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The effect of ultrasonic energy on the enhancement of the biodegradability of food waste

In this study, the effect of ultrasonic pretreatment on the physicochemical property changes and methane production potential of anaerobic digestion of food waste was investigated. The study, involving a laboratory experimentation by sonicating 200 mL of food waste sample, was investigated at differ...

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Main Authors: Sabiani, N. H. M., Idris, Azni, Wan Ab. Karim Ghani, Wan Azlina, Baharuddin, Azhari Samsu
Format: Article
Language:English
Published: Taylor & Francis 2015
Online Access:http://psasir.upm.edu.my/id/eprint/46573/1/The%20effect%20of%20ultrasonic%20energy%20on%20the%20enhancement%20of%20the%20biodegradability%20of%20food%20waste.pdf
http://psasir.upm.edu.my/id/eprint/46573/
http://www.tandfonline.com/loi/ueso20
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spelling my.upm.eprints.465732018-02-26T04:10:29Z http://psasir.upm.edu.my/id/eprint/46573/ The effect of ultrasonic energy on the enhancement of the biodegradability of food waste Sabiani, N. H. M. Idris, Azni Wan Ab. Karim Ghani, Wan Azlina Baharuddin, Azhari Samsu In this study, the effect of ultrasonic pretreatment on the physicochemical property changes and methane production potential of anaerobic digestion of food waste was investigated. The study, involving a laboratory experimentation by sonicating 200 mL of food waste sample, was investigated at different sonication times (2, 4, 6, 8, 10 min), and the specific energy input ranged from 5,396 to 25,997 kJ/kg total solid. The experimental results found that the mean particle size diameter (d50) of the ultrasonically treated food waste decreased from 59 to 21.9 μm with the specific surface area increasing from 0.523 to 1.2 μm2/g. This is evidenced in the food waste morphological structure changes from particles or granules varying in size and shape from small to large and round to oval or unsymmetrical shaped when the food waste samples were sonicated in the range of 2–10 min as shown by scanning electron microscopy. The value of soluble chemical oxygen demand was increased about 34–40% while the degree of disintegration was recorded as 57.15, 61.10, 71.08, 68.94, and 68.68%, respectively. The CODsolubilization was achieved around 11.4, 11.8, 13.4, 12.7, and 13.2%, when the food waste sample was sonicated at 2, 4, 6, 8, and 10 min, respectively. This CODsolubilization correlated well with DD when the linear relationship was shown by R2 = 0.945. The result shows that the use of sonicated food waste in the anaerobic digestion process has increased about 45.9, 40.3, 46.6, 64.4, and 70.5% of cumulative CH4 production rates in the food waste sample sonicated at 2, 4, 6, 8, and 10 min, respectively, when compared to the non-sonicated food waste sample. Taylor & Francis 2015 Article PeerReviewed text en http://psasir.upm.edu.my/id/eprint/46573/1/The%20effect%20of%20ultrasonic%20energy%20on%20the%20enhancement%20of%20the%20biodegradability%20of%20food%20waste.pdf Sabiani, N. H. M. and Idris, Azni and Wan Ab. Karim Ghani, Wan Azlina and Baharuddin, Azhari Samsu (2015) The effect of ultrasonic energy on the enhancement of the biodegradability of food waste. Energy Sources, Part A: Recovery, Utilization, and Environmental Effect, 37 (13). pp. 1397-1405. ISSN 1556-7036; ESSN: 1556-7230 http://www.tandfonline.com/loi/ueso20 10.1080/15567036.2014.915362
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 In this study, the effect of ultrasonic pretreatment on the physicochemical property changes and methane production potential of anaerobic digestion of food waste was investigated. The study, involving a laboratory experimentation by sonicating 200 mL of food waste sample, was investigated at different sonication times (2, 4, 6, 8, 10 min), and the specific energy input ranged from 5,396 to 25,997 kJ/kg total solid. The experimental results found that the mean particle size diameter (d50) of the ultrasonically treated food waste decreased from 59 to 21.9 μm with the specific surface area increasing from 0.523 to 1.2 μm2/g. This is evidenced in the food waste morphological structure changes from particles or granules varying in size and shape from small to large and round to oval or unsymmetrical shaped when the food waste samples were sonicated in the range of 2–10 min as shown by scanning electron microscopy. The value of soluble chemical oxygen demand was increased about 34–40% while the degree of disintegration was recorded as 57.15, 61.10, 71.08, 68.94, and 68.68%, respectively. The CODsolubilization was achieved around 11.4, 11.8, 13.4, 12.7, and 13.2%, when the food waste sample was sonicated at 2, 4, 6, 8, and 10 min, respectively. This CODsolubilization correlated well with DD when the linear relationship was shown by R2 = 0.945. The result shows that the use of sonicated food waste in the anaerobic digestion process has increased about 45.9, 40.3, 46.6, 64.4, and 70.5% of cumulative CH4 production rates in the food waste sample sonicated at 2, 4, 6, 8, and 10 min, respectively, when compared to the non-sonicated food waste sample.
format Article
author Sabiani, N. H. M.
Idris, Azni
Wan Ab. Karim Ghani, Wan Azlina
Baharuddin, Azhari Samsu
spellingShingle Sabiani, N. H. M.
Idris, Azni
Wan Ab. Karim Ghani, Wan Azlina
Baharuddin, Azhari Samsu
The effect of ultrasonic energy on the enhancement of the biodegradability of food waste
author_facet Sabiani, N. H. M.
Idris, Azni
Wan Ab. Karim Ghani, Wan Azlina
Baharuddin, Azhari Samsu
author_sort Sabiani, N. H. M.
title The effect of ultrasonic energy on the enhancement of the biodegradability of food waste
title_short The effect of ultrasonic energy on the enhancement of the biodegradability of food waste
title_full The effect of ultrasonic energy on the enhancement of the biodegradability of food waste
title_fullStr The effect of ultrasonic energy on the enhancement of the biodegradability of food waste
title_full_unstemmed The effect of ultrasonic energy on the enhancement of the biodegradability of food waste
title_sort effect of ultrasonic energy on the enhancement of the biodegradability of food waste
publisher Taylor & Francis
publishDate 2015
url http://psasir.upm.edu.my/id/eprint/46573/1/The%20effect%20of%20ultrasonic%20energy%20on%20the%20enhancement%20of%20the%20biodegradability%20of%20food%20waste.pdf
http://psasir.upm.edu.my/id/eprint/46573/
http://www.tandfonline.com/loi/ueso20
_version_ 1643833789595516928
score 13.211869

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