厌氧发酵液为底物合成聚羟基脂肪酸酯(PHA)的研究进展  

Research progress in synthesis of polyhydroxyalkanoates using anaerobic fermentation broth as

作　　者：林炳荣 LIN Bingrong(Longyan Shuifa Environmental Group Co,Ltd,Longyan 364000,China)

机构地区：[1]龙岩市水发环境集团有限公司,福建龙岩364000

出　　处：《中国塑料》2024年第10期36-42,共7页China Plastics

摘　　要：聚羟基脂肪酸酯(PHA)是一种微生物细胞内合成的高分子生物聚酯,因可以替代石油基原料制备可降解生物塑料,受到广泛关注。但目前PHA的合成成本较高限制了其大规模生产应用,开发利用低成本碳源合成PHA的技术是降低成本的有效方法之一。有机废弃物厌氧发酵液富含挥发性脂肪酸,是合成PHA的良好底物,利用厌氧发酵液合成PHA不但可以实现废物资源化利用,还可以得到PHA产物替代传统石油基塑料原料,同时降低PHA的生产成本。本文以低成本碳源合成PHA作为降低生产成本的重要方向,主要讨论了有机废弃物厌氧发酵机制,并重点介绍了污泥和餐厨垃圾厌氧发酵液合成PHA的相关研究及其影响因素。最后对以厌氧发酵液为底物合成PHA的未来研究方向进行了展望。Polyhydroxyalkanoates(PHAs)are a type of high molecular⁃weight bio⁃polyesters synthesized within microbial cells and have attracted widespread attention due to their potential to replace traditional petroleum⁃based raw materials for the preparation of biodegradable thermoplastics.However,the high cost of PHAs currently limits their large⁃scale production and applications.Developing a technology to synthesize PHAs using low⁃cost carbon sources is one of the most effective ways to reduce their costs.The anaerobic fermentation liquor obtained from organic waste is rich in volatile fatty acids and can serve as an excellent substrate for the synthesis of PHAs.Utilizing anaerobic fermentation liquor for the synthesis of PHAs not only can obtain the resourceful utilization of waste but also can produce PHAs to replace traditional petroleum⁃based thermoplastic materials.Meanwhile,the production cost of PHAs can be reduced.Taking the synthesis of PHAs derived from low⁃cost carbon sources as an important direction for reducing production costs,this paper mainly discussed the mechanism of organic waste anaerobic fermentation and focused on the research progress and influencing factors related to the synthesis of PHAs from the anaerobic fermentation liquor of sludge and kitchen waste.Finally,the paper gave an outlook on future research directions for synthesizing PHAs using anaerobic fermentation liquor as a substrate.

关 键 词：聚羟基脂肪酸酯 可降解塑料 厌氧发酵 挥发性脂肪酸 低成本 微生物合成 

分 类 号：TQ323.4[化学工程—合成树脂塑料工业]