Gaseous Hydrogen Sulfide Removal Using Macroalgae Biochars Modified Synergistically by H2SO4/H2O2
Abstract
Abstract A novel H2SO4/H2O2 combining modification was used to modify two kinds of macroalgae (Sargassum and Enteromorpha) biochars to remove gaseous H2S. Desulfurization performance, mechanism, and kinetics of the biochars were studied. The proposed H2SO4/H2O2 combining modification greatly improves the desulfurization performance of biochars. Compared with common adsorbents, the biochars achieve better desulfurization effects. Desulfurization processes follow the pseudo‐first‐order model and external mass transfer is the control step. H2S adsorption over biochars means physical adsorption, while chemical adsorption is auxiliary. H2SO4/H2O2 combining modification improves the desulfurization performance by enhancing the pore structure and increasing O‐containing functional groups.
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ABB has been utilized for capture of hydrogen sulfide (H2S), with adsorption capacities exceeding 8500 mg/kg when activated with H2SO4/H2O2.
“Similarly, ABB has been utilized in the capture of hydrogen sulfide (H 2 S), a toxic gas commonly found in industrial emissions, with adsorption capacities exceeding 8500 mg/kg when activated with H 2 SO 4 /H 2 O 2 [76].”
From Algal-Based Carbonaceous Materials for Environmental Remediation: Advances in Wastewater Treatment, Carbon Sequestration, and Biofuel Applications (2025) · cites this paper as [76]
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- Authors
- Chen, H., Han, X., & Liu, Y.
- Affiliations
- Jiangsu University (CN)
- Corresponding author
- Liu, Yangxian
- Venue
- Chemical Engineering & Technology
- Publisher
- Wiley
- Published
- 2021-03
- Volume
- 44
- Issue
- 4
- Pages
- 698-709
- ISSN
- 0930-7516 (ISSN-L)
- 1521-4125
- OpenAlex
- W3127904547
- Cited by
- 22
- References
- 70
- Citations by year
- 2025: 7 · 2024: 5 · 2023: 5 · 2022: 4 · 2021: 1
- FWCI
- 1.60
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Chemical Engineering & Technology (publishedVersion)
- Funders
- National Natural Science Foundation of China (U1710108)
- Jiangsu University
- Topics
- Physical Sciences › Engineering › Mechanical Engineering › Industrial Gas Emission Control
- Physical Sciences › Chemical Engineering › Process Chemistry and Technology › Odor and Emission Control Technologies
- Physical Sciences › Environmental Science › Water Science and Technology › Adsorption and biosorption for pollutant removal
- Keywords
- Sargassum, Enteromorpha, biochar modification, desulfurization, H2S adsorption, adsorption kinetics, pseudo-first-order kinetics, external mass transfer, pore structure, oxygen-containing functional groups, physical and chemical adsorption
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