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Zhoukou, China

Sun Y.,CAS Institute of Process Engineering | Wei J.,Xian Jiaotong University | Yao M.-S.,An Peng Soda Ash Co. | Yang G.,CAS Institute of Process Engineering | Yang G.,An Peng Soda Ash Co.
Asia-Pacific Journal of Chemical Engineering | Year: 2012

Activated carbon (ACs) was produced by chemical activation of industrial furfural production waste (FPW) by different chemical activators. The carbon (HP-AC500) produced from pyrolysis of H 3PO 4-FPW at 500 °C is microporous carbon with certain proportion of mesopores whose Brunauer-Emmett-Teller (BET) surface area and pore volume could reach 751.8 m 2/g and 0.63 mL/g, respectively. The carbon (ZN-AC600) produced from pyrolysis of ZnCl 2-FPW at 600 °C is essentially microporous carbon whose BET surface area and pore volume could reach 1143 m 2/g and 0.61 mL/g, respectively. ZN-AC600 carbon shows better performance in adsorbing phenol with its maximum monolayer adsorption capacity reaching 166 mg/g, while HP-AC500 carbon shows its better performance in adsorbing Cr (VI) with maximum monolayer adsorption capacity reaching 27 mg/g. The adsorption model based on Unilan together with Clausius-Clapeyron equation provides a satisfactory representation for low-pressure CO 2, CH 4, N 2 adsorption on ZN-AC600 and HP-AC500, respectively. Both equilibrium and kinetic results show that the HP-AC500 carbon has better CO 2 separation performance. Copyright © 2011 Curtin University of Technology and John Wiley & Sons, Ltd. Source


Sun Y.,An Peng Soda Ash Co. | Yang G.,An Peng Soda Ash Co. | Yang G.,CAS Institute of Process Engineering | Zhang J.,CAS Institute of Process Engineering | And 2 more authors.
Chemical Engineering and Technology | Year: 2012

Activated carbons were produced from corn straw lignin using H 3PO 4 as activating agent. The optimal activation temperature for producing the largest BET specific surface area and pore volume of carbon was 500°C. The maximum BET specific surface area and pore volume of the resulting carbon were 820m 2g -1 and 0.8cm 3g -1, respectively. The adsorption isotherm model based on the Toth equation together with the Peng-Robinson equation of state for the determination of gas phase fugacity provide a satisfactory representation of high pressure CO 2, CH 4 and N 2 adsorption. The kinetic adsorption results show that the breakthrough difference between CO 2 and CH 4 is not obvious, indicating that its kinetic separation performance is limited. © 2012 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim. Source

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