Photobioreactor Design for Polyhydroxyalkanoate Production Using Anoxygenic Photoheterotrophs: A Review

IF 3.3 3区农林科学 Q2 BIOTECHNOLOGY & APPLIED MICROBIOLOGY

Fermentation-Basel Pub Date : 2023-08-21 DOI:10.3390/fermentation9080778

Sultan Shaikh, Naim Rashid, Gordon McKay, H. Mackey

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Abstract

This review paper provides an overview of various types of photobioreactors (PBRs) that could be used for the production of polyhydroxyalkanoates (PHAs) using anoxygenic photoheterotrophs, with a focus on the design and operation of these systems. The paper highlights the potential of different PBRs based on reactor geometry and growth mode, and also examines the advantages and disadvantages of each PBR type and summarizes their suitability for PNSB-PHA production. The optimization of reactor design and operation is crucial for maximizing PNSB growth and PHA productivity. The self-immobilization of bacteria in granular sludge is a promising technology for wastewater treatment and the production of PHAs, while grooved-surface PBRs and porous-substrate PBRs have limitations due to difficult biomass harvesting in the former and the presence of aerobic conditions incongruent with PNSB culturing in the latter. Limitations exist with all solutions for maximizing rapid growth and maintaining high biomass concentrations due to the requirements of phototrophic growth.

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利用缺氧光异养菌生产聚羟基烷酸酯的光生物反应器设计：综述

本文概述了可用于使用缺氧光异养菌生产聚羟基烷酸酯（PHA）的各种类型的光生物反应器（PBRs），重点介绍了这些系统的设计和操作。本文强调了基于反应器几何形状和生长模式的不同PBR的潜力，还考察了每种PBR类型的优缺点，并总结了它们对PNSB-PHA生产的适用性。反应器设计和操作的优化对于最大限度地提高PNSB生长和PHA生产率至关重要。细菌在颗粒污泥中的自固定化是一种很有前途的废水处理和PHA生产技术，而沟槽表面PBRs和多孔基质PBRs由于前者难以收获生物质，以及后者存在与PNSB培养不一致的好氧条件而受到限制。由于光养生长的要求，所有用于最大限度地实现快速生长和保持高生物量浓度的解决方案都存在局限性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Fermentation-Basel BIOTECHNOLOGY & APPLIED MICROBIOLOGY-

CiteScore

3.80

自引率

18.90%

发文量

594

审稿时长

7 weeks