A critical discussion of volatile organic compounds recovery techniques
- Authors: Muzenda, Edison
- Date: 2013
- Subjects: Abatement , Absorption , Condensation , Membrane separation , Volatile organic compounds - Recovery
- Type: Article
- Identifier: uj:4879 , ISSN 2277 – 4394 , http://hdl.handle.net/10210/12592
- Description: This paper discusses 4 volatile organic compounds recovery technologies. The study focusses on the principle of operation as well as the strengths and weaknesses of each abatement technique. The four techniques discussed are absorption, adsorption, condensation and membrane separation.
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A revisit and review of experimental variables affecting chromatographic organics - polydimethylsiloxane interactions
- Authors: Muzenda, Edison
- Date: 2012
- Subjects: Absorption , Liquid loading , Polymers , Sorption mechanism , Specific retention volume , Thermodynamics
- Type: Article
- Identifier: uj:5339 , ISSN 2277 – 4394 , http://hdl.handle.net/10210/8909
- Description: Please refer to full text to view abstract
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A revisit and review of experimental variables affecting chromatographic organics - polydimethylsiloxane interactions
- Authors: Muzenda, Edison
- Date: 2012
- Subjects: Absorption , Liquid loading , Polymers , Specific retention volume , Gas-liquid chromatography , Polydimethylsiloxane
- Type: Article
- Identifier: uj:4897 , ISSN 2277 – 4394 , http://hdl.handle.net/10210/12990
- Description: The effect of experimental variables namely liquid loading, sample size, temperature, vapour pressure and carrier gas flow rate on gas-liquid chromatographic technique (GLC) with polydimethylsiloxane (PDMS) as the stationary phase...
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A study on the performance of sodium mercaptobenzothiazole (NMBT) collector on the flotation of Black Mountain ore
- Authors: Ikotun, Adeshina G. , Muzenda, Edison , Ntuli, Freeman
- Date: 2012
- Subjects: Black Mountain ore , Sodium mercaptobenzothiazole , Hydrogen-ion concentration
- Type: Article
- Identifier: uj:5329 , ISSN 2277 – 4394 , http://hdl.handle.net/10210/8630
- Description: This paper investigated the performance of Sodium Mercaptobenzothiazole (NMBT) as a collector in the flotation of Black Mountain ore. The ore contains metals such as lead, copper and zinc and the associated minerals of economic importance are chalcopyrite, galena and sphalerite respectively, with traces of silver. The study evaluated the effectiveness of the collector and how pH affects the recovery of minerals in particular copper. The performance of the collector was influenced by mineral surface chemistry. The experimental test work was conducted at varying pH levels using Denver flotation cell in order to investigate the collector performance in a basic medium. The experiments were conducted at two different test runs of slightly basic solutions of pH 8.5 and 9.0. The results of both fresh ore and floated ore samples were analysed using XRF. Although Black mountain ore contains small quantities of copper as compared to other ores, a significant amount was recovered (±78% of the available copper in the ore), as an indication of the performance of NMBT.
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