Related Experiment Video
Updated: Jun 21, 2026

Development and Validation of Chromium Getters for Solid Oxide Fuel Cell Power Systems
Published on: May 26, 2019
Sonoassisted microbial reduction of chromium
Mathur Nadarajan Kathiravan1, Ramalingam Karthick, Naggapan Muthu
1Department of Chemical Engineering, A.C. College of Technology, Anna University, Chennai 600025, India.
Abstract:
This study presents sonoassisted microbial reduction of hexavalent chromium (Cr(VI)) using Bacillus sp. isolated from tannery effluent contaminated site. The experiments were carried out with free cells in the presence and absence of ultrasound. The optimum pH and temperature for the reduction of Cr(VI) by Bacillus sp. were found to be 7.0 and 37 degrees C, respectively. The Cr(VI) reduction was significantly influenced by the electron donors and among the various electron donors studied, glucose offered maximum reduction. The ultrasound-irradiated reduction of Cr(VI) with Bacillus sp. showed efficient Cr(VI) reduction. The percent reduction was found to increase with an increase in biomass concentration and decrease with an increase in initial concentration. The changes in the functional groups of Bacillus sp., before and after chromium reduction were observed with FTIR spectra. Microbial growth was described with Monod and Andrews model and best fit was observed with Andrews model.
Related Concept Videos
Microbial Bioremediation of Uranium
Microbial Corrosion
Microbial Leaching
Microbes and Other Elemental Cycles
Microbial Wastewater Treatment
Microbial Bioremediation of Pesticides

