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Please use this identifier to cite or link to this item: http://repository.iitr.ac.in/handle/123456789/14651
Title: Batch and column study: Adsorption of arsenate using untreated laterite as adsorbent
Authors: Maiti, Abhijit
DasGupta S.
Basu J.K.
De S.
Published in: Industrial and Engineering Chemistry Research
Abstract: Removal of arsenate (As(V)) ions by adsorption on natural laterite (NL) is investigated in the present study. Both equilibrium and kinetic study over a wide range of operating conditions are tested to evaluate the effectiveness of NL to remove As(V) from water. In the batch study, the effects of adsorbent dose, initial pH, ionic strength of solution, initial arsenate concentration, temperature, and contact time are examined. Batch study reveals that the uptake of arsenate is effective in the pH range of 5.5 to 7.5. The isotherm data is fitted well in the Langmuir isotherm model, and adsorption capacity is found to be 0.565 mg g_1. The effective intraparticle diffusion coefficient of arsenate ions in NL is observed to be in the range of 7.4 to 9.4 × 10-10 cm2 s_1. Continuous column study using a fixed bed is also carried out. The Adams-Bohart model is applied for the predicting breakthrough curve for column study. © 2008 American Chemical Society.
Citation: Industrial and Engineering Chemistry Research (2008), 47(5): 1620-1629
URI: https://doi.org/10.1021/ie070908z
http://repository.iitr.ac.in/handle/123456789/14651
Issue Date: 2008
ISSN: 8885885
Author Scopus IDs: 23994098600
7202154532
55520926800
7202304528
Author Affiliations: Maiti, A., Department of Chemical Engineering, Indian Institute of Technology, Kharagpur, Kharagpur-721302, India
DasGupta, S., Department of Chemical Engineering, Indian Institute of Technology, Kharagpur, Kharagpur-721302, India
Basu, J.K., Department of Chemical Engineering, Indian Institute of Technology, Kharagpur, Kharagpur-721302, India
De, S., Department of Chemical Engineering, Indian Institute of Technology, Kharagpur, Kharagpur-721302, India
Corresponding Author: De, S.; Department of Chemical Engineering, Indian Institute of Technology, Kharagpur, Kharagpur-721302, India; email: sde@che.iitkgp.ernet.in
Appears in Collections:Journal Publications [PE]

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