DocumentCode
3337362
Title
Notice of Retraction
Adsorption Characteristics of Zn(II) and Cu(II) on Alkaline Ca-Bentonite
Author
Hanbing Zhang ; Zhangfa Tong ; Tengyou Wei ; Yankui Tang
Author_Institution
Sch. of Chem. & Chem. Eng., Guangxi Univ., Nanning, China
fYear
2011
fDate
10-12 May 2011
Firstpage
1
Lastpage
3
Abstract
Notice of Retraction
After careful and considered review of the content of this paper by a duly constituted expert committee, this paper has been found to be in violation of IEEE´s Publication Principles.
We hereby retract the content of this paper. Reasonable effort should be made to remove all past references to this paper.
The presenting author of this paper has the option to appeal this decision by contacting TPII@ieee.org.
Adsorption of Zn(II) and Cu(II) from aqueous solution on alkaline Ca-bentonite (ACB) has been studied using batch technique. Experiments were carried out as a function of solution pH, dosage of ACB and contact time in single system. Langmuir isotherm model was selected to analyze the equilibrium data for Zn(II) and Cu(II) adsorption on ACB in single and binary systems. The results indicated that ACB had about 99% Zn(II) and Cu(II) adsorption over a wide pH range 4.0-7.0. Zn(II) and Cu(II) adsorption on ACB was quick and the adsorption efficiency reached nearly 70% within 5 min for both metals. Langmuir isotherm fit the data well in single system and the Langmuir monolayer adsorption capacities of Zn(II) and Cu(II) were 208 mg/g and 192 mg/g, respectively. In the binary system, the effect of mixture on ACB was found to be synergistic for Cu(II) but antagonistic for Zn(II). In conclusion, ACB is an effective adsorbent for Zn(II) and Cu(II) removal from aqueous solution.
After careful and considered review of the content of this paper by a duly constituted expert committee, this paper has been found to be in violation of IEEE´s Publication Principles.
We hereby retract the content of this paper. Reasonable effort should be made to remove all past references to this paper.
The presenting author of this paper has the option to appeal this decision by contacting TPII@ieee.org.
Adsorption of Zn(II) and Cu(II) from aqueous solution on alkaline Ca-bentonite (ACB) has been studied using batch technique. Experiments were carried out as a function of solution pH, dosage of ACB and contact time in single system. Langmuir isotherm model was selected to analyze the equilibrium data for Zn(II) and Cu(II) adsorption on ACB in single and binary systems. The results indicated that ACB had about 99% Zn(II) and Cu(II) adsorption over a wide pH range 4.0-7.0. Zn(II) and Cu(II) adsorption on ACB was quick and the adsorption efficiency reached nearly 70% within 5 min for both metals. Langmuir isotherm fit the data well in single system and the Langmuir monolayer adsorption capacities of Zn(II) and Cu(II) were 208 mg/g and 192 mg/g, respectively. In the binary system, the effect of mixture on ACB was found to be synergistic for Cu(II) but antagonistic for Zn(II). In conclusion, ACB is an effective adsorbent for Zn(II) and Cu(II) removal from aqueous solution.
Keywords
adsorption; copper; wastewater treatment; zinc; Langmuir isotherm model; Langmuir monolayer adsorption capacities; adsorption characteristics; alkaline Ca-bentonite; aqueous solution; batch technique; binary system; Copper; Data models; Hazards; Ions; Isothermal processes; Wastewater;
fLanguage
English
Publisher
ieee
Conference_Titel
Bioinformatics and Biomedical Engineering, (iCBBE) 2011 5th International Conference on
Conference_Location
Wuhan
ISSN
2151-7614
Print_ISBN
978-1-4244-5088-6
Type
conf
DOI
10.1109/icbbe.2011.5781083
Filename
5781083
Link To Document