Chemical Industry and Engineering Progress ›› 2024, Vol. 43 ›› Issue (6): 3374-3385.DOI: 10.16085/j.issn.1000-6613.2023-2103

• Resources and environmental engineering • Previous Articles    

Current situation and challenges of mixed culture polyhydroxyalkanoate (PHA) production using waste organics

LYU Qingyan1(), GAO Hanwen1, XIE Kunyu1, FAN Dongqing1, HUANG Long1(), CHEN Zhiqiang2   

  1. 1.School of Ecology and Environment, Zhengzhou University, Zhengzhou 450001, Henan, China
    2.School of Environment, Harbin Institute of Technology, Harbin 150090, Heilongjiang, China
  • Received:2023-11-30 Revised:2024-01-09 Online:2024-07-02 Published:2024-06-15
  • Contact: HUANG Long

废弃有机物用于混合菌群合成PHA的利用现状与挑战

吕青檐1(), 高汉文1, 谢昆谕1, 范冬青1, 黄龙1(), 陈志强2   

  1. 1.郑州大学生态与环境学院,河南 郑州 450001
    2.哈尔滨工业大学环境学院,黑龙江 哈尔滨 150090
  • 通讯作者: 黄龙
  • 作者简介:吕青檐(1996—),女,硕士研究生,研究方向为混合菌群合成生物可降解塑料。E-mail:2784501665@qq.com
  • 基金资助:
    国家自然科学基金(52000162)

Abstract:

Polyhydroxyalkanoates (PHA) is a fully biodegradable material with similar mechanical properties to traditional plastics, which is expected to replace petroleum-based plastics to solve the plastic crisis from the source. The mixed culture PHA production using cheap waste organic matters is of great significance to reduce the production cost of PHA and realize the reduction and recycling of waste organic matters. Substrate diversity is a distinctive feature of mixed culture PHA production. In this paper, the importance of substrate types in the mixed culture system was analyzed. Then the current status of mixed culture using different types of waste organic matters to synthesize PHA was reviewed. Key issues were pointed out, such as the complex waste organic matrix was easy to cause metabolic deviation, and it was difficult to accurately control product yield and performance. Based on a clear clarification of waste organic matrix, future research on the mixed culture PHA production using waste organic matters requires, targeted optimization of substrate hydrolysis acidification technology, PHA performance regulation technology, and development of green and low-loss purification technology to finally construct a high-efficiency PHA mixed culture system.

Key words: polyhydroxyalkanoates, biosynthesis, waste organic matter, mixed culture, substrate type

摘要:

聚羟基脂肪酸酯(polyhydroxyalkanoates, PHA)是一种可完全生物降解材料,具有与传统塑料相似的机械性能,有望替代石油基塑料从源头上解决塑料危机。混合菌群利用廉价的废弃有机物合成PHA,对降低PHA的生产成本,实现废弃有机物的减量化和资源化具有重要意义。底物多样化是混合菌群PHA合成工艺的鲜明特点。本文首先剖析了混合菌群PHA合成系统中底物类型的重要性,进而综述了混合菌群利用不同类型废弃有机物合成PHA的现状,指出废弃有机物基质复杂易造成代谢偏移、产品产量及性能难以精准调控等关键问题。并对混合菌群利用废弃有机物合成PHA的研究进行了展望,需在明晰废弃有机物基质组分基础上,针对性优化底物水解酸化工艺、开发PHA产物性能调控技术和绿色低损耗的产物提纯工艺,最终构建高效能的PHA混合菌群工艺系统。

关键词: 聚羟基脂肪酸酯, 生物合成, 废弃有机物, 混合菌群, 底物类型

CLC Number: 

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