Skip navigation
Please use this identifier to cite or link to this item: http://repository.iitr.ac.in/handle/123456789/2109
Title: Simultaneous removal of arsenic and fluoride from synthetic solution through continuous electrocoagulation: Operating cost and sludge utilization
Authors: Thakur L.S.
Goyal H.
Mondal, Prasenjit
Published in: Journal of Environmental Chemical Engineering
Abstract: The present study deals with simultaneous removal of arsenic and fluoride by continuous electrocoagulation (EC) process using aluminum electrodes. Effects of flow rates: 0.48-1.40 L/h and residence time (?): 60-173 min have been studied on the removal of arsenic and fluoride. The percentage removals of arsenic and fluoride are found greater than 98.83% and 87.5% respectively. The concentrations of arsenic and fluoride in treated water are also found below the permissible limits as per World Health Organization (WHO) guidelines (As: 10 ?g/ L, F: 1.5 mg/ L). The optimum cost of continuous EC is found to be 0.358 USD/m 3 at a flow rate of 0.88 L/h with 95 min residence time. Produced sludge has been analyzed by FESEM, XRD and FTIR. Sludge characterization confirms that arsenic and fluoride are linked with aluminum hydroxide complexes. Solidication technique has been used for the management of the produced sludge by its immobilization in the form of clay brick. Leaching test results show that leaching of arsenic and uoride from the brick is much below the permissible limits assigned according to the US Environmental Protection Agency (USEPA) norms. The brick quality parameters are found above the respective permissible limits as per Indian standard indicating it suitability for use in construction purposes. © 2018 Elsevier Ltd.
Citation: Journal of Environmental Chemical Engineering (2019), 7(1): -
URI: https://doi.org/10.1016/j.jece.2018.102829
http://repository.iitr.ac.in/handle/123456789/2109
Issue Date: 2019
Publisher: Elsevier Ltd
Keywords: Arsenic
Continuous electrocoagulation
Fluoride
Operating cost
Sludge management
ISSN: 22133437
Author Scopus IDs: 56514970500
57205171587
57200197409
Author Affiliations: Thakur, L.S., Department of Chemical Engineering, Indian Institute of Technology Roorkee, Uttarakhand, India
Goyal, H., Department of Chemical Engineering, Indian Institute of Technology Roorkee, Uttarakhand, India
Mondal, P., Department of Chemical Engineering, Indian Institute of Technology Roorkee, Uttarakhand, India
Corresponding Author: Mondal, P.; Department of Chemical Engineering, Indian Institute of Technology RoorkeeIndia; email: pmondfch@iitr.ernet.in
Appears in Collections:Journal Publications [CH]

Files in This Item:
There are no files associated with this item.
Show full item record


Items in Repository are protected by copyright, with all rights reserved, unless otherwise indicated.