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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Evaluating the quality of EIA scoping reports associated with hazardous waste management activities in South Africa

Thorpe, Bradley Kevin 15 July 2014 (has links)
M.Sc. (Environmental Management) / The minimum requirements for environmental impact assessment (EIA) in South Africa are prescribed in the 2010 EIA Regulations under the National Environmental Management Act (Act No. 107 of 1998) [NEMA]; where EIA is used as a decision-support tool by competent authorities in evaluating the environmental authorisation applications of activities likely to have adverse environmental impacts. Regulations under the National Environmental Management: Waste Act (Act No. 59 of 2008) [NEM:WA] define the nature and thresholds of those waste management activities for which environmental authorisation, in the form of a waste management licence, is required. The aforementioned regulations make a distinction between Category A activities and Category B activities; where an application for authorisation for Category B activities needs to be supported by a comprehensive Scoping and EIA (SIA) process undertaken by an independent environmental assessment practitioner (EAP). With the exception of the disposal of general waste to land, Category B activities relate to hazardous waste storage, treatment, reuse, recycling, recovery and disposal. The above-mentioned SIA process is implemented in two distinct phases, the first of which is the scoping phase; which aims to identify the key potential impacts that could be realised from a development proposal and to set the terms of reference for the subsequent EIA phase. Scoping thus aims, inter alia, to ensure that the overall EIA is undertaken in an efficient and effective manner, with emphasis on identification of impacts of potential significance. By using a modified version of the South African adapted Lee and Colley (1992) Review Package, this dissertation presents the findings of an evaluation of the quality of hazardous waste-related Scoping Reports prepared in South Africa. A sample of 20 Scoping Reports was assessed using the aforementioned review package. The results indicated that 75% of Scoping Reports were undertaken satisfactorily in terms of overall quality. Conversely, 25% of these reports were deemed to be of an unsatisfactory quality, with 10% having been very poorly attempted and deficient in many material respects. This is concerning in respect of the sectoral focus (hazardous waste management) of this research; where by definition, owing to the inherent physical, chemical or toxicological characteristics, the handling of hazardous waste may have a significant detrimental impact on human health and the environment if managed inappropriately.
2

The study of Waste Management practices within households in Khakhanwa Village, Thulamela Municipality

Mabadahanye, Vhonani 18 May 2017 (has links)
MPH / Department of Public Health / The sanitary state of an area is largely influenced by waste handling practices of the residents and measures in place for safe waste evacuation and disposal. Despite strategies that the municipality and local communities have put in place; namely, collection of wastes in one central spot in some villages, littering of all types of wastes is still on the increase in many rural areas. The focus of this study was on common refuse generated at Khakhanwa Village, different waste management practices and the knowledge of villagers on the impact of poor refuse management. The study was carried out using the quantitative, descriptive methodology. A total population of 312 households participated. Data was collected using a structured questionnaire and ethical aspects were taken into consideration. Data was analysed descriptively using SPSS version 22.0. It is presented using graphs, tables and pie chart. The findings show that the respondents satisfactorily showed understanding of waste management and the impact of poor waste management. Due to lack of waste services, the majority of the residents resort to storing wastes within their homes, burning it and disposing of it in open dumping sites as major waste management practices. The most familiar wastes in Khakhanwa village are decomposable wastes, napkins and plastics. These findings call for strengthened waste services in rural areas and more waste education amongst all villagers. Policies on waste management need to be put in motion. Communities need to be equipped with the knowledge of reducing, reusing and recycling for the purpose of limiting wastes. Finally school curricula should be adjusted such that they inform learners about waste management from early ages.
3

Causes of near miss and minor operating incidents at selected chemical organisations in Durban and their impact on key functional areas

Nayager, Dan January 2015 (has links)
Submitted in fulfillment of the requirements for the degree of Doctor of Technology in Business Administration, Entrepreneurial Studies & Management Department, Durban University of Technology, Durban, South Africa, 2015.
4

A case study exploring the level of awareness of NCP Chlorchem's staff of environmental costs associated with hazardous waste

Tlhapane, Keatlaretse Kefilwe January 2014 (has links)
[Integrative executive summary] NCP Chlorchem (Pty) Ltd manufactures and distributes Chlor alkali products such as chlorine, hydrochloric acid, caustic soda flakes, etc. and in the process generates both hazardous and general waste. Following changes in South African waste management legislation in 2011, the organisation’s waste service provider had to increase the costs associated with the handling of site’s hazardous waste. Top management of NCP Chlorchem (Pty) Ltd requested a meeting with the waste service provider in order to establish the reasons behind the price increase. In that meeting, which the researcher attended, the waste service provider explained the changes in waste legislation and how it was going to impact on their business. Top management understood the reasons behind the price increase; however, they requested the waste service provider to review the price increase. The waste service provider gave the top management of NCP Chlorchem (Pty) Ltd assurance that they were going to discuss the price reduction request with their own senior management and would provide feedback. The researcher did not participate in the feedback meetings; however, to this day, NCP Chlorchem (Pty) Ltd still uses the services of the same waste service provider. The effect the escalating annual waste handling costs has had on NCP Chlorchem (Pty) Ltd’s management team led to the study. Environmental impacts have costs that directly impact on company’s bottom line, such as the costs associated with the generation of waste. Although environmental costs are only one of the many costs incurred by businesses, they deserve management’s attention. According to Jasch (2003), there is an apparent lack of awareness and understanding of the magnitude of the environmental costs generated by organisations, and many opportunities for cost savings through good environmental management are lost. However, using a relatively new tool in environmental management, that is, environmental management accounting (EMA), management would ensure that relevant and significant environmental costs are considered when making business decisions (Jasch, 2003). The main purpose of the thesis is to explore the level of awareness of environmental costs associated with hazardous waste within NCP Chlorchem (Pty) Ltd. In order to carry out the study, literature about environmental and cost accounting as well as literature on waste management was reviewed. Questionnaires were distributed to staff members, and meetings were held with different senior personnel. This case study seeks to answer the following questions: What is NCP Chlorchem (Pty) Ltd’s staff members’ level of understanding of waste management? What is the level of awareness of NCP Chlorchem (Pty) Ltd’s staff of environmental costs with regard to the generation, handling, transportation and disposal of hazardous waste? How can the current traditional accounting within the organisation be integrated with environmental management accounting? The findings of the first research objective revealed that staff members knew the site’s waste streams as per the South African legal definition of waste and as identified in the site’s environmental management system documentation. The conceptual approach to waste management is underpinned by the waste hierarchy. The respondents support the waste hierarchy in its approach to waste management, which is prevention of waste, reduction, reuse, recycle and safe disposal of waste as the last resort. Lack of awareness of environmental management, among other things, was cited as the cause of waste. In addition to that, the respondents believe the waste hierarchy can be achieved by employing recycling facilities, following procedures and by carrying out environmental awareness campaigns. Improving process design and control and including changes in raw material was cited, among other things, as the respondents’ perception on how waste can be reduced. The findings of the respondents’ understanding of waste hierarchy revealed that staff members understood waste management. The respondents cited the impacts of waste on the business as financial impact on the business, impact on their bonuses, and possible loss of business. In relation to the second research objective, it was found that staff members knew the hazardous waste streams and identified amongst other waste, sludge and chlorine emissions as NCP Chlorchem (Pty) Ltd’s hazardous waste. However, with regard to environmental management accounting data, an average of 55.1% of respondents were not familiar with the physical and monetary components of EMA. An average of 19.6% of respondents who were aware of EMA might have been senior personnel. It could further be established that those who were familiar with EMA information were actually working with the data, either for reporting purposes, or for employing waste minimisation strategies, as well as awareness purposes, to their juniors. On average, 80% of the respondents perceived the production department as the area within site that has the EMA information.
5

Interaction of gold mine taillings leachates with soil and geochemical partitioning of toxic metal species

Ngoetjane, Pitsi Christopher 02 February 2016 (has links)
Department of Ecology and Resource Management / MENVSC
6

Management of medical waste by professional nurses at three selected hospitals in Thulamela Municipality, Vhembe District, Limpopo Province, South Africa

Netshifhefhe, Nditsheni Mavis 18 September 2017 (has links)
MPH / Department of Public Health / See the attached abstract below
7

An evaluation of strategic management of landfill sites: A case study of Thohoyandou Block J. landfill site, Vhembe District Municipality, Limpopo Province

Nefale, Anza 18 May 2018 (has links)
MENVSC / Department of Ecology and Resource Management / The purpose of this study was to evaluate the strategic management of the Thohoyandou Block J landfill site. There are limited documented materials on strategic management of landfill sites in South Africa. As a result, this study sought to close this gap and expose new insights that it deemed to be of great importance in the management and operations of landfill sites. The capacity of a TBJ landfill site in terms of its efficiency in disposing waste, adherence to rules and procedures and the overall management of the site are the key areas of this study. The dominant types and sources of solid waste disposed at the TBJ landfill site, efficiency and effectiveness of operation of TBJ landfill site and operational challenges are the main areas covered in this study. The study adopted the mixed methods approach, involving both qualitative and quantitative research methods. Both primary and secondary data were acquired. Primary data were obtained through a questionnaire, an interview and field observation, using an observation checklist. Secondary data were obtained from ArcGIS Desktop Help 9.2 and documented materials from the Thulamela Local Municipality and the TBJ landfill site, the Integrated Waste Management Plan, Integrated Development Plan, TBJ landfill site’s monthly report, audit report and landfill site’s operating plan. Basically, field observation and a questionnaire completed by the waste manager, landfill operator and supervisor, were used to collect data on the operational challenges of TBJ landfill site and to obtain data on the efficiency and effectiveness at which the TBJ landfill site is operating. Waste pickers were interviewed and field observation was undertaken, to identify the dominant types and sources of waste disposed at the TBJ landfill site. A questionnaire completed by TBJ landfill operator, ArcGIS Desktop Help 9.2 for field measurement, reports of the amount of waste recorded and the municipality’s database, were utilized to elicit data regarding the determination of the capacity of TBJ landfill site. The results obtained revealed that the TBJ landfill site’s remaining capacity is 317 085 m3, which will be exhausted in the next 4 years. Plastics were found to be the dominant waste disposed at the TBJ landfill site, at 40%, followed by card-boxes, which constituted 32%. The dominant sources of solid waste generation in the TBJ landfill site were households, at 51%, followed by commercial, at 31% and industrial, at 11%. The absence of a weighbridge, to weigh loads of waste, frequent break down of equipment, lack of equipment required to operate the TBJ landfill site efficiently and the presence of fire hazards, were some of the / NRF
8

Development of Intervention Strategies for Management of Medical Waste in Vhembe District, South Africa

Olaniyi, Foluke Comfort 07 1900 (has links)
PhD (Public Health) / Department of Public Health / Medical waste is a special type of hazardous waste generated from healthcare facilities. Mismanagement of this waste has a negative impact on healthcare workers, patients and their relatives, medical waste handlers and the community. South Africa, like many other developing countries, is resource-constrained in the management of medical waste and poor practices have been reported across the country, especially in the urban health facilities that have received more attention from researchers. This study was conducted to explore the practices and challenges of medical waste management in Vhembe District, a largely rural district in Limpopo province and develop intervention strategies for better management of the waste in the District. A convergent parallel approach of mixed method design was adopted to achieve the objectives of this study. The target population included the main stakeholders of medical waste management in the district: the Department of Health, healthcare facilities and the waste management company responsible for the treatment and disposal of medical waste in Limpopo Province. The study population from the Department of Health included representatives from the medical waste management section while the waste management company was represented by the manager of the company in Limpopo Province. The samples for the healthcare facilities were drawn from fifteen randomly selected healthcare facilities in the district and included the administrative heads, medical waste generators and medical waste handlers. The study was conducted in three phases. Phase 1 was a qualitative study during which the administrative heads of the selected healthcare facilities, personnel directly involved in medical waste management at the healthcare facilities as well as the representatives from the Department of Health and waste management company were engaged in in-depth interviews. This phase also involved voice recording, observations, field documentation and taking of relevant pictures. Thematic content analysis was used to analyze the data obtained. During phase 2 (quantitative study), a semi-structured questionnaire was employed for data collection from medical waste generators and handlers at the healthcare facilities. A total of 229 questionnaires were retrieved from the participants and were analyzed with the Statistical Package for Social Sciences version 25.0. Descriptive statistical analyses were performed; Chi-square and Cramer’s V tests were used to determine the associations between dependent and independent variables, as well as the strength of association where significant relationships exist. Statistical significant level was set at p<0.05 and the results are presented in tables and graphs. The results from both phases were interpreted and discussed simultaneously. Respondents and participants were assured of anonymity of their identities and confidentiality of the information they provided. They were given adequate information about the study and only those who volunteered participated in the study after appending their signatures on the informed consent form. In phase 3, the Medical Research Council Framework was used to develop intervention strategies for improved medical waste management in Vhembe District based on the Strength, Weakness, Opportunity and Threat (SWOT) and Political, Economic, Social, Technological, Environmental and Legal (PESTEL) analysis techniques. The study revealed inefficient practices of medical waste management in all the healthcare facilities. Rate of medical waste generation was 338.15kg/day, 19.2kg/day and 15.5kg/day of HCRW from the hospitals, community health centers and clinics respectively. Segregation practices were poor, and only 28.4% of respondents rated their healthcare institutions as being excellent with medical waste segregation. The type of occupation was found to be significantly associated with exposure to training (p=0.000) and the level of knowledge about medical waste management (p=0.000). Also, the use of personal protective equipment was found to be significantly associated with training (p=0.011). Transportation and temporary storage were not done according to the recommendation in the guidelines and incineration was the main means of treatment of the waste. The final product of waste treatment is being disposed into an hazardous waste landfill. The challenges encountered in the process of managing medical waste include lack of adequate funding and budget for medical waste management, ineffective and irregular training of healthcare workers, non-compliance to medical waste management guidelines, insufficient bins, substandard central storage rooms, insufficient personal protective equipment and unavailability of Hepatitis B vaccine. The strength, weakness, opportunities and threats of medical waste management in Vhembe District were analyzed and specific intervention strategies were developed to improve on the strength, minimize the weakness, take advantage of the opportunity and combat the threats. The developed strategies were validated. This study provides the evidences of poor management of medical waste in Vhembe District, and shows the need for urgent intervention measures to be put in place. We therefore recommend that the intervention strategies proposed here be evaluated and implemented to mitigate the untoward effects of poor medical waste management among healthcare workers and the community as a whole. / NRF
9

The quantification of medical waste from the point of generation to the point of disposal: case studies at three private hospitals in Pretoria

Heunis, Louis Barend 11 1900 (has links)
The South African Waste Information System (SAWIS) was developed by the Department of Environmental Affairs and Tourism (DEAT) in 2005. This is a system used by government and industry to capture routine data on the tonnages of waste generated, recycled and disposed of in South Africa on a monthly and annual basis. All waste producers and waste management organisations should contribute to this national waste database and should accurately monitor the types and quantities of waste produced and handled. According to DEAT (2006) the need for Data verification is important. DEAT (2006:59) defined the term Data Verification as: "assessing data accuracy, completeness, consistency, availability and internal control practices that serve to determine the overall reliability of the data collected." The aim of the study is to determine a procedure, as well as the nature and extent of internal and external source documents, which could be used in the reconciliation of medical waste quantities from generation to disposal. The key objectives are to determine whether the selected hospitals keep internal records of the quantities of medical waste generated; to reconcile the waste quantities on the internal records with the external records, such as the collection certificates, invoices and waste incineration certificates; to ascertain whether the quantity of medical waste generated is equal to the quantity of waste incinerated and disposed of to determine the ratio factor between the quantity of medical waste before incineration and the quantity of the residue (ashes) after incineration, and to make recommendations on the reconciliation of waste quantities from the point of generation to the point of disposal. The results of the study indicate that the destruction certificate is the proof that the waste that was on-site collected by the service provider has been disposed /treated. Especially as an internal control measure. The health care risk waste (HCRW) management record keeping of quantities of weight as per Hospital A, Hospital B and Hospital C allows the opportunity to analyse the weight per month and per Hospital and per category and to make comparisons. The weakness or the gap however still exist that the waste is not weighed at the point of origin, but at the point where the waste service provider collects the waste onsite. It is from this point onwards that the service level agreement between the hospital and the waste service provider and the document management system and the tracking receipt and the waste collection documents (WCD) becomes relevant and where the quantities of waste per category are for the first time recorded. The hypothesis as stated in Chapter 1 was proven valid. The study concludes that reconciliation and comparison between the collection certificate and the destruction certificate and the monthly invoice is therefore possible, but the risk of mixing of waste and the understating or overstating of waste quantities is still not overcome. / Environmental Sciences / M. Sc. (Environmental management)
10

Potential to grow informal waste recycling in semi-urban areas: case of the P.E.A.C.E. recycling buyback centre in Senwabarwana, Limpopo

Chisango, Eliot Tichaona 02 1900 (has links)
This research aimed to investigate an area of research that has largely been overlooked in the past, that is, the efficiency, profitability and sustainability of informal waste recycling in semi-urban areas. In exploring the research topic, a recycling buyback centre was used as a case study. The centre facilitates collection, sorting and selling of waste and is located in Senwabarwana, Northern Limpopo Province. Here the P.E.A.C.E (Planning, Education, Agriculture, Cooperatives and Environment) Foundation, an organisation looking at rural poverty alleviation in South Africa, initiated a flagship recycling buyback centre as a community project. This research picks up on prior research that was conducted on a similar project initiated by the same organisation in Ndumo, KwaZulu Natal. Even though the location is different from KwaZulu Natal, both Senwabarwana and Ndumo are faced with similar challenges affecting social, economic and environmental circumstances. Five objectives were identified to provide structure to this research. Through action research, the study assessed the sustainability of this recycling buyback centre with regard to the impact on social, economic and environmental factors within Senwabarwana. It also covered problems experienced in rolling out waste management initiatives within the semi-urban study location and assessed the municipal framework with regard to waste and how waste is managed and recycled. Furthermore, analyses of the waste data generated at the recycling centre was examined that culminated in offering solutions to the identified problems. Recommendations for acceptable practices in semi-urban waste management are made to enable further research and potentially up-scaling the project for application in other geographic areas. The study reports both qualitative and quantitative data collected through the investigation of the case study in the start-up phase. The data gathering was done through administering questionnaires to waste pickers associated with the case study centre. Telephonic and face-to-face interviews and secondary data were interchangeably used to address each of the five objectives. The results from the data gathered show that, if properly coordinated and structured, informal waste recycling in semi-urban communities is possible and can contribute positively to the socio-economic and environmental development of these areas. It is envisaged that this study would contribute to the body of knowledge already in existence, whilst also creating an opportunity for further academic research and input within this field to enable the scaling-up of such initiatives. / Environmental Sciences / M. Sc. (Environmental Science)

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