Related Experiment Video
Updated: Jul 19, 2026

Development of Sulfidogenic Sludge from Marine Sediments and Trichloroethylene Reduction in an Upflow Anaerobic Sludge Blanket Reactor
Published on: October 15, 2015
Microbial reduction of hexavalent chromium by landfill leachate
Yarong Li1, Gary K-C Low, Jason A Scott
1School of Chemical Engineering and Industrial Chemistry, The University of New South Wales, Sydney 2052, Australia. yarong.li@environment.nsw.gov.au
Abstract:
The reduction of hexavalent chromium (Cr(VI)) in municipal landfill leachates (MLL) and a non-putrescible landfill leachate (NPLL) was investigated. Complete Cr(VI) reduction was achieved within 17 days in a MLL when spiked with 100 mg l(-1) Cr(VI) or less. In the same period, negligible Cr(VI) reduction was observed in NPLL. In MLL, Cr(VI) reduction was demonstrated to be a function of initial Cr(VI) concentration and bacterial biomass and organic matter concentrations. The bacteria were observed to tolerate 250 mg l(-1) Cr(VI) in MLL and had an optimal growth activity at pH 7.4 in a growth medium. The MLL also possessed an ability to sequentially reduce Cr(VI) over three consecutive spiking cycles.
Related Concept Videos
Microbial Bioremediation of Uranium
Microbial Leaching
Microbial Bioremediation of Pesticides
Microbial Wastewater Treatment
Microbes and Other Elemental Cycles
Microbial Corrosion

