Remoção de cromo de resíduos de curtumes por argilitos da formação Corumbataí - SP

The tanning wastes are characterized to be significant sources of pollution in the hydrosphere when non adjusted or disposed adequated form. That happens because this industry type uses the chromium to tan hides, and this element is present in discharges concentrations in final wastes, characterizing this waste type as dangerous, according to the Associação Brasileira de Normas Técnicas, através da Norma Brasileira 10.004 de 2004. Due to this, the research proposes a form to reduction chromium of the tanning wastes through the process of adsorption. For that were used mining-wastes of Corumbataí Formation clays, material commonly used in the production of ceramic products in Rio Claro (SP). They were accomplished laboratory essays that involved the preparation of different clays pulps and subsequent mixture of these with the tanning wastes, maintaining them under different mixing times and adsorption contacts. After the separation of the mixtures, the leached were chemically analyzed and it was seen the efficiency of chromium reduction and your relationship with the variation of different times of contact clays/wastes and different grain sizes used in the pulps preparation.

Descontaminação do resíduo industrial de couro, uma proposta para o desenvolvimento sustentável nos curtumes

Pós-graduação em Ciência e Tecnologia de Materiais - FC

Encapsulamento do cromo proveniente do lodo de curtume, em matrizes de cimento, visando a resistência mecânica à compressão e os limites de lixiviação e solubilização

Pós-graduação em Ciência e Tecnologia de Materiais - FC

Incorporação do resíduo serragem cromada em materiais de construção civil

Pós-graduação em Engenharia Mecânica - FEB

Tratamento físico-químico de efluentes de curtume por meio de filtros de membrana seletiva

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Avaliação do lodo de curtume como fonte de nutrientes para o crescimento inicial de eucalipto

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Preparação e caracterização de compósitos condutores obtidos a partir da borracha natural com raspa de couro e negro de fumo

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Efeitos da disposição de lodos de curtume no solo e na planta

Pós-graduação em Geociências e Meio Ambiente - IGCE

Aplicações da técnica de fotoeletrocatálise na oxidação de corantes ácidos, corantes dispersos, surfatantes e na redução de 'CR'((VI) e bromato em efluentes usando eletrodos nanoporosos de 'TI'/'TI''O IND.2'

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Práticas de gestão ambiental das indústrias coureiras de Franca-SP

The leather footwear industry is an important sector in the Brazilian economy. The tannery industry accounted for $ 2.05 billion to exports in 2011, which represents a contribution of 6.86% to the Brazilian balance of trade. However, it is a highly polluting industry generating highly toxic and hazardous waste. Therefore, it is extremely important to search for environmental management actions that allow a cleaner production and waste recycling to prevent its discharge into the environment resulting in the deterioration of nature and quality of human life. Thus, based on a literature review and exploratory research, this study consisted of an analysis of some environmental management actions adopted by the leather industry in Franca - SP verifying if the industries have certifications or follow standards that characterize a responsible environmental management. This study is justified by the fact that tanneries and footwear industries produce highly hazardous waste, and therefore environmental actions are necessary to treat the waste effectively in order to minimize its environmental impacts. The literature review and empirical research conducted demonstrated the development of new techniques and technologies aiming at mitigating the impacts of leather waste in the environment. These actions are crucial for companies to remain competitive and focused on sustainability in this rapidly growing market.

Tratamento de efluente de curtume por biofiltro aerado Submerso pré-tratado com microfiltro de membrana

Pós-graduação em Engenharia Civil - FEIS

Adsorção do corante luganil azul por espuma de poliuretano

The industrial development has created many environmental problems that can be observed through the changes in air, soil and water. The pollution of water bodies with compounds present in textile effluents cause beyond the visual pollution, changes in biological cycles, mainly by changing the process of photosynthesis. Due to these environmental implications it is necessary a treatment of livestock manure. The process of adsorption of the dye is a technique that has been successfully employed for effective removal of the color of the effluent. The purpose of this study was to investigate the application of a polyurethane foam plant of castor oil as an alternative adsorbent for removal of dyes in textile effluents. The study was conducted with the dye “luganil azul”, as adsorbent and the foam in a flexible manner and sprayed. It also investigated the influence of pH on the adsorption dye. The kinetic data were obtained, noting that the pH influence on adsorption. Adsorption isotherms of the dye in aqueous solution using the foam in a flexible manner also were determined experimentally.

Preparação e caracterização de compósitos expandidos obtidos a partir de raspa de couro com borracha natural

Não disponível

Valoração do tratamento de efluentes de um curtume

During the production process of leather a lot of water is used. In addition, companies such as tanneries have high pollution potential. The effluent that is not properly treated , and it is irregularly released in water bodies can cause negative impacts to the environment and generate fines. The aim of this paper is to present the importance of environmental valuation in the effluent treatment system of a tannery, in order to add social and economic development with preservation of environmental quality. A valuation of inputs and outputs of the effluent treatment process from Tannery Bull in Presidente Prudente was made, as well as a proposal to improve the treatment and its valuation. Many of these industries do not account the costs from the effluent treatment and end up spending what could have been avoided. The management of environmental costs promotes sustainable development. Thus, we can conclude that, if there were better control and also an improved management of the tannery, the proposed treatment would bring economic improvement to the company and specially it would not cause much impact on the environment, including improving the quality of life in the region