A comparison of waste lubricating oil treatment techniques
- Authors: Diphare, Motshumi J. , Muzenda, Edison , Pilusa, Tsietsi J. , Mollagee, Mansoor
- Date: 2013
- Subjects: Waste oil , Waste management , Waste lubricating oil
- Type: Article
- Identifier: http://ujcontent.uj.ac.za8080/10210/364727 , uj:4967 , http://hdl.handle.net/10210/13068
- Description: Waste lubricating oil is a resource that cannot be disposed of randomly due to the presence of pollutants. In response to economic problems and environmental protection, there is a growing trend to regenerate and reuse waste lubricants [1]. The recovery techniques discussed in this paper are reprocessing, rerefining and incineration of waste lubricating oil. The major objective of this paper is to analyze and compare the regenerative technologies, thus creating the foundation for government, the private sector and other stakeholders in policy formation and selection of recovery techniques.
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A review of waste lubricating grease management
- Authors: Diphare, Motshumi J. , Pilusa, Jefrey , Muzenda, Edison , Mollagee, Mansoor
- Date: 2014
- Subjects: Waste lubricating grease , Waste management
- Type: Article
- Identifier: uj:4930 , http://hdl.handle.net/10210/13030
- Description: This paper reviews the handling, disposal, treatment of waste lubricating grease as well as its environmental impact. Lubricants require careful disposal as they contain pollutants. In response to economic considerations and environmental protection, there is a growing trend of regeneration and reuse of waste lubricants. Accordingly, this work provides an overview on various ways of handling, disposal, treatment of waste grease and its associated environmental impacts. In addition to the fact that petroleum and crude oil are not inexhaustible resources, waste products from these resources present a hazard to human health and the environment. As such, proper management of waste lubricants is necessary to prevent the adverse environmental impacts. Efficient recycling of waste lubricants could help reduce environmental pollution.
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Cleaner production to optimize resource consumption and reduce effluent waste in a beverage plant
- Authors: Madanhire, Ignatio , Mbohwa, Charles
- Date: 2016
- Subjects: Waste management , Cleaner production
- Language: English
- Type: Conference proceedings
- Identifier: http://hdl.handle.net/10210/55299 , uj:16276 , Citation: Madanhire, I. & Mbohwa, C. 2016. Cleaner production to optimize resource consumption and reduce effluent waste in a beverage plant. 2016 Industrial Engineering and Operations Management, Kuala Lumpur:2382-2389 , ISBN:978-1-4673-7762-1
- Description: Abstract: The study investigated the Cleaner Production (CP) concept in reducing waste generation, operating costs as well as resource consumption in a beverage manufacturing plant. CP assessments were done on respective key processes in the plant to optimize input resource and minimize waste at source. A number of implementable options were recommended for them to be effected in the beverage plant to improve on the cost effectiveness of the plan, and for environmental friendly complying operations.
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Enhancing cleaner production practices in downstream petroleum lubricants industry
- Authors: Madanhire, Ignatio , Mbohwa, Charles
- Date: 2013
- Subjects: Cleaner production , Waste management , Downstream Petroleum Lubricants Industry , Lubricants - Environmental aspects
- Type: Article
- Identifier: uj:4862 , http://hdl.handle.net/10210/12538
- Description: This work highlights Cleaner Production (CP) opportunities available in Downstream Petroleum Lubricants Industry with view to reduce negative environmental impacts of lubricants throughout the value chain. Effort was made to investigate existing cleaner production practices by manufacturers and users. Options were generated to improve on the current practices. Base oil substitution, minimizing oil losses during and after manufacturing, raw material and energy consumption reduction, and environmentally friendly used oil disposal were considered for effectiveness.
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The cost of quality : elements of lean production in foundries
- Authors: Bhero, Shepherd , Dlamini, Menzie
- Date: 2015-07-14
- Subjects: Lean manufacturing , Foundries , Cleaner production , Waste management
- Type: Article
- Identifier: uj:5214 , ISBN 9789384468170 , http://hdl.handle.net/10210/14498
- Description: Inefficiencies in the process chain result in bloated operational costs and ostensibly pass on to the customer. It is essential to streamline process costs and categorise them appropriately as either costs of conformance or cost of non-conformance. In this way, hidden costs due to inefficiencies in the system can be identified. A sustained continuous improvement programme to systematically eliminate waste can be employed to achieve lean manufacturing or “cleaner production”. A number of factors contribute to costs in a foundry from procurement of scrap to the delivery of a casting.
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The effect of legislation on informal waste salvaging and salvagers on official landfill site : the case study of Weltevreden (Polokwane)
- Authors: Thaba, Makgafela Richard
- Date: 2012-08-01
- Subjects: Waste management , Salvage (Waste, etc.) , Weltevreden (Polokwane, South Africa) , Refuse and refuse disposal
- Type: Thesis
- Identifier: uj:8914 , http://hdl.handle.net/10210/5385
- Description: M.A. , In present-day society, solid waste can no longer be treated as a non-valuable resource. Municipal waste produced from residential and commercial sources has become an economic resource for the poor on landfill sites. Urban poor, rural-urban migrants and urban-urban migrants are the ultimate symbol of the informal economy on landfill sites. These migrants have identified waste as an economic resource to extract a livelihood. In their presence on landfill sites, South Africa has introduced waste management policies which endorse the notion of sustainable development. Sustainable development is the notion through which South Africa shapes and parallels its environmental directive to avoid destruction and depletion of natural resources. Sustainable development is a theoretical framework adopted by this study to evaluate the effect of legislation on informal waste salvagers and waste salvaging. Waste salvaging is often frowned upon and neglected by local municipal authorities who are constitutionally mandated to ensure preservation of natural resources. Amongst other things, local municipalities need to recreate economic opportunities and curb the unemployment rate. Furthermore, South African municipalities deliberated during the tabling of the Polokwane Declaration to reduce waste disposal by 50% in 2012 through waste recycling and waste minimisation. In the absence of employment opportunities, local municipalities in South Africa are continually faced with the dilemma of incorporating informal waste salvaging into their waste management directives. This study uses Weltevreden landfill site in Polokwane as a case study to evaluate the effects of legislation on informal waste salvaging. A waste management and sustainability framework towards career waste salvagers was developed as a paradigm to incorporate elements of sustainable livelihood approach. The framework allowed the study to comprehend the synergy and the discords that waste management directives in South Africa unravel on informal waste salvaging. Furthermore, this led to the procreation of a model to unlock the economic potential of waste in South African municipalities. The model recognises the elements of waste management directives such as National Environmental Management Act, 1998 (Act No.107 of 1998) and National Environmental Management: Waste Act, 2008 (Act No. 59 of 2008). Despite that, the model resonates on the promulgations made in the Waste Act, 2008 (Act No. 59 of 2008) on informal waste salvaging. This study intends to evaluate the extent to which contemporary waste management directives in South Africa support waste salvaging within the three pillars of sustainable development, namely economic, social and environmental. However, this research hypothesises that waste management directives in South Africa fail to support the three pillars of sustainable development. In light of the hypothesis, this research has identified waste salvagers, waste Thaba Makgafela Richard iii management officials and the public as instrumental respondents to evaluate perceptions and challenges linked to the informal waste economy. A desktop review of available regulatory instruments informed recommendations and the model procreated in this study. The key lessons are highlighted and followed in Chapter 7 which provides analytical conclusions and recommendations for all the chapters.
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The management of South African landfills and waste pickers on them : impacting lives and livelihoods
- Authors: Schenck, Catherina J. , Blaauw, Phillip F. , Swart, Elizabeth C. , Viljoen, Jacoba M.M. , Mudavanhu, Naome
- Date: 2019
- Subjects: Landfill waste pickers , Landfills , Waste management
- Language: English
- Type: Article
- Identifier: http://hdl.handle.net/10210/289167 , uj:31370 , Citation: Catherina J Schenck, Phillip F Blaauw, Elizabeth C Swart, Jacoba M M Viljoen & Naome Mudavanhu (2019) The management of South Africa’s landfills and waste pickers on them: Impacting lives and livelihoods, Development Southern Africa, 36:1, 80-98, DOI: 10.1080/0376835X.2018.1483822
- Description: Abstract: Effective management of waste and the promotion and management of recycling activities are necessary for sustainable and liveable cities. A key but unrecognised element in promoting recycling is the efforts of waste pickers who make a living from recycling mainline recyclables. This article aims to describe the approaches used on ten landfills in South Africa to manage waste pickers’ access to recyclables and their daily activities on the landfills. A multiple case study design and cross-case analysis were used in this study. The sustainable livelihoods framework (SLF) was used to analyse and explain the data. The results showed that waste management policies and practices directly influence the waste pickers’ access to recyclable waste and their livelihoods. Finally, some inclusionary and exclusionary practices are highlighted that could guide inclusive, participatory and co-productive practices for waste pickers in South Africa towards increased recognition, access, dignity and income.
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Waste control and management system in Polokwane Capricorn municipality district of South Africa
- Authors: Mewomo, Modupe Cecilia , Aigbavboa, Clinton Ohis , Maja, Molebogeng Rozyne
- Date: 2017
- Subjects: Construction waste , Waste control , Waste management
- Language: English
- Type: Conference proceedings
- Identifier: http://hdl.handle.net/10210/245973 , uj:25489 , Citation: Mewomo, M.C., Aigbavboa, C.O. & Maja, M.R. 2017. Waste control and management system in Polokwane Capricorn municipality district of South Africa.
- Description: Abstract: The management of waste generated from the construction activities is a critical issue requiring serious and adequate attention. Construction waste constitutes nuisance to the construction environment and could lead to negative public impression of the construction industry as well as poor project performance, if not properly managed. Thus, this paper investigates the measures that can be taken for effective management of construction waste in the Polokwane municipality of South Africa. Data were collected using a questionnaire design. The targeted respondents were the contractors who are involve in various types of construction activities in Polokwane. Based on factors identified from the review of literature, the respondents were asked to rate the methods and measures that can be adopted for the effective control of construction waste in Polokwane...
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