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Esta pesquisa propõe uma metodologia para avaliar o potencial de reciclagem de resíduos e indicar as aplicações mais sustentáveis, considerando aspectos econômicos, de mercado, ambientais e de risco à saúde humana. A idéia central é avaliar o uso do resíduo baseado em suas características e propriedades físico-químicas e, a partir disso, identificar áreas potenciais que possam absorvê-lo da forma mais sustentável possível. A avaliação da aplicabilidade foi realizada com base em requisitos identificados por especialistas de diversas áreas. A metodologia foi testada para avaliar o potencial de reciclagem dos resíduos de tratamento de esgoto e dos resíduos de construção e demolição (RCD). / This research suggests a methodology to evaluate the recycling potential of waste products and to indicate the most sustainable applications regarding economical, market, environmental and hazard to human health aspects. The main idea is to evaluate the use of the waste based on its physico-chemical characteristics and properties, and then, to identify potential areas to absorb them, through sustainable processes. The evaluation of the applicability has been based on requirements identified by specialists from several areas. The methodology has been applied to evaluate the recycling potential of sewage sludge wastes and construction and demolition wastes (CDW).

Current evidence suggests that development and industrialization has engendered the manufacture and use of chemical products which may harm human health and degrade the environment. One of the most pressing environmental needs since World War II is perhaps the issue of how society either manages or mismanages hazardous wastes. The purpose of this study was to assess current management and disposal practices among Small Quantity Generators (SQG) and Conditionally Exempt Generators (CEG) in Benton County, Oregon. Study objectives included identification of the number of registered and nonregistered SQGs and CEGs, identification of the types of businesses, estimation of the quantities of hazardous wastes produced and used, and assessment of current levels of awareness among generators of hazardous wastes of pertinent regulations and safe environmental practices. A survey instrument was used to collect data during in-person interviews with representatives from a total of 48 businesses in Benton County. Findings indicated that the majority of both the registered (70%) and nonregistered (72.2%) businesses performed cleaning and degreasing activities at their business locations. Other activities, in order of importance, included fabrication, retail sales, manufacturing, and painting. With respect to the types of wastes produced or used, the majority of the respondents indicated the production or use of waste oils and aqueous liquids. Similarly, the majority of registered businesses (96.7%) indicated that they provided employee training in hazardous waste management. Asked to identify their method of disposal, both SQG and CEG respondents listed return to supplier, recycle on-site, treatment, storage and disposal facilities, garbage/landfills, evaporation, and sales of wastes, in order of importance, as their preferred method of disposal. Most of the respondents indicated that their principal recycled wastes were solvents and oils, followed by refrigerated gases and other products. The study also considered the influence of state and federal laws and regulations as applied to hazardous wastes, and whether or not these administrative rules created a problem for Benton County businesses. In contrast to prior studies which have indicated that among most businesses federal and state laws and regulations were regarded as too complex and inflexible, or who complained that lack of access to information or lack of time to remain informed served as significant constraints upon their ability to comply, the majority of Benton County businesses indicated "no problem" with the administrative rules. The conclusion of the study was that an overall comparison of Benton County SQGs and CEGs does not provide clear and convincing evidence that nonregistered businesses, by virtue of the regulatory exemption, practice illegal hazardous waste disposal and management procedures to a greater degree than the more fully regulated registered business. / Graduation date: 1993

Thesis (Ph. D.)--University of Missouri-Columbia, 1999. / Typescript. Vita. Includes bibliographical references. Also available on the Internet.

Thesis (Ph. D.)--University of Missouri-Columbia, 2000. / Typescript. Vita. Includes bibliographical references. Also available on the Internet.

Thesis (M.S.)--California Polytechnic State University, 2009. / Mode of access: Internet. Title from PDF title page; viewed on Jan. 7, 2010. Major professor: Dr. Sean Hurley. "Presented to the faculty of California Polytechnic State University, San Luis Obispo." "In partial fulfillment of the requirements for the degree of Master of Science in Agribusiness." "December 2009." Includes bibliographical references (p. 75-77).

Thesis (Ph. D.)--University of Missouri-Columbia, 1997. / Typescript. Vita. Includes bibliographical references (leaves 180-182). Also available on the Internet.

Thesis (M.S.)--Mississippi State University. Department of Chemical Engineering. / Title from title screen. Includes bibliographical references.

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This dissertation examines the regulatory measures/legislation governing the road transportation of hazardous waste in South Africa, the United States, Australia and Britain. The document compares the legislation/regulatory measures that exist in South Africa to those that exist in the United States, Australia and Britain. In so doing the document highlights the shortcomings that presently exist in the legislation/regulatory measures governing the road transportation of hazardous waste in South Africa as well as the shortcomings that exist in the legislation/regulatory measures governing the road transportation of hazardous waste in the United States, Australia and Britain and which must therefore be avoided. The document concludes by suggesting improvements which can and ought to be made to the South African law governing the road transportation of hazardous waste. / Thesis (LL.M.)-University of Natal, Pietermaritzburg, 1998.