Activated Carbon Prepared from Semi-Coke as an Effective Adsorbent for Dyes
Mei Dong 1,   Huiliang Zhou 1  
,   Wanyi Liu 1,   Chenlong He 1
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State Key Laboratory of High-efficiency Coal Utilization and Green Chemical Engineering, College of Chemistry and Chemical Engineering, Ningxia University, Yinchuan 750021, China
Huiliang Zhou   

School of Chemistry&Chemical Engineering,Ning xia University
Submission date: 2018-02-11
Final revision date: 2018-04-03
Acceptance date: 2018-12-15
Online publication date: 2019-10-04
Publication date: 2020-01-16
Pol. J. Environ. Stud. 2020;29(2):1137–1142
Activated carbon from semi-coke (named SAC) was successfully prepared by high temperature vapor activation. As an adsorbent, its adsorption behaviors for dyes from aqueous solutions was studied. The porous texture parameters determined by N2 adsorption at 77 K indicated that SAC was essentially mesoporous and had a surface area of 724.9 m2 g-1. SEM result showed clearly that the surface of SAC was very porous. The adsorption experiment data exhibited that the adsorption capacity of SAC increased with the contact time until adsorption equilibrium. The adsorption mechanism of SAC was explored by isotherm and kinetic studies. It was found that the adsorption of dye followed the Freundlich isotherm and the pseudo first-order equation.