Dynamics of trichloroethylene adsorption on activated carbons

International Scientific Conference «AGRITECH-2019: Agribusiness, Environmental Engineering and Biotechnologies»

农业科学;生态环境科学;生物科学

Gorelkina, A.K.^1 ; Krasnova, T.A.^1 ; Timoshchuk, I.V.^1 ; Gora, N.V.^1 ; Golubeva, N.S.^1

Kemerovo State University, 47 Stroiteley blvr., Kemerovo

650056, Russia^1

关键词: Constant flow rates;    Dynamic adsorption;    In compositions;    Oxygen containing groups;    Pore diffusion;    Porous structures;    Solution flow rate;    Surface chemical state;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/315/5/052026/pdf
DOI  :  10.1088/1755-1315/315/5/052026

来源: IOP

【 摘 要 】

We studied trichloroethylene adsorption from aqueous solutions on activated carbons (SKD-515, ABG, and Purolat-Standart brands), which differ in composition, method of production, structure and surface chemical state. Performance time of the filter layer before the breakthrough decreased in SKD-515 > ABG > Purolat-Standart respectively, which was caused by their porous structure and the nature of functional oxygen-containing groups on carbon surface. The interaction of trichloroethylene with functional groups of carbon surface was also noted. We studied the layer height on efficiency of trichloroethylene adsorption on different activated carbons at a constant flow rate. The reduction of the solution flow rate through the filter contributed to the increase of the dynamic adsorption capacity, which indisputably proved pore diffusion resistance of mass transfer.