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Removal of fluoride from aqueous solution and groundwater by wheat straw, sawdust and activated bagasse carbon of sugarcane
journal contribution
posted on 2023-05-18, 03:36 authored by Yadav, AK, Rouzbeh Abbassi, Gupta, A, Dadashzadeh, MThe aim of this research work is to design and develop a novel cost effective strategy for fluoride removal, applicable to rural areas of developing countries. Most of the adsorbents based technologies for fluoride removal works at acidic pH which is not feasible condition for application to rural areas. This study investigates the feasibility of three low-cost agricultural biomass based adsorbents namely: activated bagasse carbon (ABC), sawdust raw (SDR), and wheat straw raw (WSR) for water defluoridation, at neutral PH range. Performance of these adsorbents was compared with commercially available activated carbon (CAC). The CAC, ABC, SDR, and WSR removed 57.6, 56.4, 49.8 and 40.2% respectively from an aqueous solution of 5mgL-1 fluoride at pH 6.0, with the contact period of 60min and a dose of 4gL-1. All adsorption experimental data followed the Freundlich isotherm. The adsorption kinetic was also studied in terms of pseudo-first-order, pseudo-second-order and intraparticle diffusion models. Mechanism of fluoride removal was found to be complex. In addition, both surface adsorption and intra-particle diffusion contribute to the rate determining step. An updated list of biomass based adsorbents reported in scientific literatures was prepared and compared with adsorbents used in this study. © 2012 Elsevier B.V.
History
Publication title
Ecological EngineeringVolume
52Pagination
211-218ISSN
0925-8574Department/School
Australian Maritime CollegePublisher
Elsevier Science BvPlace of publication
Po Box 211, Amsterdam, Netherlands, 1000 AeRights statement
Copyright 2012 Elsevier B.V.Repository Status
- Restricted