Removal of sulphates from acid mine drainage using TDTMA modified bentonite

Mabatho Moreroa, Freeman Ntuli

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Mozambican bentonite (MB) was modified using trimethyldecylammonium bromide (TDTMA) to enhance the removal capacity of sulphates from acid mine drainage (AMD). Through the modification process the surface properties of the clay was rendered organophilic. Batch adsorption experiments of the modified clay were done in a thermostatic shaker at different temperatures, mass loading of adsorbent, and cation exchange capacity (CEC) percentages to investigate the sorption behavior of sulphates from AMD. Characterization of the modified clay was done using XRF, XRD and FTIR to investigate the chemical composition of the clay, removal mechanism and structural change of the clay due to sorption of sulphates. The reaction was endothermic and fitted the Temkin isotherm model and the second order kinetic model. More sulphates were adsorbed at higher temperatures, suggesting that this was an endothermic reaction, which was supported by the positive value of enthalpy.

Original languageEnglish
Title of host publicationProceedings of the World Congress on Engineering and Computer Science 2017, WCECS 2017
EditorsS. I. Ao, W. S. Grundfest, Craig Douglas
PublisherNewswood Limited
Pages674-678
Number of pages5
VolumeII
ISBN (Print)9789881404848
Publication statusPublished - 2017
Event2017 World Congress on Engineering and Computer Science, WCECS 2017 - San Francisco, United States
Duration: Oct 25 2017Oct 27 2017

Publication series

NameLecture Notes in Engineering and Computer Science
Volume2
ISSN (Print)2078-0958

Conference

Conference2017 World Congress on Engineering and Computer Science, WCECS 2017
CountryUnited States
CitySan Francisco
Period10/25/1710/27/17

All Science Journal Classification (ASJC) codes

  • Computer Science (miscellaneous)

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