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| Registros recuperados: 18 | |
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| Romero López, T.. |
| The present paper involves their results in the pollutant contributions to the aquatic ecosystems according to the products processed in different productive facilities of the Cuba Island, and concerning to the most significant fishing resources as lobster, white shrimp, tuna, shark, snapper, mackerel, jack and bill fish. The polluting loads in 12 years (between 1955 and 1999) respond to the indicators BOD, QOD, TP, TNK and N-NH4. The captures for those years were approximately between 3 950 and 23 970 tons, with fluctuations of BOD loads between 56 and 342 tons and of DQO between 111 and 676 tons. The principal nutrients contribution was the nitrogen, followed by the phosphorous and finally the ammonium, representing a total contribution of 136,3; 52,7... |
| Tipo: Proceedings Paper |
Palavras-chave: Fishery industry; Waste water; Environmental impact; Waste water; Environmental impact; Http://aims.fao.org/aos/agrovoc/c_24927; Http://aims.fao.org/aos/agrovoc/c_24420. |
| Ano: 2006 |
URL: http://hdl.handle.net/1834/2083 |
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| Méndez, L.; Albarracín, I.; Cravero, M.; Salomón, R.. |
| La creciente problemática frente al tratamiento de aguas residuales y su posible reuso, ha planteado sistemas biológicos que remuevan los contaminantes manteniendo el ecosistema y disminuyendo costos. Este trabajo consiste en un ensayo de biorremediación, evaluando la tasa de crecimiento de Scenedesmus quadricauda cultivada en efluentes domiciliarios de la ciudad de Trelew, Chubut, Argentina. Diariamente se determina conductividad, pH y densidad celular. Al inicio y al final del ensayo se obtienen valores para fosfato, fósforo total, sulfuro, amoníaco, nitrito, nitrato, detergentes, DBO5, DQO y número más probable de coliformes totales y fecales. Se observa una disminución en amoníaco, fósforo, fósforo total, DBO5 y DQO, lo que confirma la efectividad en... |
| Tipo: Journal Contribution |
Palavras-chave: Growth; Waste water; Water purification. |
| Ano: 2011 |
URL: http://hdl.handle.net/1834/4630 |
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| Méndez Suaza, L.; Albarracín, I.; Cravero, M.; Salomón, R.. |
| La creciente problemática frente al tratamiento de aguas residuales y su posible reuso ha planteado sistemas biológicos que remuevan los contaminantes manteniendo el ecosistema y disminuyendo costos. Este trabajo consiste en un ensayo de biorremediación evaluando la tasa de crecimiento de Scenedesmus quadricauda cultivada en efluentes domiciliarios de la ciudad de Trelew, Chubut, Argentina. Diariamente se determina conductividad, pH y densidad celular. Al inicio y al final de ensayo se obtienen valores para fosfato, fósforo total, sulfuro, amoníaco, nitrito, nitrato, detergentes, DBO5, DQO y número más probable de coliformes totales y fecales. Se observa una disminución en amoníaco, fósforo, fósforo total, DBO5 y DQO lo que confirma la efectividad en la... |
| Tipo: Preprint |
Palavras-chave: Growth; Waste water; Water purification; Growth; Waste water; Water purification; Http://aims.fao.org/aos/agrovoc/c_3394; Http://aims.fao.org/aos/agrovoc/c_24927; Http://aims.fao.org/aos/agrovoc/c_34145. |
| Ano: 2010 |
URL: http://hdl.handle.net/1834/3639 |
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| Suárez Álvarez, G.; Valdés Herrera, R.; Romero López, T.. |
| This report intend to know, if BOD5 of fishing industry waste waters,follows a similar and proportional behavior to different temperatures and from incubation times, where the oxidative processes of organic matter are experimentally developed and to obtain a mathematical equation that allows us to know the job stream necessary, when diminishing the experimental time, if we accelerated the processes by means of thermal increases; besides to determine which of the propose methodologies in the bibliography, is the one that explains better the phenomenon of the BOD completes and the deoxygenating constant, important parameters to design any type of system of treatment to the liquid waste waters of the fishing industry. Finding this relation, will be able to be... |
| Tipo: Proceedings Paper |
Palavras-chave: Waste water; Industrial wastes; Fishery industry; Waste water; Industrial wastes; Http://aims.fao.org/aos/agrovoc/c_24927; Http://aims.fao.org/aos/agrovoc/c_11763. |
| Ano: 2006 |
URL: http://hdl.handle.net/1834/2189 |
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| Neri Ramírez Efraín. |
| La zona agrícola del canal Chilhuacán se riega con aguas residuales provenientes del río Nexapa, es altamente productiva en hortalizas, forrajes y ornamentales, pero con un riesgo implícito para suelos y cultivos, debido a que las aguas tienen contaminantes, principalmente metales pesados y alta salinidad. El objetivo de esta investigación fue: “Evaluar los efectos ambientales y sociales de la agricultura de riego ocasionados por el uso de aguas residuales del canal Chilhuacán derivadas del río Nexapa”. Para lo cual se llevaron a cabo muestreos y análisis de agua, suelo y cultivos, para determinar el nivel de contaminación. En el caso del agua, se realizaron tres muestreos en el 2007 en época de estiaje, encontrándose que la concentración total de... |
| Tipo: Tesis |
Palavras-chave: Contaminación microbiológica; Metales pesados; Cultivos hortícolas; Heavy metals. Waste water; Waste water. |
| Ano: 2008 |
URL: http://hdl.handle.net/10521/1196 |
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| Igwe,Jude C; Abia,Augustin A. |
| The mobilization of heavy metals in the environment due to industrial activities is of serious concern due to the toxicity of these metals in humans and other forms of life. The equilibrium adsorption isotherms of Cd(II), Pb(II) and Zn(II) ions, detoxification from waste water using unmodified and EDTA-modified maize husk have been studied. Maize husk was found to be an excellent adsorbent for the removal of these metal ions. The amount of these metal ions adsorbed increased as the initial concentration increased. Also, EDTA-modification enhanced the adsorption capacity of maize husk due to the chelating ability of ethylenediamine tetra acetic acid (EDTA). Among the three adsorption isotherms tested, Dubinin-Radushkevich isotherm gave the best fit with R²... |
| Tipo: Journal article |
Palavras-chave: Adsorption isotherm; EDTA; Heavy metals; Maize husk; Waste water. |
| Ano: 2007 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582007000400007 |
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| Valencia T., M.. |
| Durante los veranos australes de 1995-1996 y 1997-1998 se llevó a cabo, en Ensenada Guayaquil, cuerpo de agua aledaño a Punta Fort William, Isla Greenwich, del archipiélago de las Shetland del Sur, lugar del asentamiento de la Estación Científica "Pedro Vicente Maldonado", estudios químicos de la calidad de las aguas tendientes a determinar el eventual impacto que las actividades humanas pudieran ocasionar sobre tal ecosistema. Se presenta información acerca de las condiciones de oxigenación de las aguas, temperatura y salinidad de las mismas, la capacidad nutricia en relación con la concentración de micronutrientes inorgánicos así como información acerca de la presencia de hidrocarburos del petróleo disueltos y dispersos y, para establecer la efectividad... |
| Tipo: Journal Contribution |
Palavras-chave: Environmental impact; Water quality; Hydrocarbons; Waste water; Dissolved oxygen; Chemical analysis; Environmental impact; Water quality; Waste water; Dissolved oxygen; Hydrocarbons; Http://aims.fao.org/aos/agrovoc/c_24420; Http://aims.fao.org/aos/agrovoc/c_16061; Http://aims.fao.org/aos/agrovoc/c_24927; Http://aims.fao.org/aos/agrovoc/c_36106; Http://aims.fao.org/aos/agrovoc/c_3719. |
| Ano: 1998 |
URL: http://hdl.handle.net/1834/3850 |
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| Abdel Wahab, O.. |
| The present investigation deals with the utilization of marine green algae (GA), Ulva lactuca, and an activated carbon prepared from green algae (CGA) as adsorbents for the removal of copper from wastewater. A series of experiments were conducted in a batch system to evaluate the effect of system variables. The effect of pH, initial copper concentration, dose of adsorbents were considered. The optimal pH value of copper (II) adsorption onto GA and CGA was found to be pH 5.0. The maximum uptake capacities were 24.5 and 32.3 mg copper (II) per gram of GA and CGA, respectively. The efficiency of removal was slightly changed by replacing an aqueous solution by saline water or wastewater containing the same copper concentration. Adsorption kinetic data were... |
| Tipo: Journal Contribution |
Palavras-chave: Laboratory Study; Adsorption; Kinetics; Isotherms; Waste water; Adsorption; Http://aims.fao.org/aos/agrovoc/c_137. |
| Ano: 2007 |
URL: http://hdl.handle.net/1834/1910 |
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| CEREDA,M. P.; MATTOS,M.C.Y.. |
| Cassava is a widely grown root crop which accumulates two cyanogenic glucosides, linamarin and lotaustralin. Linamarin accounts for more than 80% of the cassava cyanogenic glucosides. It is a ß-glucoside of acetone cyanohydrin and ethyl-methyl-ketone-cyanohydrin. Linamarin ß-linkage can only be broken under high pressure, high temperature and use of mineral acids, while its enzymatic break occurs easily. Linamarase, an endogenous cassava enzyme, can break this ß-linkage. The enzymatic reaction occurs under optimum conditions at 25ºC, at pH 5.5 to 6.0. Linamarin is present in all parts of the cassava plant, being more concentrated on the root and leaves. If the enzyme and substrate are joined, a good detoxification can occur. All the cassava plant species... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cyanide; Cassava; Linamarin; Cyanogenic glucoside; Residues; Waste water; Culinary and industrial uses. |
| Ano: 1996 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0104-79301996000100002 |
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| De Pauw, N.; Van Vaerenbergh, E.. |
| Algae can play a positive role in wastewater treatment by recycling of nutrients, by taking up carbon, nitrogen and phosphorus, by reducing the nutrient load through stripping and precipitation, by producing oxygen for bacterial decomposition of organic matter, by eliminating pathogenic bacteria through bactericide action, and last but not least by solving odor problems. If sufficient insolation, and space are available, intensive algal wastewater treatment-systems proved to be valuable and promising alternatives to conventional treatment systems based on activated sludge or trickling filters. The various technologies developed for algal wastewater treatment are commented in this review. They include simple stabilization-oxidation ponds, as well as more... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Waste water; Wastewater treatment. |
| Ano: 1983 |
URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=3350 |
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| Anajjar, E; Chiffoleau, Jean-francois; Bergayou, H; Moukrim, A; Burgeot, Thierry; Cheggour, M. |
| Concentrations of seven metals (Cd, Cu, Cr, Pb, Ni, Zn, Hg) were monitored monthly during 2 years in two bivalves, Cerastoderma edule and Scrobicularia plana collected from the Souss estuary (South Morocco) before and after the commissioning of a sewage treatment plant in November 2002. According to trace metals, changes in concentrations were observed mainly in S. plana, characterised by a decrease of Cu, Hg and Pb when Cd was clearly increasing. Conversely, no clear changes were observed in C. edule during the same periods. This study suggests the use of S. plana in the monitoring of trace metal contamination of such coastal marine environments. |
| Tipo: Text |
Palavras-chave: Monitoring; Waste water; Bivalves; Metals; South estuary. |
| Ano: 2008 |
URL: http://archimer.ifremer.fr/doc/2008/publication-4515.pdf |
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| Adingra, A.A.; Kouassi, A.M.. |
| La pollution induit et entraîne au quotidien la dégradation du milieu lagunaire Ebrié, avec des conséquences et des impacts multiformes sur la santé humaines et le développement socio économique. Les moyens financiers et matériels disponibles doivent être renforcés substantiellement pour mettre en place des infrastructures et des aménagements d'assainissement adéquats, tels que les centres d'enfouissements techniques de déchets d'une part, ainsi que les stations de traitement et d'épuration des eaux usées domestiques et industrielles d'autre part. De même, l'amélioration des compétences et des capacités en ressources humaines des différents acteurs institutionnels, reste déterminante pour le suivi et le contrôle de la qualité de l'eau ainsi que la gestion... |
| Tipo: Journal Contribution |
Palavras-chave: Water pollution; Water quality control; Waste water; Water reclamation. |
| Ano: 2011 |
URL: http://hdl.handle.net/1834/5812 |
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| Romero, Teresita de J.; Manso, B.M.; López, R.; Martínez, F.C.; Moreno, M.. |
| El incremento sustancial de la acuicultura cubana y la carencia de algunos fertilizantes usados para fines de cultivo fitoplantónico, que finalmente pasan a nutrir especies zooplanctónicas como el cladócero Moina, ha dado pauta para realizar el presente estudio, referido al cultivo de dicha especie con la microalga Chlorella spp. desarrollada previamente con riles orgánicos de la industria pesquera. Se realizaron dos tandas experimentales: 1) en acuarios de 50 L de capacidad efectiva 2) en tanquetas de 180 L. Se hallaron parámetros poblacionales derivados del desarrollo del zooplancton y se evaluó la calidad del agua. Como conclusión se señala que Chlorella spp. cultivada con los riles orgánicos de la industria pesquera resultó un alimento adecuado para el... |
| Tipo: Preprint |
Palavras-chave: Cultures; Waste water; Waste water; Http://aims.fao.org/aos/agrovoc/c_24927. |
| Ano: 2010 |
URL: http://hdl.handle.net/1834/3592 |
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| Registros recuperados: 18 | |
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