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PubMed Publications| Keyword search (4,164 papers available) |  |
"Biodegradation" Keyword-tagged Publications:
| Title: | Effects of electron acceptors and donors on anaerobic biodegradation of PAHs in marine sediments | ||||
| Authors: | Chen Q, Li Z, Chen Y, Liu M, Yang Q, Zhu B, Mu J, Feng L, Chen Z | ||||
| Link: | https://pubmed.ncbi.nlm.nih.gov/38113802/ | ||||
| DOI: | 10.1016/j.marpolbul.2023.115925 | ||||
| Publication: | Marine pollution bulletin | ||||
| Keywords: | Anaerobic biodegradation; Electron acceptor; Electron donor; Marine sediments; PAHs; | ||||
| PMID: | 38113802 | Category: | Date Added: | 2023-12-19 | |
| Dept Affiliation: |
ENCS
1 Zhejiang Key Laboratory of Petrochemical Environmental Pollution, Zhejiang Ocean University, Zhoushan 316022, PR China; National & local Joint Engineering Research Center of Harbor Oil & Gas Storage and Transportation Technology, Zhejiang Ocean University, Zhoushan 316022, PR China. 2 Zhejiang Key Laboratory of Petrochemical Environmental Pollution, Zhejiang Ocean University, Zhoushan 316022, PR China; School of Marine Science & Technology, Zhejiang Ocean University, Zhoushan 316022, PR China. 3 Zhejiang Key Laboratory of Petrochemical Environmental Pollution, Zhejiang Ocean University, Zhoushan 316022, PR China. 4 College of Ecology and Environment, Hainan Tropical Ocean University, Sanya 572022, PR China. Electronic address: mj@hntou.edu.cn. 5 Department of Building, Civil and Environmental Engineering, Faculty of Engineering & Computer Sciences, Concordia University, Montreal, Quebec H3G1M8, Canada. | ||||
Description: |
Polycyclic aromatic hydrocarbons (PAHs) are typical organic pollutants accumulated in the environment. PAHs' bioremediation in sediments can be promoted by adding electron acceptor (EA) and electron donor (ED). Bicarbonate and sulfate were chosen as two EAs, and acetate and lactate were selected as two EDs. Six groups of amendments were added into the sediments to access their role in the anaerobic biodegradation of five PAHs, containing phenanthrene, anthracene, fluoranthene, pyrene, and benzo[a]pyrene. The concentrations of PAHs, EAs and EDs, electron transport system activity, and microbial diversity were analyzed during 126-day biodegradation in serum bottles. The HA group (bicarbonate and acetate) achieved the maximum PAH degradation efficiency of 89.67 %, followed by the SL group (sulfate and lactate) with 87.10 %. As the main PAHs degrading bacteria, the abundance of Marinobacter in H group was 8.62 %, and the addition of acetate significantly increased the abundance of Marinobacter in the HA group by 75.65 %. |
