Biological removal of H2S gas in a semi-pilot scale biotrickling filter: Optimization of various parameters for efficient removal at high loading rates and low pH conditions

Reddy, C. Nagendranatha; Bae, Sungwoo; Min, Booki

doi:10.1016/j.biortech.2019.121328

Cited by 25 publications

(2 citation statements)

References 34 publications

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“…Besides H 2 S, BTF can efficiently treat a mixture of pollutants (H 2 S, reduced sulphur compounds, volatile organic compounds [VOCs]) simultaneously. [155] The BTF has great potential for H 2 S removal by generating elementary sulphur as the main product of desulphurization. [156,157] Biological bubble-columns (BBC) have the function of recycling the accumulated elemental sulphur without causing column clogging.…”

Section: H 2 S Removal Technologies By Biological Processesmentioning

confidence: 99%

Updates on biogas enrichment and purification methods: A review

et al. 2022

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The market for biogas production has been increasing every year all over the world. The use of biogas as an energy vector is accomplished through the most diverse applications, such as direct burning (thermal energy), internal combustion engines, and fuel cells. Besides direct applications, biogas can be used as a raw material for producing high added-value products, such as molecular hydrogen and renewable hydrocarbons, through a new enterprise concept, the biorefineries. Purity and quality control are determinant factors that enable the decision-making regarding the end use of biogas. Physical, chemical, and biological methods can be used in biogas upgrading processes as well as a combination of different techniques. This review aims to deepen the knowledge about relevant technologies for biogas purification. It also addresses the most efficient and feasible methods, challenges to be overcome, and main demands for future studies. Therefore, the presentation, in a detailed way, of the synergistic effects caused by components contained in natural biogas and the combinatorial methods for removing these contaminants, differentiates this from other works that approach only the purification techniques but do not point out their problems and causes more comprehensively. Thus, studies related to the combined effects of contaminants would be interesting in future works.

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Section: H 2 S Removal Technologies By Biological Processesmentioning

confidence: 99%

Updates on biogas enrichment and purification methods: A review

et al. 2022

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“…Another strategy consists in oxidizing sulfur from hydrogen sulfide to higher oxidation states (4+ or 6+) and recovering it as sulfuric acid or sulfites, but mostly as sulfuric acid and sulfate [ 16 , 17 , 18 , 19 ]. Biological degradation can also be an economical and effective means of hydrogen sulfide removal [ 20 ], while membrane or hybrid processes involving membranes have become more and more popular [ 21 , 22 , 23 , 24 , 25 , 26 , 27 , 28 , 29 ].…”

Section: Introductionmentioning

confidence: 99%

Hydrogen Sulphide Sequestration with Metallic Ions in Acidic Media Based on Chitosan/sEPDM/Polypropylene Composites Hollow Fiber Membranes System

et al. 2023

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This paper presents the preparation and characterization of composite membranes based on chitosan (Chi), sulfonated ethylene–propylene–diene terpolymer (sEPDM), and polypropylene (PPy), and designed to capture hydrogen sulfide. The Chi/sEPDM/PPy composite membranes were prepared through controlled evaporation of a toluene dispersion layer of Chi:sEPDM 1;1, w/w, deposited by immersion and under a slight vacuum (100 mmHg) on a PPy hollow fiber support. The composite membranes were characterized morphologically, structurally, and thermally, but also from the point of view of their performance in the process of hydrogen sulfide sequestration in an acidic media solution with metallic ion content (Cu2+, Cd2+, Pb2+, and/or Zn2+). The operational parameters of the pertraction were the pH, pM, matrix gas flow rate, and composition. The results of pertraction from synthetic gases mixture (nitrogen, methane, carbon dioxide) indicated an efficient removal of hydrogen sulfide through the prepared composite membranes, as well as its immobilization as sulfides. The sequestration and the recuperative separation, as sulfides from an acid medium, of the hydrogen sulfide reached up to 96%, decreasing in the order: CuS > PbS > CdS > ZnS.

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