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Adsorption of copper(ii) and lead(ii) ions from aqueous solutions by unmodified oil palm shell

Heavy metals can cause poisoning in living organisms. One of the treatment methods that is economical and environmentally friendly is by adsorption. In this study, the characteristics of adsorbent prepared from spent oil palm shell was analysed and the adsorbent was used for adsorption of Cu(II) and...

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Main Author: Chia, Pui San
Format: Thesis
Language:English
English
Published: 2012
Subjects:
TD419-428 Water pollution
Online Access:https://eprints.ums.edu.my/id/eprint/42815/1/24%20PAGES.pdf
https://eprints.ums.edu.my/id/eprint/42815/2/FULLTEXT.pdf
https://eprints.ums.edu.my/id/eprint/42815/
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spelling my.ums.eprints.428152025-02-17T06:55:22Z https://eprints.ums.edu.my/id/eprint/42815/ Adsorption of copper(ii) and lead(ii) ions from aqueous solutions by unmodified oil palm shell Chia, Pui San TD419-428 Water pollution Heavy metals can cause poisoning in living organisms. One of the treatment methods that is economical and environmentally friendly is by adsorption. In this study, the characteristics of adsorbent prepared from spent oil palm shell was analysed and the adsorbent was used for adsorption of Cu(II) and Pb(II) ions. Experiments were conducted through batch adsorption experiments technique to assess the effect of particle size, contact time, agitation rate, dosage, initial adsorbate concentration and initial pH. The residual Cu(II) and Pb(II) ions were detected using atomic absorption spectrometer. The oil palm shell were sieved into various sizes with 27.47% of particles were size 8 < c E 10 mm, 23.26% of particles with size 10 < c E 13 mm and 21.96% with size 6.5 < c E 8 mm. The distribution of oil palm shell particles has uniformity coefficient of less than three indicating potential as filter bed material from hydraulic point of view. Adsorption of Cu(II) and Pb(II) ions could occur in absence of agitation, fulfilling the criteria as filter bed material for slow water feeding system. The pHpzc was found to be at pH 4.1 with maximum adsorption occurred between pH 4.1 to pH 6. Adsorption equilibrium was achieved in 480 min in 150 rpm agitation. Adsorption capacity was enhanced with smaller particle size, lower dosage and higher initial adsorbate concentration. Adsorption isotherms were modeled using Langmuir and Freundlich models and Freundlich model fitted the adsorption data well. This suggested multilayer adsorption manner. The maximum adsorption capacity was found to be 1.76 and 3.39 mg/g for Cu(II) and Pb(II) ions, respectively. Four kinetic models employed in this study were intraparticle diffusion model, expression of Boyd, pseudo-first-order model and pseudo-second-order models. The adsorption data fitted into pseudo-second-order model suggesting occurrence of chemisorption. The results showed that oil palm shell is a potential adsorbent for Cu(II) and Pb(II) ions. 2012 Thesis NonPeerReviewed text en https://eprints.ums.edu.my/id/eprint/42815/1/24%20PAGES.pdf text en https://eprints.ums.edu.my/id/eprint/42815/2/FULLTEXT.pdf Chia, Pui San (2012) Adsorption of copper(ii) and lead(ii) ions from aqueous solutions by unmodified oil palm shell. Masters thesis, Universiti Malaysia Sabah.
institution Universiti Malaysia Sabah
building UMS Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Malaysia Sabah
content_source UMS Institutional Repository
url_provider http://eprints.ums.edu.my/
language English
English
topic TD419-428 Water pollution
spellingShingle TD419-428 Water pollution
Chia, Pui San
Adsorption of copper(ii) and lead(ii) ions from aqueous solutions by unmodified oil palm shell
description Heavy metals can cause poisoning in living organisms. One of the treatment methods that is economical and environmentally friendly is by adsorption. In this study, the characteristics of adsorbent prepared from spent oil palm shell was analysed and the adsorbent was used for adsorption of Cu(II) and Pb(II) ions. Experiments were conducted through batch adsorption experiments technique to assess the effect of particle size, contact time, agitation rate, dosage, initial adsorbate concentration and initial pH. The residual Cu(II) and Pb(II) ions were detected using atomic absorption spectrometer. The oil palm shell were sieved into various sizes with 27.47% of particles were size 8 < c E 10 mm, 23.26% of particles with size 10 < c E 13 mm and 21.96% with size 6.5 < c E 8 mm. The distribution of oil palm shell particles has uniformity coefficient of less than three indicating potential as filter bed material from hydraulic point of view. Adsorption of Cu(II) and Pb(II) ions could occur in absence of agitation, fulfilling the criteria as filter bed material for slow water feeding system. The pHpzc was found to be at pH 4.1 with maximum adsorption occurred between pH 4.1 to pH 6. Adsorption equilibrium was achieved in 480 min in 150 rpm agitation. Adsorption capacity was enhanced with smaller particle size, lower dosage and higher initial adsorbate concentration. Adsorption isotherms were modeled using Langmuir and Freundlich models and Freundlich model fitted the adsorption data well. This suggested multilayer adsorption manner. The maximum adsorption capacity was found to be 1.76 and 3.39 mg/g for Cu(II) and Pb(II) ions, respectively. Four kinetic models employed in this study were intraparticle diffusion model, expression of Boyd, pseudo-first-order model and pseudo-second-order models. The adsorption data fitted into pseudo-second-order model suggesting occurrence of chemisorption. The results showed that oil palm shell is a potential adsorbent for Cu(II) and Pb(II) ions.
format Thesis
author Chia, Pui San
author_facet Chia, Pui San
author_sort Chia, Pui San
title Adsorption of copper(ii) and lead(ii) ions from aqueous solutions by unmodified oil palm shell
title_short Adsorption of copper(ii) and lead(ii) ions from aqueous solutions by unmodified oil palm shell
title_full Adsorption of copper(ii) and lead(ii) ions from aqueous solutions by unmodified oil palm shell
title_fullStr Adsorption of copper(ii) and lead(ii) ions from aqueous solutions by unmodified oil palm shell
title_full_unstemmed Adsorption of copper(ii) and lead(ii) ions from aqueous solutions by unmodified oil palm shell
title_sort adsorption of copper(ii) and lead(ii) ions from aqueous solutions by unmodified oil palm shell
publishDate 2012
url https://eprints.ums.edu.my/id/eprint/42815/1/24%20PAGES.pdf
https://eprints.ums.edu.my/id/eprint/42815/2/FULLTEXT.pdf
https://eprints.ums.edu.my/id/eprint/42815/
_version_ 1825161825019232256
score 13.244413

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