OpenUCT Home
→
Browsing by Author

Browsing by Author "von Blottnitz, Harro"

Now showing items 1-14 of 14

An exploration of lived experiences of 11 resettled families in Mazabuka district, Zambia, by a Nickel mine project

Author: Tumbama, Lewis Date: 2019 Mining-induced displacements and resettlements are a global phenomenon. However, how these are done and the implications that they have on the displaced and resettled are shaped by micro, local level dynamics. These include existing regulations, ... Read more
An investigation of the potential and the limitations of small-scale biogas in urban Africa

Author: Naik, Linus Date: 2019 Continuing urbanisation in Sub-Saharan Africa provides many development challenges including; energy provision, waste management and sanitation. On-site biogas has the potential to provide renewable energy to meet primary energy needs, whilst ... Read more
An update on the process economics of biogas in South Africa based on observations from recent Installations

Author: Nagel, Brigette Mariana Date: 2019 This dissertation investigates, in the context of South Africa (SA), the process economics of energy from biogas, and hence the financial viability establishing a biogas plant in the absence of a formal incentivisation programme. Firstly, the ... Read more
Biofuel policies in South Africa: a critical analysis

Author: Letete, Thapelo ; von Blottnitz, Harro Date: 2012 In 2007 the South African government released the country’s National Biofuels Industrial Strategy targeting a biofuels market penetration of 2% of liquid road transport fuels by 2013. Contrary to the international situation, the main driver ... Read more
Carbon intensive but decarbonising quickly? Retrospective and prospective life cycle assessments of South African pome fruit

Author: de Kock, Lorren Date: 2018 The South African economy has in the past been categorised as carbon intensive due to an energy and capital intensive development path and an associated set of economic activities termed the minerals-energy complex. International export ... Read more
End-of-life in South African product life cycle assessment

Author: Rodseth, Clare Josephine Date: 2018 Life cycle assessment (LCA) is a tool specifically developed for quantifying and assessing the environmental burden of a product across its entire life cycle, thus providing powerful support for sustainable product design. There exists a ... Read more
How the sustainability transition in energy is transforming the built environment of South African cities

Author: Kluger, Martin Date: 2019 South Africa is undergoing a sustainability transition (ST) in its energy sector as part of its broader move towards a lowcarbon future. Past studies of the nascent ST using a multi-level approach have already proven obsolete after strong ... Read more
Inclusion of leakage into life cycle management of products involving plastic as a material choice

Author: Chitaka, Takunda Yeukai Date: 2020 The accumulation of plastic waste in the natural environment has been a major environmental concern for many decades. However, the environmental impacts associated with leakage are not taken into consideration under current life-cycle based ... Read more
Introducing loop-closure for phosphates into a provincial development strategy: An analysis of overlaps of primary and secondary phosphate processing technologies

Author: Vidima, Sizwe Date: 2018 Almost 90% of the global phosphoric acid demand can primarily be linked to fertiliser production for application onto agricultural lands (PotashCorp, 2014). To fulfil the phosphate fertiliser demand in South Africa’s arable soils, the country ... Read more
Investigation of the applicability of a cleaner production approach to road side catering in urban Africa

Author: Niyobuhungiro, Rissa Vénérande Date: 2018 In urban Africa, informal street food trade is often accompanied by processing activities, including slaughtering, brewing, grilling or cooking. Food and drinks are often prepared on open fires using wood as a fuel. When wood is used as a ... Read more
Life cycle sustainability assessment of next generation energy infrastructure in Africa: Is there a case for biohydrogen after biomethane?

Author: Masilela, Phumlani Date: 2018 The recovery of energy in the form of biomethane gas from inexpensive biodegradable organic wastes is starting to become a cornerstone of green economy investments. It is possible that such installations could serve as a precursor for the ... Read more
Resource intensity trends of ferrochrome production in South Africa

Author: Dlamini, Reuben Mkhuleko Date: 2020 South Africa owns more than 70% of the world's known chromite reserves. Chromite has historically been the most feasible source of chromium suitable for ferrochrome production, which in turn is an essential raw material for stainless steel ... Read more
Stakeholder collaboration and learning during the concept design phase of an urban biogas project

Author: Melamu, Rethabile ; Boyd, Anya ; Wlokas, Holle L ; Roden, Brett C ; Austin, Greg ; von Blottnitz, Harro Date: 2010 Anaerobic digestion (AD) of organic matter to produce biogas is a waste management option for waste streams high in organic matter which are unsuitable for thermal treatment. In Africa, the implementation of this technology is slow compared ... Read more c b
The TCLP and its applicability for the characterization of worst case leaching of wastes from Mining and Metallurgical operations

Author: Cohen, Brett ; Lewis, Alison ; Petersen, Jochen ; von Blottnitz, Harro ; Drews, S C ; Mahote, S I Date: 1999 Laboratory batch extraction tests, such as the Toxicity Characteristic Leaching Procedure (TCLP), are widely used to classify industrial solid wastes destined for disposal in landfills. Whilst the ease and speed of such tests makes their use ... Read more