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| Registros recuperados: 51 | |
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| Sipaúba-Tavares, Lúcia Helena; UNESP - Jaboticabal; Braga, Francisco Manoel de Souza; UNEP Rio Claro. |
| Variáveis físico-químicas da água e do solo foram avaliadas a fim de verificar a eficiência de um “wetland” construído no tratamento de resíduos. Foram escolhidas oito espécies de macrófitas baseadas na capacidade de retenção e disponibilidade no local de estudo. Dentre elas estão: Eichhornia crassipes, Alternanthera philoxerodos, Heteranthera reniformis, Hydrocotyle umbeliferae, Ludwigia elegan, Ludwigia sericea, Myriophyllum aquaticum e Thypha domingensis. Foram amostrados dois pontos um na entrada e outro na saída de água do “wetland”. Diferenças significativas (p < 0,05) foram observadas entre a entrada e saída do “wetland” em relação às variáveis limnológicas. Em geral, foram observadas concentrações de oxigênio dissolvido acima de 4 mg L-1 e de... |
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Palavras-chave: 2.00.00.00-6 Ciências Biológicas effluent; Wastewater; Physical and chemical parameters; Macrophyte. effluent; Wastewater; Physical and chemical parameters; Macrophyte. |
| Ano: 2008 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/5002 |
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| Haryanto, Agus; Triyono, Sugeng; Siska, Posmaria Mei. |
| This research aims to evaluate performance of a water hyacinth (Eichornia crassipes (Mart) Solms) pond used to treat biogas effluent of a tapioca industry wastewater treatment system. The water hyacinth pond which treats biogas effluent has been monitored for about two months. Wastewater samples were taken from influent and effluent of the water hyacinth pond. Parameters to be observed included wastewater quality parameters (pH, temperature, turbidity, BOD5, ammonia, solids, evapotranspiration, discharge, and hydraulic retention time) and water hyacinth parameters (growth, population density, moisture, ash, nutrient contents). The results showed that water hyacinth improved some parameters of the biogas effluent to some extent. Within HRT of 53 days,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Wastewater; Biogas; Environmental burden; Organic matter; Indonesia.. |
| Ano: 2020 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/5867 |
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| Fontaínhas-Fernandes,António; Luzio,Ana; Garcia-Santos,Sofia; Carrola,João; Monteiro,Sandra. |
| Adult Nile tilapia, Oreochromis niloticus, of both sexes were exposed in wastewater from a sewage treatment plant for a period of 4 days. Gill samples were collected after 24, 48, 72 and 96 h and histopathological changes were analyzed by light and scanning electronic microscopy. Gill epithelium of control O. niloticus (freshwater group) was similar to that of other teleosts, while histopathological lesions were observed in exposed fishes. The main histopathological changes were edema, lifting of lamellar and filamentar epithelia and lamellar fusion. Cell proliferation with consequent thickening of the filament epithelium was also found in fishes exposed to the treated sewage water. The severity of the lesions increased with the time of exposure, namely... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Gill; Tilapia; Histopathology; Wastewater. |
| Ano: 2008 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132008000500023 |
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| Teles,Jéssica Cristine; Stolle,Elaine Macedo; Koloda,Stela Aparecida; Barana,Ana Claudia. |
| Abstract The purpose of this paper was to evaluate the production of propionic acid from the fermentation of agroindustrial effluents using a Propionibacterium acidipropionici culture. The composition of the substrates was determined by using an experimental design of mixtures, resulting in 10 trials. The substrates were fermented in batch borosilicate glass reactors at a temperature of 35°C, initial pH of 6.5, and 20 mL.L-1 of inoculum suspension. The highest yield of propionic acid production, 0.79 g of product per g of substrate, was obtained with a substrate composed only of corn steep liquor, which showed a productivity of 5.20 mg.L-1h-1 and production of 0.40mL.L-1. These results showed that the corn steep liquor positively influenced performance and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Agroindustrial by-products; Fermentation; Corn steep liquor; Cheese whey; Wastewater. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132019000100702 |
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| Luz María Chacón,J; Lizeth Taylor,C; Carmen Valiente,A; Irene Alvarado,P; Ximena Cortés,B. |
| The availability of a useful tool for simple and timely detection of the most important virulent varieties of Escherichia coli is indispensable. To this end, bacterial DNA pools which had previously been categorized were obtained from isolated colonies as well as selected in terms of utilized phenotype; the pools were assessed by two PCR Multiplex for the detection of virulent E. coli eaeA, bfpA, stx1, stx2, ipaH, ST, LT, and aatA genes, with the 16S gene used as DNA control. The system was validated with 66 fecal samples and 44 wastewater samples. At least one positive isolate was detected by a virulent gene among the 20 that were screened. The analysis of fecal samples from children younger than 6 years of age detected frequencies of 25% LT positive... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Virulence genes; Wastewater; Fecal; Screening system; Escherichia coli. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822012000400012 |
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| BARANA,Ana Cláudia; CEREDA,Marney Pascoli. |
| A two-phase anaerobic biodigestor was employed in order to analyze methane production with different manipueira organic loading rates. The acidogenic phase was carried out in a batch process whereas the methanogenic in an up-flow anaerobic fixed bed reactor with continuous feeding. The organic loading rates varied from 0.33 up to 8.48g of Chemical Demand Oxygen (COD)/L.day. The highest content of methane, 80.9%, was obtained with organic loading rate of 0.33g and the lowest, 56.8%, with 8.48gCOD/L.d. The highest reduction of COD, 88.89%, was obtained with organic loading rate of 2.25g and the lowest, 54.95%, with 8.48gCOD/L.d. From these data it was possible to realize that anaerobic biodigestion can be managed in at least two ways, i.e., for energy... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Anaerobic biodigestion; Biogas; Wastewater; Cassava; Methane. |
| Ano: 2000 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612000000200010 |
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| ELMALI,Mehmet; CAN,Hayriye Yeşim. |
| Abstract The objectives of this study were i) to isolate Arcobacter species (Arcobacter butzleri, Arcobacter skirrowii, Arcobacter cryaerophilus) from different foods and sources, ii) to verify the isolates by multiplex PCR assay, iii) to detect the antibiotic resistance profiles of the isolates. In this study a total of 60 Arcobacter isolates were obtained. Arcobacter species were mostly isolated from swab samples (40%), followed by wastewater (29.1%), broiler wing meat (30%), raw milk (23.9%) and minced meat (6.6%). Regarding the seasonal distribution of Arcobacter from swab and wastewater samples, the bacterium was commonly isolated from wastewater in winter and spring, while it was frequently detected in swab samples during autumn and spring. All of... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Arcobacter; Antimicrobial resistance; Raw milk; Minced meat; Wastewater. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612017000200280 |
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| AMIR,Rai Muhammad; RANDHAWA,Muhammad Atif; SAJID,Muhammad Wasim; NADEEM,Muhammad; AHMAD,Anwaar; WATTOO,Fahad Masoud. |
| Abstract Heavy metals pollution is a global threat to the environment and ecosystem due to various human and natural activities. Heavy metal intake through vegetables and diet leads to numerous ailments such as nervous disorder, kidney damage tubular growth and bone disease. The present study was conducted to mitigate the residue of heavy metals Hg, Pb, Zn and As in spinach collected from self-grown supervised field by using different washing treatments. Amount of trace metals was measured in fresh and chemically washed spinach samples with the help of Atomic Absorption Spectrophotometer (AAS). Results revealed that highest reduction of mercury, lead, zinc and arsenic residues with 10% citric acid was 23%, 28%, 54% and 22% respectively among the tested... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Heavy metals; Spinach; Wastewater; Acidic solutions; Alkaline solutions; Biological extract. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612019000100176 |
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| Fischer Filho,João Alberto; Dalri,Alexandre Barcellos; Santos,Miquéias Gomes dos; Zanini,José Renato; Faria,Rogério Teixeira de. |
| ABSTRACT: This study aimed to evaluate the obstruction of non-pressure compensating emitters using treated sewage effluent (TSE) for irrigation. A drip irrigation system with six models of emitters (encoded) was installed in level field conditions. TSE coming from a sewage treatment station was used as irrigation water after being filtered through a disc filter (120 mesh). Seven flow rate evaluations of drippers operating at 100kPa were performed (0, 100, 200, 300, 400, 500 and 600h of operation). The experimental design was randomized in a 6×7 factorial arrangement (6 models and 7 times), with four repetitions, and Tukey’s test was used to compare means. Relative flow rate (Qr), the flow rate coefficient of variation (CVQ) and degree of clogging (GE) were... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Wastewater; Trickle irrigation; Clogging; Water saving. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000700351 |
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| Elmalı,Mehmet; Can,Hayriye Yeşim. |
| ABSTRACT: Campylobacter is one of the most common causes of bacterial foodborne diseases throughout the world. This study was conducted to determine the prevalence, antimicrobial resistance and virulence of Campylobacter isolates of raw cow’s milk and cattle slaughterhouse wastewater samples in Hatay, Turkey. A total of 114 raw milk and 78 wastewater samples were analyzed for the identification of C. jejuni, C. coli, and C. lari by multiplex PCR. The overall prevalence of Campylobacter was found to be 7.2%, of these isolates, 85.7% were identified as C. jejuni and 14.2% as C. coli, but C. lari was not detected in the study. The cdtA and cadF genes were present in 66.6% and 41.6% of C. jejuni isolates tested, respectively, but wlaN gene was not found in... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Antimicrobial resistance; Campylobacter; Milk; Wastewater. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782019000500450 |
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| Robledo Santoyo, Edmundo. |
| Como subproducto del tratamiento de las aguas residuales de la ciudad de Aguascalientes, Ags., en la Planta de Tratamiento “El Niágara”, se generan diariamente de 150 a 170 m3 de biosólidos. Estos materiales son aplicados a suelos agrícolas de áreas cercanas a la planta, sin regulación alguna, por lo que se han obtenido buenos resultados o causado quemaduras en plántulas o endurecimiento de suelos. El objetivo de este proyecto fue generar estrategias para la disposición y aprovechamiento de los biosólidos para mejorar suelos agrícolas y la calidad y rendimiento de los cultivos, sin perjuicio para el ambiente. Para determinar el efecto de los biosólidos sobre suelos y plantas, se colectaron muestras de los biosólidos y se tomaron muestras de tres tipos de... |
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Palavras-chave: Aguas residuales; Metales pesados; Contaminación; Mejoradores del suelo; Wastewater; Heavy metals; Contamination; Soil amendments; Edafología; Doctorado. |
| Ano: 2012 |
URL: http://hdl.handle.net/10521/1733 |
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| Gaona Quesada, Rafael. |
| Existe una planta de tratamiento de aguas residuales (PTAR) en el río Grande de Morelia que tiene una capacidad para 2.19 m3s-1, cuya agua tratada se mezcla con el agua del río proveniente de la presa y luego se conduce para irrigar las superficies de los módulos II, III y IV del Distrito de Riego 020 Morelia-Queréndaro, Michoacán. Los usuarios de estos módulos, tienen concesión para usar tanto el agua del río proveniente de la presa así como para usar el agua residual de la ciudad de Morelia. En este trabajo se evalúa la factibilidad económica de entubar el agua proveniente de la PTAR y llevarla hasta el punto de control de cada uno de los módulos. Con el proyecto se podrá evitar la mezcla de aguas residuales con agua proveniente de la presa y de tener... |
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Palavras-chave: Aguas residuales; Diseño hidráulico; Indicadores económicos; Wastewater; Hydraulic design; Economic indicators; Hidrociencias; Maestría Tecnológica. |
| Ano: 2013 |
URL: http://hdl.handle.net/10521/2067 |
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| Registros recuperados: 51 | |
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