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Adsorption kinetics and optimum conditions for Cr(VI) removal by activated carbon prepared from luffa sponge

Miao, Ming-sheng, Wang, Yan-na, Kong, Qiang and Shu, Li 2016, Adsorption kinetics and optimum conditions for Cr(VI) removal by activated carbon prepared from luffa sponge, Desalination and water treatment, vol. 57, no. 17, pp. 7763-7772, doi: 10.1080/19443994.2015.1015453.

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Title Adsorption kinetics and optimum conditions for Cr(VI) removal by activated carbon prepared from luffa sponge
Author(s) Miao, Ming-sheng
Wang, Yan-na
Kong, Qiang
Shu, Li
Journal name Desalination and water treatment
Volume number 57
Issue number 17
Start page 7763
End page 7772
Total pages 10
Publisher Taylor and Francis
Place of publication Oxford, Eng.
Publication date 2016-04
ISSN 1944-3994
1944-3986
Keyword(s) AC
Adsorption
Cr(VI)
Luffa sponge
Summary Activated carbon (AC) prepared from luffa sponge was firstly used as an adsorbent to remove Cr(VI) from aqueous solution. The Cr(VI) adsorption behaviors of AC under different conditions, including initial Cr(VI) concentration, quantity of AC, solution pH, and temperature were investigated. The optimal conditions for adsorption of Cr(VI) by AC were pH = 1, initial Cr(VI) concentration = 80 mg/L, T = 303 K, and AC content = 1.6 g/L. The adsorption kinetics could be described by the pseudo-second-order model. Fourier transform infrared spectroscopy was used to investigate the sorption mechanism. Some functional groups such as C–O and O–H were formed on the carbon surface, which could then react with Cr(VI). The surface structure of AC before and after adsorption was analyzed by scanning electronic microscopy. Adsorbed ions choked some of the pores in AC after adsorption. The Brunauer–Emmett–Teller surface area and average pore size of the AC were 834.13 m2/g and 5.17 nm, respectively. The maximum adsorption of Cr(VI) by AC was 149.06 mg/g, which makes AC prepared from luffa sponge promising for removing Cr(VI) from wastewater.
Language eng
DOI 10.1080/19443994.2015.1015453
Field of Research 090404 Membrane and Separation Technologies
090508 Water Quality Engineering
090408 Rheology
Socio Economic Objective 829803 Management of Liquid Waste from Plant Production (excl. Water)
HERDC Research category C1 Refereed article in a scholarly journal
ERA Research output type C Journal article
Copyright notice ©2015, Taylor & Francis
Persistent URL http://hdl.handle.net/10536/DRO/DU:30076799

Document type: Journal Article
Collection: School of Engineering
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Created: Tue, 25 Aug 2015, 16:19:59 EST

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