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Removal of Cd^(2+) from aqueous solution using graphene oxide modified activate carbon derived from peanut shell

International Journal of Agricultural and Biological Engineering 2023年第5期16卷 226-235页

作者： Yilu Du Hui Wang Jiangtao Ji Xin Jin Yang Song Hao Zhang Zhi Chen School of Chemistry and Chemical Engineering Henan University of Science and TechnologyHenan Luoyang471023China College of Agricultural Equipment Engineering Henan University of Science and TechnologyHenan Luoyang471003China Analysis and Testing Center of Liming Research&Design Institute of Chemical Industry Co. Ltd.Henan Luoyang471001China Department of Building Civil and Environmental EngineeringConcordia UniversityMontreal H3G 1M8Canada

graphene oxide(GO)was prepared by a modified Hummers method using peanut shells and natural graphite,and graphene oxide modified peanut shells activated carbon composites(GO-AC)were synthesized by *** optimal preparation conditions of AC were screened by response surface methodology(RSM)to optimize the preparation *** results showed that the surface of GO-AC had more micropores and larger specific surface area,increased the surface adsorption sites and had more oxygen-containing functional *** adsorption process was mainly based on chemisorption,and the adsorption capacity was 3.45 and 1.30 times higher than that of BC(45.16 mg/g)and AC(119.21 mg/g),*** six adsorption-desorption cycle tests,the adsorption amount of Cd^(2+)by GO-AC was still as high as 89.26 mg/g,with a percentage increase of 93.5%and 365%compared to BC(19.18 mg/g)and AC(46.13 mg/g),respectively,with good *** research can provide a useful reference for the high value-added conversion of waste biomass,and GO-AC loading modified with significant adsorption of Cd2+has good potential for application as a novel and low-cost adsorbent.

关键词： graphene oxide-modified biochar response surface optimization adsorption heavy metal

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