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Optimization of the preparation of activated carbon from steam activated cornstraw black liquor for phenol removal
Author(s) -
Sun Yong,
Zhang Jing ping.,
Guo Fei,
Zhang Lian
Publication year - 2016
Publication title -
asia‐pacific journal of chemical engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.348
H-Index - 35
eISSN - 1932-2143
pISSN - 1932-2135
DOI - 10.1002/apj.1983
Subject(s) - phenol , carbonization , activated carbon , response surface methodology , adsorption , chemistry , central composite design , black liquor , specific surface area , nuclear chemistry , chromatography , chemical engineering , catalysis , organic chemistry , engineering , lignin
The activated carbon (AC) was produced from steam activation of cornstraw black liquor. Response surface methodology (RSM) and the central composite design (CCD) were employed for determining optimal adsorbents with maximum phenol removal capacity. The operational parameters such as activation temperature (°C), duration (min) and steam velocity (SV) (L min −1 ) were chosen as independent variables in CCD. The statistical analysis indicates that the effects of activation temperature, duration, steam flow rate and combined effect of activation temperature and duration are all significant to the phenol removal capacity. The optimal condition for achieving the maximum phenol adsorption capacity is obtained as the followings: carbonization temperature (850 °C), duration (2.1 h) and SV (38 L h −1 ) with phenol removal capacity reaching 130 mg/g. The BET specific surface area of AC prepared at optimal conditions could reach 800 m 2 /g. © 2016 Curtin University of Technology and John Wiley & Sons, Ltd.