Formaldehyde removal from synthetic contaminated air using a biotrickling filter reactor

Formaldehyde (FA) removal from contaminated air with biotrickling filter reactor (BTFR) has been extensively studied thus far, but the effects of different volumetric airflow rates, pH, temperature and nutrient concentration on FA removal efficiency needs to be verified to design better BTFRs with o...

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Main Author:	Talaiekhozani, Amirreza
Format:	Thesis
Language:	English
Published:	2015
Subjects:	TA Engineering (General) Civil engineering (General)
Online Access:	http://eprints.utm.my/id/eprint/61058/1/AmirrezaTalaiekhozaniPFKA2015.pdf
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id	my-utm-ep.61058
record_format	uketd_dc
spelling	my-utm-ep.610582017-03-13T04:22:55Z Formaldehyde removal from synthetic contaminated air using a biotrickling filter reactor 2015-01 Talaiekhozani, Amirreza TA Engineering (General). Civil engineering (General) Formaldehyde (FA) removal from contaminated air with biotrickling filter reactor (BTFR) has been extensively studied thus far, but the effects of different volumetric airflow rates, pH, temperature and nutrient concentration on FA removal efficiency needs to be verified to design better BTFRs with optimal operating conditions. The use of specific microorganisms to remove FA from the air still needs to be verified. This study used the laboratory scale BTFR with a volume of 3.319 L, operated at the different volumetric airflow rates to having an insight on the effect of gas retention time on FA removal efficiency. To determine the optimal retention time of contaminated airflow through the BTFR system, mathematical models were developed. The predominant microorganisms were identified as to investigate the microbiological diversity. Then the BTFR was optimized for temperature and pH as well as nitrogen and phosphorus concentration to achieve its maximum efficiency. The BTFR formaldehyde removal efficiencies of 99, 96 and 95% were verified for the volumetric airflow rates of 90, 291, 1512 L/h, respectively, and the optimal retention times of 141, 50 and 26 s were verified for the BTFR experiments operating at 90, 291 and 1512 L/h volumetric airflow rate, respectively. The optimization of the BTFR conditions for removing FA from a synthetic contaminated air stream assessed by Taghuchi method showed that the best efficiency of the BTFR could be at a neutral pH of 7, a temperature range of 40 - 45?, an ammonium concentration of 0.5 mg/L and a phosphate concentration of 1 mg/L. The predominant bacteria attached on the surface of the supporting materials were identified as five bacterial colonies i.e., Salmonella bongori, Salmonella choleraesuis subsp. arizonae, Salmonella typhimurium, Serratia entomophila and Serratia ficaria. The logarithmic and linear models were proposed as an ideal approach for determining the optimal retention time, in order to make a significant contribution for future biotechnological developments and air quality improvement analysis. 2015-01 Thesis http://eprints.utm.my/id/eprint/61058/ http://eprints.utm.my/id/eprint/61058/1/AmirrezaTalaiekhozaniPFKA2015.pdf application/pdf en public http://dms.library.utm.my:8080/vital/access/manager/Repository/vital:96348 phd doctoral Universiti Teknologi Malaysia, Faculty of Civil Engineering Faculty of Civil Engineering
institution	Universiti Teknologi Malaysia
collection	UTM Institutional Repository
language	English
topic	TA Engineering (General) Civil engineering (General)
spellingShingle	TA Engineering (General) Civil engineering (General) Talaiekhozani, Amirreza Formaldehyde removal from synthetic contaminated air using a biotrickling filter reactor
description	Formaldehyde (FA) removal from contaminated air with biotrickling filter reactor (BTFR) has been extensively studied thus far, but the effects of different volumetric airflow rates, pH, temperature and nutrient concentration on FA removal efficiency needs to be verified to design better BTFRs with optimal operating conditions. The use of specific microorganisms to remove FA from the air still needs to be verified. This study used the laboratory scale BTFR with a volume of 3.319 L, operated at the different volumetric airflow rates to having an insight on the effect of gas retention time on FA removal efficiency. To determine the optimal retention time of contaminated airflow through the BTFR system, mathematical models were developed. The predominant microorganisms were identified as to investigate the microbiological diversity. Then the BTFR was optimized for temperature and pH as well as nitrogen and phosphorus concentration to achieve its maximum efficiency. The BTFR formaldehyde removal efficiencies of 99, 96 and 95% were verified for the volumetric airflow rates of 90, 291, 1512 L/h, respectively, and the optimal retention times of 141, 50 and 26 s were verified for the BTFR experiments operating at 90, 291 and 1512 L/h volumetric airflow rate, respectively. The optimization of the BTFR conditions for removing FA from a synthetic contaminated air stream assessed by Taghuchi method showed that the best efficiency of the BTFR could be at a neutral pH of 7, a temperature range of 40 - 45?, an ammonium concentration of 0.5 mg/L and a phosphate concentration of 1 mg/L. The predominant bacteria attached on the surface of the supporting materials were identified as five bacterial colonies i.e., Salmonella bongori, Salmonella choleraesuis subsp. arizonae, Salmonella typhimurium, Serratia entomophila and Serratia ficaria. The logarithmic and linear models were proposed as an ideal approach for determining the optimal retention time, in order to make a significant contribution for future biotechnological developments and air quality improvement analysis.
format	Thesis
qualification_name	Doctor of Philosophy (PhD.)
qualification_level	Doctorate
author	Talaiekhozani, Amirreza
author_facet	Talaiekhozani, Amirreza
author_sort	Talaiekhozani, Amirreza
title	Formaldehyde removal from synthetic contaminated air using a biotrickling filter reactor
title_short	Formaldehyde removal from synthetic contaminated air using a biotrickling filter reactor
title_full	Formaldehyde removal from synthetic contaminated air using a biotrickling filter reactor
title_fullStr	Formaldehyde removal from synthetic contaminated air using a biotrickling filter reactor
title_full_unstemmed	Formaldehyde removal from synthetic contaminated air using a biotrickling filter reactor
title_sort	formaldehyde removal from synthetic contaminated air using a biotrickling filter reactor
granting_institution	Universiti Teknologi Malaysia, Faculty of Civil Engineering
granting_department	Faculty of Civil Engineering
publishDate	2015
url	http://eprints.utm.my/id/eprint/61058/1/AmirrezaTalaiekhozaniPFKA2015.pdf
_version_	1747817775625142272

Formaldehyde removal from synthetic contaminated air using a biotrickling filter reactor

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