In situ bioreduction of hexavalent chromium-contaminated water using a microbial culture barrier
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Date
Authors
Kholisa, Buyisile
Matsena, Mpumelelo Thomas
Chirwa, Evans M.N.
Journal Title
Journal ISSN
Volume Title
Publisher
Wiley
Abstract
Chromium (Cr) has been extensively used in many industrial applications. Inappropriate
disposal of effluent has led to increased Cr concentrations in the environment.
As a result, Cr(VI) has been classified under strict control measures by
most national and international lists of highly toxic materials. Bioremediation of
Cr(VI)-contaminated effluents appears to be a more economical and environment-
friendly treatment method. This study investigates Cr(VI) removal in a
bench-scale bioreactor using municipal dried sludge as a permeable bioreactive
barrier. The 20-cm-thick permeable bioreactive barrier with 30% sludge and 70%
sand was able to achieve 95% Cr(VI) removal during 90 operational days, demonstrating
the effectiveness of the biological permeable reactive barrier system in
treating Cr(VI)-containing process effluent streams.
Description
DATA AVAILABILITY STATEMENT : Data are available on request due to privacy or other restrictions.
Keywords
Bioreduction, Chromium, Microbial cultures, Permeable bioreactive barriers
Sustainable Development Goals
None
Citation
Kholisa, B., Matsena, M.T. & Chirwa, E.M.N. 2023, 'In situ bioreduction of hexavalent chromium-contaminated water using a microbial culture barrier', Chemical Engineering & Technology, vol. 46, no. 6, pp. 1307-1311.
DOI: 10.1002/ceat.202200421.