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Studies of Zn(II) Ions Adsorption By Rice Husks Digested With Nitric Acid

Rice husks are one of the agro residues which are available from mills in relatively dry form. It is a carbonaceous material and abundantly available especially in Malaysia. Therefore it is an innovative step to convert this abundantly renewable source into fully utilization. This particular rese...

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Main Author: Singgar, Diana
Format: Final Year Project
Language:English
Published: Universiti Teknologi Petronas 2005
Subjects:
TP Chemical technology
Online Access:http://utpedia.utp.edu.my/8175/1/2005%20Bachelor%20-%20Studies%20On%20Zn%20%28II%29%20Ion%20Adsorption%20By%20Rice%20Husks%20Digested%20With%20Nitric%20Acid.pdf
http://utpedia.utp.edu.my/8175/
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spelling my-utp-utpedia.81752017-01-25T09:46:41Z http://utpedia.utp.edu.my/8175/ Studies of Zn(II) Ions Adsorption By Rice Husks Digested With Nitric Acid Singgar, Diana TP Chemical technology Rice husks are one of the agro residues which are available from mills in relatively dry form. It is a carbonaceous material and abundantly available especially in Malaysia. Therefore it is an innovative step to convert this abundantly renewable source into fully utilization. This particular research studies will demonstrate the adsorption capacity of Zn(II) ions in solution using activated carbon produced from rice husk. The adsorption capacity of activated carbon is not only determined by their physical or porous structure but also strongly influenced by the chemical structure of their surface. The usage of nitric acid is imposed to oxidize the rice husk hence extended its surface acidity. Surface acidity is categorized as the chemical structure that influences the carbon interaction with polar and non-polar adsorbates, which is, in this case is Zn(II) ion. Specifically, there are two main experiment to be conducted prior to the research studies which are; formation of activated carbon under the various experimental condition and the analytical studies of the adsorption capacity using Atomic Absorption Spectrophotometer (AAS). Carbons which have equal surface area but prepared by different methods or given different activation treatments show markedly different adsorption characteristics. This particular research project will demonstrate the effect of three variations of experimental conditions which are; weight ratio of Nitric acid to rice husks, shaker speed and contact time and finally carbonization time. From the experiment, it was found that the maximum yield of activated carbon was obtained from rice husks subjected to acid digestion of weight ratio of 2, carbonization period of 0.5 hours and final heat temperature of 500°C. As for the adsorption properties, the rice husks subjected to treatment at the weight ratio of 2, carbonization period of 3 hours and temperature of 500°C displayed the best adsorption tendencytowards Zn(II) ions. Universiti Teknologi Petronas 2005-01 Final Year Project NonPeerReviewed application/pdf en http://utpedia.utp.edu.my/8175/1/2005%20Bachelor%20-%20Studies%20On%20Zn%20%28II%29%20Ion%20Adsorption%20By%20Rice%20Husks%20Digested%20With%20Nitric%20Acid.pdf Singgar, Diana (2005) Studies of Zn(II) Ions Adsorption By Rice Husks Digested With Nitric Acid. Universiti Teknologi Petronas. (Unpublished)
institution Universiti Teknologi Petronas
building UTP Resource Centre
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Teknologi Petronas
content_source UTP Electronic and Digitized Intellectual Asset
url_provider http://utpedia.utp.edu.my/
language English
topic TP Chemical technology
spellingShingle TP Chemical technology
Singgar, Diana
Studies of Zn(II) Ions Adsorption By Rice Husks Digested With Nitric Acid
description Rice husks are one of the agro residues which are available from mills in relatively dry form. It is a carbonaceous material and abundantly available especially in Malaysia. Therefore it is an innovative step to convert this abundantly renewable source into fully utilization. This particular research studies will demonstrate the adsorption capacity of Zn(II) ions in solution using activated carbon produced from rice husk. The adsorption capacity of activated carbon is not only determined by their physical or porous structure but also strongly influenced by the chemical structure of their surface. The usage of nitric acid is imposed to oxidize the rice husk hence extended its surface acidity. Surface acidity is categorized as the chemical structure that influences the carbon interaction with polar and non-polar adsorbates, which is, in this case is Zn(II) ion. Specifically, there are two main experiment to be conducted prior to the research studies which are; formation of activated carbon under the various experimental condition and the analytical studies of the adsorption capacity using Atomic Absorption Spectrophotometer (AAS). Carbons which have equal surface area but prepared by different methods or given different activation treatments show markedly different adsorption characteristics. This particular research project will demonstrate the effect of three variations of experimental conditions which are; weight ratio of Nitric acid to rice husks, shaker speed and contact time and finally carbonization time. From the experiment, it was found that the maximum yield of activated carbon was obtained from rice husks subjected to acid digestion of weight ratio of 2, carbonization period of 0.5 hours and final heat temperature of 500°C. As for the adsorption properties, the rice husks subjected to treatment at the weight ratio of 2, carbonization period of 3 hours and temperature of 500°C displayed the best adsorption tendencytowards Zn(II) ions.
format Final Year Project
author Singgar, Diana
author_facet Singgar, Diana
author_sort Singgar, Diana
title Studies of Zn(II) Ions Adsorption By Rice Husks Digested With Nitric Acid
title_short Studies of Zn(II) Ions Adsorption By Rice Husks Digested With Nitric Acid
title_full Studies of Zn(II) Ions Adsorption By Rice Husks Digested With Nitric Acid
title_fullStr Studies of Zn(II) Ions Adsorption By Rice Husks Digested With Nitric Acid
title_full_unstemmed Studies of Zn(II) Ions Adsorption By Rice Husks Digested With Nitric Acid
title_sort studies of zn(ii) ions adsorption by rice husks digested with nitric acid
publisher Universiti Teknologi Petronas
publishDate 2005
url http://utpedia.utp.edu.my/8175/1/2005%20Bachelor%20-%20Studies%20On%20Zn%20%28II%29%20Ion%20Adsorption%20By%20Rice%20Husks%20Digested%20With%20Nitric%20Acid.pdf
http://utpedia.utp.edu.my/8175/
_version_ 1739831546216448000
score 13.211869

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