Hydrogen sulfide removal from livestock biogas by a farm-scale bio-filter desulfurization system

2013 ◽  
Vol 67 (6) ◽  
pp. 1288-1293 ◽  
Author(s):  
J.-J. Su ◽  
Y.-C. Chang ◽  
Y.-J. Chen ◽  
K.-C. Chang ◽  
S.-Y. Lee
Keyword(s):  
Experimental Data ◽  
Power Generation ◽  
Hydrogen Sulfide ◽  
Removal Efficiency ◽  
Removal Rate ◽  
H2s Removal ◽  
Hydrogen Sulfide Removal ◽  
Farm Scale ◽  
Pig Farm ◽  
Sulfur Oxidizing

A farm-scale biogas desulfurization system was designed and tested for H2S removal efficiency from livestock biogas. This work assesses the H2S removal efficiency of a novel farm-scale biogas bio-desulfurization system (BBS) operated for 350 days on a 1,000-head pig farm. Experimental data demonstrated that suitable humidity and temperature can help sulfur-oxidizing bacteria to form active bio-films on the bio-carriers. The daily average removal rate increased to 879.16 from 337.75 g-H2S/d with an average inlet H2S concentration of 4,691 ± 1,532 mg/m3 in biogas. Thus, the overall (0–350 days) average H2S removal efficiency exceeded 93%. The proposed BBS overcomes limitations of H2S in biogas when utilizing pig farm biogas for power generation and other applications.

scholarly journals Removal of Hydrogen Sulfide in Septic Tanks for Treating Black Water via an Immobilized Media of Sulfur-Oxidizing Bacteria

2020 ◽  
Vol 17 (3) ◽  
pp. 684
Author(s):  
Jeong-Hee Kang ◽  
Hyeong-Gyu Namgung ◽  
Jeong-Il Cho ◽  
Sung Soo Yoo ◽  
Bong-Jae Lee ◽  
...  
Keyword(s):  
Hydrogen Sulfide ◽  
Removal Efficiency ◽  
Treatment Plant ◽  
Aeration Rate ◽  
H2s Removal ◽  
Septic Tanks ◽  
Black Water ◽  
Cultivation Period ◽  
Sulfur Oxidizing ◽  
Sulfur Oxidizing Bacteria

In South Korea, the installation of septic tanks for treating black water (STBW) is regulated even in sewage treatment areas to prevent the black water deposition in combined sewers. STBWs in which black water is anaerobically decomposed generate high concentrations of hydrogen sulfide (H2S). In this study, an immobilized media of sulfur-oxidizing bacteria (SOB) was used to remove the H2S. SOB media was prepared by using activated sludge collected from a wastewater treatment plant. Prior to field application, an appropriate cultivation period and aeration rate for SOB activation were estimated through a laboratory-scale test. The SOB was activated after a 23-day cultivation period and an aeration rate of 0.25 L-water/L-air/min. Moreover, the maximum H2S removal efficiency was observed at a cultivation period of 43 days and an aeration rate of 0.38 L-water/L-air/min. Then, the SOB media was installed on STBWs of various capacities. The H2S removal efficiency was compared between with and without SOB media. The maximum H2S elimination capacity with SOB media was 12.3 g/m3/h, which was approximately three times higher than without SOB media. Furthermore, the energy efficiency and oxidation rate were also three times higher with SOB, demonstrating the applicability of SOB for H2S removal in STBW.

scholarly journals Comparing Hydrogen Sulfide Removal Efficiency in a Field-Scale Digester Using Microaeration and Iron Filters

Energies ◽  
2020 ◽  
Vol 13 (18) ◽  
pp. 4793 ◽  
Author(s):  
Joanna K. Huertas ◽  
Lawrence Quipuzco ◽  
Amro Hassanein ◽  
Stephanie Lansing
Keyword(s):  
Hydrogen Sulfide ◽  
Removal Efficiency ◽  
Cost Effective ◽  
Ambient Air ◽  
Small Scale ◽  
Field Scale ◽  
H2s Removal ◽  
Hydrogen Sulfide Removal ◽  
Order Of Magnitude ◽  
Treatment Vessel

Biological desulfurization of biogas from a field-scale anaerobic digester in Peru was tested using air injection (microaeration) in separate duplicate vessels and chemical desulfurization using duplicate iron filters to compare hydrogen sulfide (H2S) reduction, feasibility, and cost. Microaeration was tested after biogas retention times of 2 and 4 h after a single injection of ambient air at 2 L/min. The microaeration vessels contained digester sludge to seed sulfur-oxidizing bacteria and facilitate H2S removal. The average H2S removal efficiency using iron filters was 32.91%, with a maximum of 70.21%. The average H2S removal efficiency by iron filters was significantly lower than microaeration after 2 and 4 h retention times (91.5% and 99.8%, respectively). The longer retention time (4 h) resulted in a higher average removal efficiency (99.8%) compared to 2 h (91.5%). The sulfur concentration in the microaeration treatment vessel was 493% higher after 50 days of treatments, indicating that the bacterial community present in the liquid phase of the vessels effectively sequestered the sulfur compounds from the biogas. The H2S removal cost for microaeration (2 h: $29/m3 H2S removed; and 4 h: $27/m3 H2S removed) was an order of magnitude lower than for the iron filter ($382/m3 H2S removed). In the small-scale anaerobic digestion system in Peru, microaeration was more efficient and cost effective for desulfurizing the biogas than the use of iron filters.

Research on the Removal Results of Hydrogen Sulfide of the Treatment of Coal Gasification Wastewater Biogas in the Anaerobic Biotrickling Filter

2012 ◽  
Vol 610-613 ◽  
pp. 2000-2005
Author(s):  
Chun Yan Xu ◽  
Hong Jun Han
Keyword(s):  
Hydrogen Sulfide ◽  
Removal Efficiency ◽  
Flow Rate ◽  
Retention Time ◽  
Operating Parameters ◽  
Inlet Flow ◽  
H2s Removal ◽  
Outlet Concentration ◽  
Volume Load ◽  
Inlet Flow Rate

The uncertainty of operating parameters hinders the practical application of the biological desulfurization. To solve this problem, this study which was conducted in room temperature, pH around seven conditions, investigated the effects of the operating parameters on the hydrogen sulfide (H2S) removal performance in the biotrickling filter, including inlet H2S concentration, inlet flow rate or gas retention time, inlet volume load and circulating liquid spraying flux. The results showed that, the inlet H2S concentration should be controlled within 800mg/m3, 650mg/m3, 400mg/m3, 300mg/m3 respectively while the inlet flow rate was 150L/h, 200L/h, 250L/h, 300L/h, at those conditions, the outlet H2S concentrations were lower than 8mg/m3 and the H2S removal efficiencies were more than 98%. The optimum gas retention time was 12.37s, corresponding to the inlet flow rate of 200L/h, at this time, even if the inlet H2S concentration as high as 700mg/m3, the removal efficiency could be still more than 98%, the outlet concentration of H2S was only 13.1mg/m3. The maximum inlet volume load was 130g/(m3•h), in this condition, the outlet concentration of H2S could be controlled below 12mg/m3, the removal efficiency could above 98.4%.

scholarly journals Estimation of hydrogen sulfide removal efficiency with granulated coal ash applied to eutrophic marine sediment using a simplified simulation model

2015 ◽  
Vol 94 (1-2) ◽  
pp. 55-61 ◽  
Author(s):  
Satoshi Asaoka ◽  
Tamiji Yamamoto ◽  
Hironori Yamamoto ◽  
Hideo Okamura ◽  
Kazutoshi Hino ◽  
...  
Keyword(s):  
Hydrogen Sulfide ◽  
Simulation Model ◽  
Removal Efficiency ◽  
Marine Sediment ◽  
Coal Ash ◽  
Sulfide Removal ◽  
Hydrogen Sulfide Removal

scholarly journals HYDROGEN SULFIDE REMOVAL FROM BIOGAS BY SULFUR OXIDIZING BACTERIA UNDER MICROAEROPHILIC ENVIRONMENT IN THE ANAEROBIC DIGESTER

2009 ◽  
Vol 65 (2) ◽  
pp. 104-113 ◽  
Author(s):  
Takuro KOBAYASHI ◽  
Yu-You LI ◽  
Kengo KUBOTA ◽  
Hideki HARADA ◽  
Takeki MAEDA ◽  
...  
Keyword(s):  
Hydrogen Sulfide ◽  
Anaerobic Digester ◽  
Sulfide Removal ◽  
Hydrogen Sulfide Removal ◽  
Sulfur Oxidizing ◽  
Sulfur Oxidizing Bacteria

scholarly journals Adsorption of Hydrogen Sulfide (H2S) from Municipal Solid Waste by Using Biochars

2021 ◽  
Vol 12 (6) ◽  
pp. 8057-8069
Keyword(s):  
Hydrogen Sulfide ◽  
Municipal Solid Waste ◽  
Solid Waste ◽  
Removal Efficiency ◽  
Rice Hull ◽  
Banana Peel ◽  
Surface Functional Group ◽  
Adsorption Method ◽  
H2s Removal ◽  
Ability To Act

The emission of hydrogen sulfide (H2S) from municipal solid waste is one of the environmental issues that raised the public’s attention and awareness. Exposure to H2S that brings a foul smell of rotten eggs will cause headaches, irritation, dizziness, fatigue, and even death if the concentration of H2S is too high. The study’s goals are to investigate the properties of biochars made from rice hulls, banana peels, and sawdust; to compare the biochars’ physical and chemical properties; and establish the H2S removal efficiency of the three biochars. Biochars derived from rice hull (RHB-500), banana peel (BPB-550), and sawdust (SDB-500) by pyrolysis were used as the adsorbents. The biochar yield, pH, ash content, surface functional group, and morphology of the biochars produced were investigated. In this study, H2S was synthesized by mixing food waste and soil in the experimental column. The H2S produced was reduced by the adsorption method. The removal efficiencies of H2S for each biochar were determined by allowing the synthetic H2S to flow through the two columns that were packed with sand (act as control) and biochars, respectively. All biochars were alkaline, and BPB-550 had the highest pH, followed by SDB-500 and finally RHB-500. The order for removal efficiency of H2S (>94%) is BPB-550 > SDB-500 > RHB-500. Overall, the biochars derived from biomass had a strong ability to act as the adsorbents for H2S removal.

scholarly journals The Removal of Hydrogen Sulfide in the Biodesulfurization System Using Granulated Phosphogypsum

2016 ◽  
Vol 18 (1) ◽  
pp. 47 ◽  
Author(s):  
L.D. Plyatsuk ◽  
Ye.Yu. Chernysh
Keyword(s):  
Hydrogen Sulfide ◽  
Sulfur Compounds ◽  
Gas Cleaning ◽  
Hydrogen Sulfide Removal ◽  
Support Medium ◽  
New Type ◽  
Sulfur Oxidizing ◽  
Biotechnological Processes ◽  
First Time

<p>This paper focuses on the study the possibility of phosphogypsum utilization in the biotechnological processes for hydrogen sulfide removal from biogas. The optimal parameters of the process of granulation dihydrate phosphogypsum were determined. The biochemical characteristics of granular carrier based on phosphogypsum was studied. The efficiency of the gas cleaning under immobilization of the thiobacillus on the surface support medium was analyzed. The main parameters of the gas cleaning process were determined. The degree of H<sub>2</sub>S removal from a gas stream was 98.22% at pH = 5.0 and optimum empty bed residence time of 10 h. The possibility of the phosphogypsum using as a new type of mineral support medium for the associations of sulfur-oxidizing microorganisms developing was determined in the process of biological gases purification from sulfur compounds. It was the first time both theoretically and experimentally proved that the mineral support on the basis of phosphogypsum has a sufficient micro and macro elements that necessary for the thiobacteria development. Thus it is eliminating the need to supply additional sources of feeding organisms to biofilter. The gas purification biotechnology with support medium using on the basis of phosphogypsum was developed. This technological solution which allows providing the high quality of gas stream purification with a high content of sulfur compounds, particularly hydrogen sulfide (more than 10% of the gas total volume).</p>

scholarly journals Performance of alkaline impregnated biochar derived from rice hull for hydrogen sulfide removal from gas

2020 ◽  
Vol 26 (6) ◽  
pp. 200452-0
Author(s):  
Dong-Cheon Seo ◽  
Ruifeng Guo ◽  
Dong-Hoon Lee
Keyword(s):  
Hydrogen Sulfide ◽  
Gas Flow ◽  
Rice Hull ◽  
H2s Removal ◽  
Continuous Adsorption ◽  
Removal Capacity ◽  
Hydrogen Sulfide Removal ◽  
Wide Range ◽  
Naoh Solution ◽  
Coconut Shell Activated Carbon

Hydrogen sulfide (H2S) causes malodor, health disorders, and equipment corrosion, but is a constituent of a wide range of valuable gases. For efficient H2S removal, biochars derived from rice hull and loaded with four alkalis (NaOH, KOH, Na2CO3, and K2CO3) were prepared by impregnation. The H2S removal characteristics were investigated by continuous adsorption column tests. The alkaline impregnated biochars (IBCs) showed superior H2S removal performance compared to that of coconut shell activated carbon (AC) due to the enhanced chemical adsorption. The removal capacity varied depending on the alkalis and their concentration of aqueous solution for impregnation. The IBC with 5 M of NaOH solution afforded the highest removal capacity of 24.41 mg/g, which greatly exceeded 7.65 mg/g of the AC. Moreover, the height-to-diameter ratio, inlet gas flow rate, H2S gas concentration, temperature, and inlet gas moisture influenced the adsorption capacity, which mainly affect the contact and reaction between H2S and the alkali impregnated on rice hull biochar.

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