Optimization and activation of renewable durian husk for biosorption of lead(II) from an aqueous medium
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 sur...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English English English |
| Published: |
John Wiley and Sons Ltd
2019
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| Subjects: | |
| Online Access: | http://irep.iium.edu.my/69546/ http://irep.iium.edu.my/69546/ http://irep.iium.edu.my/69546/ http://irep.iium.edu.my/69546/1/69546_Optimization%20and%20activation%20of%20renewable_article.pdf http://irep.iium.edu.my/69546/2/69546_Optimization%20and%20activation%20of%20renewable_scopus.pdf http://irep.iium.edu.my/69546/13/69546_Optimization%20and%20activation%20of%20renewable%20durian%20husk%20for%20biosorption%20of%20lead%20%28II%29%20from%20an%20aqueous%20medium_wos.pdf |
| Summary: | 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. |
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