H2S and volatile fatty acids elimination by biofiltration: Clean-up process for biogas potential use

Ramírez-Sáenz, D.; Zárate-Segura, Paola; Guerrero–Barajas, Claudia; García-Peña, E.I.

doi:10.1016/j.jhazmat.2008.07.129

Cited by 70 publications

(27 citation statements)

References 37 publications

(62 reference statements)

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“…This critical value is close to that found by Yang and Allen [20] (25 mg S-sulfate /g dry medium ) and greater than those found for expanded schist (12 mg S-sulfate /g dry medium ) [21] and compost (12 mg S-sulfate /g dry medium ) [50]. To avoid sulfate accumulation in the biofilter, Ramirez-Saenz et al [51] suggested a periodical recirculation of water in the packed bed to limit the concentration to about 8 mg S-sulfate /g dry medium . Figure 6.…”

Section: Effect Of Sulfate Accumulation On H 2 S Removalsupporting

confidence: 82%

Removal of hydrogen sulfide in air using cellular concrete waste: Biotic and abiotic filtrations

Jaber

Couvert

Amrane

et al. 2017

Chemical Engineering Journal

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Please cite this article as: M. Ben Jaber, A. Couvert, A. Amrane, P.L. Cloirec, E. Dumont, Removal of hydrogen sulfide in air using cellular concrete waste: biotic and abiotic filtrations, Chemical Engineering Journal (2017), doi: http://dx.doi.org/10. 1016/j.cej.2017.03.014 This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting proof before it is published in its final form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain. AbstractThe objective of this study was to investigate the removal of hydrogen sulfide (H 2 S) present in air using cellular concrete waste as the packing material. Air filtration was performed under biotic and abiotic conditions. Experiments were carried out in a laboratory-scale PVC column (internal diameter of 300 mm) filled with a volume of 70 L of cellular concrete (1 m height).The polluted air flow was generated at 4 m 3 h -1 corresponding to an Empty Bed Residence Time (EBRT) of 63 s. In dry conditions without biomass (abiotic conditions), cellular concrete can be an effective medium for the treatment of H 2 S in air. For an H 2 S concentration of 100 ppmv, the removal efficiency was around 70 % (Elimination Capacity (EC) of 5.6 g m -3 h -1 ). This finding can be explained by the physicochemical reactions that can take place between H 2 S and the cellular concrete components (mainly CaO, CaCO 3 and Fe 2 O 3 ).However, interactions between cellular concrete and H 2 S are not yet fully understood. Used as a packing material for H 2 S biofiltration (biotic conditions), cellular concrete waste efficiently 2 treated (Removal Efficiency = 100 %) high concentrations of H 2 S (up to 133 ppmv corresponding to an EC of up to 10.5 g m -3 h -1 ). Physicochemical and biological mechanisms explaining H 2 S removal seem to occur simultaneously in the biofilter. At an EBRT of 63 s, the maximal elimination capacity (EC max ) was 17.8 g m -3 h -1 . A packed bed of cellular concrete also presents a satisfactory mechanical behavior with low pressure drops.

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Section: Effect Of Sulfate Accumulation On H 2 S Removalsupporting

confidence: 82%

Removal of hydrogen sulfide in air using cellular concrete waste: Biotic and abiotic filtrations

Jaber

Couvert

Amrane

et al. 2017

Chemical Engineering Journal

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“…The biological removal of H 2 S from biogas has been mainly studied under aerobic conditions [5][6][7][8], with very few studies carried out under anoxic conditions [9][10][11][12][13][14]. One advantage of anoxic BTFs over aerobic BTFs is that the biogas is not diluted with air and therefore the methane (CH 4 ) concentration is not reduced [6,13].…”

Section: Introductionmentioning

confidence: 99%

Biogas biodesulfurization in an anoxic biotrickling filter packed with open-pore polyurethane foam

Fernández

Ramírez

Gómez

et al. 2014

Journal of Hazardous Materials

105

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“…Sample ports were located in the output and input of the gas stream. For H 2 S degradation experiments, the biofiltration system was fed at the top with an air-diluted gas stream originated from the ADR, as previously reported (Ramirez-Saenz et al, 2009). Periodic water additions (once a week) were used to control moisture loss and to avoid SO 4 -2 accumulation.…”

Section: Biofiltration Systemmentioning

confidence: 99%

“…The biodegradation of different loadings of acetic and propionic acids as individual substrates were also evaluated in the lava rock biofilter as it as previously described elsewhere (Ramirez-Saenz et al, 2009). …”

Section: H 2 S Elimination From the Biogas Stream Using A Biofiltratimentioning

confidence: 99%

Biogas Production and Cleanup by Biofiltration for a Potential Use as an Alternative Energy Source

García-Peña¹,

Nakauma-Gonzalez²,

Zárate-Segura³

2012

Biogas

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H2S and volatile fatty acids elimination by biofiltration: Clean-up process for biogas potential use

Cited by 70 publications

References 37 publications

Removal of hydrogen sulfide in air using cellular concrete waste: Biotic and abiotic filtrations

Removal of hydrogen sulfide in air using cellular concrete waste: Biotic and abiotic filtrations

Biogas biodesulfurization in an anoxic biotrickling filter packed with open-pore polyurethane foam

Biogas Production and Cleanup by Biofiltration for a Potential Use as an Alternative Energy Source

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