Development of biomaterial for chromium(VI) detoxification using Aspergillus flavus system supported with iron

作者：Singh Rajesh^*; Kumar Mukesh; Bishnoi Narsi R

来源：Ecological Engineering, 2016, 91: 31-40.

DOI：10.1016/j.ecoleng.2016.01.060

• Aspergillus flavus
• Biomaterial
• Biotransformation
• Hexavalent chromium
• Biosorption

This study was aimed to develop the growing Aspergillus flavus biomaterial for Cr(VI) transformation and removal from simulated wastewater. Fe2+ ions have significant implication as it enhanced both chromium removal as well as sticky nature of the biomaterial. The values of Delta, i.e. the differences between the frequencies v(as) and v(s) of carboxyl group 146.59, 139.27, 152.38 by Fe(II), Cr(VI) and mix metalsions (Fe(II) + Cr(VI)) inferred the carboxylate ions bidentate coordination. The highest value in case of mix metals ions (Fe(II) + Cr(VI)) inferred that carboxylate groups have coordinated to surface Fe3+ ions increasingly with greatest bridging character. Heat flow value 31.36 Jg(-1) and 51.02 Jg(-1) in Fe2+ and Cr(VI) amended material respectively indicated that extremely little amount of the free water content was sorbed.

• 出版日期2016-6