Dynamic Adsorption of Cr (VI) Ions from Aqueous Solution by Canna Edulis Ker Residue in a Fixed-bed Column
A continuous dynamic adsorption in a fixed-bed column was studied by canna edulis ker residue (CEKR) as an adsorbent for the removal of Cr (VI) ions from aqueous solution.The dynamic adsorption process was simulated by some mathematic models,to determine the characteristic parameters of the column.The results indicated that CEKR could effectively absorb Cr (VI) ions from aqueous solution.Breakthrough time reaching saturation increased significantly with the increase of the temperature,while the bed depth increased and the pH value decreased.In comparison,the initial metal concentration is able to slightly affect the adsorption.Some mathematical models could calculate the rate constants,correlation coefficients,the equilibrium adsorption and kinetic parameters,however,they were not suitable for the description the dynamic adsorption of Cr (VI) ions in the fixed-bed column.
Canna edulis ker residue Cr (VI) ion Adsorption Mathematical modeling Breakthrough curve
Shan Lin Yudong Lu Xiaoxuan Lin Zonghua Wu
College of Materials Science and Engineering, Fujian Normal University, Fuzhou 350007, China College of Chemistry and Chemical Engineering, Fujian Normal University, Fuzhou 350007, China
国际会议
the Chinese Materials Congress 2012(2012年中国材料大会(CMC2012))
太原
英文
498-503
2012-07-13（万方平台首次上网日期，不代表论文的发表时间）