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Study on the Removal of Heavy Metals by Biomass

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Abstract:

In this paper, the adsorption of heavy metals by biomass, namely dry garlic stem, an environmentally-friendly and natural adsorbent, were studied．The efficiency of the adsorbent was studied under different experimental conditions by varying parameters such as pH, initial concentration and contact time using batch adsorption technique. The results show that at pH 5.50, room temperature, the adsorption time 90 min and the amount of garlic stem 0.5 g, Co2+ have the maximum adsorption capacity. The maximum adsorption capacity of the Co2+ on garlic stem is 14.9 mg/g. At pH 9.50, the adsorption time 90 min and the amount of garlic stem 0.7g, Cd2+ have the maximum adsorption at the same temperature. The maximum adsorption of the Cd2+ is 20.90 mg/g. At pH 10.0, the adsorption time 150 min and the amount of garlic stem 0.3g, Ni2+ have the maximum adsorption at the same temperature. The dry garlic stem is a efficient adsorbent in removing cobalt, cadmium and nickel from aqueous solution.

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Periodical:

Advanced Materials Research (Volumes 634-638)

Pages:

276-279

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.634-638.276

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Online since:

January 2013

Authors:

Neng Zhou, Zhen Zhou, Yuan Qin, Chu Jie Zeng

Keywords:

Adsorption, Cadmium Ion, Cobalt Ion, Garlic, Nickel Ion

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© 2013 Trans Tech Publications Ltd. All Rights Reserved

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