Skip navigation

Removal of cationic pollutants from water by xanthated corn cob: optimization, kinetics, thermodynamics, and prediction of purification process

Removal of cationic pollutants from water by xanthated corn cob: optimization, kinetics, thermodynamics, and prediction of purification process

Kostić, Miloš, Đorđević, Miloš, Mitrović, Jelena, Velinov, Nena, Bojić, Danijela, Antonijević, Milan and Bojić, Aleksandar (2017) Removal of cationic pollutants from water by xanthated corn cob: optimization, kinetics, thermodynamics, and prediction of purification process. Environmental Science and Pollution Research, 24 (21). pp. 17790-17804. ISSN 0944-1344 (Print), 1614-7499 (Online) (doi:10.1007/s11356-017-9419-1)

[img] PDF (Author Accepted Manuscript)
17400 ANTONIJEVIC_Removal_of_Cationic_Pollutants_from_Water_2017.pdf - Accepted Version
Restricted to Repository staff only until 12 June 2018.

Download (643kB) | Request a copy
[img] PDF (Acceptance Email)
17400 ANTONIJEVIC_Acceptance_Email_2017.pdf - Additional Metadata
Restricted to Repository staff only

Download (77kB) | Request a copy

Abstract

The removal of Cr(III) ions and methylene blue (MB) from aqueous solutions by xanthated corn cob (xCC) in batch conditions was investigated. The sorption capacity of xCC strongly depended of the pH, and increase when the pH rises. The kinetics was well fitted by pseudo-second order and Chrastil’s model. Sorption of Cr(III) ions and MB on xCC was rapid during the first 20 min of contact time and, thereafter, the biosorption rate decrease gradually until reaching equilibrium. The maximum sorption capacity of 17.13 and 83.89 mg g-1 for Cr(III) ions and MB, respectively was obtained at 40 °C, pH 5 and sorbent dose 4 g dm-3 for removal of Cr(III) ions and 1 g dm-3 for removal of MB. The prediction of purification process was successfully carried out and the verification of theoretically calculated amounts of sorbent was confirmed by using packed-bed column laboratory system with recirculation of the aqueous phase. The wastewater from chrome plating industry was successfully purified, i.e. after 40 min concentration of Cr(III) ions was decreased lower than 0.1 mg dm-3. Also, removal of MB from the river water was successfully carried out and after 40 min removal efficiency was about 94 %.

Item Type: Article
Uncontrolled Keywords: Xanthated biomaterial, Cr(III), Methylene blue, Sorption, Thermodynamics, Wastewater
Subjects: G Geography. Anthropology. Recreation > GE Environmental Sciences
Faculty / Department / Research Group: Faculty of Engineering & Science
Faculty of Engineering & Science > Department of Pharmaceutical, Chemical & Environmental Sciences
Last Modified: 30 Apr 2018 11:17
URI: http://gala.gre.ac.uk/id/eprint/17400

Actions (login required)

View Item View Item

Downloads

Downloads per month over past year

View more statistics