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Please use this identifier to cite or link to this item: http://repository.iitr.ac.in/handle/123456789/3003
Title: Pesticides removal from waste water by activated carbon prepared from waste rubber tire
Authors: Gupta V.K.
Gupta B.
Rastogi A.
Agarwal S.
Nayak A.
Published in: Water Research
Abstract: Waste rubber tire has been used for the removal of pesticides from waste water by adsorption phenomenon. By applying successive chemical and thermal treatment, a basically cabonaceous adsorbent is prepared which has not only a higher mesopore, macropore content but also has a favorable surface chemistry. Presence of oxygen functional groups as evidenced by FTIR spectra along with excellent porous and surface properties were the driving force for good adsorption efficiency observed for the studied pesticides: methoxychlor, methyl parathion and atrazine. Batch adsorption studies revealed maximum adsorption of 112.0 mg g-1, 104.9 mg g-1 and 88.9 mg g-1 for methoxychlor, atrazine and methyl parathion respectively occurring at a contact time of 60 min at pH 2 from an initial pesticide concentration of 12 mg/L. These promising results were confirmed by column experiments; thereby establishing the practicality of the developed system. Effect of various operating parameters along with equilibrium, kinetic and thermodynamic studies reveal the efficacy of the adsorbent with a higher adsorption capacity than most other adsorbents. The adsorption equilibrium data obey Langmuir model and the kinetic data were well described by the pseudo-first-order model. Applicability of Bangham's equation indicates that diffusion of pesticide molecules into pores of the adsorbent mainly controls the adsorption process. Spontaneous, exothermic and random characteristics of the process are confirmed by thermodynamic studies. The developed sorbent is inexpensive in comparison to commercial carbon and has a far better efficiency for pesticide removal than most other adsorbents reported in literature. © 2011 Elsevier Ltd.
Citation: Water Research (2011), 45(13): 4047-4055
URI: https://doi.org/10.1016/j.watres.2011.05.016
http://repository.iitr.ac.in/handle/123456789/3003
Issue Date: 2011
Keywords: Adsorption isotherm
Atrazine
Kinetics
Methoxychlor
Methyl parathion
Waste rubber tire
ISSN: 431354
Author Scopus IDs: 7403420647
7402195167
57197688495
57190962034
55420158800
Author Affiliations: Gupta, V.K., Department of Chemistry, Indian Institute of Technology Roorkee, Roorkee 247667, India, Chemistry Department, King Fahd University of Petroleum and Minerals, Dhahran, 31261, Saudi Arabia
Gupta, B., Department of Chemistry, Indian Institute of Technology Roorkee, Roorkee 247667, India
Rastogi, A., Chemistry Department, K.L.D.A.V (P.G.) College, Roorkee, India
Agarwal, S., Department of Chemistry, Indian Institute of Technology Roorkee, Roorkee 247667, India
Nayak, A., Department of Chemistry, Indian Institute of Technology Roorkee, Roorkee 247667, India
Funding Details: The authors acknowledge the financial support provided by KFUPM through NSTIP Project # 10-WAT1400-04 . Arunima Nayak is thankful to Ministry of Human Resource Development. (MHRD) , New Delhi, India, for providing fellowship.
Corresponding Author: Gupta, V.K.; Department of Chemistry, Indian Institute of Technology Roorkee, Roorkee 247667, India; email: vinodfcy@gmail.com
Appears in Collections:Journal Publications [CY]

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