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Optimization and activation of renewable durian husk for biosorption of lead(II) from an aqueous medium

Ngabura, Mohammed and Hussain, Siti Aslina and Ab Karim Ghani, Wan Azlina and Jami, Mohammed Saedi and Tan, Yen Ping (2019) Optimization and activation of renewable durian husk for biosorption of lead(II) from an aqueous medium. Journal of Chemical Technology & Biotechnology, 94 (5). pp. 1384-1396. ISSN 0268-2575 E-ISSN 1097-4660

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BACKGROUND:BiosorptionofleadPb(II)bydurianhuskactivatedcarbon(DHAC)wasinvestigated.Themainaimofthisworkis toexploretheeffectofoperatingvariablessuchaspH,biosorbentdose,temperature,initialmetalionconcentrationandcontact time on the removal of Pb(II) from synthesized aqueous medium using a response surface methodology (RSM) technique. The experimentationwasperformedintwosets,namelyset1andset2. RESULTS:Forexperimentalset1,pHwassetto7.0.Theoptimumconditionsfortheremainingparametersweredeterminedtobe 0.39gDHACdose,60mincontacttimeand100mgL−1 ofinitialmetalionconcentration,whichyieldedmaximumbiosorption capacity of 14.6mgg−1. For experimental set 2, 41.27∘C, 8.95 and 99.96mgL−1 were the optimum conditions determined for temperature, pH and initial Pb(II) concentration, respectively; which revealed a maximum adsorption capacity of 9.67mgg−1. Characterizationoftheadsorbentrevealedactivefunctionalgroupssuchashydroxyl,carboxylic,alcoholandhemicellulose.The equilibriumadsorptiondataobeyedtheLangmuirisothermandpseudo-second-orderkineticmodelswithmaximumLangmuir uptakeof36.1mgg−1. CONCLUSIONS: The biosorbent was capable of reuse, so that the abundant durian husk could be utilized effectively for the removalofPb(II)frompollutedwater.

Item Type: Article (Journal)
Additional Information: 5545/69546
Uncontrolled Keywords: lead (II) biosorption; Durian husk; Activated carbon; Optimization; Wastewater
Subjects: T Technology > TP Chemical technology > TP155 Chemical engineering
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button): Kulliyyah of Engineering
Kulliyyah of Engineering > Department of Biotechnology Engineering
Depositing User: Prof. Ir. Dr. Mohammed Saedi Jami, PhD CEng MIChemE
Date Deposited: 29 Jan 2019 10:49
Last Modified: 31 Jul 2019 11:16
URI: http://irep.iium.edu.my/id/eprint/69546

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