淡水微藻（小球藻属）中重金属（铜、铬、铅和镉）的积累。

Accumulation of heavy metals (Cu, Cr, Pb and Cd) in freshwater micro algae (Chlorella sp.).

作者信息

Kumar Rajesh M, Frankilin J, Raj Samuel Paul

出版信息

J Environ Sci Eng. 2013 Jul;55(3):371-6.

Abstract

Some selected micro algae were used for the removal of heavy metals from wastewater. In this present investigation, Chlorella sp was studied for accumulation of heavy metals, namely copper, chromium, lead and cadmium. The salts containing heavy metals were dissolved in Blue Green 11 medium at different concentrations in a glass jar of 10 litre capacity each and subsequently they were bubbled with air for 12 days at a temperature of 33 degrees C and light intensity of 2200 lux. The removal rates of heavy metals were recorded for every 4 days during the experimental period. Chlorella sp. removed 37%, 43% and 67% of copper after 4, 8, 12 days respectively. The percentage removal of chromium was 34%, 43% and 50% respectively at 4, 8, and 12 days. Lead removal rates of Chlorella sp were 56% after 4 days, 69% after 8 days and 77% after 12 days. The reduction of cadmium in the culture medium after 12 days was 93%. From the present investigation, it is concluded that heavy metal removal ability of Chlorella sp. can be exploited for metal detoxification and environmental clean up.

摘要

一些选定的微藻被用于去除废水中的重金属。在本次研究中，对小球藻属进行了研究，以考察其对铜、铬、铅和镉等重金属的积累情况。将含重金属的盐以不同浓度溶解在10升容量的玻璃瓶中的蓝绿11培养基中，随后在33摄氏度的温度和2200勒克斯的光照强度下向其中通入空气12天。在实验期间，每4天记录一次重金属的去除率。小球藻属在4天、8天和12天后分别去除了37%、43%和67%的铜。在4天、8天和12天时，铬的去除率分别为34%、43%和50%。小球藻属对铅的去除率在4天后为56%，8天后为69%，12天后为77%。12天后培养基中镉的减少量为93%。从本次研究可以得出结论，小球藻属的重金属去除能力可用于金属解毒和环境清理。