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首页> 外文期刊>Current Science: A Fortnightly Journal of Research >Biosorption of metals from contaminated water using seaweed.
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Biosorption of metals from contaminated water using seaweed.

机译：使用紫菜对污水中的金属进行生物吸附。

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摘要

Heavy metals are major pollutants in marine, lake and groundwaters as well as in industrial and even treated effluents. Biosorption, an inexpensive and reliable method to remove cadmium and lead ions from solution using dry seaweed biomass as adsorbents, was investigated. Sargassum wightii exhibited maximum metal uptake at pH 4-5 and the value ranged from 18% to 29% of dry biomass. The kinetics of metal adsorption was fast with 70-80% taking place within 30 min. Based on these results, a biobattery involving perforated columns packed with pulverized dry biomass of S. wightii was designed, which could remove metals in the range of 50-97% from a multi-metal ion solution within two and a half hours. The mechanism of metal sorption by seaweeds and the advantages of the present design of seaweed columns are discussed in the light of ecofriendly and cost-effective approach for effluent treatment..
机译：重金属是海洋，湖泊和地下水以及工业废水甚至处理过的废水中的主要污染物。研究了使用干海藻生物质作为吸附剂从溶液中去除镉和铅离子的廉价，可靠的方法生物吸附。马尾藻在pH 4-5时表现出最大的金属吸收，其值占干生物量的18％至29％。金属吸附的动力学很快，在30分钟内发生了70-80％的吸附。基于这些结果，设计了一种生物电池，该生物电池包括装有粉状链球菌干粉生物质的多孔柱，可在两个半小时内从多金属离子溶液中去除50-97％的金属。根据生态友好且经济高效的废水处理方法，讨论了海藻对金属的吸附机理以及海藻柱目前设计的优点。

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