Aluminum Sulphate
Mostrando 1-12 de 14 artigos, teses e dissertações.
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1. Pós-tratamento de efluente têxtil usando coagulação/floculação combinado com processos de separação por membranas
The textile industry uses large volumes of water in their processes, especially in the dyeing step, which are also used large quantities of coloring agents and textile auxiliaries. The presence of these products in the effluent generates a harmful effect and clearly visible to the environment because they cause changes in the parameters of the receiving body
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 2012
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2. Estudo hidrogeológico de um aterro sanitário instalado em uma antiga área de disposição irregular de resíduos sólidos / Hydrogeological research of a landfill set up in a previously irregular solid waste disposal area
In the past, the disposal of solid residue without any type of treatment and control was a common and widespread practice. As a result of that, the old areas used as dump have become a serious environmental and public health problem. Some of these areas are being reused in constructions now known as landfills, this time in a way that they arent a threat anym
Publicado em: 2009
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3. Dissolved air Flotation , for clarifying water with low turbidity using aluminum sulphate and Moringa oleifera seeds as coagulants / Flotação por ar dissolvido na clarificação de águas com baixa turbidez utilizando sulfato de alumínio e sementes de Moringa oleifera como coagulantes
This work aims to investigate the process of Dissolved air Flotation (DAF) for clarifying water samples with low turbidity using aluminum sulphate and Moringa oleifera seeds as coagulants. The experimental procedure was carried out in a bench scale flotation unit. The influences on the pre-treatment conditions (coagulant dosage and flocculation time) and flo
Publicado em: 2008
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4. Ruptura e recrescimento de flocos em água com substâncias húmicas aquáticas coagulada com sulfato de alumínio e cloreto férrico / Breakage and regrowth of flocs in water with aquatic humic substances coagulated with aluminum sulphate and ferric chloride
Por meio de ensaios em reatores estáticos (em equipamento de jarteste) foram estudados os efeitos da ruptura e da refloculação na sedimentação dos flocos, para diferentes velocidades de sedimentação. A água de estudo foi preparada com substâncias húmicas aquáticas (SHA) extraídas de água coletada do rio Itapanhaú - Bertioga/SP, resultando cor v
Publicado em: 2008
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5. Groundwater quality assessment in a kaolin mining area: environmental impacts and remediation prospects, Mogi das Cruzes county, SP / Avaliação da qualidade da água subterrânea em área de mineração de caulim: impactos e perspectivas de remediação, município de Mogi das Cruzes, SP
The objective of this research was to evaluate the quality of groundwater in a kaolin mining in the municipality of Mogi das Cruzes/SP. The mining is inserted in the Water Catchment Protection Area of the Metropolitan Region of São Paulo and according to past descriptions, presented geochemical anomalies associated with aluminum, iron, manganese, zinc and s
Publicado em: 2007
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6. APLICAÇÃO DO PROCESSO ELETROLÍTICO NO TRATAMENTO DE EFLUENTES DE UMA INDÚSTRIA PETROQUÍMICA / APPLICATION OF THE ELECTROLYTIC PROCESS IN THE TREATMENT OF WASTEWATER FROM A PETROCHEMICAL INDUSTRY
The petrochemical industry constitutes one of the most important industrial sectors in Brazil. The great diversity of processes of manufacture makes to increase the necessity of characterization of the effluents generated in each industrial plant. In general, the effluents presents high grade of organic matter, whose removal is necessary to expect to the tec
Publicado em: 2007
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7. Formulation and evaluation of baking powders to be use in cakeâs pre-mixtures / FormulaÃÃo e avaliaÃÃo de fermentos quÃmicos para prÃ-mistura de bolo
A baking podwer is a product formed by a mixture of acid agents with sodium bicarbonate which with the influence of the heat and/or humidity, produces carbon dioxide capable of expanding the dough made with flour and starches, increasing its volume and the porosity. The objective of the present work was to optimize a formula for a baking powder to be used in
Publicado em: 2007
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8. The influence or coagulation pH and concentration of aluminum sulphate in the removal of Cryptosporidium oocysts by down flow direct filtration / Influência do ph de coagulação e dosagem de sulfato de alumínio na remoção de oocostos de cryptosporidium por filtração direta descendente
Algumas doenças de veiculação hídrica têm se destacado nas últimas décadas, dentre elas a criptosporidiose, causada pelo protozoário Cryptosporidium. Este protozoário vem se destacando pela elevada incidência de casos e devido às suas características de resistência aos processos convencionais de desinfecção com cloro e à capacidade de perman�
Publicado em: 2007
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9. Remoção de Oocistos de Cryptosporidium por filtração direta: Influência de alguns aspectos operacionais / Removal of Cryptosporidium Oocysts by direct filtration: the influence some operational aspects
The present work deal with the removal of Cryptosporidium oocysts by downflow direct filtration with almost uniform filter bed to verify the influence of operational aspects such as coagulant dosage, filtration flow rate and raw waters characteristcs. The experimental work was carried out in pilot-plant comprised by a hydraulic flash mixing device and a rapi
Publicado em: 2006
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10. USE OF THE TANNING BARK IN THE PROCESS OF WATER TREATMENT AS IMPROVEMENT IN ENVIRONMENTAL SYSTEM / USO DO TANINO NO PROCESSO DE TRATAMENTO DE ÁGUA COMO MELHORIA EM SISTEMA DE GESTÃO AMBIENTAL.
The present work carried through frigorific in Rio Grande do Sul state , had for objective to evaluate the use and application of the floculante agent tanning bark in the water treatment as well as of the deriving water of the effluent treatment station making possible its reuse. The evaluated tecnology aims at to get improvement in the system of water manag
Publicado em: 2005
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11. Coagulação/floculação de suspensões ricas em óxidos de ferro por sulfato de alumínio
The destabilization mechanism of suspensions of positively charged iron oxide particles by aluminum sulphate was investigated, aiming to evaluate the efficiency of the latter as a coagulant for natural surface waters from iron ore mining plants. Synthetic waters that simulate natural suspensions were used. The best coagulant dosage was found to be 100 mg/L a
Química Nova. Publicado em: 2004-10
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12. ESTUDO DO IMPACTO AMBIENTAL NOS CURSOS DÁGUA CAUSADO PELO LANÇAMENTO DE EFLUENTES DE INDÚSTRIAS DO MUNICÍPIO DE ITABIRITO / MG
In this work the environmental impact caused by effluent discharger was studied of the main industries of the city of Itabirito, that it is situated in the metallurgic zone of Minas Gerais. The industries with highnt polluting potential of Itabirito are of the sectors textile, siderurgy and slaughter house. Water samples of the streams and effluent of these
Publicado em: 2004