Original scientific paper
https://doi.org/10.15255/CABEQ.2013.1856
A Fast Approach for Preparation of Adsorbent from Reed Black Liquor and Its Performance in Equilibrium and Kinetic Gas Separation
G. Yang
; National Engineering Laboratory of Hydrometallurgical Cleaner Production Technology, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, 100190, China
Y. Sun
; a)National Engineering Laboratory of Hydrometallurgical Cleaner Production Technology, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, 100190, China; b)Edith Cowan University, School of Engineering, 270 Joondalup Drive Joondalup WA
C. Wen
; School of Information Science and Technology, Northwest University, Xi’an, 710069, China
J. P. Zhang
; National Engineering Laboratory of Hydrometallurgical Cleaner Production Technology, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, 100190, China
Abstract
A new approach using reed pulping black liquor by hydrothermal reaction followed by fast carbonization at 350 °C in fluidized bed reactor for 5 minutes was proposed in this paper. The BET specific surface area generated at optimum conditions reached 390 m2 g–1. The CO2 selectivity over CH4 and N2 comparable to commercial activated carbons was obtained. The isosteric enthalpies of adsorption for CO2, CH4 and N2 on the resultant carbon sample prepared at optimum conditions show surface heterogeneity. The kinetic results indicate its potential for separation of carbon dioxide from carbon dioxide/methane mixture.
Keywords
reed; black liquor; carbon adsorbent; kinetic CO2/CH4 separation
Hrčak ID:
147003
URI
Publication date:
14.10.2015.
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