Kinetic and Isotherm Studies for the Adsorption of Phanerochaete Chrysosporium on Lignites

2018 5th International Conference on Advanced Composite Materials and Manufacturing Engineering

Niu, Yu^1 ; Niu, Xian^2 ; Wu, Shiyue^1 ; Li, Chuantian^1 ; Chen, Jin^1 ; Suo, Zaibin^1

College of Mining Engineering, Taiyuan University of Technology, Shanxi Province, Taiyuan

030024, China^1

College of Mining Engineering, Xi'An University of Science and Technology, Xi'an, Shan'xi Province

710054, China^2

关键词: Biosorption isotherms;    Different particle sizes;    Dynamics of adsorptions;    Microbial transformation;    Phanerochaete chrysosporium;    Pseudo-first-order;    Pseudo-second-order equations;    Spontaneous process;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/394/4/042046/pdf
DOI  :  10.1088/1757-899X/394/4/042046

来源: IOP

【 摘 要 】

Adsorption of microorganisms by coal is the first step for its microbial transformation. This study investigated the adhesion of Phanerochaete chrysosporium on Chinese lignite samples with different particle sizes. Langmuir and Freundlich models were applied to describe the biosorption isotherm of P. chrysosporium on lignites. Freundlich model fitted the equilibrium data better than Langmuir isotherm. The adhesion of P. chrysosporium on the coal surface was a spontaneous process. Pseudo-first-order and pseudo-second-order equations were applied to describe the biosorption dynamics of P. chrysosporium on lignites. Pseudo-second-order equation fitted the dynamics of adsorption better than the pseudo-first order. Adhesion experiments revealed that the adhesion rates of P. chrysosporium were 0.3539, 0.23827, and 0.20655L/(mol•min) on lignite with particle sizes of 0.25-0.5, 0.5-0.2, and 2-3mm, respectively under the contact time of 50min, 50g of lignite, 200mL of bacterial solution, and temperature of 25°C.