Photo-Assisted Enhancement of Uranium Mine Wastewater Purification by a Self-Assembled Shewanella putrefaciens-CdS Biohybrid System
Source abstract
Abstract
Integrated light-trapping capability semiconductor and bioreduction advantages of photosensitive biohybrid systems are a promising approach to purify uranium mine wastewater. In this study, we developed a photosensitized Shewanella putrefaciens -CdS biohybrid system for the removal of uranium, which achieved more than 90% U(VI) removal efficiency in real uranium mine wastewater. By use of in situ Kelvin probe force microscopy (KPFM), we identified that photoelectrons generated over CdS were transferred to Shewanella putrefaciens ( S. putrefaciens ) to enhance the excellent uranium removal performance of the S. putrefaciens –CdS biohybrid. In addition, we performed transcriptomics analysis on the genes (cytochrome c, ABC transport, and electron transfer) linked to U(VI) reduction in the biohybrid system and discovered that these genes were significantly upregulated. This work deepens our understanding of the electron transfer pathways and the physiological activities of the biohybrid system, which provides an important reference for the purification of uranium mine wastewater.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Radioactive element chemistry and processing · Metal Extraction and Bioleaching · Microbial Fuel Cells and Bioremediation
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
State Key Laboratory of Environment-friendly Energy Materials, National Co-innovation Center for Nuclear Waste Disposal and Environmental Safety, Sichuan Civil-military Integration Institute, School of Life Science and Engineering, Southwest University of Science and Technology, Mianyang, Sichuan 621010, P. R. China
Laboratory Animal Centre, North Sichuan Medical College, Nanchong, Sichuan 637100, P. R. China
Department of Agricultural Science and Technology, Nanchong Vocation and Technical College, Nanchong, Sichuan 637131, P. R. China
Funding
China National Nuclear Corporation · Science and Technology Department of Sichuan Province · National Natural Science Foundation of China · State Key Laboratory of Environmental-friendly Energy Materials · Southwest University of Science and Technology · Nanchong Social Science Research Project
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