Polarity and Molecular Weight of Compost-Derived Humic Acids Impact Bio-dechlorination of Pentachlorophenol

Yuan, Ying; Xi, Beidou; He, Xiao-Song; Tan, Wenbing; Zhang, Hui; Li, Dan; Yang, Chao; Zhao, Xinyu

doi:10.1021/acs.jafc.8b05864

Cited by 13 publications

(10 citation statements)

References 36 publications

(88 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…HSs can be reduced by microorganisms in the presence of electron donors commonly found in anaerobic environments (sulfide, ferrous iron, or nitrate) [ 15 , 86 , 185 , 192 ]. The reduced HSs can transfer electrons to strong electron acceptors, such as halogenated compounds or nitroaromatics, facilitating their biodegradation [ 206 , 226 , 243 ].…”

Section: Nature-like Bioremediation Technologies Based On Hs–microorganism Interactionsmentioning

confidence: 99%

Section: Research Needsmentioning

confidence: 99%

“…The dependence of pentachlorophenol (PCP) biodegradation on peculiar properties of HSs under reducing conditions was established by [ 226 ]. The hydrophobicity and molecular weight of HSs were demonstrated as the main properties determining the efficiency of PCP bio-dechlorination [ 226 ]. In another study, the effect of HAs extracted from forest, paddy, and peat soil on the microbial community involved in anaerobic mineralization of PCP was estimated [ 228 ].…”

Section: Research Needsmentioning

confidence: 99%

“…Yuan and coauthors revealed a strong dependence of bio-dechlorination of PCP in the presence of different HSs on Fe 2 O 3 or Fe 3 O 4 reduction environments [ 226 ]. Under Fe 2 O 3 reduction conditions, relatively hydrophilic and high-molecular-weight HSs were more efficient for PCP biodegradation.…”

Section: Research Needsmentioning

confidence: 99%

“…Under Fe 2 O 3 reduction conditions, relatively hydrophilic and high-molecular-weight HSs were more efficient for PCP biodegradation. In contrast, the hydrophobic and low-molecular-weight components were the main functional components for PCP bio-dechlorination in Fe 3 O 4 reduction environment [ 226 ]. The authors concluded that the effective components within HSs for dechlorination of PCP would be changed with the type of Fe(III) mineral in the environment.…”

Section: Research Needsmentioning

confidence: 99%

See 4 more Smart Citations

Interactions between Humic Substances and Microorganisms and Their Implications for Nature-like Bioremediation Technologies

Куликова

Perminova

2021

Molecules

View full text Add to dashboard Cite

The state of the art of the reported data on interactions between microorganisms and HSs is presented herein. The properties of HSs are discussed in terms of microbial utilization, degradation, and transformation. The data on biologically active individual compounds found in HSs are summarized. Bacteria of the phylum Proteobacteria and fungi of the phyla Basidiomycota and Ascomycota were found to be the main HS degraders, while Proteobacteria, Actinobacteria, Bacteroidetes, and Firmicutes were found to be the predominant phyla in humic-reducing microorganisms (HRMs). Some promising aspects of interactions between microorganisms and HSs are discussed as a feasible basis for nature-like biotechnologies, including the production of enzymes capable of catalyzing the oxidative binding of organic pollutants to HSs, while electron shuttling through the utilization of HSs by HRMs as electron shuttles may be used for the enhancement of organic pollutant biodegradation or lowering bioavailability of some metals. Utilization of HSs by HRMs as terminal electron acceptors may suppress electron transfer to CO2, reducing the formation of CH4 in temporarily anoxic systems. The data reported so far are mostly related to the use of HSs as redox compounds. HSs are capable of altering the composition of the microbial community, and there are environmental conditions that determine the efficiency of HSs. To facilitate the development of HS-based technologies, complex studies addressing these factors are in demand.

show abstract