不同浓度原油对好氧及缺氧生物系统中水解聚丙烯酰胺生物转化的影响研究：生物资源产量、酶活性及微生物功能。
Insights into the effect of different levels of crude oil on hydrolyzed polyacrylamide biotransformation in aerobic and anoxic biosystems: Bioresource production, enzymatic activity, and microbial function.
机构信息
Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education/Institute for Advanced Ocean Study, Ocean University of China, Qingdao 266100, China; College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao 266100, China.
Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education/Institute for Advanced Ocean Study, Ocean University of China, Qingdao 266100, China; College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao 266100, China.
出版信息
Bioresour Technol. 2019 Dec;293:122023. doi: 10.1016/j.biortech.2019.122023. Epub 2019 Aug 20.
The differences of crude oil recovery ratio resulted in different levels of crude oil in actual hydrolyzed polyacrylamide (HPAM)-containing wastewater. The effect of crude oil on HPAM biotransformation was explored from bioresource production, enzymatic activity and microbial function. In aerobic biosystems, the highest polyhydroxyalkanoate (PHA) yield (19.6%-40.2%) and dehydrogenase (DH) activity (4.06-8.32 mg·g VSS) occurred in the 48th hour, and increased with crude oil concentration (0-400 mg·L). In anoxic biosystems, the highest PHA yield (24.5%-50.5%) and DH activity (3.24-6.69 mg·g VSS) occurred in the 72nd hour, and increased with crude oil concentration. The higher substrate removal (38.5%-65.7%) occurred in aerobic biosystems, while the higher PHA accumulation occurred in anoxic biosystems. PHA yield, DH activity and HPAM removal were related. Microbial function related to HPAM biodegradation and PHA synthesis was discussed. The main function of Pseudomonas and Bacillus in aerobic biosystems was to degrade HPAM, and in anoxic biosystems was to synthesize PHA.
原油采收率的差异导致实际水解聚丙烯酰胺（HPAM）含油废水中的原油含量存在差异。从生物资源生产、酶活性和微生物功能方面探讨了原油对 HPAM 生物转化的影响。在好氧生物系统中，聚羟基烷酸酯（PHA）的最高产率（19.6%-40.2%）和脱氢酶（DH）活性（4.06-8.32 mg·g VSS）出现在第 48 小时，且随原油浓度（0-400 mg·L）增加而增加。在缺氧生物系统中，PHA 的最高产率（24.5%-50.5%）和 DH 活性（3.24-6.69 mg·g VSS）出现在第 72 小时，且随原油浓度增加而增加。好氧生物系统中表现出更高的基质去除率（38.5%-65.7%），而缺氧生物系统中则表现出更高的 PHA 积累。PHA 产率、DH 活性和 HPAM 去除率之间存在相关性。讨论了与 HPAM 生物降解和 PHA 合成相关的微生物功能。好氧生物系统中假单胞菌和芽孢杆菌的主要功能是降解 HPAM，而在缺氧生物系统中是合成 PHA。
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