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Improvement of delignification, desilication and cellulosic content availability in paddy straw via physico-chemical pretreatments

Aim: Paddy straw consists of cellulose and hemicellulose as their plant materials leading to their potential to produce bioethanol through several processes such as pretreatment, enzymatic hydrolysis and ethanol fermentation. Among these processes, pretreatment of paddy straw is particularly importa...

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Main Authors: Mohamed Ghazali, Mona Fatin Syazwanee, Abd Ghafar, Nurul Shaziera, Mohd Zainudin, Nur Ain Izzati, Abd Aziz, Nor Azwady, Mustafa, Muskhazli
Format: Article
Language:English
Published: Sciencedomain International 2018
Online Access:http://psasir.upm.edu.my/id/eprint/74602/1/Improvement%20of%20delignification%2C%20desilication%20and%20cellulosic%20content%20availability%20in%20paddy%20straw%20via%20physico-chemical%20pretreatments.pdf
http://psasir.upm.edu.my/id/eprint/74602/
https://www.researchgate.net/publication/325383158_Improvement_of_Delignification_Desilication_and_Cellulosic_Content_Availability_in_Paddy_Straw_via_Physico-chemical_Pretreatments
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spelling my.upm.eprints.746022020-12-09T21:54:42Z http://psasir.upm.edu.my/id/eprint/74602/ Improvement of delignification, desilication and cellulosic content availability in paddy straw via physico-chemical pretreatments Mohamed Ghazali, Mona Fatin Syazwanee Abd Ghafar, Nurul Shaziera Mohd Zainudin, Nur Ain Izzati Abd Aziz, Nor Azwady Mustafa, Muskhazli Aim: Paddy straw consists of cellulose and hemicellulose as their plant materials leading to their potential to produce bioethanol through several processes such as pretreatment, enzymatic hydrolysis and ethanol fermentation. Among these processes, pretreatment of paddy straw is particularly important for enzymatic hydrolysis process as they are being limited by the presence of ash and silica content. This study was set to observe the effect of different pretreatments on cellulose, hemicellulose, lignin and ash content of paddy straw. Place and Duration of Study: This study was conducted in Department of Biology, Faculty of Science, Universiti Putra Malaysia, between October 2015 and June 2016. Methodology: Pretreatments comprises the combination of physical (mechanical) and chemical treatments to modify the lignocellulosic structure while reduce lignin and separate silica content in paddy straw fibre. Paddy straw was prepared into three different sizes (2mm, 5mm and 8 mm) for physical treatment. Autoclave, boiled and four different concentrations (0.5%, 1%, 2% and 5% (v/v) and (w/v) respectively) of nitric acid and sodium hydroxide, respectively for chemical treatment were used on paddy straw. Results: Size five millimeter paddy straw showed the highest cellulose content (35.61%) compared to the other sizes and when the paddy pretreated with 2% (w/v) sodium hydroxide (NaOH), the percentage of cellulose content escalated to 72.47%. Pretreatment of 2% (w/v) NaOH have performed the most efficient delignification and desilication process (1.02% lignin; 5.44 ash content); and the performance was supported with SEM images on surface area of the paddy straw with large distortion caused by the treatment. Conclusion: Therefore, a physico-chemical pretreatment of size 5 mm and 2% (w/v) NaOH was found to be the most suitable condition to break the cellulose-lignin complex and make the paddy straw becomes feasible for biofuel production. Sciencedomain International 2018 Article PeerReviewed text en http://psasir.upm.edu.my/id/eprint/74602/1/Improvement%20of%20delignification%2C%20desilication%20and%20cellulosic%20content%20availability%20in%20paddy%20straw%20via%20physico-chemical%20pretreatments.pdf Mohamed Ghazali, Mona Fatin Syazwanee and Abd Ghafar, Nurul Shaziera and Mohd Zainudin, Nur Ain Izzati and Abd Aziz, Nor Azwady and Mustafa, Muskhazli (2018) Improvement of delignification, desilication and cellulosic content availability in paddy straw via physico-chemical pretreatments. Annual Research & Review in Biology, 26 (6). art. no. ARRB.40947. pp. 1-11. ISSN 2347-565X; ESSN: 2231-4776 https://www.researchgate.net/publication/325383158_Improvement_of_Delignification_Desilication_and_Cellulosic_Content_Availability_in_Paddy_Straw_via_Physico-chemical_Pretreatments 10.9734/ARRB/2018/40947
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 Aim: Paddy straw consists of cellulose and hemicellulose as their plant materials leading to their potential to produce bioethanol through several processes such as pretreatment, enzymatic hydrolysis and ethanol fermentation. Among these processes, pretreatment of paddy straw is particularly important for enzymatic hydrolysis process as they are being limited by the presence of ash and silica content. This study was set to observe the effect of different pretreatments on cellulose, hemicellulose, lignin and ash content of paddy straw. Place and Duration of Study: This study was conducted in Department of Biology, Faculty of Science, Universiti Putra Malaysia, between October 2015 and June 2016. Methodology: Pretreatments comprises the combination of physical (mechanical) and chemical treatments to modify the lignocellulosic structure while reduce lignin and separate silica content in paddy straw fibre. Paddy straw was prepared into three different sizes (2mm, 5mm and 8 mm) for physical treatment. Autoclave, boiled and four different concentrations (0.5%, 1%, 2% and 5% (v/v) and (w/v) respectively) of nitric acid and sodium hydroxide, respectively for chemical treatment were used on paddy straw. Results: Size five millimeter paddy straw showed the highest cellulose content (35.61%) compared to the other sizes and when the paddy pretreated with 2% (w/v) sodium hydroxide (NaOH), the percentage of cellulose content escalated to 72.47%. Pretreatment of 2% (w/v) NaOH have performed the most efficient delignification and desilication process (1.02% lignin; 5.44 ash content); and the performance was supported with SEM images on surface area of the paddy straw with large distortion caused by the treatment. Conclusion: Therefore, a physico-chemical pretreatment of size 5 mm and 2% (w/v) NaOH was found to be the most suitable condition to break the cellulose-lignin complex and make the paddy straw becomes feasible for biofuel production.
format Article
author Mohamed Ghazali, Mona Fatin Syazwanee
Abd Ghafar, Nurul Shaziera
Mohd Zainudin, Nur Ain Izzati
Abd Aziz, Nor Azwady
Mustafa, Muskhazli
spellingShingle Mohamed Ghazali, Mona Fatin Syazwanee
Abd Ghafar, Nurul Shaziera
Mohd Zainudin, Nur Ain Izzati
Abd Aziz, Nor Azwady
Mustafa, Muskhazli
Improvement of delignification, desilication and cellulosic content availability in paddy straw via physico-chemical pretreatments
author_facet Mohamed Ghazali, Mona Fatin Syazwanee
Abd Ghafar, Nurul Shaziera
Mohd Zainudin, Nur Ain Izzati
Abd Aziz, Nor Azwady
Mustafa, Muskhazli
author_sort Mohamed Ghazali, Mona Fatin Syazwanee
title Improvement of delignification, desilication and cellulosic content availability in paddy straw via physico-chemical pretreatments
title_short Improvement of delignification, desilication and cellulosic content availability in paddy straw via physico-chemical pretreatments
title_full Improvement of delignification, desilication and cellulosic content availability in paddy straw via physico-chemical pretreatments
title_fullStr Improvement of delignification, desilication and cellulosic content availability in paddy straw via physico-chemical pretreatments
title_full_unstemmed Improvement of delignification, desilication and cellulosic content availability in paddy straw via physico-chemical pretreatments
title_sort improvement of delignification, desilication and cellulosic content availability in paddy straw via physico-chemical pretreatments
publisher Sciencedomain International
publishDate 2018
url http://psasir.upm.edu.my/id/eprint/74602/1/Improvement%20of%20delignification%2C%20desilication%20and%20cellulosic%20content%20availability%20in%20paddy%20straw%20via%20physico-chemical%20pretreatments.pdf
http://psasir.upm.edu.my/id/eprint/74602/
https://www.researchgate.net/publication/325383158_Improvement_of_Delignification_Desilication_and_Cellulosic_Content_Availability_in_Paddy_Straw_via_Physico-chemical_Pretreatments
_version_ 1687395150949515264
score 13.211869

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