Evaluation of insoluble xanthate and crosslinked starch-graft-polyacrylamide-co-sodium xanthate for the adsorption of Cu(II) in aqueous solutions | Zendy

Jun Tan | Zendy; Xiaoyan Wei | Zendy; Yuxia Ouyang | Zendy; Rui Liu | Zendy; Ping Sun | Zendy; Juhong Fan | Zendy

Open Access

Evaluation of insoluble xanthate and crosslinked starch-graft-polyacrylamide-co-sodium xanthate for the adsorption of Cu(II) in aqueous solutions

Author(s) -

Jun Tan,

Xiaoyan Wei,

Yuxia Ouyang,

Rui Liu,

Ping Sun,

Juhong Fan

Publication year - 2015

Publication title -

chemical industry and chemical engineering quarterly

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.189

H-Index - 26

eISSN - 2217-7434

pISSN - 1451-9372

DOI - 10.2298/ciceq141102002t

Subject(s) - xanthate , adsorption , chemistry , aqueous solution , ion exchange , polyacrylamide , freundlich equation , inorganic chemistry , ionic strength , metal ions in aqueous solution , nuclear chemistry , copper , industrial wastewater treatment , wastewater , metal , polymer chemistry , organic chemistry , ion , environmental engineering , engineering

The effectiveness of insoluble xanthate (ISX) and crosslinked starch-graft-polyacrylamide-co-sodium xanthate (CSAX) for Cu(II) removal from wastewater was evaluated. The two types of xanthates were characterized by SEM, XRD, FTIR, and elemental analysis. Also, the factors influencing adsorption behaviors of copper ions from aqueous solutions were investigated. The results indicated CSAX had higher absorption capacity for Cu(II) than ISX because it contained more N and S. While as far as the removal efficiency was concerned, ISX was better than CSAX for its strong ligand-CSS- groups. The removal efficiency of Cu(II) onto CSAX and ISX increased with the increase in pH. The mechanism for Cu(II) adsorption was ionic exchange for ISX whereas both ion exchange and physical adsorption contributed to adsorption by CSAX. The adsorption kinetics of ISX and CSAX for Cu(II) were favorably described by the pseudo-second-order kinetic model, and the adsorption isotherms were described well with the Freundlich isotherm model. The study with synthetic wastewater showed CSAX was a worthwhile alternative to the traditional ISX only when the wastewater contained both Cu(II) and turbidity.

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