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https://hdl.handle.net/20.500.13091/6258
Title: | Unveiling the microbial co-metabolism behavior for electrical-driven degradation of phenol in bioanode | Authors: | Zhang, Yuanxin Li, Hang Gao, Jingqing Oksüz, Seçil Tutar Zhang, Changsen Liu, Panpan |
Keywords: | Bioanode Co-metabolism E -degradation Phenol degradation Degrading Phenol Biofilm |
Publisher: | Elsevier | Abstract: | Uncovering the behavior of microbial co-metabolism will provide a vision of microbial mutualistic mechanisms for degrading refractory organics by bioanode and expedite the application of microbial electrochemical technology. Here, microbial co-metabolism is established by adding acetate sodium and is used to stimulate the electrical-driven degradation (e-degradation) of phenol by bioanode. The efficiency of e-degradation for 50 mg L- 1 phenol achieved 24.8 % and the total electron recovery was improved by 289 f 40 % compared with that without microbial co-metabolism. This improvement is found for the e-degradation of 20 mg L- 1, 30 mg L- 1, and 100 mg L- 1 phenol. A big external resistance would inhibit the metabolism of exoelectrogens and lead to a decrease in electron recovery. Abundant exoelectrogens (Geobacter spp. and Pseudomonas spp.) are enriched in bioanode with microbial co-metabolism and the biofilm can perform extracellular electron transport through various pathways with the mid-potential of -0.24 V and -0.42 V, respectively. In addition, elevated amounts of intermediates for phenol e-degradation further demonstrate that microbial co-metabolism stimulates the conversion of phenol in bioanode. The insights gained from this study will assist in disclosing microbial interaction behavior in degrading refectory pollutants by bioanode. | URI: | https://doi.org/10.1016/j.psep.2024.08.049 https://hdl.handle.net/20.500.13091/6258 |
ISSN: | 0957-5820 1744-3598 |
Appears in Collections: | Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collections WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collections |
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