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Comparison of the accelerating effect of graphene oxide and graphene on anaerobic transformation of bisphenol F by Pseudomonas sp. LS
Environmental Technology ( IF 2.8 ) Pub Date : 2021-07-08 , DOI: 10.1080/09593330.2021.1946167
Hong Lu 1 , Jingyi Li 1 , Ze Fu 1 , Xiaolei Wang 1 , Jiti Zhou 1 , Jing Wang 1
Affiliation  

ABSTRACT

It was found that bisphenol F (BPF) could be anaerobically transformed to 4,4-dihydroxybenzophenone using nitrate as an electron acceptor by Pseudomonas sp. LS. However, BPF removal was a slow process under anaerobic conditions. In the present study, effects of graphene oxide (GO) and graphene on the anaerobic transformation of BPF were studied in detail. Results showed that GO (2–10 mg/L) and graphene (2–20 mg/L) could increase the anaerobic biotransformation rate of BPF. For GO-mediated system, GO was partially reduced, and then the reduced GO (rGO) as an electron mediator increased biotransformation rate of BPF. Further analysis showed that the promoting effect of 10 mg/L GO was over 1.5-fold higher compared with that of 10 mg/L graphene. BPF could be transformed using GO as an electron acceptor. GO and graphene was also used as nutrient scaffolds to promote cell growth via adsorbing proteins. Moreover, GO was a better cell growth promoter than graphene. These studies indicated that GO played more roles and exhibited a better accelerating effect on anaerobic removal of BPF compared with graphene.



中文翻译:

氧化石墨烯和石墨烯对假单胞菌厌氧转化双酚F的促进作用比较。LS

摘要

发现双酚F(BPF)可以被假单胞菌以硝酸盐作为电子受体厌氧转化为4,4-二羟基二苯甲酮。sp。LS。然而,在厌氧条件下,BPF 的去除是一个缓慢的过程。本研究详细研究了氧化石墨烯(GO)和石墨烯对BPF厌氧转化的影响。结果表明,GO(2-10 mg/L)和石墨烯(2-20 mg/L)可以提高BPF的厌氧生物转化率。对于 GO 介导的系统,GO 被部分还原,然后还原的 GO (rGO) 作为电子介质增加了 BPF 的生物转化率。进一步分析表明,与 10 mg/L 石墨烯相比,10 mg/L GO 的促进作用高出 1.5 倍以上。BPF 可以使用 GO 作为电子受体进行转化。GO 和石墨烯也被用作营养支架,通过吸附蛋白质促进细胞生长。此外,GO 是比石墨烯更好的细胞生长促进剂。

更新日期:2021-07-08
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