화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Korean Journal of Chemical Engineering, Vol.33, No.9, 2703-2710, September, 2016
DOI10.1007/s11814-016-0152-0  Export Citation
Hydrochar preparation from black liquor by CO2 assisted hydrothermal treatment: Optimization of its performance for Pb2+ removal
Yong Sun1, 2, †, Jing Ping Zhang2, Fei Guo3, and Lian Zhang4
  • 1School of Engineering, Edith Cowan University, 270 Joondalup Drive Joondalup, WA 6027, Australia
  • 2National Engineering Laboratory of Cleaner Production Technology, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China
  • 3Department of Sports Science and Technology, Shanxi Normal University, Xi’an 710068, China
  • 4Department of Chemical Engineering, Monash University, VIC, 3800, Australia
E-mail:
Hydrochar was produced from hydrothermal treatment of corn straw black liquor. Response surface methodology (RSM) and the central composite design (CCD) were employed for determination of optimal char with maximum Pb2+ removal capacity. The operational parameters such as hydrothermal temperature (℃), duration (min) and solid liquid ratio (LSR) were chosen as independent variables in CCD. The statistical analysis indicates that the effects of hydrothermal temperature, duration, LSR and combined effect of hydrothermal temperature and duration are all significant for the Pb2+ removal capacity. The optimal condition for achieving the maximum Pb2+ adsorption capacity is obtained as the following: hydrothermal temperature (205 ℃), duration (28min), LSR (12) with Pb2+ removal capacity reaching 47mg/g. The BET specific surface area of char prepared at optimal conditions could reach 85m2/g.
Keywords:Hydrochar;Black Liquor;Hydrothermal;Pb2;CCD
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