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Date: 2017
Language: English
Type: Article
Identifier: http://hdl.handle.net/10210/251795
Description: Abstract: Sediment contamination may occur from various anthropogenic activities, such as mining-, agricultural- and industrial practices. Many of the contaminants arising from these activities enter ... More
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Date: 2016
Language: English
Type: Article
Identifier: http://hdl.handle.net/10210/212627
Description: Abstract: The issues of acid mine drainage (AMD) from mining activities is not a new phenomenon to the present day developing South Africa as well as in most developed countries around the globe. Howe ... More
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Date: 2016
Language: English
Type: Article
Identifier: http://hdl.handle.net/10210/214013
Description: Abstract: In this paper, microanalytical investigation was conducted on disintegrated field concrete that had been used to construct a weir within a coal mine in South Africa. The concrete was in cont ... More
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Date: 2015-04-19
Type: Thesis
Identifier: uj:5108
Description: Desilicated fly ash (DFA), the residue from leaching of silica from fly ash, was used as an adsorbent for metals from acid mine drainage (AMD). DFA was found to be an impure phillipsite K zeolite. Bat ... More
Date: 2015
Language: English
Type: Masters (Thesis)
Identifier: http://hdl.handle.net/10210/16540
Description: MSc. (Nanoscience)
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Authors: Moreroa, Mabatho
Contributor: Ntuli, F., Prof.
Date: 2015
Language: English
Type: Masters (Thesis)
Identifier: http://hdl.handle.net/10210/212962
Description: Abstract: Attapulgite and Mozambican bentonite (MB) were modified by using barium chloride and ammonium cations such as hexadecyltrimethylammonium bromide (HDTMA) and trimethyldecylammonium bromide (T ... More
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Contributor: Connell, S.H., Prof.
Date: 2015
Language: English
Type: Masters (Thesis)
Identifier: http://hdl.handle.net/10210/58831
Description: Abstract: Please refer to full text to view abstract
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Authors: Falayi, T. | Ntuli, F.
Date: 2014-09-11
Type: Article
Identifier: uj:5114
Description: Attapulgite calcined at 973.15K was characterized and utilized as an adsorbent for the removal of heavy metals and neutralization of acid mine drainage (AMD) from a gold mine. Batch adsorption experim ... More
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Date: 2013
Language: English
Type: Abstract: Mining disturbs geologic formations that took millions of years to form; once disruption has taken place, a variety of problems may arise, from physical hazards to pollution of water and soil. The main goal of this paper is to demonstrate the technical feasibility of ferric and ferrous ions in-situ removal from Acid Mine Drainage and to design suitable flowcharts that can be used to model in-situ neutralization. The principle is based on lime neutralization without agitation that consists of diffusion and neutralization of hydrogen ions within the solution, which will increase the pH and lead to diffusion and precipitation of ferric and ferrous ions. Experimental tests were conducted with raw Acid Mine Drainage solution from Randfontein Mine (Johannesburg, South Africa) and the method shows that it is possible to achieve about 90 - 98% efficiency for ferric and ferrous ions in-situ removal from Acid Mine Drainage.
Identifier: http://hdl.handle.net/10210/16892
Date: 2012
Type: Book chapter
Identifier: uj:5024
Description: Preliminary investigation was conducted to evaluate the utilization of bottom ash and fly ash by-products on a study limited to their role as alkalizing reagents, with the ultimate objective of examin ... More
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Date: 2012
Type: Article
Identifier: uj:6045
Description: Please refer to full text to view abstract
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Authors: Huberts, R
Date: 2011
Language: English
Type: Abstract: Metal sulphate containing acid mine water decantation is generally expected to be an ever increasing challenge as mining activity winds down on the Witwatersrand. The water is contaminated due to by-products of aerobic bacterial action, which catalyses the oxidation of sulphide minerals in the presence of oxygen and water. During the flooding of an abandoned mine, air is replaced with ground water, limiting the access of oxygen as this gas is only sparingly soluble in water. This paper is a theoretical study on how the quality of decanting mine water at a given location may be expected to vary in the longer term.
Identifier: http://hdl.handle.net/10210/16954
Contributor: Dr. J.M. Meeuwis
Date: 2009-02-05T07:07:54Z
Type: Thesis
Identifier: uj:14873
Description: M.Sc.
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