Bacterial mineralization of chromium-copper spinel with highly performance in electroplating effluent

Xu, Zhongxuan1; Chen, Yuxi1; Wu, Zhen1; Li, Diandi1; Li, Xiaoqin1; Feng, Xuezhen3; Deng, Hong1; Chen, Hong3; Zhang, Bintian3; Lin, Zhang1,2

2023-08-15

10.1016/j.watres.2023.120229

WATER RESEARCH   影响因子和分区

0043-1354

1879-2448

Cr (VI) contamination has posed severe challenges to water quality, food safety, and land resources. Microbial reduction of Cr(VI) to Cr(III) has drawn considerable attention due to its low cost and environmental friendliness. However, recent reports have shown that Cr(VI) generates highly migratable organo-Cr(III) rather than stable inorganic chromium minerals during the biological reduction process. In this work, it was reported for the first time that spinel structure CuCr2O4 was formed by Bacillus cereus in Cr biomineralization process. Different from known biomineralization models (biologically controlled mineralization and biologically induced mineralization), the chromium-copper minerals here appeared as specialized minerals with extracellular distribution. In view of this, a possible mechanism of biologically secretory mineralization was proposed. In addition, Bacillus cereus demonstrated a high conversion ability in the treatment of electroplating wastewater. The Cr(VI) removal percentage reached 99.7%, which satisfied the Chinese emission standard of pollutants for electroplating (GB 21,900-2008), indicating its application potential. Altogether, our work elucidated a bacterial chromium spinel mineralization pathway and evaluated the potential of this system for application in actual wastewater, opening a new avenue in the field of chromium pollution treatment and control.

Cr(VI) contamination treatment and control Bacterial Cr(VI) mineralization Chromium-copper spinel Bacterial mineralization mechanism Wastewater treatment

SCI ; EI

英语

NI论文

其他

National Key Research and Development Program of China[2019YFA0210402] ; Guangdong Science and Technology Program[2019YFC1805902] ; null[2020B121201003]

Engineering ; Environmental Sciences & Ecology ; Water Resources

Engineering, Environmental ; Environmental Sciences ; Water Resources

WOS:001029001000001

PERGAMON-ELSEVIER SCIENCE LTD

20232514262122

Bacillus cereus ; Chemicals removal (water treatment) ; Chromium compounds ; Copper compounds ; Effluent treatment ; Effluents ; Electroplating ; Mineralogy ; Minerals ; Wastewater treatment ; Water quality

Water Analysis:445.2 ; Industrial Wastes:452.3 ; Industrial Wastes Treatment and Disposal:452.4 ; Biology:461.9 ; Mineralogy:482 ; Minerals:482.2 ; Electroplating:539.3.1 ; Chemical Agents and Basic Industrial Chemicals:803 ; Chemical Products Generally:804

ENVIRONMENT/ECOLOGY

Web of Science

1.South China Univ Technol, Sch Environm & Energy, Key Lab Pollut Control & Ecosyst Restorat Ind Clus, Guangdong Prov Key Lab Solid Wastes Pollut Control, Guangzhou 510006, Peoples R China
2.Cent South Univ, Sch Met & Environm, Changsha 410083, Peoples R China
3.Southern Univ Sci & Technol, Sch Environm Sci & Engn, Shenzhen 518055, Peoples R China

Xu, Zhongxuan,Chen, Yuxi,Wu, Zhen,et al. Bacterial mineralization of chromium-copper spinel with highly performance in electroplating effluent[J]. WATER RESEARCH,2023,242.

Xu, Zhongxuan.,Chen, Yuxi.,Wu, Zhen.,Li, Diandi.,Li, Xiaoqin.,...&Lin, Zhang.(2023).Bacterial mineralization of chromium-copper spinel with highly performance in electroplating effluent.WATER RESEARCH,242.

Xu, Zhongxuan,et al."Bacterial mineralization of chromium-copper spinel with highly performance in electroplating effluent".WATER RESEARCH 242(2023).