Biosorption of mercury(II) ions from aqueous solution by garlic (Allium sativum L.) powder

Yujin Eom, Jong Hyun Won, Jae Yong Ryu, Tai Gyu Lee

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34 Citations (Scopus)

Abstract

A biosorbent was prepared by drying garlic (Allium sativum L.) under vacuum and tested in its powder form for its mercury adsorption capability in aqueous solution. Results show that garlic powder has a good adsorption capacity for mercury and that the mercury concentration of the solution has a significant impact on the adsorption capacity of the biosorbent. The Langmuir and Freundlich adsorption isotherms were also constructed. The adsorption capacity, qmax, adsorption efficiency, b, and correclation confficient, r2 for the Langmuir model were 0.6497, 0.4903, and 0.9980, respectively. For the Freundlich model, the model parameters, KF, 1/n, and r2 for mercury were 4.1879, 0.3467, and 0.9518, respectively. Langmuir adsorption isotherm was better suited for the adsorption of mercury onto garlic powder, and that the maximum amount of mercury adsorbed (qmax) was 0.6497 mg/g.

Original languageEnglish
Pages (from-to)1439-1443
Number of pages5
JournalKorean Journal of Chemical Engineering
Volume28
Issue number6
DOIs
Publication statusPublished - 2011 Jun

Bibliographical note

Funding Information:
This work was supported by Ministry of Environment as the Eco-technopia 21 project (No. 2007-01003-0059-0) and by the National Research Foundation of Korea (NRF) grant funded by the Korea government (MEST) (No. 2009-0079977).

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Chemical Engineering(all)

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