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.

scholarly journals Evaluation of Parallel-Series Configurations of Two-Phase Partitioning Biotrickling Filtration and Biotrickling Filtration for Treating Styrene Gas-Phase Emissions

2020 ◽  
Vol 12 (17) ◽  
pp. 6740 ◽  
Author(s):  
Pau San-Valero ◽  
Javier Álvarez-Hornos ◽  
Pablo Ferrero ◽  
Josep M. Penya-Roja ◽  
Paula Marzal ◽  
...  
Keyword(s):  
High Throughput Sequencing ◽  
Silicone Oil ◽  
Sharp Decrease ◽  
Complete Removal ◽  
Industrial Applications ◽  
Biotrickling Filter ◽  
Gaseous Emissions ◽  
Two Phase ◽  
Phase Partitioning ◽  
In Series

The removal of styrene from industrial representative gaseous emissions was studied using two reactors connected in series: a two-phase partitioning biotrickling filter (TPPB-BTF) and a conventional biotrickling filter (BTF). The system was operated under industrial conditions, which included steady and transient conditions and intermittent spraying. Silicone oil was used in the TPPB-BTF with a quantity as low as 25 mL L−1, promoting a faster start-up compared to the BTF. By working at a styrene loading of 30 g m−3 h−1, nearly complete removal efficiency (RE) was obtained. In addition, the removal was not adversely impacted by using non-steady emission patterns such as overnight shutdowns (97% RE) and oscillating concentrations (95% RE), demonstrating its viability for industrial applications. After 2 months from inoculation, two additional configurations (reverse series BTF + TPPB-BTF and parallel) were tested, showing the series configuration as the best approach to consistently achieve RE > 95%. After 51 days of operation, high throughput sequencing revealed a sharp decrease in the bacterial diversity. In both reactors, the microorganisms belonging to the Comamonadaceae family were predominant and other styrene degraders such as Pseudomonadaceae proliferated preferably in the first reactor.

Hydrogen sulfide removal from biogas in biotrickling filter system inoculated with Paracoccus pantotrophus

2019 ◽  
Vol 44 (56) ◽  
pp. 29554-29560
Author(s):  
Jinjuta Juntranapaporn ◽  
Nunthaphan Vikromvarasiri ◽  
Cheema Soralump ◽  
Nipon Pisutpaisal
Keyword(s):  
Hydrogen Sulfide ◽  
Biotrickling Filter ◽  
Filter System ◽  
Sulfide Removal ◽  
Hydrogen Sulfide Removal ◽  
Paracoccus Pantotrophus

Using a Biotrickling Filter System to Remove Hydrogen Sulfide from Digester Gas

2010 ◽  
Vol 2010 (3) ◽  
pp. 94-102
Author(s):  
Daniel Gary ◽  
Andy Lee ◽  
Robert Morton ◽  
Chi-Chung Tang ◽  
Philip Friess
Keyword(s):  
Hydrogen Sulfide ◽  
Biotrickling Filter ◽  
Filter System

Production of fines from refined kraft pulp by fractionation with micro-perforated screens

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Elisabeth Björk ◽  
Hannes Vomhoff ◽  
Per Engstrand
Keyword(s):  
Kraft Pulp ◽  
Fibre Length ◽  
Fine Fraction ◽  
Pilot Scale ◽  
Hole Size ◽  
High Concentration ◽  
Feed Concentration ◽  
Screening Process ◽  
Perforated Screen ◽  
In Series

Abstract The objective in this work was to obtain a fine fraction of kraft pulp, with as high concentration as possible, in a pilot-scale fractionation with micro-perforated screen baskets. The influence of screen basket surface, hole size, feed concentration, pulp type and refining segment design was investigated. The results showed that a smooth screen basket surface improved the fractionation efficiency of the unrefined pulp compared to a profiled screen basket, despite a larger hole size. A significantly higher fine fraction concentration was obtained when using refined hardwood pulp compared to when using softwood pulp, which was explained with its lower average fibre length and narrower and thus more flexible fibre fragments. The pilot trials also showed that the screening process could be operated at feed concentrations similar to those directly after a refiner, 30–40 g/l. This was demonstrated in a process layout with partial recirculation where a refiner and a micro-perforated screen basket were operated in series in pilot scale.

Pilot-scale biotrickling filter for hydrogen sulfide removal from biogas under continuous discharge flow

2014 ◽  
Vol 31 ◽  
pp. S118-S119 ◽  
Author(s):  
Martín Ramírez ◽  
Fernando Almenglo ◽  
José Manuel Gómez ◽  
Domingo Cantero
Keyword(s):  
Hydrogen Sulfide ◽  
Pilot Scale ◽  
Biotrickling Filter ◽  
Discharge Flow ◽  
Sulfide Removal ◽  
Hydrogen Sulfide Removal ◽  
Continuous Discharge

A Pilot-Scale Rotating Drum Biotrickling Filter for Removing Gaseous Styrene

2005 ◽  
Vol 277-279 ◽  
pp. 517-522 ◽  
Author(s):  
Ji Sung Lim ◽  
Jae Woong Hwang ◽  
Cha Yong Choi ◽  
Bong Hwan Kim ◽  
Sung Hoon Park
Keyword(s):  
Polyurethane Foam ◽  
Pilot Scale ◽  
Biotrickling Filter ◽  
Rotating Drum ◽  
Biofilm Growth ◽  
Start Up ◽  
Purification System ◽  
New Type ◽  
Maximum Elimination Capacity ◽  
Liquid Mass Transfer

A new type of biofilter, the rotating drum biotrickling filter (RDBF) system, was developed and operated to remove styrene from waste gas stream. Porous polyurethane foam sheets were used as a packing material for the RDBF and a pure culture of the Gram-positive bacterium Brevibacillus sp. SP1 was as an inoculum. The reactor showed a short start-up period of 18 days. Once uniform biofilms were developed on the packing, a high and stable removal of styrene over 95 % was observed at an incoming concentration of 200 ppmv and a retention time of 0.5 min. The maximum elimination capacity was estimated to be 125 g/m3/hr. The outstanding performance was attributed to an efficient gas-liquid mass transfer and proper supply of nutrient solution to the packing during the rotation of the drum. However, this performance of the RDBF was not maintained longer than 7 days because of the clogging of the open pores in the polyurethane foam due to an excessive growth of the biofilms. This result indicates that the RDBF has great potential as a gas purification system if a proper method to control the biofilm growth is developed.

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