title: Selective adsorption and recycle of Cu2+from aqueous solution by modified sugarcane bagasse under dynamic condition.
abstract: Tetraethylenepentamine modified sugarcane bagasse was prepared and applied to test its feasibility in removing and recovering Cu2+from wastewater under dynamic condition. Results showed that the Cu2+could be selectively absorbed from wastewater by the modified SCB fixed bed column. To understand the adsorption mechanism, Cd2+had been selected as the model interfering ion to investigate how co-ions influence the adsorption of Cu2+on the sorbent. It was observed that the adsorption capacity of the sorbent for Cu2+(0.26 mmol g-1) was significantly higher than that of Cd2+(0.03 mmol g-1), even when the Cd2+initial concentration was 100 times higher than that of Cu2+in the binary system. This finding indicated that the presence of Cd2+in the solution exerted negligible influence on the adsorption of Cu2+on the modified SCB. The selectivity of the modified sorbent was further confirmed in the Cu/Cd/Mg/Pb/K quinary system. Further analysis to dynamic adsorption experiment illustrated that, due to the presence of amine groups, the modified SCB showed strong coordination ability to Cu2+, which allowed the other adsorbed ions (e.g., Cd2+) desorbed. This high adsorption selectivity toward Cu2+suggested that this prepared sorbent would be a promising candidate for removing and recovering Cu2+from wastewater.
authors.affiliation: Hubei Novel Reactor & Green Chemical Technology Key Laboratory, Key Laboratory for Green Chemical Process of Ministry of Education, School of Chemistry and Environmental Engineering, Wuhan Institute of Technology, Wuhan, 430074, China.
authors.forename: Jia-Dong
authors.initials: JD
authors.lastname: Chen
authors.affiliation: Hubei Novel Reactor & Green Chemical Technology Key Laboratory, Key Laboratory for Green Chemical Process of Ministry of Education, School of Chemistry and Environmental Engineering, Wuhan Institute of Technology, Wuhan, 430074, China. yujunxia_1979@163.com.
authors.forename: Jun-Xia
authors.initials: JX
authors.lastname: Yu
authors.affiliation: Hubei Novel Reactor & Green Chemical Technology Key Laboratory, Key Laboratory for Green Chemical Process of Ministry of Education, School of Chemistry and Environmental Engineering, Wuhan Institute of Technology, Wuhan, 430074, China.
authors.forename: Fen
authors.initials: F
authors.lastname: Wang
authors.affiliation: Hubei Novel Reactor & Green Chemical Technology Key Laboratory, Key Laboratory for Green Chemical Process of Ministry of Education, School of Chemistry and Environmental Engineering, Wuhan Institute of Technology, Wuhan, 430074, China.
authors.forename: Jia-Qi
authors.initials: JQ
authors.lastname: Tang
authors.affiliation: Hubei Novel Reactor & Green Chemical Technology Key Laboratory, Key Laboratory for Green Chemical Process of Ministry of Education, School of Chemistry and Environmental Engineering, Wuhan Institute of Technology, Wuhan, 430074, China.
authors.forename: Yue-Fei
authors.initials: YF
authors.lastname: Zhang
authors.affiliation: Hubei Novel Reactor & Green Chemical Technology Key Laboratory, Key Laboratory for Green Chemical Process of Ministry of Education, School of Chemistry and Environmental Engineering, Wuhan Institute of Technology, Wuhan, 430074, China.
authors.forename: Yuan-Lai
authors.initials: YL
authors.lastname: Xu
authors.affiliation: Hubei Novel Reactor & Green Chemical Technology Key Laboratory, Key Laboratory for Green Chemical Process of Ministry of Education, School of Chemistry and Environmental Engineering, Wuhan Institute of Technology, Wuhan, 430074, China.
authors.forename: Ru-An
authors.initials: RA
authors.lastname: Chi
mesh_terms: D000327:Adsorption; D002482:Cellulose; D003300:Copper; D006863:Hydrogen-Ion Concentration; D031786:Saccharum; D014874:Water Pollutants, Chemical
chemical_list: D014874:Water Pollutants, Chemical; D003300:Copper; D002482:Cellulose; C027433:bagasse
keywords: Cd2+; Cu2+; Selective adsorption; Sugarcane bagasse; Tetraethylenepentamine