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A comparative evaluation on the oxidate approaches for extraction of humic acods from low-grade coals

Nowadays, the importance of humic acids as soil fertili zer is fundamental for agriculture cOllll11unity The ox idation approach with nitric acid was evidenced to increase the yield of humic acids extracted from low-rank coal. However, nitric acid is <1 very expensive item and therefore not cosH:...

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Main Author: Norrafidah, Binti Majri.
Format: Final Year Project Report
Language:English
Published: Universiti Malaysia Sarawak (UNIMAS) 2006
Subjects:
QD Chemistry
Online Access:http://ir.unimas.my/id/eprint/19886/3/Norrafidah%20%20ft.pdf
http://ir.unimas.my/id/eprint/19886/
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spelling my.unimas.ir.198862024-01-22T01:45:51Z http://ir.unimas.my/id/eprint/19886/ A comparative evaluation on the oxidate approaches for extraction of humic acods from low-grade coals Norrafidah, Binti Majri. QD Chemistry Nowadays, the importance of humic acids as soil fertili zer is fundamental for agriculture cOllll11unity The ox idation approach with nitric acid was evidenced to increase the yield of humic acids extracted from low-rank coal. However, nitric acid is <1 very expensive item and therefore not cosH:fkctive especially in producing humic acids at large scale. In this study, hydrogen peroxide (H~O~) and alkaline potassium pcrmanganate (KMnO.1) were chosen as olher oxidizing age nts to rt'generate the humic acids from low rank coal. 'J he yields, chemical <lIld spectroscopical characteristics of the humic acids extracted were evaluated. The results showed that regenerated coal I 0% H~O~ produced an average of 86% humic acids, however, the severe loss weight of coal upon ox idation render this approach unfavourable. Oxidation with KMnO.1 conversely did not show any improvement in terms of the yield: hence it is not a favourable approach in prod ucing humic acids. Universiti Malaysia Sarawak (UNIMAS) 2006 Final Year Project Report NonPeerReviewed text en http://ir.unimas.my/id/eprint/19886/3/Norrafidah%20%20ft.pdf Norrafidah, Binti Majri. (2006) A comparative evaluation on the oxidate approaches for extraction of humic acods from low-grade coals. [Final Year Project Report] (Unpublished)
institution Universiti Malaysia Sarawak
building Centre for Academic Information Services (CAIS)
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Malaysia Sarawak
content_source UNIMAS Institutional Repository
url_provider http://ir.unimas.my/
language English
topic QD Chemistry
spellingShingle QD Chemistry
Norrafidah, Binti Majri.
A comparative evaluation on the oxidate approaches for extraction of humic acods from low-grade coals
description Nowadays, the importance of humic acids as soil fertili zer is fundamental for agriculture cOllll11unity The ox idation approach with nitric acid was evidenced to increase the yield of humic acids extracted from low-rank coal. However, nitric acid is <1 very expensive item and therefore not cosH:fkctive especially in producing humic acids at large scale. In this study, hydrogen peroxide (H~O~) and alkaline potassium pcrmanganate (KMnO.1) were chosen as olher oxidizing age nts to rt'generate the humic acids from low rank coal. 'J he yields, chemical <lIld spectroscopical characteristics of the humic acids extracted were evaluated. The results showed that regenerated coal I 0% H~O~ produced an average of 86% humic acids, however, the severe loss weight of coal upon ox idation render this approach unfavourable. Oxidation with KMnO.1 conversely did not show any improvement in terms of the yield: hence it is not a favourable approach in prod ucing humic acids.
format Final Year Project Report
author Norrafidah, Binti Majri.
author_facet Norrafidah, Binti Majri.
author_sort Norrafidah, Binti Majri.
title A comparative evaluation on the oxidate approaches for extraction of humic acods from low-grade coals
title_short A comparative evaluation on the oxidate approaches for extraction of humic acods from low-grade coals
title_full A comparative evaluation on the oxidate approaches for extraction of humic acods from low-grade coals
title_fullStr A comparative evaluation on the oxidate approaches for extraction of humic acods from low-grade coals
title_full_unstemmed A comparative evaluation on the oxidate approaches for extraction of humic acods from low-grade coals
title_sort comparative evaluation on the oxidate approaches for extraction of humic acods from low-grade coals
publisher Universiti Malaysia Sarawak (UNIMAS)
publishDate 2006
url http://ir.unimas.my/id/eprint/19886/3/Norrafidah%20%20ft.pdf
http://ir.unimas.my/id/eprint/19886/
_version_ 1789430288064970752
score 13.244413

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