Strategy for economical and enhanced polyhydroxyalkanoate production from synergistic utilization of palm oil and derived wastewater by activated sludge
文献类型： 外文期刊
作者： Li, Dongna 1 ; Gao, Miao 1 ; Qiu, Yujuan 1 ; Su, Yuhang 3 ; Ma, Xiaojun 1 ; Wang, Fei 1 ; Li, Jianing 2 ; Yu, Lili 1 ;
作者机构： 1.Tianjin Univ Sci & Technol, Coll Light Ind Sci & Engn, Tianjin 300457, Peoples R China
2.Chinese Acad Trop Agr Sci, Rubber Res Inst, State Key Lab Breeding Base Cultivat & Physiol Tro, Minist Agr,Key Lab Biol & Genet Resource Utilizat, Danzhou 571737, Peoples R China
3.Fujian Polytech Normal Univ, Coll Mat & Environm Engn, Fuqing 350300, Peoples R China
关键词： Polyhydroxyalkanoate; Palm oil; Wastewater; Mixed microbial cultures; Co-substrate
期刊名称：BIORESOURCE TECHNOLOGY （ 影响因子：11.4； 五年影响因子：10.6 ）
ISSN： 0960-8524
年卷期： 2023 年 370 卷
页码：
收录情况： SCI
摘要： The potential of palm oil and derived wastewater pretreated by enzyme as co-substrates to accumulate poly-hydroxyalkanoate (PHA) rich in short and medium-chain-length monomers under two feeding strategies was evaluated batchwise through mixed microbial cultures (MMCs) in activated sludge. A terpolymer with the maximum PHA content of 30.5 wt%, volumetric yield of 0.372 g COD/g COD and composition of ca. 84.7 -97.4/0.5 -1.6/2.1 -13.7 (3-hydroxybutyrate/ 3-hydroxyvalerate/ 3-hydroxyoctanoate, %) was achieved as a result of co-substrate incorporation. From the perspective of economic benefits, PHA accumulated via adopting strategy of supplementing carbon source to the same initial concentration per cycle saved 42.7 % of carbon consumption, along with a reduction in culture time (72 h). The above discoveries signify that the combination of palm oil and derived wastewater plus MMCs provides an alternative to the plastics industries for a more sus-tainable and efficient utilization of biological resources and an economic PHA accumulation approach.
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