Adsorption of Cr (VI) pollutants in water using natural and modified attapulgite clay

dc.contributor.authorTichapondwa, Shepherd Masimba
dc.contributor.emailshepherd.tichapondwa@up.ac.zaen_ZA
dc.date.accessioned2020-07-22T10:48:01Z
dc.date.available2020-07-22T10:48:01Z
dc.date.issued2019
dc.description.abstractAttapulgite clay also known as palygorskite is a mineral clay which possess good adsorption properties based on its adsorption capacity, porous structure and moderate cation exchange properties. The study investigated the effectiveness of naturally occurring and hydrochloric acid modified attapulgite as adsorbents for Cr (VI) remediation in wastewater. The physical properties of the clay were characterized using a range of techniques. X-ray diffraction confirmed the purity of the clay while BET analysis indicated an increase in surface area from 131.4 to 183.2 m2/g after acid modification. The modified attapulgite was predicted to have an adsorption capacity of 75 mg/g compared to 2.1 mg/g for the naturally occurring attapulgite. The increase in adsorption capacity was attributed to a change in surface area as well as changes in the surface chemistry of the clay. The adsorption isotherms were best described by the Langmuir mono-layer adsorption model while the kinetics fit the Langren first order kinetics model.en_ZA
dc.description.departmentChemical Engineeringen_ZA
dc.description.librarianam2020en_ZA
dc.description.urihttp://www.aidic.it/ceten_ZA
dc.identifier.citationTichapondwa S., Van Biljon J., 2019, Adsorption of Cr (vi) Pollutants in Water Using Natural and Modified Attapulgite Clay, Chemical Engineering Transactions, 74, 355-360 DOI: 10.3303/CET1974060.en_ZA
dc.identifier.isbn978-88-95608-71-6
dc.identifier.issn2283-9216 (online)
dc.identifier.other10.3303/CET1974060
dc.identifier.urihttp://hdl.handle.net/2263/75371
dc.language.isoenen_ZA
dc.publisherThe Italian Association of Chemical Engineeringen_ZA
dc.rights© 2019, AIDIC Servizi S.r.l.en_ZA
dc.subjectAttapulgite clayen_ZA
dc.subjectMineral clayen_ZA
dc.subjectWastewateren_ZA
dc.subjectBETen_ZA
dc.titleAdsorption of Cr (VI) pollutants in water using natural and modified attapulgite clayen_ZA
dc.typeArticleen_ZA

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