微藻对污水中重金属的生物吸附(英文)

Microalgal biosorption on the heavy metals in polluted waters

在我国,水源污染问题异常突出,特别是水体重金属污染情况非常严重,因此,如何有效治理水体重金属污染成为了摆在科技工作者面前十分紧迫的任务。利用微藻生物吸附来治理水体重金属污染是一种经济、简便、有效可行的方法,具有极其广阔的应用前景。论文介绍了我国近年水体污染的状况及水体重金属污染特点;综述了水体重金属污染对水体植物、水体动物以及人类潜在的危害;比较了几种常见治理重金属污染的方法;分析了微藻吸附水体重金属的优点,并阐述了微藻对重金属生物吸附的机理及影响生物吸附过程的外在因素;最后提出了今后的研究发展方向。

In China, water pollution resulted from heavy metals has drawn significant attention. It is very urgent for us to adopt some effective strategies to control or treat the heavy metals in polluted water. It has been shown that using biosorption of microalgae in the treatment of heavy metals is low cost, convenient and efficient. In this paper, the status of water pollution and basic characteristics of heavy metals in water were introduced. Toxic effects of heavy metals on phytoplankton, aquatic animals, and human beings were also reviewed. Besides, three major methods commonly used in the treatment of heavy metals in polluted water were presented and compared. And then, the advantages of mieroalgal biosorption on heavy metals were summarized; some underlying mechanisms involved in the biosorption as well as the influence of environmental factors on the biosorption were presented and discussed. Finally, prospects and direction for the development of microalgal biosorption on heavy metals in the near further were put forward.