LI Bao 1,2 , HUANG Qiang 1,2 , LIU Xiaoling 1 , NI Jianmei 1 , GUO Yuan 1 , HAO Likai 1,3
(1. State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, CAS, Guiyang 550081, China;
2. University of Chinese Academy of Science, Beijing 100049, China;
3. CAS Center for Excellence in Quaternary Science and Global Change, Xi’ an 710061, China)
Abstract: The continuing processes of rapid urbanization and industrialization have led to serious environmental pollution. Althoughphysico-chemical treatment methods can be effective at removing pollutants, they are typically expensive and complex to implement. Therefore, environmentally friendly, cost-effective and sustainable microbial remediation strategies have attracted a lot of attention. Shewanella species have an electron transport system composed of cytochromes and electron shuttles, allowing them to not only use organicor inorganic pollutants as electron donors or receptors for pollutant removal directly, but also drive Fenton reaction, synthesize nanoparticles, and construct bioelectrochemical systems to degrade and utilize pollutants indirectly. Thus Shewanella species are widely used in environmental remediation research. This review thoroughly summarizes the status quo of the application of Shewanella species in biore mediation of environmentally hazardous contaminants, as well as a synoptical discussion of their extracellular electron transfer mechanism, in order to provide a reference for the application of Shewanella in the field of environmental remediation.
Key words:Shewanella genus; electron transfer; organic pollutants; heavy metals; inorganic nonmetallic ions
EARTH AND ENVIRONMENT： Vol. 51, No. 5, Tot No.355 2023
