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Enhance desilication and delignification in paddy straw via chemical and physical pretreatment

Paddy straw is one of the most common agricultural wastes and renewable resources available in Malaysia containing lignocellulosic values. Large parts of these plant materials are made up of complex carbohydrates such as cellulose and hemicelluloses which can be converted to fermentable sugars. In f...

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Main Authors: Mohd Ghazali, Mona Fatin Syazwanee, Ahmad Adli, Azleen, Abd Aziz, Nor Azwady, Mohd Zainudin, Nur Ain Izzati, Mustafa, Muskhazli
Format: Conference or Workshop Item
Language:English
Published: Department of Biology, Faculty of Science, Universiti Putra Malaysia 2016
Online Access:http://psasir.upm.edu.my/id/eprint/77509/1/i-SIMBIOMAS%202016%2046.pdf
http://psasir.upm.edu.my/id/eprint/77509/
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spelling my.upm.eprints.775092020-04-15T16:43:07Z http://psasir.upm.edu.my/id/eprint/77509/ Enhance desilication and delignification in paddy straw via chemical and physical pretreatment Mohd Ghazali, Mona Fatin Syazwanee Ahmad Adli, Azleen Abd Aziz, Nor Azwady Mohd Zainudin, Nur Ain Izzati Mustafa, Muskhazli Paddy straw is one of the most common agricultural wastes and renewable resources available in Malaysia containing lignocellulosic values. Large parts of these plant materials are made up of complex carbohydrates such as cellulose and hemicelluloses which can be converted to fermentable sugars. In fermentation process of sugars, ethanol can be produce as by-product with the help of aerobic microorganism. However, the presence of high ash and silica content in paddy straw makes it an inferior feedstock for ethanol production. The objective of this study is set to determine the best physical and chemical pretreatment for desilication of paddy straw and encouraged delignification process. The pretreatment comprises the combination of physical and chemical treatments to maximize the process of desilication and delignification in the paddy straw. Physical treatment begins with paddy straws cut and grind to three different sizes which were 2 mm, 5 mm and 8 mm. All different sizes of paddy straw was (i) autoclave, (ii) boiled and (iii) soaked in four different concentrations (0.5%, 1%, 2% and 5%) of nitric acid and sodium hydroxide, respectively for chemical treatment. With the comparison on dry matter basis to untreated paddy straw, 5mm paddy straw pretreated with 0.5% nitric acid showed the highest cellulose content (96.6%). Through this combination, the cellulose fragment was improved by 54% but the lignin and hemicellulose were reduce to 38% and 54%, compared to untreated paddy straw, respectively. The percentage of ash content in acid treatment have total increment of 56% compared to untreated samples content while the percentage of ash content for alkali treatment have total loss of 55% and reduced compared to untreated samples. Therefore, 0.5% nitric acid was found to be the most suitable condition to break the cellulose-lignin complex. Department of Biology, Faculty of Science, Universiti Putra Malaysia 2016 Conference or Workshop Item PeerReviewed text en http://psasir.upm.edu.my/id/eprint/77509/1/i-SIMBIOMAS%202016%2046.pdf Mohd Ghazali, Mona Fatin Syazwanee and Ahmad Adli, Azleen and Abd Aziz, Nor Azwady and Mohd Zainudin, Nur Ain Izzati and Mustafa, Muskhazli (2016) Enhance desilication and delignification in paddy straw via chemical and physical pretreatment. In: Malaysia International Biology Symposium 2016, 26-27 Oct. 2016, PICC, Putrajaya, Malaysia. (p. 46).
institution Universiti Putra Malaysia
building UPM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Putra Malaysia
content_source UPM Institutional Repository
url_provider http://psasir.upm.edu.my/
language English
description Paddy straw is one of the most common agricultural wastes and renewable resources available in Malaysia containing lignocellulosic values. Large parts of these plant materials are made up of complex carbohydrates such as cellulose and hemicelluloses which can be converted to fermentable sugars. In fermentation process of sugars, ethanol can be produce as by-product with the help of aerobic microorganism. However, the presence of high ash and silica content in paddy straw makes it an inferior feedstock for ethanol production. The objective of this study is set to determine the best physical and chemical pretreatment for desilication of paddy straw and encouraged delignification process. The pretreatment comprises the combination of physical and chemical treatments to maximize the process of desilication and delignification in the paddy straw. Physical treatment begins with paddy straws cut and grind to three different sizes which were 2 mm, 5 mm and 8 mm. All different sizes of paddy straw was (i) autoclave, (ii) boiled and (iii) soaked in four different concentrations (0.5%, 1%, 2% and 5%) of nitric acid and sodium hydroxide, respectively for chemical treatment. With the comparison on dry matter basis to untreated paddy straw, 5mm paddy straw pretreated with 0.5% nitric acid showed the highest cellulose content (96.6%). Through this combination, the cellulose fragment was improved by 54% but the lignin and hemicellulose were reduce to 38% and 54%, compared to untreated paddy straw, respectively. The percentage of ash content in acid treatment have total increment of 56% compared to untreated samples content while the percentage of ash content for alkali treatment have total loss of 55% and reduced compared to untreated samples. Therefore, 0.5% nitric acid was found to be the most suitable condition to break the cellulose-lignin complex.
format Conference or Workshop Item
author Mohd Ghazali, Mona Fatin Syazwanee
Ahmad Adli, Azleen
Abd Aziz, Nor Azwady
Mohd Zainudin, Nur Ain Izzati
Mustafa, Muskhazli
spellingShingle Mohd Ghazali, Mona Fatin Syazwanee
Ahmad Adli, Azleen
Abd Aziz, Nor Azwady
Mohd Zainudin, Nur Ain Izzati
Mustafa, Muskhazli
Enhance desilication and delignification in paddy straw via chemical and physical pretreatment
author_facet Mohd Ghazali, Mona Fatin Syazwanee
Ahmad Adli, Azleen
Abd Aziz, Nor Azwady
Mohd Zainudin, Nur Ain Izzati
Mustafa, Muskhazli
author_sort Mohd Ghazali, Mona Fatin Syazwanee
title Enhance desilication and delignification in paddy straw via chemical and physical pretreatment
title_short Enhance desilication and delignification in paddy straw via chemical and physical pretreatment
title_full Enhance desilication and delignification in paddy straw via chemical and physical pretreatment
title_fullStr Enhance desilication and delignification in paddy straw via chemical and physical pretreatment
title_full_unstemmed Enhance desilication and delignification in paddy straw via chemical and physical pretreatment
title_sort enhance desilication and delignification in paddy straw via chemical and physical pretreatment
publisher Department of Biology, Faculty of Science, Universiti Putra Malaysia
publishDate 2016
url http://psasir.upm.edu.my/id/eprint/77509/1/i-SIMBIOMAS%202016%2046.pdf
http://psasir.upm.edu.my/id/eprint/77509/
_version_ 1665896030993907712
score 13.211869

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