Biofiltration of volatile organic compounds using fungi and its conceptual and mathematical modeling

Vergara-Fernández, Alberto; Revah, Sergio; Moreno-Casas, Patricio A.; Scott, Felipe

doi:10.1016/j.biotechadv.2018.03.008

Cited by 67 publications

(20 citation statements)

References 94 publications

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“…Alcohols, as other kinetic limited pollutants, usually present higher IL critical values than mass transfer limited pollutants (> 100 g m −3 h −1 ) . Moreover, a literature review of results obtained for different VOCs in several biofilters indicated that, among hydrophilic compounds, the highest IL critical values were reached while treating methanol (up to 200 g m −3 h −1 ) . The critical loads that were achieved in the present study are thus in accordance with the literature.…”

Section: Resultssupporting

confidence: 90%

“…32 Moreover, a literature review of results obtained for different VOCs in several biofilters indicated that, among hydrophilic compounds, the highest IL critical values were reached while treating methanol (up to 200 g m −3 h −1 ). 20 The critical loads that were achieved in the present study are thus in accordance with the literature. Regarding the maximum EC achieved (343.8 g m −3 h −1 ), results are within the upper range encountered in biofiltration systems (Table 1).…”

Section: Removal Performancesupporting

confidence: 91%

“…As already observed by gaseous residence time distribution analysis with pulse tracer‐gases (usually methane), the hydrodynamic behavior of the air stream can progressively deviate from the ideal plug‐flow regime after heavy biofilm growth. In such scenario, pressure drop increase and clogging, associated with the formation of dead zones and channeling, can severely affect removal performance . Besides, for methanol biofilters, very few studies report the different species of microorganisms that colonize the packing material and constitute the biofilm.…”

Section: Introductionmentioning

confidence: 99%

“…In such scenario, pressure drop increase and clogging, associated with the formation of dead zones and channeling, can severely affect removal performance. 20,21 Besides, for methanol biofilters, very few studies report the different species of microorganisms that colonize the packing material and constitute the biofilm.…”

Section: Introductionmentioning

confidence: 99%

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Biofiltration of high concentrations of methanol vapors: removal performance, carbon balance and microbial and fly populations

Cruz‐García

Geronimo‐Meza

Martínez‐Lievana

et al. 2019

J of Chemical Tech & Biotech

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BACKGROUND Methanol vapors, broadly emitted by industry, can be cost‐effectively treated by biofiltration. However, long‐term operation under high concentrations regularly encountered in the pulp and paper industry (> 5 g m−3) has been barely studied. RESULTS Methanol concentrations between 1.6 and 14 g m−3 were treated in a biofilter. Complete methanol removal was obtained for concentrations up to 3.5 g m−3, for an empty bed retention time (EBRT) of 60 s. A higher EBRT (160 s) was necessary to eliminate all methanol for concentrations up to 7 g m−3. For higher concentrations, a maximum elimination capacity (ECmax) of 343.8 g m−3 h−1 was achieved. The main challenge encountered during the biofiltration of high methanol concentrations was excessive biomass buildup (with a performance drop due to clogging occurring every 2 weeks). Under high methanol concentrations, 11 bacteria, three fungi, and one yeast prevailed in the biofilm. Flies and fly larvae were detected when no biofilter clogging was observed, regulating biomass excess. CONCLUSIONS High methanol concentrations trigger biomass growth and clogging. Diptera represent a research opportunity to control such phenomena. © 2019 Society of Chemical Industry

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Section: Resultssupporting

confidence: 90%

Section: Removal Performancesupporting

confidence: 91%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Biofiltration of high concentrations of methanol vapors: removal performance, carbon balance and microbial and fly populations

Cruz‐García

Geronimo‐Meza

Martínez‐Lievana

et al. 2019

J of Chemical Tech & Biotech

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“…On the other hand, little is known about the potential of algal-bacterial photobioreactors to remove trace contaminants from biogas such as volatile organic compounds (VOCs) and mercaptans. Typically, VOCs biotreatment can be effectively performed in bacterial or fungal biofilters, where different elimination capacities can be reached depending on the solubility and concentration of the target VOCs, [8,9]. In this context, Borde et al, [10] reported the potential of algal-bacterial cultures for the biodegradation of salicylate, phenol, and phenanthrene with removal efficiencies >85%.…”

Section: Introductionmentioning

confidence: 99%

Integral (VOCs, CO2, mercaptans and H2S) photosynthetic biogas upgrading using innovative biogas and digestate supply strategies

Franco‐Morgado

Toledo-Cervantes

González-Sánchez

et al. 2018

Chemical Engineering Journal

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The performance of a pilot high rate algal pond (HRAP) interconnected with a biogas absorption column during the simultaneous upgrading of biogas and treatment of digestate was evaluated under two innovative biogas and nutrient supply strategies. Process operation with biogas supply during the night at a liquid recirculation/biogas ratio of 0.5 to prevent N 2 and O 2 stripping resulted in a biomethane complying with most international regulations for injection into natural gas grids (99.1 ± 1% CH 4 , 0.5 ± 0.2% CO 2 , 0.6 ± 0.5% N 2 and 0.07 ± 0.08% O 2). The potential of this technology to remove methyl mercaptan (MeSH), toluene and hexane from biogas (typically present at trace levels) was assessed, for the first time, with removal efficiencies under steady-state correlating with pollutant hydrophobicity (7 ± 7% for hexane, 66 ± 4% for MeSH and 98 ± 1% for toluene). Finally, the supply of *Revised Manuscript (clean for typesetting) Click here to view linked References 2 digestate during the dark period shifted both microalgae population structure and biomass composition in the HRAP without a significant impact on biomethane quality. Overall, the removal of nitrogen and phosphorous from digestate in the HRAP was almost complete (96-99%) regardless of the nutrient supply strategy.

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Sustainable Microplastic Remediation with Record Capacity Unleashed via Surface Engineering of Natural Fungal Mycelium Framework

Xiao

Zhang

et al. 2023

Adv Funct Materials

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Plastic-induced pollution has recently triggered global environmental, biodiversity, and public health concerns. Plastic micro/nanoparticles suspended in water that are non-recyclable and non-degradable are found in plants, animals, and even human blood, and their remediation represents an emergent societal need. In this study, a highly efficient strategy is reported to remove microplastics by using a sustainable framework derived from fungal mycelium (FM), which has reached a record capacity at 2.49 g g −1 , as it is known. This excellent removal capacity results from both the inherent properties and surface cationization of the FM. First, FM has a loose entanglement and porous structure with extracellular polymeric substances on the surface, which endows FM with the capacity to adsorb microplastics. Second, FM is engineered with 2,3-epoxypropyltrimethylammonium chloride (EPTAC) to enable its positively charged surface, which significantly enhances the adsorption of microplastics. Kinetic analysis and density functional theory reveal that the excellent microplastic removal is attributed to the enhanced electrostatic interaction between microplastics and EPTAC-g-FM. Along with the inherent merits of FM, which are natural, renewable, biodegradable, environmentally friendly, and easy to scale up, FM represents a green, facile, and cost-effective next-generation technology for remediating microplastics in clean water.

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Biofiltration of volatile organic compounds using fungi and its conceptual and mathematical modeling

Cited by 67 publications

References 94 publications

Biofiltration of high concentrations of methanol vapors: removal performance, carbon balance and microbial and fly populations

Biofiltration of high concentrations of methanol vapors: removal performance, carbon balance and microbial and fly populations

Integral (VOCs, CO2, mercaptans and H2S) photosynthetic biogas upgrading using innovative biogas and digestate supply strategies

Sustainable Microplastic Remediation with Record Capacity Unleashed via Surface Engineering of Natural Fungal Mycelium Framework

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