Adsorption of crystal violet dye on fish (tilapia) scale: characteristics and mechanism
Liang Zhi1,2, Che Wencheng1, Hu Xinxin1
1.Department of Chemical Engineering,Maoming Vocational and Technical College, Maoming 515000; 2.College of Light Industry,South China University of Science and Engineering,Guangzhou 510641
Abstract: A adsorbent was prepared from fish scale of tilapia and the effects of adsorbent dosage,initial concentration of crystal violet,time and solution pH value on the adsorption property were investigated.The absorption mechanism of sorbent were studied by use of kinetic,FT-IR assay,BET and SEM as well.The results showed that when the absorbent dosages was 3g/L,pH=7,30℃,the initial concentration of crystal violet was 40mg/L and adsorption time was 20min,the rate of adsorption of crystal violet was up to 66.69% while the adsorption capacity reached 8.27mg/g.The adsorption of crystal violet on the tilapia fish scales agreed with physical adsorption process,and followed the Lagergren pseudo-second-order kinetics equation.The equilibrium adsorption data of crystal violet on tilapia fish scales could be described by the Freundlich isotherm models,when T=30℃,the max adsorption capacity of crystal violet(qmax) was 18.9mg/g.The infrared analysis showed that protein and hydroxyapatite of fish scales all participated in the crystal violet absorption.
梁志,车文成,胡鑫鑫. 罗非鱼鱼鳞对水中结晶紫的吸附特性和机理研究[J]. 化工新型材料, 2019, 47(4): 208-212.
Liang Zhi, Che Wencheng, Hu Xinxin. Adsorption of crystal violet dye on fish (tilapia) scale: characteristics and mechanism. New Chemical Materials, 2019, 47(4): 208-212.
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