Evaluation of arsenic removal potential of few indigenous materials through batch study
2012 (English)In: Understanding the Geological and Medical Interface of Arsenic, As 2012 - 4th International Congress: Arsenic in the Environment, 2012, 289-290 p.Conference paper (Refereed)
Adsorption potential and characteristics of the four different indigenous materials i.e. Naturally Oxidized Iron Scrap (NOIS) sand, red soil and murum, (a type of lateritic soil which is a mix of finer and coarser grained sized particle and available in some parts of eastern India; for experimental purpose the coarser particles were used) were investigated with different operating parameters like pH, contact time, temperature, adsorbent dose and initial arsenic concentration in batch mode. From the pH study, it was found that the adsorbents were efficient in adsorbing Arsenic (As) in acidic media. Adsorption kinetics of arsenic sorption on the selected adsorbents followed Lagergren pseudo second order reaction model. The thermodynamic study evaluated that the adsorption processes of all adsorbents were exothermic in nature. The experimental equilibrium data obtained were applied to several isotherm models. Results revealed that the Freundlich isotherm was the best-fit model. The maximum adsorption capacity (q m) was found to be highest for NOIS [156 %mu;g/g for As (III) and 245 %mu;g/g for As (V)]. The batch studies ensured that the NOIS can be used as a promising adsorbent for arsenic remediation in developing indigenous treatment technologies.
Place, publisher, year, edition, pages
2012. 289-290 p.
Earth and Related Environmental Sciences
IdentifiersURN: urn:nbn:se:kth:diva-101372ScopusID: 2-s2.0-84864887745ISBN: 978-041563763-3OAI: oai:DiVA.org:kth-101372DiVA: diva2:547417
4th International Congress on Arsenic in the Environment, As 2012;Cairns, QLD; 22 July 2012 through 27 July 2012
QC 201208282012-08-282012-08-272012-08-28Bibliographically approved