High-temperature separation of H2S from producer gas produced of biomass gasification by artificially prepared sorbents

Machač, Pavel; Martinec, Marek

doi:10.1007/s13762-018-2050-y

Cited by 2 publications

(2 citation statements)

References 15 publications

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“…During the adsorption process, the biogas is contacted with an adsorbent in which the H 2 S is collected on the surface and interior microstructure of the adsorbent. Several types of adsorbents have been proposed in the literature, including metal oxides, silica gel, zeolites, synthetic resins, and activated carbon [8,[15][16][17][18][19][20][21]. Activated carbon has been widely used for the treatment of wastewater and waste gases.…”

Section: Introductionmentioning

confidence: 99%

Removal of hydrogen sulfide from biogas using activated carbon synthesized from different locally available biomass wastes - a case study from Palestine

et al. 2020

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The main aim of this study was to remove hydrogen sulfide (H 2 S) from biogas by adsorption using synthesized activated carbon prepared using locally available biomass. The effect of the type of precursors, impregnation reagent and bed height was studied in continuous reactors. Three types of biomass wastes (almond shells, eucalyptus and coffee grains) were collected, grinded, sieved, pyrolyzed at 500°C and impregnated with chemical reagents such as potassium hydroxide or zinc chloride. Adsorption tests were performed using a fixed bed filter filled with the produced activated carbon. The highest biochar yield of 36% was obtained eucalyptus followed by almond shells (28.5%) and coffee grains (24%), respectively. The highest adsorption capacity and removal efficiency were obtained with eucalyptus followed by almond shells and coffee grains, respectively. For instance, eucalyptus showed an adsorption capacity of ~690 (mg hydrogen sulfide/g adsorbent) followed by almond (230 mg hydrogen sulfide/g adsorbent) and coffee grains (22 mg hydrogen sulfide/g adsorbent). As an impregnation reagent, potassium hydroxide gave the highest adsorption efficiency and capacity than zinc chloride. Furthermore, the breakthrough time with KOH (180 min) was higher than ZnCl 2 (70 min). Increasing the bed height during continuous breakthrough tests increased the adsorption capacity and hydrogen sulfide removal efficiency. The results of this study showed that the adsorption efficiency of the synthesized activated carbon and consequently the hydrogen sulfide removal efficiency could be fine-tuned by selecting an appropriate biomass precursor and proper impregnation reagent.

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Section: Introductionmentioning

confidence: 99%

Removal of hydrogen sulfide from biogas using activated carbon synthesized from different locally available biomass wastes - a case study from Palestine

et al. 2020

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“…One of the most effective ways to purify gases from sulfurcontaining components is sorption on solid materials. The main sorbents for gas purification are zeolites [2][3][4], active coals [5,6], materials based on iron-manganese ores [7,8] and other new synthesized sorbents [9].…”

Section: Introductionmentioning

confidence: 99%

Prospects for the Use of the Sorbent for Purification of Gases from Sulfur-Containing Components on the Basis of Manganese Ore

Bolotov

Черемисина

Ponomareva

et al. 2020

KEM

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The physical and chemical properties of "loose" manganese ore of Ulu-Telyak Deposit of the Republic of Bashkortostan for the possibility of its use as an effective sorbent for purification of exhaust gases of metallurgical, chemical, oil refining, mining and other industries are studied. Analyses were carried out on the phase composition, chemical composition, determined the specific surface area of the pores and thermogravimetric method of water content. The process of sorption of a gas mixture containing hydrogen sulfide, methyl and ethyl mercaptans was also studied. The results of the experiments concluded that the prospects of using this "loose" manganese ore for the sorption of sulfur-containing gases.

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High-temperature separation of H2S from producer gas produced of biomass gasification by artificially prepared sorbents

Cited by 2 publications

References 15 publications

Removal of hydrogen sulfide from biogas using activated carbon synthesized from different locally available biomass wastes - a case study from Palestine

Removal of hydrogen sulfide from biogas using activated carbon synthesized from different locally available biomass wastes - a case study from Palestine

Prospects for the Use of the Sorbent for Purification of Gases from Sulfur-Containing Components on the Basis of Manganese Ore

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