Removal of H2S by a continuous microalgae-based photosynthetic biogas upgrading process

Leslie Meier; Dana Stará; Jan Bartacek; David Jeison

doi:10.1016/j.psep.2018.07.014

Removal of H₂S by a continuous microalgae-based photosynthetic biogas upgrading process

Leslie Meier, Dana Stará, Jan Bartacek, David Jeison

SCHOOL OF BIOCHEMICAL ENGINEERING

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36 Scopus citations

Abstract

The capacity of a biogas upgrading system based on the microalgae Chlorella sorokiniana was evaluated. A system composed of a photobioreactor connected to an absorption column was tested. Two continuous systems were operated with real biogas. One with biogas containing 1800–3500 ppm_v of H₂S, another one without H₂S. The tested system provided 98% and 100% removal levels for CO₂ and H₂S, respectively. Removal of H₂S was the result of oxidation to sulfate, as a consequence of the high concentration of dissolved oxygen. Comparison of both systems showed no signs of inhibition due to H₂S presence in the biogas. It is concluded then that a microalgae-based biogas upgrading system would not only provide conditions for CO₂ removal, but also for H₂S oxidation.

Original language	English
Pages (from-to)	65-68
Number of pages	4
Journal	Process Safety and Environmental Protection
Volume	119
DOIs	https://doi.org/10.1016/j.psep.2018.07.014
State	Published - Oct 2018

Keywords

Biogas
HS
Microalgae
Upgrading

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10.1016/j.psep.2018.07.014

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title = "Removal of H2S by a continuous microalgae-based photosynthetic biogas upgrading process",

abstract = "The capacity of a biogas upgrading system based on the microalgae Chlorella sorokiniana was evaluated. A system composed of a photobioreactor connected to an absorption column was tested. Two continuous systems were operated with real biogas. One with biogas containing 1800–3500 ppmv of H2S, another one without H2S. The tested system provided 98% and 100% removal levels for CO2 and H2S, respectively. Removal of H2S was the result of oxidation to sulfate, as a consequence of the high concentration of dissolved oxygen. Comparison of both systems showed no signs of inhibition due to H2S presence in the biogas. It is concluded then that a microalgae-based biogas upgrading system would not only provide conditions for CO2 removal, but also for H2S oxidation.",

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AU - Meier, Leslie

AU - Stará, Dana

AU - Bartacek, Jan

AU - Jeison, David

PY - 2018/10

Y1 - 2018/10

N2 - The capacity of a biogas upgrading system based on the microalgae Chlorella sorokiniana was evaluated. A system composed of a photobioreactor connected to an absorption column was tested. Two continuous systems were operated with real biogas. One with biogas containing 1800–3500 ppmv of H2S, another one without H2S. The tested system provided 98% and 100% removal levels for CO2 and H2S, respectively. Removal of H2S was the result of oxidation to sulfate, as a consequence of the high concentration of dissolved oxygen. Comparison of both systems showed no signs of inhibition due to H2S presence in the biogas. It is concluded then that a microalgae-based biogas upgrading system would not only provide conditions for CO2 removal, but also for H2S oxidation.

AB - The capacity of a biogas upgrading system based on the microalgae Chlorella sorokiniana was evaluated. A system composed of a photobioreactor connected to an absorption column was tested. Two continuous systems were operated with real biogas. One with biogas containing 1800–3500 ppmv of H2S, another one without H2S. The tested system provided 98% and 100% removal levels for CO2 and H2S, respectively. Removal of H2S was the result of oxidation to sulfate, as a consequence of the high concentration of dissolved oxygen. Comparison of both systems showed no signs of inhibition due to H2S presence in the biogas. It is concluded then that a microalgae-based biogas upgrading system would not only provide conditions for CO2 removal, but also for H2S oxidation.

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KW - Microalgae

KW - Upgrading

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JO - Process Safety and Environmental Protection

JF - Process Safety and Environmental Protection

ER -

Removal of H₂S by a continuous microalgae-based photosynthetic biogas upgrading process

Abstract

Keywords

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