|
|
|
| Registros recuperados: 11 | |
|
| |
|
| |
|
| |
|
|
| Fraga Castro, I.; Jaime Ceballos, B.. |
| Con el objetivo de evaluar el efecto aglutinante del concentrado de pectina de cítrico (CPC) en el alimento para camarón, se desarrolló un diseño experimental completamente aleatorizado con cuatro tratamientos y tres réplicas por cada uno, en condiciones controladas. Las dietas se elaboraron con 0; 2; 5 y 7 % de CPC. Las pruebas de estabilidad del alimento se realizaron introduciendo 1 g de cada alimento, en bolsas de 0,1 mm de luz de malla previamente pesada y se colocaron en agua de mar (35 ups y 27 ºC), durante 1; 12 y 24 h. Al final de cada intervalo de tiempo, los alimentos se secaron y pesaron para calcular peso seco, pérdida de materia seca y absorción de agua. Con el empleo del CPC, los alimentos alcanzaron una estabilidad superior al 80 %... |
| Tipo: Journal Contribution |
Palavras-chave: Food fish; Shrimp nutrition; Water treatment; Absorption loss; Loss of dry matter. |
| Ano: 2012 |
URL: http://hdl.handle.net/1834/5704 |
| |
|
|
| Francisco,João P.; Silva,Jonathas B. G.; Roque,Odir C. C.; Nascentes,Alexandre L.; Silva,Leonardo D. B.. |
| This study aimed to evaluate the effect of Moringa oleifera Lam extract on the removal of total solids (TS), total suspended solids (TSS) and chemical oxygen demand (COD), in different filter media for treating wastewater of dairy cattle breeding (DCW). The moringa seed extract was obtained by grinding 50 g of seeds in one liter of distilled water and, after passing the solution through a quantitative paper filter of 25 microns, 60 mL of the extract were added to wastewater from cattle breeding before the filtration process in organic filters made of thin coal, bamboo leaves, eucalyptus leaves, gliricidia branches and sawdust. This was followed by the completely randomized experimental design, adopting a factorial of 5 x 2. Aliquots of filtered effluent... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Coagulant; Fertigation; Water treatment. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162014000100015 |
| |
|
|
| 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 |
| |
|
| |
|
|
| CALEGARI,R.P.; MENDES,K.F.; MARTINS,B.C.; PIMPINATO,R.F.; BAPTISTA,A.S.; TORNISIELO,V.L.. |
| ABSTRACT: The intensive use of pesticides, such as the herbicides diuron and hexazinone, leads to a concern about the preservation of the water quality of the water resources destined for human consumption. Currently, conventional water treatment techniques do not have high capacity to remove herbicides; therefore, the need to study other techniques arises. The present study aimed to evaluate the efficiency of the removal of diuron and hexazinone herbicides present in water through a commercial filtration system. The study was carried out in a filtration system composed of the following sequence of filters: sand filter and coconut shell activated granular carbon, polypropylene filter 20 mm, activated carbon filter with silver salts, polypropylene filter 5... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Activated granular coal; Reverse osmosis; Herbicide removal; Water treatment. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582018000100346 |
| |
|
|
| Pagand, Pascal. |
| When facing the increasing development of aquaculture, farming in recycled water is an alternative to limit the impact on the environment: farming produces a lower amount of wastes but of higher concentration which can be treated. The goal of this thesis is to evaluate the efficiency of high rate algal lagooning/ponding (HRAP) for the treatment of marine fish culture effluents. Also, this study utilizes wastes from Dicentrarchus labrax grown in Ifremer's recycled waters station. The first step shows the particularities linked to recycled water farming effluents. They are characterized by low particle and organic substance concentrations as well as strong dissolved inorganic nitrogen (DIN) and phosphorus (DIP) concentrations. Furthermore, nitrogen is mainly... |
| Tipo: Text |
Palavras-chave: Fish; High rate algal pond; Aquaculture; Alga; Water treatment; Recirculating effluents. |
| Ano: 1999 |
URL: http://archimer.ifremer.fr/doc/1999/these-1748.pdf |
| |
|
| |
|
|
| Hollas, Camila Ester; Pokrywiecki, Ticiane Sauer; Prado, Naimara Vieira do; Chini, Angélica; Düsman, Elisângela; Conceição, Priscila Soraia da. |
| Underground and surface water as a result of human activity are increasingly polluted. Mainly due to improper disposal of waste, discharge of effluents, among other actions that compromise the environment. The water analysis is necessary to determine and evaluate the situation of water supply to the population. This study evaluated the supply situation of three rural communities located in the south of Brazil, where the water is carried out through the abstraction of groundwater. Pastures, fields and remnants of native vegetation characterize the region. The water quality used to supply was what motivated the accomplishment of this work. The wells are unprotected in the middle of the pastures near to black cesspits and crops that use frequently... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Environmental education; Water treatment; Water supply; Groundwater; Organisms tests.. |
| Ano: 2019 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/43266 |
| |
| Registros recuperados: 11 | |
|
|
|
