화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Journal of Industrial and Engineering Chemistry, Vol.22, 103-109, February, 2015
DOI10.1016/j.jiec.2014.06.030  Export Citation
Biochar from woody biomass for removing metal contaminants and carbon sequestration
Tarek M. Abdel-Fattah†, Mohamed E. Mahmoud1, Somia B. Ahmed1, Matthew D. Huff2, James W. Lee2, and Sandeep Kumar3
  • Applied Research Center Thomas Jefferson National Accelerator Facility and Department of Molecular Biology and Chemistry, Christopher Newport University, Newport News, VA 23606, USA
  • 1Faculty of Sciences, Chemistry Department, Alexandria University, P.O. Box 426, Alexandria 21321, Egypt
  • 2Department of Chemistry and Biochemistry, Old Dominion University, Norfolk, VA 23529, USA
  • 3Department of Civil and Environmental Engineering, Old Dominion University, Norfolk, VA 23529, USA
E-mail:
Biochar generated from pinewood via slow pyrolysis was studied for its viability as a soil amendment as well as for its absorptive capacity for Mg, Ca, Cr, and Pb in solution. Cation exchange capacity (CEC) measurements showed that the biochar sample has a CEC of roughly double that of the reference soil sample. A high CEC value indicates that not only can the biochar sample be used as a carbon sequestration agent, but also as a valuable soil amendment for increasing a soil's natural CEC. Biochar was characterized using elemental analysis, SEM, BET surface area, FTIR, and XRF. These results showed that biochar produced via slow pyrolysis possesses several highly beneficial attributes. The metal adsorption characteristics of biochar were studied in presence of various controlling parameters such as pH, contact time, adsorbent dosage, and interfering species. The results confirmed excellent adsorption capacity values of the biochar for Mg(II), Ca(II), Cr(VI), and Pb(II) by producing 440 (pH 7.0), 120 (pH 7.0), 680 (pH 1.0), and 520 (pH 6.0) μmol g−1, respectively. The potential applications of the biochar for removal of these four metal ions from real water samples were also studied and evaluated.
Keywords:Biochar;Carbon sequestration;Cation exchange capacity;Adsortption;Isotherm;Metal ions
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