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Evaluation of gas retention time effects on the bio-trickling filter reactor performance for treating air contaminated with formaldehyde

Fulazzaky, Mohamad Ali and Talaiekhozani, Amirreza and Abd. Majid, Muhd. Zaimi and Ponraj, Mohanadoss and Goli, Amin (2013) Evaluation of gas retention time effects on the bio-trickling filter reactor performance for treating air contaminated with formaldehyde. RSC Advances, 3 (38). pp. 17462-17468. ISSN 2046-2069

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Official URL: https://doi.org/10.1039/C3RA41391H

Abstract

The effect of different gas retention times (GRTs) on the efficiency of formaldehyde (FA) removal has been studied using a bio-trickling filter reactor (BTFR) for obtaining the optimal operating conditions. Mathematical models to determine the optimum process conditions of the BTFR system for FA removal from contaminated air are developed. Approximately 66% of the FA introduced into the BTFR treatment process dissolved in the nutrient solution, and about 34% of the residual FA was still present in the air. The predominant bacteria on the surface of supporting materials are identified as the five bacterial colonies Salmonella bongori, Salmonella choleraesuis subsp. arizonae, Salmonella typhimurium, Serratia entomophila and Serratia ficaria, and they have the ability to metabolise FA from two-phases (gas and liquid), as a source of carbon and energy. The optimum removal efficiencies of 450 mg FA L−1 of contaminated air ranged from 95 to 99% are verified for GRTs ranging from 100 to 150 s. Exponential models are proposed as a new approach for determining the optimal operating conditions of the BTFR system and can make significant contributions to improving the air quality

Item Type:Article
Uncontrolled Keywords:bio-trickling filters, optimal operating conditions, optimum process conditions, predominant bacteria, reactor performance
Subjects:T Technology > TA Engineering (General). Civil engineering (General)
Divisions:Civil Engineering
ID Code:49364
Deposited By: Siti Nor Hashidah Zakaria
Deposited On:02 Dec 2015 02:09
Last Modified:14 Oct 2018 08:22

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