화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Journal of Industrial and Engineering Chemistry, Vol.20, No.5, 3467-3473, September, 2014
DOI10.1016/j.jiec.2013.12.036  Export Citation
Removal of Pb2+ and Cd2+ from aqueous solution using chars from pyrolysis and microwave-assisted hydrothermal carbonization of Prosopis africana shell
Sunday E. Elaigwu†, Vincent Rocher, Georgios Kyriakou, and Gillian M. Greenway
  • Department of Chemistry, University of Hull, Cottingham Road, Hull HU6 7RX, UK
E-mail:
Biochar and hydrochar prepared from pyrolysis and microwave-assisted hydrothermal carbonization of Prosopis africana shell respectively were used as adsorbents for the removal Pb2+ and Cd2+ from aqueous solution using batch adsorption technique. The materials proved to have good adsorption capacities and higher than some previously studied adsorbents. Maximum adsorption capacities for the hydrochar and biochar were 45.3 and 31.3 mg/g for Pb2+ and 38.3 and 29.9 mg/g for Cd2+, respectively. The adsorption process followed pseudo-second-order kinetics and the adsorption data fitted the Langmuir isotherm model. These materials could therefore be used as a low cost adsorbents in wastewater treatment.
Keywords:Biochar;Hydrochar;Microwave;Lead;Cadmium;Adsorption
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