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The sustainable school: A sustainability assessment questionnaire for high schoolsJacquot, Curtis Willard 01 January 2003 (has links)
The result of this project is a sustainability assessment questionnaire for the high school setting. The questionnaire fills a gap in the literature pertaining to assessing direct and indirect environmental impacts on high schools.
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A best practice framework in reverse logisticsBadenhorst, Amanda 10 July 2013 (has links)
Reverse logistics is an important process that is often misunderstood. Reverse logistics can cause considerable cost, but provide numerous opportunities. Many organisations do not understand the correct processes and procedures to follow and how to manage reverse logistics efficiently. The focus of this study was on best practices in reverse logistics. A best practice framework was developed to help organisations overcome problems and manage their reverse logistics more efficiently. This study adopted a mixed method research approach with both qualitative and quantitative elements. A comprehensive literature study was conducted to develop a conceptual best practice framework in reverse logistics and a survey was conducted to seek inputs from industry in South Africa to refine the framework into a workable instrument in practice. The study concluded that the best practices identified in literature have proven to be important in practice, and applying such practices will enable organisations to manage their reverse logistics more efficiently. / Business Management / M. Com. (Logistics)
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A review of solid waste management practices in Polokwane CityMaluleke, Prudence Hlamarisa 08 May 2014 (has links)
Bibliographical refernces appear at the end of each chapter / This study reviews solid waste management practices in Polokwane City. The study area covered some of the residential areas in Polokwane City; namely; Ivy Park, Fauna Park, Welgelegen, Westernburg and the City Centre. This article describes two main methods that were used to collect data; that is Qualitative and Quantitative method. Field survey was also made to validate data obtained from the participants that were interviewed during qualitative data process. After framing the problem, the objectives of Solid Waste Management Practices in Polokwane City were briefly outlined as follows:
• Assess solid waste management practices in Polokwane City.
• Make comparison on how households and the municipality take responsibility in storing, collecting, transporting, treating and disposing solid waste.
• Investigate what problems the City encounters in managing solid waste.
• Make relevant recommendations aimed at improving solid waste management practices within the City.
The service management was administered by the municipality and private sector. From the five study residential areas, the Municipality manages waste in the City Centre while the private sector manages waste in the other residential areas. However, the City continues to play an administrative role over the contracted service provider.
Statistical results were presented in figures and tables. The results showed the storage habits, frequency of collection, mode of transport and methods of disposal for solid waste in Polokwane City.
The only method of disposal in the city was found to be landfilling. Activities that took place at the landfill site, such as reclaiming were outlined together with the economic values that these activities add to the City. The study also revealed that as population increases, the amount of solid waste generated also increased. / Environmental Sciences / M. Sc. (Environmental Management)
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A review of solid waste management practices in Polokwane CityMaluleke, Prudence Hlamarisa 08 May 2014 (has links)
Bibliographical refernces appear at the end of each chapter / This study reviews solid waste management practices in Polokwane City. The study area covered some of the residential areas in Polokwane City; namely; Ivy Park, Fauna Park, Welgelegen, Westernburg and the City Centre. This article describes two main methods that were used to collect data; that is Qualitative and Quantitative method. Field survey was also made to validate data obtained from the participants that were interviewed during qualitative data process. After framing the problem, the objectives of Solid Waste Management Practices in Polokwane City were briefly outlined as follows:
• Assess solid waste management practices in Polokwane City.
• Make comparison on how households and the municipality take responsibility in storing, collecting, transporting, treating and disposing solid waste.
• Investigate what problems the City encounters in managing solid waste.
• Make relevant recommendations aimed at improving solid waste management practices within the City.
The service management was administered by the municipality and private sector. From the five study residential areas, the Municipality manages waste in the City Centre while the private sector manages waste in the other residential areas. However, the City continues to play an administrative role over the contracted service provider.
Statistical results were presented in figures and tables. The results showed the storage habits, frequency of collection, mode of transport and methods of disposal for solid waste in Polokwane City.
The only method of disposal in the city was found to be landfilling. Activities that took place at the landfill site, such as reclaiming were outlined together with the economic values that these activities add to the City. The study also revealed that as population increases, the amount of solid waste generated also increased. / Environmental Sciences / M. Sc. (Environmental Management)
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Investigation into the technical feasibility of biological treatment of precious metal refining wastewaterMoore, Bronwyn Ann January 2013 (has links)
The hydrometallurgical refining of platinum group metals results in large volumes of liquid waste that requires suitable treatment before any disposal can be contemplated. The wastewater streams are characterized by extremes of pH, high inorganic ion content (such as chloride), significant residual metal loads and small amounts of entrained organic compounds. Historically these effluents were housed in evaporation reservoirs, however lack of space and growing water demands have led Anglo Platinum to consider treatment of these effluents. The aim of this study was to investigate whether biological wastewater treatment could produce water suitable for onsite reuse. Bench-scale activated sludge and anaerobic digestion for co-treatment of an acidic refinery waste stream with domestic wastewater were used to give preliminary data. Activated sludge showed better water treatment at lab scale in terms of removal efficiencies of ammonia (approximately 25%, cf. 20% in anaerobic digestion) and COD (70% cf. 43% in digestion) and greater robustness when biomass health was compared. Activated sludge was consequently selected for a pilot plant trial. The pilot plant was operated on-site and performed comparably with the bench-scale system, however challenges in the clarifier design led to losses of biomass and poor effluent quality (suspended solids washout). The pilot plant was unable to alter the pH of the feed, but a two week maturation period resulted in the pH increasing from 5.3 to 7.0. Tests on algal treatment as an alternative or follow-on unit operation to activated sludge showed it not to be a viable process. The activated sludge effluent was assessed for onsite reuse in flotation and it was found that there was no significant difference between its flotation performance and that of the process water currently used, indicating the effluent generated by the biological treatment system can be used successfully for flotation. Flotation is the method whereby minerals refining operations recover minerals of interest from ore through the addition of chemicals and aeration of the ore slurry. Target minerals adhere to the bubbles and can be removed from the process.
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A best practice framework in reverse logisticsBadenhorst, Amanda 02 1900 (has links)
Reverse logistics is an important process that is often misunderstood. Reverse logistics can cause considerable cost, but provide numerous opportunities. Many organisations do not understand the correct processes and procedures to follow and how to manage reverse logistics efficiently. The focus of this study was on best practices in reverse logistics. A best practice framework was developed to help organisations overcome problems and manage their reverse logistics more efficiently. This study adopted a mixed method research approach with both qualitative and quantitative elements. A comprehensive literature study was conducted to develop a conceptual best practice framework in reverse logistics and a survey was conducted to seek inputs from industry in South Africa to refine the framework into a workable instrument in practice. The study concluded that the best practices identified in literature have proven to be important in practice, and applying such practices will enable organisations to manage their reverse logistics more efficiently. / Business Management / M. Com. (Logistics)
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Environmental risk assessment associated with unregulated landfills in the Albert Luthuli Municipality, Mpumalanga Province, RSAMnisi, Fannie 31 August 2008 (has links)
Integrated management of municipal and hazardous waste is one of the challenges facing the new
municipalities in South Africa, especially those located in previously disadvantaged rural areas.
However, much of the research on solid and hazardous waste management in South Africa has
examined waste management problematics in urban areas, the majority of which are located within
the jurisdiction of local governments which are comparatively effective in terms of providing
adequate disposal services. By contrast, this study has examined the environmental risk
assessment associated with unregulated landfill sites in the Albert Luthuli municipality, in the
Mpumalanga province. The determination of the environmental risk was achieved by the use of
questionnaire surveys and landfill analysis forms in selected study areas.
The findings have highlighted a very high environmental risk, nearly four times and above, the
threshold limits set by the Department of Environmental Affairs and Tourism (DEAT, 2005:15) for
all of the landfill sites examined. Several exposure pathways stemming from associated
environmental impacts have also been identified for the study. The higher environmental risk
determined for the problem sites is ascribed to numerous factors, including their ill-planned
location, the sensitivity and vulnerability of the natural environment and adjacent rural settlements,
the lack of appropriate waste pre-treatment processes prior to disposal, and most significantly, the
lack of regulatory and control measures to contain the myriad of environmental problems
generated. In conclusion, it is recommended that several measures (including closure) should be
taken in order to reduce and contain the magnitude of environmental risks involved. / Environmental Sciences / M.Sc.(Environmental Sciences)
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Environmental risk assessment associated with unregulated landfills in the Albert Luthuli Municipality, Mpumalanga Province, RSAMnisi, Fannie 31 August 2008 (has links)
Integrated management of municipal and hazardous waste is one of the challenges facing the new
municipalities in South Africa, especially those located in previously disadvantaged rural areas.
However, much of the research on solid and hazardous waste management in South Africa has
examined waste management problematics in urban areas, the majority of which are located within
the jurisdiction of local governments which are comparatively effective in terms of providing
adequate disposal services. By contrast, this study has examined the environmental risk
assessment associated with unregulated landfill sites in the Albert Luthuli municipality, in the
Mpumalanga province. The determination of the environmental risk was achieved by the use of
questionnaire surveys and landfill analysis forms in selected study areas.
The findings have highlighted a very high environmental risk, nearly four times and above, the
threshold limits set by the Department of Environmental Affairs and Tourism (DEAT, 2005:15) for
all of the landfill sites examined. Several exposure pathways stemming from associated
environmental impacts have also been identified for the study. The higher environmental risk
determined for the problem sites is ascribed to numerous factors, including their ill-planned
location, the sensitivity and vulnerability of the natural environment and adjacent rural settlements,
the lack of appropriate waste pre-treatment processes prior to disposal, and most significantly, the
lack of regulatory and control measures to contain the myriad of environmental problems
generated. In conclusion, it is recommended that several measures (including closure) should be
taken in order to reduce and contain the magnitude of environmental risks involved. / Environmental Sciences / M.Sc.(Environmental Sciences)
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