No description available.

Thesis (M.Phil. (Environmental Law and Management)) --University of Limpopo, 2009 / In this study hazardous waste is defined as well as its classes.The current status of hazardous waste management, available legislation,enforcement and minimum requirements are discussed.Hazardous waste chemicals produced at University of Limpopo (Turfloop Campus),their amounts and their management were determined.They are compared to minimum requirements from Department of Water Affairs and Forestry.Other Universities hazardous waste management programmes were looked at.

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

No description available.

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.

No description available.

Thesis (M.S. - Hydrology and Water Resources)--University of Arizona, 1982. / Includes bibliographical references (leaf 52).

Thesis (Ph.D.)--Tufts University, 2000. / Submitted to the Dept. of Chemistry. Adviser: Albert Robbat, Jr. Includes bibliographical references. Access restricted to members of the Tufts University community. Also available via the World Wide Web;

Thesis (M. Sc.)--University of Hong Kong, 1996. / Includes bibliographical references (leaf 77-82).

The most important thermal, chemical, physical, and biological methods for treating hazardous wastes and the fate of their land-disposed residues are reviewed and evaluated. Technologies are described as major, minor, and emerging according to their stage of development or application to hazardous waste; major ones include rotary kiln, liquid injection, and cement kiln incineration; neutralization, chemical oxidation-reduction, and ion exchange; filtration, distillation and settling techniques; and activated sludge, aerated lagoon, and landfarming treatment. Emerging technologies include molten salt and fluidized- bed combustion, liquid-ion extraction and other processes, none of which are considered to be outside the realm of current or future economic feasibility. In addition, waste reduction strategies and the land burial of stabilized/solidified wastes are discussed. Residues from these technologies vary widely according to waste type and composition, but a common component in many of them is heavy metals, which, as elements, cannot be further degraded to other products. The results of the available literature suggests that these metals will be retained in clay liners beneath a landfill through the mechanism of cation exchange, with the adsorption of metals favored by their smaller hydrated size, lower heat of hydration, and in some cases, higher valences than the naturally occurring alkali earth metals. Other important factors include ionic activity, the pH and ionic strength of the solution, the presence of complexing agents, and the possible surface heterogeneity of the clay. In soils, metal binding through cation exchange with clay is augmented by adsorption onto iron and manganese oxides and complexing with organic matter such as humic acids. Many field studies with landfarmed metal-bearing wastes show that these mechanisms are usually sufficient to retain metals to within several inches of their zone of application. / M.S.