化学氧化法去除微囊藻毒素的研究进展

有害藻类水华污染已经成为世界范围性的环境难题。微囊藻毒素是藻细胞释放的一种毒性物质,具有极强的肝毒性和致癌性。当水源水受到藻类污染时,高效的微囊藻毒素去除技术十分必要。氧化法包括氯化、臭氧、高锰酸盐等化学氧化以及芬顿和基于紫外线的高级氧化,已经成功应用于微囊藻毒素的降解去除。本文综述了各种化学氧化法去除藻毒素的动力学、影响因素、降解机制和产物毒性等方面的研究进展,比较分析了各种氧化法的优、劣以及适用范围,并对未来藻毒素去除技术研究进行了展望,为微囊藻毒素的有效去除提供参考。

Progress in chemical oxidation for the removal of microcystins

Microcystins (MCs) are water soluble toxic compounds released from cyanobacteria (blue-green algae). MCs may induce apoptosis and promote tumor formation, posing a significant threat to the ecosystem integrity and human health. Recently, an increasing occurrence of toxic cyanobacterial outbreak results in the need of efficient treatment methods for MCs removal. Chemical oxidation processes provide a promising alternative treatment option due to the potential of complete degradation MCs and formation less toxic byproducts. In this study, we systematically summarized the current research status of conventional and advanced oxidation processes (AOPs) for MCs removal, in terms of the degradation efficiency, reaction kinetics, possible degradation mechanism, identity and toxicity of oxidation by-products. The advantages and disadvantages of each method were also compared. In addition, further research challenges and needs are also proposed.