文献类型：期刊文献

英文题名：Methanogenic biodegradation of thermoplastic poly(vinyl alcohol) films produced by two manufacturing processes in enrichment cultures

作者：Ji, Ming-Le[1,2,5];Liu, Yi-Fan[1,2,5];Bai, Yu[3];Hu, Zhen[3];Wang, James H.[3];Li, Jia-Yi[1,2,5];Qin, Wan-Qi[1,2,5];Zhou, Lei[1,2,5];Yang, Shi-Zhong[1,2,5];Gu, Ji-Dong[4];Li, Yingcheng[3];Mu, Bo-Zhong[1,2,5]

机构：[1]East China Univ Sci & Technol, State Key Lab Bioreactor Engn, 130 Meilong Rd, Shanghai 200237, Peoples R China;[2]East China Univ Sci & Technol, Sch Chem & Mol Engn, 130 Meilong Rd, Shanghai 200237, Peoples R China;[3]Sinopec Shanghai Res Inst Petrochem Technol Co Ltd, 1658 Pudong Beilu, Shanghai 201208, Peoples R China;[4]Guangdong Technion Israel Inst Technol, Environm Sci & Engn Grp, 241 Daxue Rd, Shantou 515063, Guangdong, Peoples R China;[5]East China Univ Sci & Technol, MOE Engn Res Ctr MEOR, 130 Meilong Rd, Shanghai 200237, Peoples R China

年份：2024

卷号：193

外文期刊名：INTERNATIONAL BIODETERIORATION & BIODEGRADATION

收录：;EI(收录号：20242416254377);WOS:【SCI-EXPANDED(收录号:WOS:001253749700001)】；

基金：This work was supported by the National Natural Science Foundation of China (Grant No. 42173076, 42061134011 and 52074129) , the Natural Science Foundation of Shanghai (Grant No. 21ZR1417400) , Fundamental Research Funds for the Central Universities (No. JKJ01241714) and the Research Program of State Key Laboratory of Bioreactor Engineering to Y.F.L. and B.Z.M, the NSFC/RGC Joint Research Fund (No. 41161160560) to J.D.G.

语种：英文

外文关键词：Biodegradable plastics; Thermoplastic polyvinyl alcohol (TPVA); Anaerobic biodegradation; Microbial community; Biodegradation pathway

摘要：Thermoplastic polyvinyl alcohol (TPVA) is a biodegradable polymeric plastic and is a promising alternative to traditional non-biodegradable plastics in a range of applications. However, the knowledge of anaerobic TPVA biodegradation is still limited. In this study, we evaluated the anaerobic biodegradation of two types of TPVA films manufactured using extrusion film casting and biaxial orientation methods. The results indicated that TPVA films prepared by extrusion casting were more rapidly degraded under anaerobic conditions, especially in cultures enriched from landfills than oil production water. 16S rRNA sequencing and functional prediction were performed by software PICRUSt. The results showed that members in Synergistales and Bacillales were likely responsible for secreting extracellular enzymes to depolymerize TPVA during the initial stage of the degradation process. Moreover, methanogens, such as Methanothermobacter, Methanoculleus, and Methanosarcina utilized the H2, CO2, and acetate produced from bacterial partners when degrading TPVA to generate methane. This work provides a comparative analysis and a basis for the process of anaerobic biodegradability of TPVA produced by different manufacturing processes. It is of significant importance for the future promotion of TPVA applications and the mitigation of environmental pollution.