Release of formaldehyde during the biofiltration of methanol vapors in a peat biofilter inoculated with Pichia pastoris GS115

Guerrero, Karlo; Arancibia, Alejandra; Cáceres, Manuel; Aroca, Germán

doi:10.1016/j.ejbt.2020.01.010

Cited by 2 publications

(5 citation statements)

References 2 publications

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“…Untreated intermediates usually can be found as output Cs in outlet gas stream or leachate of the biofilters if the pollutant inlet load is high (IL > 150 g m −3 h −1 ) . For example, formaldehyde emissions were detected in a methanol biofilter for methanol ILs exceeding 250 g m −3 h −1 . Therefore, in the current study, the presence of intermediates in gas or liquid end products was neglected.…”

Section: Resultsmentioning

confidence: 99%

“…Methanol, formaldehyde and formic acid are the intermediates for CH 4 biodegradation 23 ; methanol bioconversion is based on formaldehyde and formic acid production, 2 and intermediate compounds such as acetaldehyde, acetic acid and ethyl acetate contribute to ethanol bioxidation 39 . Untreated intermediates usually can be found as output Cs in outlet gas stream or leachate of the biofilters if the pollutant inlet load is high (IL > 150 g m −3 h −1 ) 39,40 . For example, formaldehyde emissions were detected in a methanol biofilter for methanol ILs exceeding 250 g m −3 h −1 .…”

Section: Carbon Content and Distribution In Gas Phasementioning

confidence: 99%

“…For example, formaldehyde emissions were detected in a methanol biofilter for methanol ILs exceeding 250 g m −3 h −1 . 40 Therefore, in the current study, the presence of intermediates in gas or liquid end products was neglected.…”

Section: Carbon Content and Distribution In Gas Phasementioning

confidence: 99%

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Moving from alcohol to methane biofilters: an experimental study on biofilter performance and carbon distribution

Ferdowsi

Desrochers

Jones

et al. 2019

J of Chemical Tech & Biotech

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BACKGROUND Biofilters can be used to eliminate different gaseous pollutants including alcohols (e.g. methanol, ethanol) and methane (CH4) individually or in a mixture. In this regard, the biofilter adaptability to feed composition variation is an industrial requisite. Inlet gas composition changes also give a better insight about carbon input and end‐points in biofilters. In this study, the gradual conversions of two biofilters from methanol and ethanol to CH4 were investigated. RESULTS Both biofilters reached 100% removal efficiencies for the alcohols with no initial inoculation. Keeping the total inlet load constant (30 ± 1.3 g m−3 h−1), CH4 was progressively substituted in the feed with corresponding alcohol:CH4 mass ratios of 3:1, 1:1, 1:3 and 0 galcohol:gCH4. Maximum CH4 removal efficiencies of 52% and 29% were obtained (respectively) for biofilters started with methanol and ethanol. By moving from alcohols to CH4 biofilters, the gas phase output carbon increased from 273 to 666 gcarbon day−1 and from 377 to 681 gcarbon day−1 respectively for the methanol‐ and ethanol‐based biofilters. CONCLUSION This study showed a successful treatment based on inlet pollutant alteration from methanol or ethanol to CH4 in two separate biofilters. However, the methanol‐based biofilter displayed a better performance and a shorter acclimation time for CH4 conversion. © 2019 Society of Chemical Industry

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Section: Resultsmentioning

confidence: 99%

Section: Carbon Content and Distribution In Gas Phasementioning

confidence: 99%

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Moving from alcohol to methane biofilters: an experimental study on biofilter performance and carbon distribution

Ferdowsi

Desrochers

Jones

et al. 2019

J of Chemical Tech & Biotech

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“…Utilizing MATLAB software, we conducted numerical simulations to solve the dimensionless equations [5,6] with the boundary conditions [7,8]. These numerical findings were then compared with our analytical solutions obtained through the MADM for all possible values of the parameters α 1 , α 2 , α 3 , α 4 , α 5 .…”

Section: Numerical Simulationmentioning

confidence: 99%

“…To mitigate this problem, many methods have been developed to reduce VOC emissions [1]- [4]. Among these methods, biofiltration stands out as one of the prominent approaches to effectively reduce VOCs [5]- [6]. Botanical filtration, a technique employing green plants, has been developed to organically reduce VOCs.…”

Section: Introductionmentioning

confidence: 99%

Analytical Solution for the Modeling Botanical Biofiltration of Indoor Air Quality

Jeeva,

Dharmalingam,

Veeramuni

2023

Preprint

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In this paper, the mathematical model analyzed removing the VOCs using the biological-based treatment method of botanical biofiltration has been considered. We address the dimensionless mass balance concentration in the gas and biofilm phases for the indoor air quality model. Gas and biofilm phases described in a differential equations with boundary conditions. The dimensionless concentration of the gas and biofilm phases are solved analytically using new approaches analyzed methods such as Modified Adomian Decomposition Method (MADM). Furthermore, the analytical reports are then compared with the numerical findings for understanding the system behavior and to demonstrate the accuracy of the results.

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Release of formaldehyde during the biofiltration of methanol vapors in a peat biofilter inoculated with Pichia pastoris GS115

Cited by 2 publications

References 2 publications

Moving from alcohol to methane biofilters: an experimental study on biofilter performance and carbon distribution

Moving from alcohol to methane biofilters: an experimental study on biofilter performance and carbon distribution

Analytical Solution for the Modeling Botanical Biofiltration of Indoor Air Quality

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