Impact and application of electron shuttles on the redox (bio)transformation of contaminants: A review
| Autor: | Frank P. van der Zee, Francisco J. Cervantes |
|---|---|
| Přispěvatelé: | Universidade do Minho |
| Rok vydání: | 2009 |
| Předmět: |
Pollutants
Sulfide Remediation Bioengineering Wastewater treatment 02 engineering and technology 010501 environmental sciences 01 natural sciences Applied Microbiology and Biotechnology Redox Electron shuttle Ferrous Electron Transport Degradation Perchlorate chemistry.chemical_compound Electron transfer Electrochemistry Water Pollution Chemical Organic chemistry Coloring Agents Biotransformation Environmental Restoration and Remediation 0105 earth and related environmental sciences chemistry.chemical_classification Science & Technology Redox mediator Arsenate Electron acceptor 021001 nanoscience & nanotechnology Combinatorial chemistry chemistry Metalloid Chlorine 0210 nano-technology Azo Compounds Oxidation-Reduction Biotechnology |
| Zdroj: | Repositório Científico de Acesso Aberto de Portugal Repositório Científico de Acesso Aberto de Portugal (RCAAP) instacron:RCAAP |
| ISSN: | 0734-9750 |
| Popis: | During the last two decades, extensive research has explored the catalytic effects of different organic molecules with redox mediating properties on the anaerobic (bio)transformation of a wide variety of organic and inorganic compounds. The accumulated evidence points at a major role of electron shuttles in the redox conversion of several distinct contaminants, both by chemical and biological mechanisms. Many microorganisms are capable of reducing redox mediators linked to the anaerobic oxidation of organic and inorganic substrates. Electron shuttles can also be chemically reduced by electron donors commonly found in anaerobic environments (e.g. sulfide and ferrous iron). Reduced electron shuttles can transfer electrons to several distinct electron-withdrawing compounds, such as azo dyes, polyhalogenated compounds, nitroaromatics and oxidized metalloids, among others. Moreover, reduced molecules with redox properties can support the microbial reduction of electron acceptors, such as nitrate, arsenate and perchlorate. The aim of this review paper is to summarize the results of reductive (bio)transformation processes catalyzed by electron shuttles and to indicate which aspects should be further investigated to enhance the applicability of redox mediators on the (bio)transformation of contaminants. F.P. van der Zee thanks the Portuguese Fundaicao para a Ciencia e a Tecnologia for financial support (Grant SFRH/BPD/39086/2007). F. J. Cervantes greatly acknowledges a grant from Council of Science and Technology of Mexico (Grant SEP-CONACYT-C02-55045). |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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