Biological technologies for the treatment of atmospheric pollutants

Muñoz, Raúl; Malhautier, Luc; Fanlo, Jean‐Louis; Quijano, Guillermo

doi:10.1080/03067319.2015.1055471

Cited by 28 publications

(11 citation statements)

References 118 publications

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“…Bioscrubbers have the advantages of having improved predictability, reliability, and pH control, with reduced clogging issues compared to the BTFs and biofilters [116]. Bioscrubbers are, however, characterised by lower abatement efficiencies, a more complicated start up, and waste sludge disposal issues [116,126]. The biotechnological approaches discussed so far have been demonstrated to be a sufficient and competitive treatment technology for biogas conditioning when compared to physical-chemical technologies [94,95,127].…”

Section: Chemengineering 2019 3 X For Peer Reviewmentioning

confidence: 99%

Desulphurisation of Biogas: A Systematic Qualitative and Economic-Based Quantitative Review of Alternative Strategies

Okoro

Sun

2019

ChemEngineering

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The desulphurisation of biogas for hydrogen sulphide (H2S) removal constitutes a significant challenge in the area of biogas research. This is because the retention of H2S in biogas presents negative consequences on human health and equipment durability. The negative impacts are reflective of the potentially fatal and corrosive consequences reported when biogas containing H2S is inhaled and employed as a boiler biofuel, respectively. Recognising the importance of producing H2S-free biogas, this paper explores the current state of research in the area of desulphurisation of biogas. In the present paper, physical–chemical, biological, in-situ, and post-biogas desulphurisation strategies were extensively reviewed as the basis for providing a qualitative comparison of the strategies. Additionally, a review of the costing data combined with an analysis of the inherent data uncertainties due underlying estimation assumptions have also been undertaken to provide a basis for quantitative comparison of the desulphurisation strategies. It is anticipated that the combination of the qualitative and quantitative comparison approaches employed in assessing the desulphurisation strategies reviewed in the present paper will aid in future decisions involving the selection of the preferred biogas desulphurisation strategy to satisfy specific economic and performance-related targets.

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Section: Chemengineering 2019 3 X For Peer Reviewmentioning

confidence: 99%

Desulphurisation of Biogas: A Systematic Qualitative and Economic-Based Quantitative Review of Alternative Strategies

Okoro

Sun

2019

ChemEngineering

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“…However, since CH 4 is 25 times more potent as a greenhouse gas compared to CO 2 , off-gas treatment must be considered to diminish arising carbon emissions in larger applications (IPCC, 2007). Whilst numerous research studies have been published on biofiltration for low methane content waste gas (250-50000 ppmv) in landfill, and agricultural applications, there are few operating on waste gas arising from engineered anaerobic systems for municipal applications (Melse and Vander Werf, 2005;Gebert and Gröngröft, 2006;Munoz et al, 2015). Biofiltration has been successfully demonstrated for the oxidation of methane in off-gas at low concentrations from 0.17%v/v to 3.63%v/v, requiring residence times of between 7.4 and 42.8 minutes (Brandt et al, 2016;Nikiema et al, 2005).…”

Section: Downstream Gas Phase Management For Discharge To the Atmospherementioning

confidence: 99%

Dissolved gas separation for engineered anaerobic wastewater systems

Heile

Chernicharo

Brandt

et al. 2017

Separation and Purification Technology

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Dissolved gases produced within engineered anaerobic processes subsequently create a fugitive emission which can have financial, environmental and health and safety implications. Whilst desorption technology has been used to control dissolved gases in the drinking water sector, there is considerably less understanding of its deployment in wastewater for which there are numerous existing and emerging challenges. This review therefore focuses on existing and proposed technological approaches to gas desorption in engineered anaerobic wastewater processes, with specific emphasis on technology compatibility and downstream gas phase management. Simplified engineered solutions such as diffused aeration and multi-tray aerators appear robust solutions for implementation into wastewater. However, these processes are characterised by a low mass transfer coefficient and require high gas to liquid ratios (G/L) to achieve reasonable separation, which suggests their suitability is limited to small scale applications, in which gas recovery is not a priority. Packed columns and membrane contactors afford process intensification through increasing interfacial area which favours large scale applications; although both will require prefiltration technology to obviate media clogging. Vacuum or steam is the preferred driving force for separation when gas recovery is sought, while sweep-gas is energetically favoured. Sweep-gas has been used for gas recovery by operating at G/L toward the equilibrium value, which somewhat constrains mass transfer. Process selection must therefore be weighted on whole life cost, but will also be dependent upon process scale, financial (e.g. incentivisation) and non-financial (e.g. carbon) instruments, which are strongly influenced by regional policy.

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“…Moreover, styrene inlet concentrations in the range of 2-24 g m -3 (1.8-22 g C m -3 ) are far higher than those typically found in real-case emissions. VOC recovery technologies rather than destructive processes are actually recommended for concentrations higher than 5 g m -3 [24]. Zamir et al [19] studied styrene removal in the presence of silicone oil at inlet concentrations of 0.8-3.3 g m -3 (0.7-3 g C m -3 ) and EBRTs of 1 and 2 min.…”

Section: <Table 3>mentioning

confidence: 99%

“…mg C m-3 ) progressively hindered the RE up to a value of 53% at an inlet concentration of 1100 mg m -3 (1014 mg C m -3 ).At this point it is important to stress that biological air treatment technologies are nowadays challenged by industrial end-users to improve the economic feasibility in terms of investment costs[23]. Thus, although an EBRT of 30 s is one of the shortest gas residence times yielding high and stable styrene REs in BTFs further optimization in terms of EBRT is still necessary to reduce the size of the BTF and, consequently, reduce the investment cost of the treatment technology[24].…”

mentioning

confidence: 99%

Enhanced styrene removal in a two-phase partitioning bioreactor operated as a biotrickling filter: Towards full-scale applications

San‐Valero

Gabaldón

Penya-Roja

et al. 2017

Chemical Engineering Journal

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Styrene vapor abatement was investigated in a two-phase partitioning bioreactor operated as a biotrickling filter (TPPB-BTF). The removal performance of the TPPB-BTF was simultaneously compared with a conventional BTF, which served as a control. Industrialgrade silicone oil was used as the non-aqueous phase in the TPPB-BTF due to its high affinity for styrene. Both bioreactors were operated at styrene inlet concentrations ranging from 55 to 323 mg C m-3 and empty bed residence times (EBRT) of 15-30 s, corresponding to pollutant loading rates of 13-77 g C m-3 h-1. Both bioreactors exhibited styrene removal efficiencies (REs) higher than 90% at an EBRT of 30 s. Nevertheless, the TPPB-BTF showed a superior removal performance than that recorded in the control BTF at EBRTs shorter than 30 s. REs of 89%, 84% and 57% were recorded in the TPPB-BTF at EBRT of 15 s and loading rates of 13, 22 and 77 g C m-3 h-1 , respectively, while the control BTF supported removal efficiencies of 64%, 42% and 18-42% under the same experimental conditions. The resilience and robustness of the TPPB-BTF over styrene shock loadings and transient inlet concentration was also confirmed, the TPPB-BTF being able to recover a stable RE of 89% one day after such operation disturbances. The potential of the TPPB-BTF towards full scale applications was also critically discussed based on the experimental determination of silicone oil loses through aqueous phase renewal, which accounted for 0.4% of the initial volume of oil added to the TPPB-BTF after 87 days of operation.

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Biological technologies for the treatment of atmospheric pollutants

Cited by 28 publications

References 118 publications

Desulphurisation of Biogas: A Systematic Qualitative and Economic-Based Quantitative Review of Alternative Strategies

Desulphurisation of Biogas: A Systematic Qualitative and Economic-Based Quantitative Review of Alternative Strategies

Dissolved gas separation for engineered anaerobic wastewater systems

Enhanced styrene removal in a two-phase partitioning bioreactor operated as a biotrickling filter: Towards full-scale applications

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