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Gerenciamento de resíduos sólidos industriais em uma empresa de usinagem sobre o enfoque da produção mais limpa; Industrial solid waste management in a machining company focussed on cleaner production

Simião, Juliana
Fonte: Biblioteca Digitais de Teses e Dissertações da USP Publicador: Biblioteca Digitais de Teses e Dissertações da USP
Tipo: Dissertação de Mestrado Formato: application/pdf
Publicado em 27/05/2011 PT
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As atividades industriais geram resíduos sólidos, de diferentes características e quantidades, que precisam ser gerenciados adequadamente para não causar poluição ambiental e danos à saúde do homem. A Lei n.o 12.305/2010, que institui a Política Nacional dos Resíduos Sólidos, estabelece a seguinte ordem de prioridade no gerenciamento dos resíduos: não geração, redução, reutilização, reciclagem, tratamento dos resíduos e disposição final ambientalmente adequada dos rejeitos. A adoção destas estratégias no gerenciamento dos resíduos industriais é um desafio tendo em vista que a maioria das empresas ainda está focada na abordagem convencional de fim-de-tubo. Especial atenção ainda deve ser dada as empresas de pequeno e médio porte que costumam apresentar maiores dificuldades para o desenvolvimento de práticas de gestão ambiental por disporem de recursos financeiros mais limitados que empresas maiores, além de normalmente contarem com uma falta de estrutura organizacional adequada. A produção mais limpa pode ser uma importante aliada no gerenciamento dos resíduos sólidos, pois se trata da aplicação de uma estratégia técnica, econômica e ambiental integrada aos processos e produtos, com o objetivo de aumentar a eficiência no uso de matérias-primas...

ECO-Kanban: sistematização no reaproveitamento de resíduos industriais.; ECO-Kanban: systematization of recycling of industrial waste.

Hamzagic, Miroslava
Fonte: Biblioteca Digitais de Teses e Dissertações da USP Publicador: Biblioteca Digitais de Teses e Dissertações da USP
Tipo: Tese de Doutorado Formato: application/pdf
Publicado em 09/06/2010 PT
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Alguns fatores influenciam a competitividade das organizações na atualidade, frente às empresas globais: a utilização de tecnologia de ponta, a difusão do conhecimento, a preocupação com questões ambientais, entre outros. Este último fator tem sido de grande interesse, devido a todas as mudanças que o mundo tem enfrentado. Para todas as empresas, a busca pela mudança de processos e pela extinção de atividades poluidoras não tem sido muito fácil. Uma das maiores dificuldades é inserir ações de reaproveitamento nas atividades do dia a dia da empresa, aproveitando práticas que vem sendo utilizadas com resultados positivos. Sistemas de administração da produção, ferramentas como kanban podem ser um dos exemplos destas práticas, ou seja, a sistematização das informações consideradas vitais para a empresa. Este trabalho tem o objetivo de propor um modelo de sistematização das informações sobre resíduos, através da utilização do kanban, como forma de auxiliar o reaproveitamento destes resíduos entre membros da cadeia produtiva. A metodologia proposta é tanto experimental, do modelo em teste, uma vez que o modelo foi testado por quatro empresas, como observação participante e a abordagem é triangular...

Gestão integrada de resíduos industriais: análise comparativa entre o Estado de São Paulo e Portugal; Integrated solid waste management: comparative analysis between the State of São Paulo and Portugal

Cruz, Jorge Manuel Mendes de Pinho da
Fonte: Biblioteca Digitais de Teses e Dissertações da USP Publicador: Biblioteca Digitais de Teses e Dissertações da USP
Tipo: Dissertação de Mestrado Formato: application/pdf
Publicado em 06/06/2014 PT
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Com o agravamento dos problemas ocasionados pelos resíduos, a busca de soluções e orientações se torna cada vez mais evidente. As empresas, enquanto geradoras de resíduos industriais, são obrigadas por Lei a efetuar um correto gerenciamento dos seus resíduos. Conhecer a legislação ambiental aplicável é, por conseguinte, crucial para qualquer organização. O tema que se pretende desenvolver é a Gestão Integrada de Resíduos Industriais: análise comparativa entre o Estado de São Paulo e Portugal. Este trabalho tem como objetivo geral realizar um estudo comparativo entre o Estado de São Paulo, representativo do Brasil, e Portugal, no que tange a gestão integrada de resíduos industriais, tendo como base os diplomas legais que regulam esta matéria em ambos os países, bem como dar uma visão global e sintética do funcionamento da gestão integrada de resíduos industriais em São Paulo e em Portugal. A metodologia a ser usada terá em conta a análise das políticas públicas voltadas para a gestão integrada de resíduos industriais e será realizada com base em pesquisas bibliográficas e revisão documental. O levantamento de dados e das principais exigências legais terá como forma dominante o uso de bancos de dados legais via internet...

Production and application of amylases of Rhizopus oryzae and Rhizopus microsporus var. oligosporus from industrial waste in acquisition of glucose

Costa de Freitas, Aline; Escaramboni, Bruna; Carvalho, Ana Flávia Azevedo; de Lima, Valéria Marta Gomes; de Oliva-Neto, Pedro
Fonte: Universidade Estadual Paulista Publicador: Universidade Estadual Paulista
Tipo: Artigo de Revista Científica Formato: 1-9
ENG
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Amylases from Rhizopus oryzae and Rhizopus microsporus var. oligosporus were obtained using agro-industrial wastes as substrates in submerged batch cultures. The enzymatic complex was partially characterised for use in the production of glucose syrup. Type II wheat flour proved better than cassava bagasse as sole carbon source for amylase production. The optimum fermentation condition for both microorganisms was 96 hours at 30°C and the amylase thus produced was used for starch hydrolysis. The product of the enzymatic hydrolysis indicated that the enzyme obtained was glucoamylase, only glucose as final product was attained for both microorganisms. R. oligosporus was of greater interest than R. oryzae for amylase production, taking into account enzyme activity, cultivation time, thermal stability and pH range. Glucose syrup was produced using concentrated enzyme and 100 g L-1 starch in a 4 hours reaction at 50°C. The bioprocess studied can contribute to fungus glucoamylase production and application. © 2013 Institute of Chemistry, Slovak Academy of Sciences.

Bioactive compounds of the lipid fractions of agro-industrial waste

Silva, Ana Carolina da; Jorge, Neuza
Fonte: Universidade Estadual Paulista Publicador: Universidade Estadual Paulista
Tipo: Artigo de Revista Científica Formato: 493-500
ENG
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This study aimed at evaluating the oils extracted from seeds originating from agro-industrial waste, in order to identify the presence of bioactive compounds. Therefore, determinations of fatty acid profile, triacylglycerols, tocopherol composition, phytosterols, phenolic compounds, total carotenoids, and antioxidant capacity were performed in the oils of grape, guava, melon, passion fruit, pumpkin, soursop, and tomato seeds. Antioxidant capacity analysis was performed by the methods DPPH• , ABTS•+, FRAP, and β-carotene/linoleic acid, besides measure of oxidative stability in the oils. The oils showed to be predominantly unsaturated with high percentage of linoleic essential fatty acid (38.8 to 79.4%), besides presenting significant quantities of tocopherols, phytosterols, and phenolic compounds. Tomato and guava oils showed better results in the antioxidant capacity tests and pumpkin oil had higher induction period in the oxidative stability test (65.3 h). The results obtained in this study collect information that enables the use of new alternative sources of vegetable oils, obtained from agroindustrial waste, which may serve as raw material for food, chemical, and pharmaceutical industries.

Composito de poliuretano de mamona e residuo industrial para isolacao termica e absorcao sonora

Oliveira, Maria Cleide Ribeiro de
Fonte: Universidade Federal do Rio Grande do Norte; BR; UFRN; Programa de Pós-Graduação em Engenharia Mecânica; Tecnologia de Materiais; Projetos Mecânicos; Termociências Publicador: Universidade Federal do Rio Grande do Norte; BR; UFRN; Programa de Pós-Graduação em Engenharia Mecânica; Tecnologia de Materiais; Projetos Mecânicos; Termociências
Tipo: Dissertação Formato: application/pdf
POR
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This work proposes the development of an innovative material made from a vegetable polyurethane matrix and load of industrial waste, from retread tires, for thermal insulation and environmental comfort. Experimental procedures are presented, as well as the results of the thermal and acoustic performance of this composite material, made from an expansive foam derived from the castor seed oil and fiber of scrap tires. The residue was treated superficially with sodium hydroxide, to eliminate contaminants, and characterized macroscopically and microscopically. Samples were produced with addition of residues at levels of 5%, 10%, 15% and 20% by weight, for determination of thermal properties: conductivity, heat capacity and thermal diffusivity, sound absortion index and density. The results were compared to commercially available thermal insulation and sound absorbing products. According to the analysis of results, it was concluded that the developed composite presents characteristics that qualify it as a thermal insulation with superior performance, compared to commercial available insulation, and sound absorption capacity greater than the castor oil polyurethane s, without addition of the residue; Neste trabalho tratou-se do desenvolvimento de um material inovador constituído de matriz poliuretânica vegetal e carga de resíduo industrial...

Estudo da incorporação de resíduo industrial polimérico ao CAP

Lima, Cristian Kelly Morais de
Fonte: Universidade Federal do Rio Grande do Norte; BR; UFRN; Programa de Pós-Graduação em Engenharia Química; Pesquisa e Desenvolvimento de Tecnologias Regionais Publicador: Universidade Federal do Rio Grande do Norte; BR; UFRN; Programa de Pós-Graduação em Engenharia Química; Pesquisa e Desenvolvimento de Tecnologias Regionais
Tipo: Dissertação Formato: application/pdf
POR
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This work presents the incorporation of an industrial polymeric waste into a petroleum asphalt cement with penetration grade 50-60 (CAP 50-60). The main goal of this research is the development of a polymer-modified asphalt, with improvements in its physical properties, in order to obtain a more resistant material to the traffic loads. Furthermore, the use of this polymeric waste will result in economic and environmental benefits. The CAP 50-60 used in this research was kindly supplied by LUBNOR Lubrificantes e Derivados de Petróleo do Nordeste (produced in Fazenda Belém Aracati - Ceará) and the industrial polymeric waste was provided by a button manufacturer industry, located in Rio Grande do Norte state. This polymeric waste represents an environmental problem due to its difficulty in recycling and disposal, being necessary the payment by the industry to a landfill. The difficulty in its reuse is for being this material a termofixed polymer, as a result, the button chips resulting from the molding process cannot be employed for the same purpose. The first step in this research was the characterization of the polymeric waste, using Differential Scanning Calorimetry (DSC) Infrared spectroscopy (IR spectroscopy), and Thermogravimetric analysis (TGA). Based on the results...

Solid Waste Management in Bulgaria, Croatia, Poland, and Romania : A Cross-Country Analysis of Sector Challenges Towards EU Harmonization

World Bank
Fonte: World Bank Publicador: World Bank
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The European Union (EU) sets the policy framework for municipal solid waste management that drives reform initiatives in new EU member states and candidate countries. The EU policies, implementation targets, and grant funding establish the enabling environment that transforms the solid waste management sector in Bulgaria, Croatia, Poland, and Romania. The EU directives guide member states towards agreed targets without prescribing in detail how specific measures should be implemented. Various directives establish the legal framework for solid waste management; provide specifics, and an implementation timetable: these include the waste framework directive, the landfill directive, and the waste incineration directive. This study analyzes progress in Bulgaria, Croatia, Poland, and Romania; and identifies important shortcomings towards meeting the requirements of the EU acquis communautaire. All four countries have had access to large amounts of assistance from EU programs and European financial institutions...

Improving Municipal Solid Waste Management in India : A Sourcebook for Policy Makers and Practitioners

Zhu, Da; Asnani, P. U.; Zurbrügg, Chris; Anapolsky, Sebastian; Mani, Shyamala
Fonte: Washington, DC: World Bank Publicador: Washington, DC: World Bank
EN_US
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Human activities create waste, and the ways that waste is handled, stored, collected, and disposed of can pose risks to the environment and to public health. Solid waste management (SWM) includes all activities that seek to minimize health, environmental, and aesthetic impacts of solid waste. In urban areas, especially in the rapidly urbanizing cities of the developing world, problems and issues of municipal solid waste management (MSWM) are of immediate importance. This book addresses the problem by focusing on India. A country such as India, with its high economic growth and rapid urbanization, requires immediate solutions to the problems related to mismanagement of urban waste. City managers are actively trying to understand the problem and are seeking effective ways of intervening. They realize that such interventions are essential to improving the quality of their cities and to reducing adverse health and environmental impacts. For cities to be sustainable and to continue their economic development, they must be clean and healthy. They need to improve their SWM systems by adopting good collection coverage...

Minimizing Environmental Impacts of Industrial Growth : Case Study of Petrochemical Industry in Kazakhstan

Peszko, Grzegorz
Fonte: World Bank, Washington, DC Publicador: World Bank, Washington, DC
EN_US
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Revival and development of the petrochemical industry in Kazakhstan is possible without serious damage to the environment, so long as measures by investors in plant revival include best available techniques (BATs) that avoid and minimize impact on the environment as a whole.This study was initiated to develop methodologies to analyze and mitigate key environmental and natural resource aspects of industrial growth and to propose ways to integrate these methodologies into policy tools. The emerging petrochemical industry was selected to demonstrate how methodology can be applied. The report is structured as two interrelated tools: Technical guidelines (chapters two and three) focus on (i) an analysis of availability of environmental resources in different oblasts; and (ii) references to internationally BATs in the production of polymers. These techniques avoid and minimize impact on the environment as a whole. Policy guidelines (chapters four and five) focus on policy instruments which would encourage plant developers to apply the best available techniques when developing potentially hazardous industrial production in Kazakhstan.

Strategic Environmental Assessment for Industry Sector Himachal Pradesh, India

World Bank
Fonte: Washington, DC Publicador: Washington, DC
Tipo: Relatório
EN_US
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This strategic environmental assessment (SEA) is a technical piece intended to assist in the current and future identification of priority industrial pollutants and economic instruments to minimize industrial waste. This industrial sector SEA is one of six pieces of technical support envisioned by the Himachal Pradesh (HP) inclusive green growth (IGG) development policy loan (DPL) to fill knowledge gaps and strengthen operational success of the DPL. The DPL acknowledges that industrial development is an important economic driver within HP, and that such development must be consistent with maintaining the integrity of other natural resource assets on which human health depend. The general objectives of the SEA study are: (i) to assist in identification of priority pollutants and industries; (ii) to review existing institutional structures that address these pollutants; (iii) to identify and recommend potential reform options through the introduction of new policy approaches; and (iv) to identify complementary institutional support necessary to implement such a program. The SEA was undertaken from April to December 2013 based on secondary data collection...

Residuos industriales y ordenación del territorio : la situación en Catalunya; Industrial waste and territorial planning : the example of Catalunya

Alió, Mª Angels; Brú, Josepa
Fonte: Universidad de Alcalá. Servicio de Publicaciones Publicador: Universidad de Alcalá. Servicio de Publicaciones
Tipo: Artigo de Revista Científica Formato: 748892 bytes; application/pdf
SPA
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El artículo explica la evolución de la ocupación del suelo ligada al impacto ambiental del manejo de los residuos sólidos industriales en Catalunya, desde la década de los sesenta. Muestra la práctica del vertido clandestino y su distribución territorial en base a las evaluaciones de costo/beneficio realizadas por las empresas. Se analizan, finalmente, las medidas adoptadas por en Gobierno Catalán a fin de controlar la situación y el comienzo de ima política de gesüón de los residuos que reconoce la gravedad del problema de la contaminación de suelos concede mayor importancia a la prevención.; The article explains the evolution of territorial use conceming the environmental impacts of industrial waste management in Catalonia from the sexteens. It shows the practice of illegal dumping and their territorial pattem resulting from the companies cost/benefits evaluations. It explains also the Catalan Government mesures nowadays in order to control the situation, recognizing the problem of soil contamination and starting a more preventing waste envirorunental policy.

Estudo da produção de biossurfactante, usando resíduos agroindustriais com desenvolvimento de modelos estatísticos e sensor virtual por modelagem neural : Study of biosurfactant production, using agro-industrial waste with development of statistical models and soft sensor by artificial neural network; Study of biosurfactant production, using agro-industrial waste with development of statistical models and soft sensor by artificial neural network

Brunno Ferreira dos Santos
Fonte: Biblioteca Digital da Unicamp Publicador: Biblioteca Digital da Unicamp
Tipo: Tese de Doutorado Formato: application/pdf
Publicado em 27/07/2015 PT
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Biossurfactantes são moléculas com diversas aplicações industriais. Porém a produção do mesmos é prejudicada devido à utilização de meios de fermentação caros, metodologias ineficientes, falta de acompanhamento em tempo real do produto, dentre outras. O presente trabalho visou estudar a produção de biossurfactante por Bacillus subtilis em meio de fermentação a base de resíduos agroindustriais (glicerina residual, casca de beterraba e água de maceração de milho) pelo desenvolvimento de metodologias auxiliadas por modelagem estatística (construção de curva de resposta e curvas de contorno) e modelagem com redes neurais para construção de sensor virtual. Foi desenvolvido um DCCR em experimentos com Erlenmeyers para direcionamento da concentração de meio de fermentação e por análise da superfície de resposta e curvas de contorno chegou-se a valores de composição do meio de cultivo de 6% e 7,5% (v/v) de glicerina e casca de beterraba, respectivamente. Em seguida, fez-se outro DCCR para otimizar as condições do fermentador 7 L (volume nominal), agitação e aeração do meio. Assim, determinou-se 200 rpm para agitação e 0,5 vvm para aeração por avaliação de superfície de resposta e curvas de contorno...

Green Industrial Growth : Mainstreaming Environmental Sustainability in Pakistan's Industrial Sector

Sanchez-Triana, Ernesto; Ortolano, Leonard; Afzal, Javaid
Fonte: World Bank, Washington, DC Publicador: World Bank, Washington, DC
Tipo: Economic & Sector Work :: Economic Updates and Modeling; Economic & Sector Work
ENGLISH; EN_US
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Pakistan's growth strategy for the economy, as outlined in the 2011 framework for economic growth, calls for reinvigorating the industrial sector and increasing exports. The industrial structure of the country has not experienced any significant changes in the past thirty years. Inadequate industrial environmental performance is an important contributor to the weak export performance of Pakistan's industrial sectors. The relationship between Pakistan's goals for industrial expansion and export growth and the environmental performance of Pakistani firms is the central theme of this report, which is framed as follows: Pakistan's industry is outdated and risks losing markets at a time when it may have the opportunity to occupy the space being left by manufacturing giants like China. This report is organized as follows: chapter two sets the stage for the remaining chapters by discussing the relationships between industrial development and environmental degradation in Pakistan. Chapter three summarizes empirically established linkages between environmental performance and export competitiveness...

Evaluation of antioxidant activity of agro-industrial waste of acerola (Malpighia emarginata D.C.) fruit extracts

Caetano,Ana Carla da Silva; Araújo,Cristiane Rodrigues de; Lima,Vera Lúcia Arroxelas Galvão de; Maciel,Maria Inês Sucupira; Melo,Enayde de Almeida
Fonte: Sociedade Brasileira de Ciência e Tecnologia de Alimentos Publicador: Sociedade Brasileira de Ciência e Tecnologia de Alimentos
Tipo: Artigo de Revista Científica Formato: text/html
Publicado em 01/09/2011 EN
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This study was carried out to evaluate the antioxidant capacity of the agro-industrial waste from acerola. Hydroacetone, hydroethanolic, and hydromethanolic extracts were obtained using the sequential extraction process, and they were screened for their free radical DPPH• (1,1-diphenyl-2-picrilhidrazil) and ABTS•+ (2,2'-azino-bis-(3-etilbenzotiazolin 6-sulfonic acid) scavenging activity and their effect on the linoleic acid peroxidation by the ferric thiocyanate method. Soybean oil with the addition of the extracts (200 ppm) was submitted to Schaal oven test (60 °C, 28 days), in which the samples were analyzed for peroxide value and conjugated dienes. Hydroethanolic and hydromethanolic extracts exhibited good DPPH scavenging activity (low value of EC50 and TEC50 and high value of AE), good ABTS scavenging capacity (1445.1 and 1145.5 µMol TEAC.g-1, respectively), and high percentage inhibition of peroxidation of linoleic acid (96.12 and 91.84%, respectively) and showed the ability to retard the formation of peroxides and conjugated dienes.

Utilización de residuos industriales procedentes de plantas de cogeneración de biomasa en el diseño de morteros con base cemento; Use of Industrial Waste from Biomass Cogeneration Plants in the Design of Cement-based Mortars

Ballester, P.; Hidalgo López, Ana; Mármol, I.; Morales, Julián; Sánchez, L.
Fonte: Consejo Superior de Investigaciones Científicas (España) Publicador: Consejo Superior de Investigaciones Científicas (España)
Tipo: Comunicación de congreso Formato: 243086 bytes; application/pdf
SPA; ENG
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Comunicación presentada en las II Jornadas de Investigación en Construcción: "60 años de Informes de la Construcción", celebradas los pasados 22, 23 y 24 de mayo de 2008 en el Instituto "Eduardo Torroja" de Ciencias de la Construcción (IETCC-CSIC) de Madrid.; [EN] The use of industrial waste with hydraulic or pozzolanic properties -silica fume, fly ash, blast furnace slag- as admixtures in cement based materials are focused to decrease the production costs, to improve micro-structural properties of the end product and also, in environmental aspects of converting waste materials into added value components.; The use of olive biomass for cogeneration plants is an emerging activity in the energy field, which produces vast amounts of mineral waste (fly ash and slag). This paper studies the value of this industrial waste such as new components in the production of construction mortar. From application point of view, the object of the research focused on the incorporation of ashes in the mortar replacing part of the filler.; [ES] El uso de residuos industriales con propiedades hidráulicas o puzolánicas -humo de sílice, cenizas volantes, escorias de altos hornos- como componente en materiales con base cemento está enfocado a disminuir los costes de producción...

A DEPOSIÇÃO DE RESÍDUOS INDUSTRIAIS ORGANOCLORADOS NO LITORAL DO ESTADO DE SÃO PAULO: UM ESTUDO DE CASO DOI: 10.5773/rai.v8i2.700; THE ORGANOCHLORINES INDUSTRIAL WASTE LANDFILL IN COAST OF SÃO PAULO: A CASE STUDY DOI:10.5773/rai.v8i2.700

Côrtes, Pedro Luiz; Alves Filho, Ailton Pinto; Ruiz, Mauro Silva; Teixeira, Cláudia Echevenguá
Fonte: Universidade de São Paulo. Economia, Administração e Contabilidade Publicador: Universidade de São Paulo. Economia, Administração e Contabilidade
Tipo: info:eu-repo/semantics/article; info:eu-repo/semantics/publishedVersion; Formato: application/pdf
Publicado em 31/08/2011 POR
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A industrialização no Estado de São Paulo teve início no fim do século XIX, intensificando-se na segunda metade de século XX. Parte desse processo ocorreu sem o suporte de leis ambientais, que somente surgiram no estado em meados dos anos 1970. Em decorrência disso, parte do processo de industrialização ocorreu na ausência de um manejo adequado de resíduos, provocando a contaminação ambiental em regiões industriais nas cidades do Estado de São Paulo. Este trabalho apresenta um estudo de caso sobre disposição irregular de resíduos industriais organoclorados no litoral do estado, efetuada pela Clorogil S.A. durante parte dos anos 1960 e 1970. Tem como objetivo compreender como foi efetuada a disposição dos resíduos e os problemas ambientais decorrentes dela. Como não houve registro de muitas das áreas empregadas como depósito irregular, é sumarizada a metodologia utilizada para descobrir e caracterizar esses depósitos, anos após a sua utilização. Adicionalmente, são analisadas algumas técnicas para recuperação das áreas contaminadas por resíduos industriais organoclorados. Este trabalho justifica-se pelo fato de que os resíduos industriais descartados estão classificados como Poluentes Orgânicos Persistentes...

Removal Of Metallic Contaminants From Industrial Waste Waters By The Use Of Greensands, A Preliminary Report

Spoljaric, N.; Crawford, W.A.
Fonte: Newark, DE: Delaware Geological Survey, University of Delaware Publicador: Newark, DE: Delaware Geological Survey, University of Delaware
Tipo: Relatório
EN_US
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The Delaware Geological Survey, in cooperation with the U. S. Bureau of Mines, has investigated glauconite-bearing greensand deposits in Delaware for several years. The purpose of this effort is to find possible practical uses for this potentially important mineral resource. This report briefly describes the preliminary results of one phase of the study: application of greensands to the purification of industrial waste waters.

Selenium impurity in sodium sulphate decahydrate formed by eutectic freeze crystallization of industrial waste brine

Apsey,G; Lewis,A.E
Fonte: Journal of the Southern African Institute of Mining and Metallurgy Publicador: Journal of the Southern African Institute of Mining and Metallurgy
Tipo: Artigo de Revista Científica Formato: text/html
Publicado em 01/05/2013 EN
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Eutectic freeze crystallization (EFC) is a novel technique for the recovery of pure salt and pure water from hypersaline waste brines. It is therefore a promising technology for the treatment of industrial waste waters. The impurities caused by crystallizing salt out of multi-component brines by EFC have not yet been investigated, however. To these ends, the selenium impurity found in sodium sulphate, produced from the waste brine of a platinum operation, was investigated. It was believed that the similarity between sulphate and selenate ions allowed isomorphous substitution of selenate ions into the sodium sulphate crystals, which was the likely cause of impurity uptake. It was found that the presence of sodium chloride in the industrial brine promotes the uptake of selenium, while ionic strength of the brine and mass deposition rate of sodium sulphate did not have a significant effect on the selenium uptake. Isomorphous substitution is predicted to be the most significant mechanism by which all impurities will be taken up when applying EFC to other industrial waste brines.

A meta-analysis of mortality data in Italian contaminated sites with industrial waste landfills or illegal dumps

Fazzo,Lucia; Minichilli,Fabrizio; Pirastu,Roberta; Bellino,Mirella; Falleni,Fabrizio; Comba,Pietro; Bianchi,Fabrizio
Fonte: Istituto Superiore di Sanità Publicador: Istituto Superiore di Sanità
Tipo: Artigo de Revista Científica Formato: text/html
Publicado em 01/09/2014 EN
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Objectives. Adverse effects of waste management represent a public health issue. Mortality meta-analysis in Italian National Priority Contaminated Sites (NPCSs) with industrial waste landfills or illegal dumps is presented. Methods. 24 NPCSs include industrial waste landfills or illegal dumps. Class 1 (10 NPCSs with industrial waste landfills) and Class 2 (14 NPCSs with illegal dumps) were categorized. Random-effects model meta-analyses of Standardized Mortality Ratios non-adjusted (SMRs) and adjusted for Deprivation (DI-SMRs) computed for each CS (1995-2002) were performed for overall 24 NPCSs and the two classes. The North-Southern gradient was considered. Results. 24 CSs pooled-SMRs are significantly increased in both genders for cancer of liver (men: SMR = 1.13; women: SMR = 1.18), bladder (men: SMR = 1.06; women: SMR = 1.11), and for cirrhosis (men: SMR = 1.09; women: SMR = 1.13). In Class 2 the increase is confirmed in both genders for liver and bladder cancers and for cirrhosis and in men only for lung cancer. Congenital anomalies and adverse perinatal conditions are not increased. Conclusion. The results are consistent with the hypothesis of adverse health effects of non-adequately managed hazardous waste. Causal interpretation is not allowed...