Removal of Arsenic (V) in Water using Humic Acid-Modified Meetiyagoda Kaolinite

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dc.contributor.authorJayahansani, K.H.D.
dc.contributor.authorUdagedra, D.T.
dc.contributor.authorWeerasooriya, R.
dc.date.accessioned2022-03-11T09:00:55Z
dc.date.available2022-03-11T09:00:55Z
dc.date.issued2013
dc.description.abstractKaolinite is one of the major clay types which can be used to remove ions from the water by using its adsorption capacity (Krishna and Gupta, 2006). Though several clay types are found in Sri Lanka, significant use of them for value addition purposes is not practiced.By considering that fact and the unique ability of kaolinite to remove ions from water is targeted throughout this research.Meetiyagoda kaolinite is used as clay type, because it is currently used only as a raw material for ceramic industry and none of the researches have been conducted to investigate its ability to remove ions from water. Therefore the ultimate goal of this study is to fill that gap and develop a value added product from Meetiyagodakaolonite. This research focuses on removing arsenic (V) from water while modifying kaolinite surface using Humic Acid in order to enhance its adsorption capacity and measuring the removal amount of arsenic (V) by changing amount of clay, concentration of arsenic (V) and pH. Methodology The purified Meetiyagoda kaolinite sample was taken from Meetiyagoda clay refinery and it was dried, ground and sieved to obtain 75µmparticle size.This particle size was preferred because, when particle size gets smallest it increases the surface area of kaolinite which results in more adsorption of arsenic on to kaolinite surface. Humic acid was prepared by mixing dried homo-ionized clay was prepared using kaolinite and 1M CaCl2.Previously prepared humic acid was readjusted to homo-ionized clay was added to pH neutral humic acid and the humic acid-clay suspension was incubated in mechanical shaker, then the suspension was centrifuged. Finally the humic acid coated clay sample was dried and used. The effect of arsenic removal by humic acid modified Meetiyagoda kaolinite was analysed while changing amount of humic acid modified clay, initial arsenic concentration and pH of the solution using Varian 700ES ICP-OES Atomic Absorption Spcetrophotometer.en_US
dc.identifier.urihttp://www.erepo.lib.uwu.ac.lk/bitstream/handle/123456789/8492/40-MRT-Removal%20of%20Arsenic%20%28V%29%20in%20Water%20using%20Humic%20Acid-Modified%20Meetiyagoda%20.pdf?sequence=1&isAllowed=y
dc.language.isoenen_US
dc.publisherUva Wellassa University of Sri Lankaen_US
dc.subjectMineral Sciencesen_US
dc.subjectMineralen_US
dc.subjectScience and Technologyen_US
dc.subjectSoil Scienceen_US
dc.subjectWaste Water Treatmenten_US
dc.titleRemoval of Arsenic (V) in Water using Humic Acid-Modified Meetiyagoda Kaoliniteen_US
dc.title.alternativeResearch Symposium 2013en_US
dc.typeOtheren_US
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