H2S Adsorption from Biogas with Thermal Treatment Residues

Gasquet, Valentine; Kim, Boram; Sigot, Léa; Benbelkacem, Hassen

doi:10.1007/s12649-020-00998-3

Cited by 10 publications

(4 citation statements)

References 27 publications

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“…Moreover, the presence of metal elements undergoing oxidation during the H 2 S adsorption process can produce metal sulphates [ 47 ]. The use of metal oxides has been proven to have a significant effect on the adsorption of H 2 S gas [ 44 , 48 ].…”

Section: Resultsmentioning

confidence: 99%

Effect of Bimetallic-Activated Carbon Impregnation on Adsorption–Desorption Performance for Hydrogen Sulfide (H2S) Capture

et al. 2022

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This study reports on the impregnation of bi-metallic adsorbents based on commercial coconut activated carbon (CAC), surface-modified with metal acetate (ZnAc2), metal oxide (ZnO and TiO2), and the basic compound potassium hydroxide (KOH). The morphology of the adsorbents was then characterized with SEM-EDX, the microporosity was determined using Brunauer–Emmett–Teller (BET) analysis, the thermal stability was investigated via thermogravity analysis (TGA), and functional group analysis was undertaken with Fourier-transform infrared (FTIR) spectroscopy. These modified adsorbents were subjected to a real adsorption test for H2S capture using a 1 L adsorber with 5000 ppm H2S balanced for N2, with temperature and pressure maintained at an ambient condition. Adsorption–desorption was carried out in three cycles with the blower temperature varied from 50 °C to 150 °C as the desorption condition. Characterization results revealed that the impregnated solution homogeneously covered the adsorbent surface, effecting the morphology and properties. Based on this study, it was found that ZnAc2/TiO2/CAC_DCM showed a significant increase in adsorption capacity with the different temperatures applied for the desorption in the second cycle: 1.67 mg H2S/g at 50 °C, 1.84 mg H2S/g at 100 °C, and 1.96 mg H2S/g at 150 °C. ZnAc2/ZnO/CAC_DCM seemed to produce the lowest percentage of degradation in the three cycles for all the temperatures used in the adsorption–desorption process. Therefore, ZnAc2/ZnO/CAC_DCM has the potential to be used and commercialized for biogas purification for H2S removal.

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Section: Resultsmentioning

confidence: 99%

Effect of Bimetallic-Activated Carbon Impregnation on Adsorption–Desorption Performance for Hydrogen Sulfide (H2S) Capture

et al. 2022

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“…37 Multiple studies used pseudo-first order and pseudo-second order kinetic models for fitting experimental data on H 2 S adsorption. 27,[38][39][40][41] Furthermore, the Avrami kinetic model was shown to be suitable for H 2 S adsorption, where the system involves both physical and chemical adsorption processes. Although the applicability of the Avrami model in H 2 S removal has not been validated, several investigations on the adsorption of CO, CO 2 , NO, and SO 2 have demonstrated its practicality in describing the adsorption kinetics.…”

Section: Introductionmentioning

confidence: 99%

Unravelling the kinetics, isotherms, thermodynamics, and mass transfer behaviours of Zeolite Socony Mobil - 5 in removing hydrogen sulphide resulting from a dark fermentative biohydrogen production process

Asman,

Lutpi,

Wong

et al. 2024

Phys. Chem. Chem. Phys.

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“…Almost impossible or comes back to too expensive maintenance costs were to the necessity to purify the produced biogas of the sulfurous elements in general and the hydrogen sulfide H 2 S, especially before its use. The operating costs and/or unpredictably high H 2 S efficiencies [9][10][11].…”

Section: Introductionmentioning

confidence: 99%

New Margin-Based Biochar for Removing Hydrogen Sulfide Generated during the Anaerobic Wastewater Treatment

Gaga

Benmessaoud

Kara

et al. 2022

Water

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The present research concerns the development of a new device and process intended for the purification and treatment of sulfurous elements, and more particularly, of hydrogen sulfide (H2S) from the biogas produced at the time of the anaerobic fermentation in the purification stations. The controlled dumps or any other unit are likely to produce biogas with concentrations of H2S harmful to the operation of the machines for the valorization of the produced biogas or deodorization. This device uses new biochar from a mixture of dehydrated digested sludge from sewage treatment plants and margins from traditional crushing units, followed by biological treatment in a liquid medium at a controlled temperature. The liquid medium is based on a margin (nutrient) with culture support (large granules of biochar) in suspension by the injection under the pressure of biogas coming from the biochar filter. Physico-chemical characterization of the biochar and a test practiced on the new device of raw biogas treatment were realized. The results showed that the newly synthesized biochar has a low specific surface and a highly undeveloped porosity. The spectrum corresponding to the images of the biochar reveals the presence of C, O, N, Al, Si, P, and Fe, as significant elements with the following respective percentages: 37.62%, 35.78%, 1.87%, 4.26%, 7.33%, 8.56%, and 4.58%. It is important to note that the C content of the biochar thus synthesized found by EDX is quite comparable to that estimated from ATG. Biogas treatment test results on the prototype object of the invention eliminated 97% of the H2S from the biogas produced.

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H2S Adsorption from Biogas with Thermal Treatment Residues

Cited by 10 publications

References 27 publications

Effect of Bimetallic-Activated Carbon Impregnation on Adsorption–Desorption Performance for Hydrogen Sulfide (H2S) Capture

Effect of Bimetallic-Activated Carbon Impregnation on Adsorption–Desorption Performance for Hydrogen Sulfide (H2S) Capture

Unravelling the kinetics, isotherms, thermodynamics, and mass transfer behaviours of Zeolite Socony Mobil - 5 in removing hydrogen sulphide resulting from a dark fermentative biohydrogen production process

New Margin-Based Biochar for Removing Hydrogen Sulfide Generated during the Anaerobic Wastewater Treatment

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