Adsorption of hexavalent chromium onto sisal pulp/polypyrrole composites

3rd International Conference on Advanced Materials Research and Applications

Tan, Y.Y.^1,2 ; Wei, C.^1 ; Gong, Y.Y.^1 ; Du, L.L.^1

College of Materials Science and Engineering, Guilin University of Technology, Guilin, China^1

Shenzhen Youpuhui Pharmaceutical Co. Ltd., Shenzhen, China^2

关键词: Adsorption capacities;    Energy dispersive X ray spectroscopy;    Field emission scanning electron microscopy;    In-situ chemical oxidations;    Langmuir isotherm models;    Polarizing optical microscopy;    Pseudo-second order model;    Structure and morphology;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/170/1/012007/pdf
DOI  :  10.1088/1757-899X/170/1/012007

来源: IOP

【 摘 要 】

Sisal pulp/polypyrrole composites(SP/PPy) utilized for the removal of hexavalent chromium [Cr(VI)] from wastewater, were prepared via in-situ chemical oxidation polymerization approach. The structure and morphology of the SP/PPy were analyzed by polarizing optical microscopy (POM), field-emission scanning electron microscopy (SEM)), Energy-dispersive X-ray spectroscopy (EDS) and X-ray photoelectron spectroscopy (XPS), the results indicated SP could be efficient dispersion of PPy. The hexavalent chromium adsorption results indicate adsorption capacity of the SP/PPy were dependent on the initial pH, with an optimum pH of 2.0. The sorption kinetic data fitted well to the pseudo-second order model and isotherm data fitted well to the Langmuir isotherm model. The maximum adsorption capacity determined from the Langmuir isotherm is 336.70 mg/g at 25° C.