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Sorbents for hydrogen sulfide capture from biogas at low temperature: a review

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Abstract

Biogas, e.g., biomethane, is produced by fermentation of organic matter and can be used as an alternative fuel or as a raw material for the production of hydrogen and syngas. However, biogas includes hydrogen sulfide (H2S) as a byproduct of fermentation. Hydrogen sulfide is toxic, has a foul odor, corrodes equipments, and deactivates catalysts. Thus, hydrogen sulfide has to be removed before biogas combustion or conversion. Compared with classical wet desulfurization, low-temperature dry desulfurization is of interest due to higher desulfurization, simpler operation, less pollution, and less energy consumption. Here, we review solid sorbents for low-temperature biogas desulfurization, such as activated carbon, metal-exchanged zeolites, single metal oxides, composite metal oxides, ordered mesoporous silica, and metal–organic frameworks.

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Abbreviations

AC:

Activated carbon

BET:

Brunauer–Emmett–Teller

Cu-ETS-2:

Engelhard titanosilicate-2

3DOM:

Three-dimensionally ordered macropore

DFT:

Density functional theory

DRS:

Diffuse reflectance spectroscopy

ESR:

Electron spin resonance

FESEM:

Field emission scanning electron microscopy

MCM:

Mobil composition of matters

MDEA:

Methyl-diethyl-amine

MIL:

Matériaux Institut Lavoisier

MOFs:

Metal–organic frameworks

MSU:

Michigan State University

MWCNTs:

Multiwall carbon nanotubes

OFA:

Oil fly ash

PCSs:

Porous carbon spheres

PEI:

Polyethylenimine

SBA:

Santa Barbara amorphous material

SEM:

Scanning electron microscope

TEM:

Transmission electron microscope

TICs:

Toxic industrial chemicals

TMA:

Tetramethylammonium

TPD:

Temperature programmed desorption

UV–Vis:

Ultraviolet–visible

VOCs:

Volatile organic compounds

XRD:

X-ray diffraction

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Acknowledgements

This work is supported by the National Natural Science Foundation of China (51576094; U1710108) and the Fund for Senior Personnel of Jiangsu University (18JDG017).

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Correspondence to Yangxian Liu.

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Liu, D., Li, B., Wu, J. et al. Sorbents for hydrogen sulfide capture from biogas at low temperature: a review. Environ Chem Lett 18, 113–128 (2020). https://doi.org/10.1007/s10311-019-00925-6

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  • DOI: https://doi.org/10.1007/s10311-019-00925-6

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