Copper scavenging efficiency of adsorbents prepared from Raphia hookeri fruit waste

INYINBOR, A.A and Adekola, F.O. and Olatunji, Gabriel Ademola (2019) Copper scavenging efficiency of adsorbents prepared from Raphia hookeri fruit waste. Sustainable Chemistry and Pharmacy, 12. ISSN 2352-5541

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Abstract

LowcostadsorbentspreparedfromtheepicarpofRaphiahookerifruitwereusedfortheremovalofcopper(II)ionfromaqueoussolution.TheeffectsofoperationalparameterssuchaspH,concentrationandcontacttime,dosageaswellasinterferenceofotherionswerestudied.OptimumpHforrawandmodifiedbiomasswere5.0and5.5withpercentageremovalof75.08%and95.62%respectively.ConcentrationofcompetingionsgreatlyreducedCu2+removalwithbothadsorbentswhileagitationspeedhadnegligibleeffectonCu2+uptake. Adsorbentssurfaceswereactivatedas temperatureincreasedthusenhancingadsorbentadsorptioncapacityathightemperature.Adsorptionkineticdatafittedbestintothepseudosecondordermodelwhilethe thermodynamics studies confirmed adsorption spontaneity and feasibility. The Freundlich adsorptionisothermbestdescribedtheadsorptionprocessandtheLangmuirmaximummonolayeradsorptioncapacityfor the raw (RHE) and acid treated (ARHE) biomass were 81.97 and 103.09mg/g respectively.ChemisorptionpredominatetheCu2+-ARHEsystemhencedesorptionefficiencywasobtainedtobe72.65%with CH3COOH as eluen

Item Type:	Article
Subjects:	Q Science > QD Chemistry
Depositing User:	Mr DIGITAL CONTENT CREATOR LMU
Date Deposited:	30 Sep 2019 10:01
Last Modified:	30 Sep 2019 10:01
URI:	https://eprints.lmu.edu.ng/id/eprint/2449

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