Profiling of volatile organic compounds (VOCs) evolved from delayed storage of local household food wastes and its potential health risk / Siti Rohana Mohd Yatim

Food waste are easily degradable during storage, producing large quantities of VOCs that are harmful to human health. The thesis discussed VOCs from delayed storage of local household food waste and its potential health risk. Using a bioreactor, this study measured the production of VOCs at three pa...

Full description

Saved in:

Bibliographic Details
Main Author:	Mohd Yatim, Siti Rohana
Format:	Thesis
Language:	English
Published:	2021
Subjects:	Hydrolysis Food processing and manufacture
Online Access:	https://ir.uitm.edu.my/id/eprint/46588/1/46588.pdf
Tags:	Add Tag No Tags, Be the first to tag this record!

id	my-uitm-ir.46588
record_format	uketd_dc
spelling	my-uitm-ir.465882022-04-28T04:44:34Z Profiling of volatile organic compounds (VOCs) evolved from delayed storage of local household food wastes and its potential health risk / Siti Rohana Mohd Yatim 2021-04 Mohd Yatim, Siti Rohana Hydrolysis Food processing and manufacture Food waste are easily degradable during storage, producing large quantities of VOCs that are harmful to human health. The thesis discussed VOCs from delayed storage of local household food waste and its potential health risk. Using a bioreactor, this study measured the production of VOCs at three parameters at four different temperature 20°C, 30°C, 40°C and 50°C for 21 days. The stud has the following objectives: 1. To develop a bioreactor for simulating real storage bin and to categories the composition of local household waste at selected residential area. 2. To investigate the emission of Volatile Organic Compounds (VOCs) released during the decomposition of local household food waste by considering different abiotic factors such as temperature, refuse age, relative humidity, moisture contents, oxygen level and pH in a bioreactor using Thermal Desorption-Gas Chromatography Mass Spectrometry (TD-GCMS). 3. To analyse the patterns of VOCs released during decomposition of waste using Artificial Neural Network (ANN) 4. To evaluate the potential health risk of waste collector to the VOCs arising from the extended storage of food waste using USEPA method. Overall, the significant association was found between VOCs emission and temperature, pH, relative humidity, oxygen level with the p-value<0.05. There is no significant different between levels. Determination of VOCs pattern using ANN, which utilized a multilayer feed forward back propagation with one hidden layer and seven hidden neurons, was found to be effective in predicting experimental data, thus saving time and cost for VOCs prediction. In Malaysia, lacking of study as well as lacking of awareness in both workers and municipality may impose detrimental health effect during waste collection. Therefore, this study provides health impact assessment with calculated hazard index between 0.1 and 1 for noncarcinogenic effects, which may cause long term issues among workers. Although carcinogenic risk posed by benzene and ethyl benzene was below the acceptable range, the concentration of these compounds is much higher than other types of VOCs. iv 2021-04 Thesis https://ir.uitm.edu.my/id/eprint/46588/ https://ir.uitm.edu.my/id/eprint/46588/1/46588.pdf text en public phd doctoral Universiti Teknologi MARA Faculty of Chemical Engineering Ku Hamid, Ku Halim (Prof.Dr.)
institution	Universiti Teknologi MARA
collection	UiTM Institutional Repository
language	English
advisor	Ku Hamid, Ku Halim (Prof.Dr.)
topic	Hydrolysis Food processing and manufacture
spellingShingle	Hydrolysis Food processing and manufacture Mohd Yatim, Siti Rohana Profiling of volatile organic compounds (VOCs) evolved from delayed storage of local household food wastes and its potential health risk / Siti Rohana Mohd Yatim
description	Food waste are easily degradable during storage, producing large quantities of VOCs that are harmful to human health. The thesis discussed VOCs from delayed storage of local household food waste and its potential health risk. Using a bioreactor, this study measured the production of VOCs at three parameters at four different temperature 20°C, 30°C, 40°C and 50°C for 21 days. The stud has the following objectives: 1. To develop a bioreactor for simulating real storage bin and to categories the composition of local household waste at selected residential area. 2. To investigate the emission of Volatile Organic Compounds (VOCs) released during the decomposition of local household food waste by considering different abiotic factors such as temperature, refuse age, relative humidity, moisture contents, oxygen level and pH in a bioreactor using Thermal Desorption-Gas Chromatography Mass Spectrometry (TD-GCMS). 3. To analyse the patterns of VOCs released during decomposition of waste using Artificial Neural Network (ANN) 4. To evaluate the potential health risk of waste collector to the VOCs arising from the extended storage of food waste using USEPA method. Overall, the significant association was found between VOCs emission and temperature, pH, relative humidity, oxygen level with the p-value<0.05. There is no significant different between levels. Determination of VOCs pattern using ANN, which utilized a multilayer feed forward back propagation with one hidden layer and seven hidden neurons, was found to be effective in predicting experimental data, thus saving time and cost for VOCs prediction. In Malaysia, lacking of study as well as lacking of awareness in both workers and municipality may impose detrimental health effect during waste collection. Therefore, this study provides health impact assessment with calculated hazard index between 0.1 and 1 for noncarcinogenic effects, which may cause long term issues among workers. Although carcinogenic risk posed by benzene and ethyl benzene was below the acceptable range, the concentration of these compounds is much higher than other types of VOCs. iv
format	Thesis
qualification_name	Doctor of Philosophy (PhD.)
qualification_level	Doctorate
author	Mohd Yatim, Siti Rohana
author_facet	Mohd Yatim, Siti Rohana
author_sort	Mohd Yatim, Siti Rohana
title	Profiling of volatile organic compounds (VOCs) evolved from delayed storage of local household food wastes and its potential health risk / Siti Rohana Mohd Yatim
title_short	Profiling of volatile organic compounds (VOCs) evolved from delayed storage of local household food wastes and its potential health risk / Siti Rohana Mohd Yatim
title_full	Profiling of volatile organic compounds (VOCs) evolved from delayed storage of local household food wastes and its potential health risk / Siti Rohana Mohd Yatim
title_fullStr	Profiling of volatile organic compounds (VOCs) evolved from delayed storage of local household food wastes and its potential health risk / Siti Rohana Mohd Yatim
title_full_unstemmed	Profiling of volatile organic compounds (VOCs) evolved from delayed storage of local household food wastes and its potential health risk / Siti Rohana Mohd Yatim
title_sort	profiling of volatile organic compounds (vocs) evolved from delayed storage of local household food wastes and its potential health risk / siti rohana mohd yatim
granting_institution	Universiti Teknologi MARA
granting_department	Faculty of Chemical Engineering
publishDate	2021
url	https://ir.uitm.edu.my/id/eprint/46588/1/46588.pdf
_version_	1783734761492054016

Profiling of volatile organic compounds (VOCs) evolved from delayed storage of local household food wastes and its potential health risk / Siti Rohana Mohd Yatim

Similar Items