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Effect of Organic and Inorganic Acid Pretreatment on Structural Properties of Rice Husk and Adsorption Mechanism of Phenol

Rice husk treated with organic and inorganic acid was tested as a low cost adsorbent for the removal of phenol from artificial wastewater in batch adsorption procedure. The physical and surface properties of the developed adsorbents were characterized using FTIR and SEM. The efficiency of these adso...

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Main Authors: Samah B. , Daffalla, Mukhtar, Hilmi, Maizatul , S.Shaharun
Format: Conference or Workshop Item
Published: 2011
Subjects:
Q Science (General)
Online Access:http://www.warponline.org
http://eprints.utp.edu.my/7403/
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spelling my.utp.eprints.74032014-03-28T03:26:32Z Effect of Organic and Inorganic Acid Pretreatment on Structural Properties of Rice Husk and Adsorption Mechanism of Phenol Samah B. , Daffalla Mukhtar, Hilmi Maizatul , S.Shaharun Q Science (General) Rice husk treated with organic and inorganic acid was tested as a low cost adsorbent for the removal of phenol from artificial wastewater in batch adsorption procedure. The physical and surface properties of the developed adsorbents were characterized using FTIR and SEM. The efficiency of these adsorbents was evaluated by varying the adsorbent doses. A comparison of organic acid (citric acid) and inorganic acids (HCL, H2SO4 and HNO3) treatment show that rice husk treated with organic acid (a weak acid) has less removal efficiency compared to inorganic acid (stronger acid) treated rice husk. This is the result of the active sites produced by citric acid. In general, removal efficiency between 40.21-59.54%, 32.11-43.87%, 31.33-40.66% and 22.42-35.41% could be achieved after treating the rice husk with H2SO4, HCl, HNO3 and citric acid, respectively; in comparison to the raw rice husk which is able to achieve 18.61-28.94% removal efficiency after 72hrs.The kinetics of phenol adsorption is found to follow the pseudo-second-order kinetic model. FTIR analysis shows that the –OH, C-H, C≡C, C-C, C=O, -CO, Si-OH and –Si-H groups contribute to the adsorption of phenol onto the surface of adsorbent. 2011-12-21 Conference or Workshop Item PeerReviewed http://www.warponline.org Samah B. , Daffalla and Mukhtar, Hilmi and Maizatul , S.Shaharun (2011) Effect of Organic and Inorganic Acid Pretreatment on Structural Properties of Rice Husk and Adsorption Mechanism of Phenol. In: International Chemical and Environmental Engineering Conference, 21 - 23 December 2011, Hotel Concorde, Kuala Lumpur. http://eprints.utp.edu.my/7403/
institution Universiti Teknologi Petronas
building UTP Resource Centre
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Teknologi Petronas
content_source UTP Institutional Repository
url_provider http://eprints.utp.edu.my/
topic Q Science (General)
spellingShingle Q Science (General)
Samah B. , Daffalla
Mukhtar, Hilmi
Maizatul , S.Shaharun
Effect of Organic and Inorganic Acid Pretreatment on Structural Properties of Rice Husk and Adsorption Mechanism of Phenol
description Rice husk treated with organic and inorganic acid was tested as a low cost adsorbent for the removal of phenol from artificial wastewater in batch adsorption procedure. The physical and surface properties of the developed adsorbents were characterized using FTIR and SEM. The efficiency of these adsorbents was evaluated by varying the adsorbent doses. A comparison of organic acid (citric acid) and inorganic acids (HCL, H2SO4 and HNO3) treatment show that rice husk treated with organic acid (a weak acid) has less removal efficiency compared to inorganic acid (stronger acid) treated rice husk. This is the result of the active sites produced by citric acid. In general, removal efficiency between 40.21-59.54%, 32.11-43.87%, 31.33-40.66% and 22.42-35.41% could be achieved after treating the rice husk with H2SO4, HCl, HNO3 and citric acid, respectively; in comparison to the raw rice husk which is able to achieve 18.61-28.94% removal efficiency after 72hrs.The kinetics of phenol adsorption is found to follow the pseudo-second-order kinetic model. FTIR analysis shows that the –OH, C-H, C≡C, C-C, C=O, -CO, Si-OH and –Si-H groups contribute to the adsorption of phenol onto the surface of adsorbent.
format Conference or Workshop Item
author Samah B. , Daffalla
Mukhtar, Hilmi
Maizatul , S.Shaharun
author_facet Samah B. , Daffalla
Mukhtar, Hilmi
Maizatul , S.Shaharun
author_sort Samah B. , Daffalla
title Effect of Organic and Inorganic Acid Pretreatment on Structural Properties of Rice Husk and Adsorption Mechanism of Phenol
title_short Effect of Organic and Inorganic Acid Pretreatment on Structural Properties of Rice Husk and Adsorption Mechanism of Phenol
title_full Effect of Organic and Inorganic Acid Pretreatment on Structural Properties of Rice Husk and Adsorption Mechanism of Phenol
title_fullStr Effect of Organic and Inorganic Acid Pretreatment on Structural Properties of Rice Husk and Adsorption Mechanism of Phenol
title_full_unstemmed Effect of Organic and Inorganic Acid Pretreatment on Structural Properties of Rice Husk and Adsorption Mechanism of Phenol
title_sort effect of organic and inorganic acid pretreatment on structural properties of rice husk and adsorption mechanism of phenol
publishDate 2011
url http://www.warponline.org
http://eprints.utp.edu.my/7403/
_version_ 1738655573970255872
score 13.211869

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