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Yu JX, Zhu J, Feng LY, et al. Simultaneous removal of cationic and anionic dyes by the mixed sorbent of magnetic and non-magnetic modified sugarcane bagasse. J Colloid Interface Sci. 2015;451:153-60doi: 10.1016/j.jcis.2015.04.009.
Yu, J. X., Zhu, J., Feng, L. Y., & Chi, R. A. (2015). Simultaneous removal of cationic and anionic dyes by the mixed sorbent of magnetic and non-magnetic modified sugarcane bagasse. Journal of colloid and interface science, 451153-60. https://doi.org/10.1016/j.jcis.2015.04.009
Yu, Jun-xia, et al. "Simultaneous removal of cationic and anionic dyes by the mixed sorbent of magnetic and non-magnetic modified sugarcane bagasse." Journal of colloid and interface science vol. 451 (2015): 153-60. doi: https://doi.org/10.1016/j.jcis.2015.04.009
Yu JX, Zhu J, Feng LY, Chi RA. Simultaneous removal of cationic and anionic dyes by the mixed sorbent of magnetic and non-magnetic modified sugarcane bagasse. J Colloid Interface Sci. 2015 Aug 01;451:153-60. doi: 10.1016/j.jcis.2015.04.009. Epub 2015 Apr 11. PMID: 25897851.
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J Colloid Interface Sci. 2015 Aug 01;451:153-60. doi: 10.1016/j.jcis.2015.04.009. Epub 2015 Apr 11.

Simultaneous removal of cationic and anionic dyes by the mixed sorbent of magnetic and non-magnetic modified sugarcane bagasse.

Journal of colloid and interface science

Jun-xia Yu, Jing Zhu, Li-yuan Feng, Ru-an Chi

Affiliations

  1. 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.
  2. 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. Electronic address: [email protected].

PMID: 25897851 DOI: 10.1016/j.jcis.2015.04.009

Abstract

Magnetic carboxyl groups modified (MMS) and non-magnetic amine groups modified (AMS) sugarcane bagasse were prepared and mixed to remove cationic and anionic dye simultaneously from aqueous solution. For comparison, the adsorption performances of MMS, AMS and the mixed sorbent for basic magenta (cationic dye) and congo red (anionic dye) were investigated in the binary system. Zeta potential analysis showed that MMS was negatively charged and AMS was positively charged in the investigated pH range. The adsorption capacities of MMS for basic magenta and congo red were 1.24 and 0.04mmolg(-1), while those of AMS were 0.04 and 1.55mmolg(-1), respectively. Both of MMS and AMS had high adsorption capacity and affinity toward opposite-charged dye but low adsorption capacity and affinity toward similar-charged dye. Adsorption experiments in the binary system showed that only the mixed sorbent could remove the two dyes simultaneously from aqueous solution (removal efficiencies >90%). The amounts of basic magenta and congo red absorbed on the mixed sorbent both increased linearly with the increase of their initial concentrations in the investigated range. The dye loaded mixed magnetic and non-magnetic sorbents could be separated by a magnet. MMS and AMS could be regenerated by using acid and alkaline eluents, respectively. After regeneration, the MMS and AMS could be mixed again and used repeatedly. The mixed sorbent had great potential in practical dye waste water treatment.

Copyright © 2015 Elsevier Inc. All rights reserved.

Keywords: Adsorption; Basic magenta; Congo red; Magnetic sorbent; Modified sugarcane bagasse

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