藻类胞外聚合物的产生因素及其在污水处理和生物絮凝方面的应用

Factors influencing the production of algal extracellular polymers and their application in wastewater treatment and biological flocculation

摘要:

藻类胞外聚合物(extracellular polymeric substances, EPS)是一种复杂的高分子聚合物，主要由多糖、蛋白质等物质组成。由于EPS具有独特的结构、大的比表面积及含有大量官能团等物理-化学特性，使其在污水处理及微藻生物质的絮凝回收等方面都有着非常重要的作用。本文系统介绍了EPS的组成及特性，重点论述了影响藻类EPS产生的生物因素及非生物因素，如光照、营养盐、pH及温度等，并对EPS在污水处理及生物絮凝方面的应用进行了总结。对藻类EPS产生机制及机理的深入研究有望为微藻提供更广阔的应用前景。

Abstract:

With the main constituents of polysaccharides and proteins, microalgal extracellular polymers substances (EPS) feature unique structure, large specific surface area, and a large number of functional groups, playing a very important role in wastewater treatment and flocculation for recovering microalgal biomass. In this paper, we introduce the composition and characteristics of EPS, focusing on the biotic factors and abiotic factors that affect the production of EPS, such as light, nutrients, pH, and temperature. The application of EPS in wastewater treatment and bioflocculation is summarized. The in-depth research on the production mechanism of microalgal EPS is expected to expand the application of microalgae.