摘要
为揭示双酚F的厌氧归趋及提高双酚F的厌氧生物转化速率,本文以硝酸盐为电子受体,研究了Pseudomonas sp.HS-2厌氧转化双酚F的特性,并外加4种疏水性蒽醌类化合物(蒽醌、1-氨基蒽醌、2-氨基蒽醌、2-羟基蒽醌)来促进双酚F的厌氧转化.结果表明,菌株HS-2能够将双酚F厌氧转化为4,4-二羟基二苯基甲酮.最适培养条件为:硝酸盐5 mmol·L^-1、pH=7和温度35℃.在最适条件下,4种疏水性蒽醌类化合物均能促进双酚F厌氧转化,且2-氨基蒽醌的促进作用最明显.当2-氨基蒽醌浓度为20 mg·L^-1时,准一级反应速率常数为2.9×10^-2 h^-1,较不加2-氨基蒽醌体系提高了37.1%.在无硝酸盐存在时,2-氨基蒽醌不能使菌株HS-2厌氧转化双酚F.但当硝酸盐存在时,外加2-氨基蒽醌则能够促进双酚F的厌氧转化.
To reveal the fate and promote bisphenol F anaerobic biotransformation, the characteristics of bisphenol F biotransformation by Pseudomonas sp. HS-2 were studied using nitrate as an electron acceptor. Four hydrophobic anthraquinone compounds(ACs) anthraquinone, 1-aminoanthraquinone, 2-aminoanthraquinone(2-AAQ), 2-hydroxyanthraquinone were added to promote the biotransformation. The results show that strain HS-2 could anaerobically transform bisphenol F to 4,4-dihydroxybenzophenone. The optimal reaction conditions were 5 mmol·L^-1 nitrate, pH 7 and 35 ℃. All the four hydrophobic ACs could promote the biotransformation, 2-AAQ has the highest efficiency. Under 20 mg·L^-1 of 2-AAQ, the pseudo-first-order reaction rate constant reached 2.9×10^-2 h^-1, 37.1% higher than that without 2-AAQ.
作者
张倩
吕红
周杨
王晓磊
张宝瑞
ZHANG Qian;LV Hong;ZHOU Yang;WANG Xiaolei;ZHANG Baorui(Key Laboratory of Industrial Ecology and Environmental Engineering,Ministry of Education,Dalian University of Technology,Dalian 116024)
出处
《环境科学学报》
CAS
CSCD
北大核心
2019年第9期2938-2944,共7页
Acta Scientiae Circumstantiae
基金
国家自然科学基金(No.21577015)
