitrogen in the water, sediment, feed and shrimp. Data from a wide range of treatments applied in unreplicated ponds were treated using regression analysis to establish the relationship between WER and partial nitrogen budget, sediment characteristics and shrimp performance. To compare effluent quality between treatments during the season, data were analysed using the non-parametric sign test. The water outflow was characterized by a decrease in the...
Tipo: Text
Palavras-chave: New Caledonia; Nitrogen; Water exchange; Shrimp; Sediment quality; Effluent.
Ano: 2006
URL: http://archimer.ifremer.fr/doc/2006/publication-1811.pdf

Mutagenicity and genotoxicity of suspended particulate matter in the Seine river estuary
Provedor de dados: 5
Autores: Hubert, Francoise; Moisan, Karine; Munschy, Catherine; Tronczynski, Jacek.
Highly mutagenic compounds such as some PAHs have been identified in surface waters and sediments of the Seine river estuary. Suspended particulate matter (SPM) represents a dynamic medium that may contribute to the exposure of aquatic organisms to toxic compounds in the water column of the estuary. In order to investigate major sources of mutagenic contaminants along the estuary, water samples were taken at 25 in downstream of the outlet of an industrial wastewater-treatment plant (WWTP). SPM samples were analyzed for their genotoxicity with two short-term tests, the Salmonella typhimurium mutagenicity assay (TA98 + S9 mix) and the comet assay in the human HepG2 cell line. Sampling sites receiving effluents from a chemical dye industry and WWTP showed the...
Tipo: Text
Palavras-chave: Ames test; Comet assay; Water pollution; Effluent; Suspended particulate matter; Seine estuary.
Ano: 2012
URL: http://archimer.ifremer.fr/doc/00072/18323/16013.pdf

Biofilter efficiency of Eichhornia crassipes in wastewater treatment of fish farming in Amazonia: Eficiencia de Eichhornia crassipes como biofiltro en el tratamiento de aguas residuales de la piscicultura en el Amazonas
Provedor de dados: 85
Autores: Rubim,MAL; Isolino Sampaio,PR; Parolin,P.
Fish is a very important part of the human diet in Amazonia. Near the growing cities, fish populations and individual size have decreased over the past decades. Alternatives to traditional and industrial fishing arise, including fish farming. Strategies to minimize the impact of fish farms on the environment are needed to have a regular and healthy fsh supply. This is to avoid a reduction of biodiversity, a depletion of natural resources, and/or the induction of significant changes in the structure and functioning of adjacent ecosystems. Very little research has been performed on management of efluents as to maintain the quality of water resources. The present study aimed at testing the efficiency of the Amazonian aquatic macrophyte Eichhornia crassipes as...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Aquaculture; Amazon; Effluent; Fish farming; Biofilters; Aquatic macrophytes; Water hyacinth.
Ano: 2015
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-56572015000100031

The Costs and Benefits of Effluent Management Compliance in the Waikato Region of New Zealand
Provedor de dados: 31
Autores: Gauntlett,   William.
Dairy farming in the Waikato Region has contributed greatly to the reduction of water quality. Part of this is attributable to the issue of inappropriate disposal of dairy effluent. Regional authority data shows both costs and benefits of complying with effluent management regulations. Private costs result from system and management improvements, while private benefits are largely due to reduced fertiliser requirements. Decreases in the volume of 'non-compliant effluent', resulting from improved compliance, are used as an indicator to illustrate reduced environmental effects. The benefits of becoming compliant outweigh the costs for half the farms analysed. More incentives are required to promote compliance from the other farms although their environmental...
Tipo: Conference Paper or Presentation
Palavras-chave: Dairy farming; Environment; Effluent; Compliance; Cost; Benefit.
Ano: 2009
URL: http://purl.umn.edu/48032

Derivation of supply curves for catchment water effluents meeting specific salinity concentration targets in 2050: linking farm and catchment level models or “Footprints on future salt / water planes”
Provedor de dados: 31
Autores: Nordblom,   Thomas L.; Bathgate,   Andrew D.; Young,   Robert A.
The salt burden in a stream reflects the blend of salty and fresh flows from different soil areas in its catchment. Depending not only on long-run rainfall, water yields from a soil are also determined by land cover: lowest if the area is forested and greatest if cleared. Water yields under agro-forestry, lucerne pasture, perennial grass pasture, and annual pasture or cropping options span the range of water yields between the extremes of forested and cleared lands. This study explores quantitative approaches for connecting the hydrologic and economic consequences of farm-level decisions on land cover (productive land uses) to the costs of attaining different catchment level targets of water volumes and salt reaching downstream users; environmental,...
Tipo: Conference Paper or Presentation
Palavras-chave: Salinity; Targets; Opportunity cost; Concentration; Dilution; Effluent; Externality; Supply; Demand; Policy; Water quality; New technology; New markets; Resource /Energy Economics and Policy.
Ano: 2003
URL: http://purl.umn.edu/57929

Changes in chemical attributes of a Fluvent cultivated with castor bean and irrigated with wastewater
Provedor de dados: 91
Autores: Barreto,Aurelir N.; Nascimento,Joab J. V. R. do; Medeiros,Everaldo P. de; Nóbrega,Janiny A. da; Bezerra,Jose R. C.
Agricultural use of wastewater is an alternative to increase water availability, especially in semiarid regions. However, it may cause undesirable chemical changes in the soil. The aim of this study was to evaluate the influence of wastewater irrigation and castor bean (Ricinus communis L.) cultivation on the chemical attributes of a Fluvic Neosol. The experimental design was in a randomized block, in split-plot scheme, where the main plots were represented by the treatments of irrigation water and castor bean cultivation, and the subplots were the soil layers, with three replications. The treatments were T1 - wastewater irrigation + castor bean cultivation ; T2 - mixture of supply water and wastewater (1:1 ratio) + castor bean cultivation; T3 - supply...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Reuse; Nutrients; Effluent; Water management; Ricinus communis.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662013000500003

Changes in chemical properties of distrophic Red Latosol as result of swine wastewater application
Provedor de dados: 91
Autores: Cabral,Juarez R.; Freitas,Paulo S. L. de; Rezende,Roberto; Muniz,Antonio S.; Bertonha,Altair.
Swine wastewater (SW) has characteristics that allow its disposal in the soil as a fertilizer. This is an alternative in order not to accumulate this material in the farm as well as it provides savings with mineral fertilizers. The aim of this study was to evaluate the effect of applying swine wastewater on the chemical properties of a distrophic Red Latosol for two seasons. The experiment was carried out under field conditions with treatments defined as T0 = 0 (control), T1 = 150, T2 = 300, T3 = 450, T4 = 600, T5 = 750 m3 ha-1 of SW applied during the crop cycle of elephant grass. SW application contributed to the increase of magnesium and phosphorus and the reduction of soil aluminum in the first season. As for the second season when compared to the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Effluent; Environmental impact; Leaching.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662014000200012

Soil chemical properties and maize yield under application of pig slurry biofertilizer
Provedor de dados: 91
Autores: Bócoli,Marcelo E.; Mantovani,José R.; Miranda,José M.; Marques,Douglas J.; Silva,Adriano B. da.
ABSTRACT Organic materials subjected to a process of anaerobic digestion in a digester produce biofertilizer that can be used in agriculture as nutrient source. The objective of this study was to evaluate the effect of pig slurry biofertilizer on soil chemical properties and on corn yield and nutrient concentrations in leaves and kernels. The experiment was conducted in the field from November 2012 to April 2013, and was arranged in a randomized block design with seven treatments and four replicates. The treatments consisted of doses of pig slurry biofertilizer (0; 40; 80; 120; 160; 200 and 240 m3 ha-1), applied to the soil surface in a single application, at stage V2 of corn plants. Thirty-three days after biofertilization, soil samples were collected in...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Organic fertilization; Manure; Waste; Effluent.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662016000100042

The chemical composition, fermentation profile, and microbial populations in tropical grass silages
Provedor de dados: 96
Autores: Rigueira,João Paulo Sampaio; Pereira,Odilon Gomes; Ribeiro,Karina Guimarães; Mantovani,Hilário Cuquetto; Agarussi,Mariele Cristina Nascimento.
The objective of this study was to evaluate the fermentation profile, chemical composition and microbial population and losses in the silages of signalgrass and Mombasa grass fertilized with the following levels of nitrogen (N): 0, 30, 60 and 90 kg/ha. The grasses were harvested at 70 days of regrowth, chopped and then ensiled in laboratory silos that had 20 kg of capacity and a snap-top cover and were fitted with Bunsen valves. Before ensiling, samples of the plants were used for the isolation and identification of lactic acid bacteria (LAB) in epiphytic microbiota. The design adopted was a 4 × 2 factorial arrangement, with four doses of N and two forage species, in a completely randomized design, with four replicates. The predominant species of LAB was...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ammonia; Effluent; Lactic acid bacteria; PH.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982013000900002

Bromatological and microbiological characteristics of sugarcane silages treated with calcium oxide
Provedor de dados: 96
Autores: Cavali,Jucilene; Pereira,Odilon Gomes; Valadares Filho,Sebastião de Campos; Santos,Edson Mauro; Carvalho,Gleidson Giordano Pinto de; Santos,Márcia Vitória; Porto,Marlos Oliveira; Rodrigues,Juliana Ferraz Huback.
It was evaluated the addition of calcium oxide (0; 0.5; 1.0; 1.5; and 2.0% of dry matter) effect on the chemical composition and ruminal degradability of the dry matter and neutral detergent fiber, on the losses of dry matter, and on the microbial population in sugar cane silages. A design with five levels of calcium oxide and three replications was used. All the variables were influenced by the addition of calcium oxide in the silages, except the composition in acid detergent insoluble protein, water soluble carbohydrates and lignin. The dry matter content and pH linearly increased while the contents of organic matter, hemicellulose and crude protein linearly decreased with the levels of calcium oxide. Neutral detergent fiber corrected for ashes and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Effluent; Ensilage; Microbial population; Nutritional value; Whitewash.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982010000700002

Evaluation of elephant grass silage with the addition of cassava scrapings
Provedor de dados: 96
Autores: Zanine,Anderson de Moura; Santos,Edson Mauro; Dórea,João Ricardo Rebouças; Dantas,Paulo Alfredo de Santana; Silva,Thiago Carvalho da; Pereira,Odilon Gomes.
The objective of this experiment was to evaluate the effects of adding cassava scrapings on gas and effluent losses, dry matter recovery, pH, contents of N-NH3, organic acids and volatile fatty acids and the bromatological composition of elephant grass silages. It was used a randomized complete design, with four levels of cassava scrapings (0, 7, 15 or 30% natural matter) each one with four replications per level. The grass was cut at 50 days of regrowth and ensiled in 15-L silos, equipped with a Bunsen valve to allow gas outflow. The gas losses decreased quadratically with the addition of cassava scrapings, whereas effluent losses decreased linearly. Dry matter recovery increased quadratically with the addition of cassava scrapings. Dry matter (DM)...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Crude protein; Dry matter; Effluent; Fermentation; Gas.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982010001200008

Mixed sugarcane and elephant grass silages with or without bacterial inoculant
Provedor de dados: 96
Autores: Cavali,Jucilene; Pereira,Odilon Gomes; Valadares Filho,Sebastião de Campos; Porto,Marlos Oliveira; Fernandes,Francisco Eden Paiva; Garcia,Rasmo.
The effects of different ratios of sugarcane and elephant grass (0:100, 25:75, 50:50, 75:25 and 100:0% of the natural basis) were assessed on the chemical composition and losses in silages treated with a bacterial inoculant, using laboratory silos. A 2 × 5 factorial arrangement (with and without inoculant and five elephant grass ratios) in a randomized blocks design with three replications was used. Interaction was observed in the sugarcane and elephant grass ratio × bacterial inoculant for crude protein (CP) and pH. The other variables were influenced only by the increasing proportions of elephant grass. The contents of dry matter, neutral detergent fiber corrected for ashes and protein, acid detergent fiber, insoluble protein in acid detergent fiber,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Effluent; Ethanol; Nutritional value; Organic acids; Soluble sugars.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982010000300003

Variations in the chemical composition of the solution extracted from a Latosol under fertigation with vinasse
Provedor de dados: 124
Autores: Francisco,João Paulo; Folegatti,Marcos Vinícius; Silva,Leonardo Batista Duarte; Silva,Jonathas Batista Gonçalves; Diotto,Adriano Valentim.
ABSTRACT The aim of this work was to evaluate the change in electrical conductivity and pH of a soil solution and its composition, with regard to the levels of nitrate and potassium, in a Latosol cultivated with pineapple and subjected to applications of different levels of vinasse. The experiment was conducted in a greenhouse at the Department of Biosystems Engineering of ESALQ/USP. The treatments comprised the application of five levels of vinasse: T1 - 0 m3 ha-1, T2 - 231 m3 ha-1, T3 - 347 m3 ha-1, T4 - 462 m3 ha-1, and T5 - 578 m3 ha-1. Application was every 20 days, using a localised irrigation system with emitters having a nominal flow rate of 4 L h-1 and spaced 0.40 m apart. The applied doses of vinasse were calculated by following the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Effluent; Reuse of water; Leaching.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902016000200229

Start-up adjustment of a plug-flow digester for cassava wastewater (manipueira) treatment
Provedor de dados: 63
Autores: Ribas,Maria Magdalena Ferreira; Barana,Ana Cláudia.
Manipueira, wastewater of cassava (Manihot esculenta) processing, can be treated by anaerobic biodigestion. To study the start-up process of a plug-flow digester for manipueira treatment, this work consisted of two stages: gradual decrease of the hydraulic retention time (HRT) to the preset time of 4 days or maintaining a fixed HRT of 4 days with gradual increase of the substrate concentration. A digester of 1980 mL capacity was opperated, at constant temperature (32 ± 1º C), with substrate pH corrected between 5.5 and 6.0. The first stage had durations of 16.6; 13.6; 11.6; and 9.6 days and the organic loads were 3.1; 2.0; 2.3; and 2.9 COD L-1 d-1, (chemical oxigen demand) respectively. The second stage was characterized by a fixed HRT (4 days) and organic...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cassava; Anaerobic; Effluent; Biodigestion.
Ano: 2003
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162003000200004

Energy generation in a Microbial Fuel Cell using anaerobic sludge from a wastewater treatment plant
Provedor de dados: 63
Autores: Passos,Vinicius Fabiano; Aquino Neto,Sidney; Andrade,Adalgisa Rodrigues de; Reginatto,Valeria.
ABSTRACT In microbial fuel cells (MFCs), the oxidation of organic compounds catalyzed by microorganisms (anode) generates electricity via electron transfer to an external circuit that acts as an electron acceptor (cathode). Microbial fuel cells differ in terms of the microorganisms employed and the nature of the oxidized organic compound. In this study, a consortium of anaerobic microorganisms helped to treat the secondary sludge obtained from a sewage treatment plant. The microorganisms were grown in a 250 mL bioreactor containing a carbon cloth. The reactor was fed with media containing acetate (as the carbon source) for 48 days. Concomitantly, the electrochemical data were measured with the aid of a digital multimeter and data acquisition system. At the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Microbial consortia; Anode; Power density; Effluent.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162016000500424

Additive containing homo and heterolactic bacteria on the fermentation quality of maize silage - doi: 10.4025/actascianimsci.v35i4.18833
Provedor de dados: 2
Autores: Junges, Daniel; Universidade de São Paulo; Schmidt, Patrick; Universidade de São Paulo; Novinski, Charles Ortiz; Universidade Federal do Paraná; Daniel, João Luiz Pratti; Universidade de São Paulo.
This trial evaluated the addition of Lactobacillus plantarum, L. brevis and Enterococcus faecium combo additive against a control treatment. The silages were made in laboratory silos that were stored for 30, 60, 90 or 120 days before opening. We evaluated the chemical composition of the forage before and after ensiling and the fermentative losses of silages. The additive decreased (p &amp;lt; 0.01) effluent production (11.4 kg ton-1) compared to control silage (14.0 kg ton-1), but it increased (p &amp;lt; 0.01) the Neutral Detergent Fiber (NDF) and Acid Detergent Fiber (ADF) from 45.6% and 24.5% to 47.0 and 25.1% for control and additive silages, respectively. The storage periods affected (p &amp;lt; 0.01) effluent production, Dry Matter Losses (DML), NDF,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: 4.03.05.00-7; Zootecnia; Forragicultura  silagem  alimentação animal aerobic stability; Effluent  gases; Lactobacillus brevis; Lactobacillus plantarum; Losses Aerobic stability; Effluent; Gases; Lactobacillus brevis; Lactobacillus Plantarum; Losses.
Ano: 2013
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/18833

Losses and nutritional value of elephant grass silage with inclusion levels of cottonseed meal - doi: 10.4025/actascianimsci.v35i2.13736
Provedor de dados: 2
Autores: Viana, Pablo Teixeira; Universidade Estadual do Sudoeste da Bahia; Teixeira, Fábio Andrade; Universidade Estadual do Sudoeste da Bahia; Pires, Aureliano José Vieira; Universidade Estadual do Sudoeste da Bahia; Carvalho, Gleidson Giordano Pinto de; Universidade Federal da Bahia; Figueiredo, Mauro Pereira de; Universidade Estadual do Sudoeste da Bahia; Santana Junior, Hermógenes Almeida de; Universidade Estadual do Sudoeste da Bahia.
The experiment was conducted to evaluate losses and nutritive value of elephant grass silage containing increasing levels of cottonseed meal. The experimental design was completely randomized, with five treatments: 0, 7, 14, 21 and 28% inclusion of cottonseed meal, and four replications. The material was chopped and packed in PVC silos and stored for 80 days. The pH and dry matter (DM), crude protein, lignin and ether extract of the silages increased linearly with the addition of cottonseed meal, while the levels of acid detergent insoluble nitrogen, neutral detergent fiber, acid detergent fiber, cellulose and hemicellulose decreased linearly. The addition of 28% cottonseed meal reduced the in situ disappearance of DM (48h) to values lower than those of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Zootecnia; Forragicultura; Produção e Avaliação de Alimentos by-product; Effluent; Ensiling; Gossypium hirsutum.
Ano: 2012
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/13736

Estado trófico e bioacumulação do fósforo total no cultivo de peixes em tanques-rede na área aqüícola do reservatório de Itaipu - DOI: 10.4025/actascibiolsci.v30i3.519
Provedor de dados: 3
Autores: Bueno, Guilherme Wolff; Unioeste; Marengoni, Nilton Garcia; Unioeste- Marechal Cândido Rondon; Gonçalves Júnior, Affonso Celso; Unioeste- Marechal Cândido Rondon; Boscolo, Wilson Rogério; Unioeste- Toledo; Teixeira, Rodrigo de Almeida; UEPG- Ponta Grossa.
A intensa produção de peixes e uso dos recursos hídricos pode comprometer a qualidade e disponibilidade da água, além de afetar a capacidade de suporte do ambiente, causando eutrofização e conseqüentemente a poluição do mesmo. Realizou-se um estudo das variáveis físico-químicas da água e dos teores de fósforo total (P-total) no sedimento, rações e peixes cultivados em tanques-rede em uma área aqüícola localizada no reservatório da Itaipu, no município de Santa Helena – PR, objetivando monitorar a qualidade da água e determinar o índice de eutrofização total da área de cultivo, além de analisar a bioacumulação de P-total nos peixes e sedimento. As variáveis físico-químicas da água mantiveram valores normais indicados pelo CONAMA. A concentração média de...
Palavras-chave: 2.00.00.00-6 Ciências Biológicas Aqüicultura sustentável; Área aqüícola; Efluentes; Impacto ambiental; Limnologia. sustainable aquaculture; Aquaculture area; Effluent; Environment impact; Limnology.
Ano: 2008
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/519

Ecotoxicity assessment in aquaculture system using the test organism Pseudokirchneriella subcapitata (Chlorophyceae) - doi: 10.4025/actascibiolsci.v34i4.9391
Provedor de dados: 3
Autores: Miashiro, Luciana; Instituto de Pesca; Lombardi, Julio Vicente; Instituto de Pesca; Mercante, Cacilda Thais Janson; Instituto de Pesca.
The purpose of this study is to perform toxicity tests with microalgae Pseudokirchneriella subcapitata (Chlorophyceae) using inland water samples to evaluate the impact caused by aquaculture. Six field samples were collected ranged November 2006 to March 2007, at Experimental Station, Pindamonhangaba, State of São Paulo. Abiotic factors pointed out to the mesotrophic and eutrophic characteristics already observed at the fish pond and its effluent. The results of ecotoxicological tests carried out with the microalgae Pseudokirchneriella subcapitata showed that the fish pond effluent was potential enough to stimulate the algal growth, therefore eutrophication, to the extent that it is naturally diluted to at least 12.5% of its initial concentration. This...
Palavras-chave: 2.10.07.00-4 Nile tilapia; Effluent; Eutrophication; Microalgae Toxicologia.
Ano: 2012
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/9391

Annual production of grass silage for biogas: effects of fibrolytic enzyme additives on ensilage efficiency and specific methane yields
Provedor de dados: 111
Autores: Nolan, Pearl; Doyle, Evelyn; O'Kiley, Padraig.
The aims of this study were to quantify the effects of fibrolytic enzyme additives applied to each of four consecutive cuts of unwilted grass at ensiling on ensilage characteristics and specific CH4 yields (SMY) per unit mass and per unit land area. In light of the importance of the primary growth yield, the effects of the timing of Cut 1 were also investigated. Furthermore, the mass-SMY and area-SMY effect of any effluent produced during ensilage was determined.At each of four cuts that comprised annual growth, samples from four replicate plots of Lolium perenne and of Phleum pratense were untreated (control) or were treated with either of two fibrolytic enzymes (ENZ 1 and ENZ 2) prior to ensiling for 120 days. The mass-SMY of silages and effluents were...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Grass yield; Silage; Fibre; Enzymes; Effluent; CH4 yield per unit land area.
Ano: 2018
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/4159

Bioprospecting of lipolytic microorganisms obtained from industrial effluents
Provedor de dados: 42
Autores: PEIL,GREICE H.S.; KUSS,ANELISE V.; RAVE,ANDRÉS F.G.; VILLARREAL,JOSÉ P.V.; HERNANDES,YOHANA M.L.; NASCENTE,PATRÍCIA S.
ABSTRACT The lipases have ability to catalyze diverse reactions and are important in different biotechnological applications. The aim of this work was to isolate and characterize microorganisms that produce lipases, from different food industry effluents localized in Pelotas, RS/Brazil. Bacteria were identified using Gram stain and biochemical tests (Vitek 2(r)). Fungi were identified according to macro and micromorphology characteristics. The extracellular lipase production was evaluated using the Rhodamine B test and the enzymatic activity by titration. Twenty-one bacteria were isolated and identified as Klebsiella pneumoniae ssp. pneumoniae, Serratia marcescens, Enterobacter aerogenes, Raoultella ornithinolytica and Raoultella planticola. Were...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Effluent; Enzyme activity; Extracellular lipase production; Lipase enzyme; Lipolytic microorganism.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652016000501769

Effect of temperature on two-phase anaerobic reactors treating slaughterhouse wastewater
Provedor de dados: 52
Autores: Beux,Simone; Nunes,Ezequiel; Barana,Ana Cláudia.
The effectiveness of the anaerobic treatment of effluent from a swine and bovine slaughterhouse was assessed in two sets of two-phase anaerobic digesters, operated with or without temperature control. Set A, consisting of an acidogenic reactor with recirculation and an upflow biological filter as the methanogenic phase, was operated at room temperature, while set B, consisting of an acidogenic reactor without recirculation and an upflow biological filter as the methanogenic phase, was maintained at 32°C. The methanogenic reactors showed COD (Chemical Demand of Oxygen) removal above 60% for HRT (Hydraulic Retention Time) values of 20, 15, 10, 8, 6, 4, and 2 days. When the HRT value in those reactors was changed to 1 day, the COD percentage removal decreased...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Effluent; Slaughterhouse; Treatment; Anaerobic; Two-phase.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132007000700017

Treatment of shrimp effluent by sedimentation and oyster filtration using Crassostrea gigas and C. rhizophorae
Provedor de dados: 52
Autores: Ramos,Roberto; Vinatea,Luis; Seiffert,Walter; Beltrame,Elpídio; Silva,Júlia Santos; Costa,Rejane Helena Ribeiro da.
Efficiency in removing particulate matter from Litopenaeus vannamei shrimp culture effluent was assessed in laboratory scale employing sedimentation and oysters Crassostrea gigas and C. rhizophorae filtration processes. Cylindroconical tanks (100 L) were used in duplicate for sedimentation and 50-L in triplicate for oyster filtration. Fifteen oysters of each species weighing 76-80 g were stocked in each of the filtration treatment experimental units (biomass of 1065 - 1174 g oyster per unit). The control treatment was a tank similar to those used in the filtration treatment but with empty oyster shells. Hydraulic retention time of the effluent was of 6 hours in each treatment. First, effluent went through sedimentation, and then the supernatant went...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Oysters; Filtration; Sedimentation; Effluent; Litopenaeus vannamei.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132009000300030

Characterization and evaluation of the impact of feed management on the effluents of Nile tilapia (Oreochromis niloticus) culture
Provedor de dados: 52
Autores: Baccarin,Ana Eliza; Camargo,Antonio Fernando Monteiro.
The objective of this study was to evaluate the effect of different feed management on the quality of effluent water generated in Nile tilapia (Oreochromis niloticus) culture ponds. Feed was supplied as follows: natural food, and pelleted, extruded or minced ration. The study was conducted during 19 weeks in 12 continuous water exchange ponds of 300 m² each, with a population of male Nile tilapia juveniles, in a density equal to 1.7 fish m-2. Feeds contained 30% crude protein, 3,000 kcal digestible energy, and were supplied twice a day. Natural food consisted of chicken manure. Temperature, dissolved oxygen, pH, total phosphorus, total nitrogen, chlorophyll a and suspended solids were monitored weekly in the supplying and effluent water. Water residence...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fish culture; Environmental impact; Feed management; Effluent.
Ano: 2005
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132005000100012