Adsorption of the Malachite Green by Magnetic Clam Shell Powder
Xiaodong Li 1  
,   Biao Wen 2  
,   Yunjin Li 2  
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Key Laboratory of Songliao Aquatic Environment, Ministry of Education, Jilin Jianzhu University, Changchun 130118, China
School of Materials Science and Engineering, Jilin Jianzhu University, Changchun 130118, China
Xiaodong Li   

Jilin Jianzhu University, China
Submission date: 2020-04-17
Final revision date: 2020-06-06
Acceptance date: 2020-06-09
Online publication date: 2020-09-16
Publication date: 2020-11-10
Pol. J. Environ. Stud. 2021;30(1):717–726
Magnetic clam shell powder (MCS) was prepared from river clam shell by crushing, calcining at 900ºC and Fe3O4 was loaded on it by chemical coprecipitation. The functional groups of the composites were characterized using Fourier transform infrared spectroscopy (FT-IR). Batch adsorption was conducted to study the effects of various parameters such as initial concentration, temperature, adsorbent dosage and other factors on adsorption. Through the study of adsorption isotherm model (Langmuir isotherm model, Freundlich isotherm model, Temkin isotherm model, Halsey isotherm model) , kinetic model (quasi first order kinetics, quasi second order kinetics, Elovich model) and adsorption mechanism (intraparticle diffusion and Boyd models) , it showed that the quasi-secondorder kinetic equation and Langmuir equation could describe the adsorption process well, and the intra particle diffusion, liquid film diffusion and chemical adsorption were important factors to control the reaction rate.