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Sustainable absorption panels from agricultural waste / Farrah Zuhaira Ismail … [et al.]

Noise pollution has become a major concern worldwide. Whilst majority agree at some level that the current traditional sound absorption panels using synthetic materials such as glass, wool, felts or polyester fibres are the solution to the noise problems, others on the other hand voice out concerns...

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Main Authors: Ismail, Farrah Zuhaira, Rahmat, Mohamad Nidzam, Mohd Yussof, Farrah Norizzah, Mohammad Noor, Mohd Amir Firdaus
Format: Book Section
Language:English
Published: Research Innovation Business Unit 2014
Subjects:
S Agriculture (General)
Agriculture and the environment
Soils. Soil science. Including soil surveys, soil chemistry, soil structure, soil-plant relationships
Online Access:https://ir.uitm.edu.my/id/eprint/70192/1/70192.pdf
https://ir.uitm.edu.my/id/eprint/70192/
http://www.iidex.com.my
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spelling my.uitm.ir.701922023-02-01T07:20:44Z https://ir.uitm.edu.my/id/eprint/70192/ Sustainable absorption panels from agricultural waste / Farrah Zuhaira Ismail … [et al.] Ismail, Farrah Zuhaira Rahmat, Mohamad Nidzam Mohd Yussof, Farrah Norizzah Mohammad Noor, Mohd Amir Firdaus S Agriculture (General) Agriculture and the environment Soils. Soil science. Including soil surveys, soil chemistry, soil structure, soil-plant relationships Noise pollution has become a major concern worldwide. Whilst majority agree at some level that the current traditional sound absorption panels using synthetic materials such as glass, wool, felts or polyester fibres are the solution to the noise problems, others on the other hand voice out concerns on the health and environmental impacts of such materials. Thus, new researches on sustainable sound absorption panels are now trending. There are many researches initiated to study the potential of waste especially agricultural waste as an acoustic panel. Malaysia has plenty of agricultural waste products such as coconut coir fibres, rice husk and palm oil fibres. Therefore this innovation focuses on producing acoustic panels from the combination of two waste; coconut coir fibres and waste paper. Four samples of acoustic panels were fabricated from a mixture of coconut coir powder and shredded waste papers as follow: Sample 1 (25% of coconut coir powder, 75% of shredded waste paper) Sample 2 (50% of coconut coir powder, 50% of shredded waste paper) Sample 3 (75% of coconut coir powder, 25% of shredded waste paper) Sample 4 (100% of coconut coir powder) The measurement of the panels is 0.5m x 0.5m x 0.012m. Gypsum powder was used as the binder. The measurement of sound absorption coefficient of the test sample was conducted in the reverberation chamber. The procedure of the test was carried out in accordance with ISO354:1985 standard. For sample 1 which was a mixture of 25% of coconut coir powder with 75% of shredded waste paper, the absorption coefficient are 0.03, 0.24, 0.26, 0.27, 0.36 and 0.40 at respective frequency of 250Hz, 500 Hz, 1000Hz, 2000Hz, 4000Hz and 8000Hz. it can be seen that more sound were absorbed at higher frequency range. For sample 2, the absorption coefficient are 0.14, 0.16, 0.27, 0.26, 0.30 and 0.26 at respective frequency of 250Hz, 500Hz, 1000Hz, 2000Hz, 4000Hz and 8000Hz. Meanwhile for sample 3 the absorption coefficient are 0.10, 0.16, 0.22, 0.24, 0.26 and 0.24 at respective frequency of 250Hz, 500Hz, 1000Hz, 2000Hz, 4000Hz and 8000Hz. It can be seen that the sound absorption performance had decreased 0.20 at 8000Hz. Sample 4 which contained 100% of coconut coir powder showed that the highest sound coefficient was 0.27 at 1000Hz before it decreased and became stagnant with 0.26 at higher frequency. Since the particle of the coconut coir powder is too small, combining it 100% has resulted in tighter space in the panel thus lowering the ability to absorb the sound. The results indicated that, Sample 1 gave the highest absorption coefficient compared to sample 2, 3 and 4. It can be concluded that the acoustic panel, made from a mixture of 25% coconut coir powder with 75% shredded waste paper provided higher absorption coefficient. This might be caused by the size of the coir powder which is very small, creating less void space in between the panel and thus causing it to absorb less sound. Research Innovation Business Unit 2014 Book Section NonPeerReviewed text en https://ir.uitm.edu.my/id/eprint/70192/1/70192.pdf Sustainable absorption panels from agricultural waste / Farrah Zuhaira Ismail … [et al.]. (2014) In: IIDEX 2014: invention, innovation & design exposition. Research Innovation Business Unit, Shah Alam, Selangor, p. 31. (Submitted) http://www.iidex.com.my
institution Universiti Teknologi Mara
building Tun Abdul Razak Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Teknologi Mara
content_source UiTM Institutional Repository
url_provider http://ir.uitm.edu.my/
language English
topic S Agriculture (General)
Agriculture and the environment
Soils. Soil science. Including soil surveys, soil chemistry, soil structure, soil-plant relationships
spellingShingle S Agriculture (General)
Agriculture and the environment
Soils. Soil science. Including soil surveys, soil chemistry, soil structure, soil-plant relationships
Ismail, Farrah Zuhaira
Rahmat, Mohamad Nidzam
Mohd Yussof, Farrah Norizzah
Mohammad Noor, Mohd Amir Firdaus
Sustainable absorption panels from agricultural waste / Farrah Zuhaira Ismail … [et al.]
description Noise pollution has become a major concern worldwide. Whilst majority agree at some level that the current traditional sound absorption panels using synthetic materials such as glass, wool, felts or polyester fibres are the solution to the noise problems, others on the other hand voice out concerns on the health and environmental impacts of such materials. Thus, new researches on sustainable sound absorption panels are now trending. There are many researches initiated to study the potential of waste especially agricultural waste as an acoustic panel. Malaysia has plenty of agricultural waste products such as coconut coir fibres, rice husk and palm oil fibres. Therefore this innovation focuses on producing acoustic panels from the combination of two waste; coconut coir fibres and waste paper. Four samples of acoustic panels were fabricated from a mixture of coconut coir powder and shredded waste papers as follow: Sample 1 (25% of coconut coir powder, 75% of shredded waste paper) Sample 2 (50% of coconut coir powder, 50% of shredded waste paper) Sample 3 (75% of coconut coir powder, 25% of shredded waste paper) Sample 4 (100% of coconut coir powder) The measurement of the panels is 0.5m x 0.5m x 0.012m. Gypsum powder was used as the binder. The measurement of sound absorption coefficient of the test sample was conducted in the reverberation chamber. The procedure of the test was carried out in accordance with ISO354:1985 standard. For sample 1 which was a mixture of 25% of coconut coir powder with 75% of shredded waste paper, the absorption coefficient are 0.03, 0.24, 0.26, 0.27, 0.36 and 0.40 at respective frequency of 250Hz, 500 Hz, 1000Hz, 2000Hz, 4000Hz and 8000Hz. it can be seen that more sound were absorbed at higher frequency range. For sample 2, the absorption coefficient are 0.14, 0.16, 0.27, 0.26, 0.30 and 0.26 at respective frequency of 250Hz, 500Hz, 1000Hz, 2000Hz, 4000Hz and 8000Hz. Meanwhile for sample 3 the absorption coefficient are 0.10, 0.16, 0.22, 0.24, 0.26 and 0.24 at respective frequency of 250Hz, 500Hz, 1000Hz, 2000Hz, 4000Hz and 8000Hz. It can be seen that the sound absorption performance had decreased 0.20 at 8000Hz. Sample 4 which contained 100% of coconut coir powder showed that the highest sound coefficient was 0.27 at 1000Hz before it decreased and became stagnant with 0.26 at higher frequency. Since the particle of the coconut coir powder is too small, combining it 100% has resulted in tighter space in the panel thus lowering the ability to absorb the sound. The results indicated that, Sample 1 gave the highest absorption coefficient compared to sample 2, 3 and 4. It can be concluded that the acoustic panel, made from a mixture of 25% coconut coir powder with 75% shredded waste paper provided higher absorption coefficient. This might be caused by the size of the coir powder which is very small, creating less void space in between the panel and thus causing it to absorb less sound.
format Book Section
author Ismail, Farrah Zuhaira
Rahmat, Mohamad Nidzam
Mohd Yussof, Farrah Norizzah
Mohammad Noor, Mohd Amir Firdaus
author_facet Ismail, Farrah Zuhaira
Rahmat, Mohamad Nidzam
Mohd Yussof, Farrah Norizzah
Mohammad Noor, Mohd Amir Firdaus
author_sort Ismail, Farrah Zuhaira
title Sustainable absorption panels from agricultural waste / Farrah Zuhaira Ismail … [et al.]
title_short Sustainable absorption panels from agricultural waste / Farrah Zuhaira Ismail … [et al.]
title_full Sustainable absorption panels from agricultural waste / Farrah Zuhaira Ismail … [et al.]
title_fullStr Sustainable absorption panels from agricultural waste / Farrah Zuhaira Ismail … [et al.]
title_full_unstemmed Sustainable absorption panels from agricultural waste / Farrah Zuhaira Ismail … [et al.]
title_sort sustainable absorption panels from agricultural waste / farrah zuhaira ismail … [et al.]
publisher Research Innovation Business Unit
publishDate 2014
url https://ir.uitm.edu.my/id/eprint/70192/1/70192.pdf
https://ir.uitm.edu.my/id/eprint/70192/
http://www.iidex.com.my
_version_ 1758581678919385088
score 13.211869

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