Removal of hydrogen sulfide and ammonia from gas mixtures by co-immobilized cells using a new configuration of two biotrickling filters

2009 ◽  
Vol 59 (7) ◽  
pp. 1353-1359 ◽  
Author(s):  
M. Ramirez ◽  
J. M. Gómez ◽  
G. Aroca ◽  
D. Cantero
Keyword(s):  
Hydrogen Sulfide ◽  
Polyurethane Foam ◽  
Removal Efficiency ◽  
Immobilized Cells ◽  
The Other ◽  
Biotrickling Filter ◽  
Gas Mixture ◽  
Simultaneous Removal ◽  
Thiobacillus Thioparus ◽  
Biotrickling Filters

The simultaneous removal of H2S and NH3 was investigated using two biotrickling filters packed with polyurethane foam cubes. One biotrickling filter was inoculated with Thiobacillus thioparus ATCC 23645 for the removal of H2S (BTT) and the other filter with Nitrosomonas europaea ATCC 19718 for the removal of NH3 (BNE). Three different configurations were studied by modification of the gas line and recirculation medium line. The best results were obtained with the BNE biotrickling filter after the co-immobilization of the two bacteria. A removal efficiency of 100% for 230 ppmv of NH3 and 129 ppmv of H2S was reached at an EBRT of 60 seconds. The results obtained show that it is possible to co-immobilize both microorganisms using the same recirculation medium and remove successfully H2S and NH3 from a gas mixture.

Removal of hydrogen sulfide by immobilized Thiobacillus thioparus in a biotrickling filter packed with polyurethane foam

2009 ◽  
Vol 100 (21) ◽  
pp. 4989-4995 ◽  
Author(s):  
Martín Ramírez ◽  
José Manuel Gómez ◽  
Germán Aroca ◽  
Domingo Cantero
Keyword(s):  
Hydrogen Sulfide ◽  
Polyurethane Foam ◽  
Biotrickling Filter ◽  
Thiobacillus Thioparus

scholarly journals Biological elimination of a high concentration of hydrogen sulfide from landfill biogas

2021 ◽  
Author(s):  
Rania Ibrahim ◽  
Abdessamad El Hassni ◽  
Shahram Navaee-Ardeh ◽  
Hubert Cabana
Keyword(s):  
Hydrogen Sulfide ◽  
Pilot Scale ◽  
Biotrickling Filter ◽  
High Concentration ◽  
Two Phase ◽  
Filter System ◽  
Biotrickling Filters ◽  
In Series ◽  
Maximum Elimination Capacity ◽  
Landfill Biogas

Abstract Hydrogen sulfide (H2S) is one of the main contaminants found in biogas which is one of the end products of the anaerobic biodegradation of proteins and other sulfur-containing compounds in solid waste. The presence of H2S is one of the factors limiting the valorization of biogas. To valorize biogas, H2S and other contaminants must be removed. This study evaluated the performance of a pilot-scale biotrickling filter system on H2S removal from landfill biogas. The biotrickling filter system, which was packed with stainless-steel pall rings and inoculated with an H2S-oxidizing consortium, was designed to process 1 to 10 SCFM of biogas and used to determine the removal efficiency of a high concentration of hydrogen sulfide from landfill biogas. The biofiltration system consisted of two biotrickling filters connected in series. Results indicate that the biofiltration system reduced H2S concentration by 94–97% without reduction of the methane concentration in the outlet biogas. The inlet concentration of hydrogen sulfide, supplied to the two-phase bioreactor, was in the range of 900 to 1500 ppmv. The hydraulic retention times (HRT) of the two biotrickling filters were 3.9 and 0.9 min, respectively. Approximately 50 ppmv of H2S gas was detected in the outlet gas. The maximum elimination capacity of the biotrickling filter system was found to be 272 g H2S.m− 3.h− 1. During the biological process, the performance of biotrickling filter was not affected when the pH of the recirculated liquid decreased to 2–3. The overall performance of the biotrickling filter system was described using a modified Michaelis–Menten equation, and the Ks and Vm values for the biosystem were 34.7 ppmv and 200 mg H2S/L.h− 1, respectively.

Styrene Removal from Polluted Air in Biotrickling Filter with Pyrocarbon-Sawdust and Ceramic-Raschig-Rings-Sawdust Packings

2015 ◽  
Vol 737 ◽  
pp. 519-523
Author(s):  
Ai Ling Ren ◽  
Xi Lv ◽  
Bin Guo ◽  
Huan Huan He ◽  
Jin Zhang
Keyword(s):  
Removal Efficiency ◽  
Microbial Population ◽  
Film Formation ◽  
Biotrickling Filter ◽  
Residence Times ◽  
Liquid Ratio ◽  
Gas Concentration ◽  
Biotrickling Filters ◽  
Styrene Removal ◽  
Empty Bed Residence Time

In this paper, a mixed microbial population biotrickling filter (BTF) was investigated for styrene removal with two different packings at different empty bed residence times and gas-liquid ratio(GLR). The two biotrickling filters inoculated with a Pyrocarbon-sawdust and ceramic-raschig-rings-sawdust mixed packings were filled respectively in two identical laboratory-scale biotrickling filters which were operated in parallel. The results showed that the BTF filling with pyrocarbon-sawdust packings had higher rate of bio-film formation and removal efficiency of styrene than that of ceramic-raschig-rings-sawdust packings. When an inlet gas concentration of 50 to 450 mg/m³, an Empty Bed Residence Time (EBRT) of 21.6 to 43.2 s, and a gas-liquid ratio (GLR) of 110.7 to 55.3, a maximum styrene removal load is up to 153.1 g/(m³·h). During shock-load experiments with shutdown, the styrene removal efficiency of the BTF could gradually reach 92 % to 100 % by 14 h.

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