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Characterization of freeze dried and oven dried nitrohumic acids derived from the Mukah coal, Sarawak

Alkaline extraction was used to extract humic acids from Mukah coal. The alkaline solution used to perform this extraction is potassium hydroxide, KOH. Humic acids were extracted via oven-drying and freeze-drying approach. The characterization of oven-dried humic acids and freeze-dried humic acids...

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Main Author: Stephanie, anak Nawang Gayet
Format: Final Year Project Report
Language:English
Published: Universiti Malaysia Sarawak, UNIMAS 2007
Subjects:
QC Physics
QD Chemistry
Online Access:http://ir.unimas.my/id/eprint/7833/4/Stephanie%20anak%20Nawang%20%28full%20text%29.pdf
http://ir.unimas.my/id/eprint/7833/
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spelling my.unimas.ir.78332024-03-05T08:45:53Z http://ir.unimas.my/id/eprint/7833/ Characterization of freeze dried and oven dried nitrohumic acids derived from the Mukah coal, Sarawak Stephanie, anak Nawang Gayet QC Physics QD Chemistry Alkaline extraction was used to extract humic acids from Mukah coal. The alkaline solution used to perform this extraction is potassium hydroxide, KOH. Humic acids were extracted via oven-drying and freeze-drying approach. The characterization of oven-dried humic acids and freeze-dried humic acids was conducted by measuring moisture content, ash content, carboxyl group (-COOH), total acidity (COOH phenolic- and/or enolic –OH) and phenolic (-OH). The spectroscopic characterization for both humic acids was done by using FTIR spectroscopy, Scanning Electron Microscopy (SEM) and UV/VIS spectrophotometer. Factorial design was also conducted to determine the factors (temperature, time and concentration) that will affect the yield of humic acids. The study showed that high concentration of alkaline solution (KOH) will give rise to high yield of humic acids. The results of statistical analysis (Paired t-test) show that there was no significant difference in the characteristics between them except for E4/E6 ratio. Universiti Malaysia Sarawak, UNIMAS 2007 Final Year Project Report NonPeerReviewed text en http://ir.unimas.my/id/eprint/7833/4/Stephanie%20anak%20Nawang%20%28full%20text%29.pdf Stephanie, anak Nawang Gayet (2007) Characterization of freeze dried and oven dried nitrohumic acids derived from the Mukah coal, Sarawak. [Final Year Project Report] (Unpublished)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 QC Physics
QD Chemistry
spellingShingle QC Physics
QD Chemistry
Stephanie, anak Nawang Gayet
Characterization of freeze dried and oven dried nitrohumic acids derived from the Mukah coal, Sarawak
description Alkaline extraction was used to extract humic acids from Mukah coal. The alkaline solution used to perform this extraction is potassium hydroxide, KOH. Humic acids were extracted via oven-drying and freeze-drying approach. The characterization of oven-dried humic acids and freeze-dried humic acids was conducted by measuring moisture content, ash content, carboxyl group (-COOH), total acidity (COOH phenolic- and/or enolic –OH) and phenolic (-OH). The spectroscopic characterization for both humic acids was done by using FTIR spectroscopy, Scanning Electron Microscopy (SEM) and UV/VIS spectrophotometer. Factorial design was also conducted to determine the factors (temperature, time and concentration) that will affect the yield of humic acids. The study showed that high concentration of alkaline solution (KOH) will give rise to high yield of humic acids. The results of statistical analysis (Paired t-test) show that there was no significant difference in the characteristics between them except for E4/E6 ratio.
format Final Year Project Report
author Stephanie, anak Nawang Gayet
author_facet Stephanie, anak Nawang Gayet
author_sort Stephanie, anak Nawang Gayet
title Characterization of freeze dried and oven dried nitrohumic acids derived from the Mukah coal, Sarawak
title_short Characterization of freeze dried and oven dried nitrohumic acids derived from the Mukah coal, Sarawak
title_full Characterization of freeze dried and oven dried nitrohumic acids derived from the Mukah coal, Sarawak
title_fullStr Characterization of freeze dried and oven dried nitrohumic acids derived from the Mukah coal, Sarawak
title_full_unstemmed Characterization of freeze dried and oven dried nitrohumic acids derived from the Mukah coal, Sarawak
title_sort characterization of freeze dried and oven dried nitrohumic acids derived from the mukah coal, sarawak
publisher Universiti Malaysia Sarawak, UNIMAS
publishDate 2007
url http://ir.unimas.my/id/eprint/7833/4/Stephanie%20anak%20Nawang%20%28full%20text%29.pdf
http://ir.unimas.my/id/eprint/7833/
_version_ 1793163047366295552
score 13.211869

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