Control of VOC emissions from a flexographic printing facility using an industrial biotrickling filter

2012 ◽  
Vol 65 (1) ◽  
pp. 177-182 ◽  
Author(s):  
F. Sempere ◽  
V. Martínez-Soria ◽  
J. M. Penya-roja ◽  
A. Waalkens ◽  
C. Gabaldón
Keyword(s):  
Water Flow Rate ◽  
Biotrickling Filter ◽  
Inlet Temperature ◽  
Term Operation ◽  
Volatile Organic ◽  
Industrial Unit ◽  
Flexographic Printing ◽  
Emission Limits ◽  
Empty Bed Residence Time

The study of an industrial unit of biotrickling filter for the treatment of the exhaust gases of a flexographic facility was investigated over a 2-year period with the objective to meet the volatile organic compound (VOC) regulatory emission limits. Increasing the water flow rate from 2 to 40 m3 h−1 improved the performance of the process, meeting the VOC regulation when 40 m3 h−1 were used. An empty bed residence time (EBRT) of 36 s was used when the inlet air temperature was 18.7 °C, and an EBRT as low as 26 s was set when the inlet temperature was 26.8 °C. During this long-term operation, the pressure drop over the column of the bioreactor was completely controlled avoiding clogging problems and the system could perfectly handle the non-working periods without VOC emission, demonstrating its robustness and feasibility to treat the emission of the flexographic sector.

scholarly journals Low-dosage Ozonation in Gas-phase Biofilter Promotes Community Diversity and Robustness.

2020 ◽  
Author(s):  
Marvin Yeung ◽  
Prakit Saingam ◽  
Yang Xu ◽  
Jinying Xi
Keyword(s):  
Carbon Sources ◽  
Community Diversity ◽  
High Concentration ◽  
Term Operation ◽  
Path Distance ◽  
Volatile Organic ◽  
Consistent Performance ◽  
Highly Correlated ◽  
Low Dosage

Abstract BackgroundThe ozonation of biofilters is known to alleviate clogging and pressure drop issues while maintaining removal performances in biofiltration systems treating gaseous volatile organic compounds (VOCs). The effects of ozone on the biofilter microbiome in terms of biodiversity, community structure, metabolic abilities, and dominant taxa correlated with performance remain largely unknown.MethodsThis study investigated two biofilters treating high-concentration toluene operating in parallel, with one acting as control and the other exposed to low-dosage (200 mg/m3) ozonation. The microbial community diversity, metabolic rates of different carbon sources, functional predictions, and microbial co-occurrence networks of both communities were examined.ResultsConsistently higher biodiversity of over 30% was observed in the microbiome after ozonation, with increased overall metabolic abilities for amino acids and carboxylic acids. The relative abundance of species with reported stress-tolerant and biofilm-forming abilities significantly increased, with a consortium of changes in predicted biological pathways, including shifts in degradation pathways of intermediate compounds, while the correlation of top ASVs and genus with performance indicators showed diversifications in microbiota responsible for toluene degradation. A co-occurrence network of the community showed a decrease in average path distance and average betweenness with ozonation.ConclusionMajor degrading species highly correlated with performance shifted after ozonation. Increases in microbial biodiversity, coupled with improvements in metabolizing performances of multiple carbon sources including organic acids could explain the consistent performance commonly seen in the ozonation of biofilters despite the decrease in biomass, while avoiding acid buildup in long term operation. The increased presence of stress-tolerant microbes in the microbiome coupled with the decentralization of the co-occurrence network suggested that ozonation could not only ameliorate clogging issues but also provide a microbiome more robust to loading shock seen in full-scale biofilters.

Development of the Hybrid Gas Turbine: 1st Year Summary — Research and Development on Practical Industrial Cogeneration Technology in Japan

2001 ◽  
Author(s):  
Ryozo Tanaka ◽  
Testuo Tastumi ◽  
Yoshihiro Ichikawa ◽  
Koji Sanbonsugi
Keyword(s):  
Research And Development ◽  
Gas Turbine ◽  
Gas Turbines ◽  
Industrial Applications ◽  
Medium Size ◽  
Test Plant ◽  
Inlet Temperature ◽  
Term Operation ◽  
Generation Technology

Based on the successful results of the Japanese national project for 300 kW ceramic gas turbine(CGT302) development (this project was finished in March 1999), the Ministry of International Trade and Industry (MITI) started “Research and Development on Practical Industrial Co-generation Technology” project in August 1999. The objective of this project is to encourage prompt industrial applications of co-generation technology that employs hybrid gas turbines (HGT; using both metal and ceramic parts in its high-temperature section) by confirming its soundness and reliability. The development activities are performed through material evaluation tests and long-term operation tests for the HGT of the medium size (8,000-kW class). It is expected that the development can realize low pollution and reducing the emission of CO2 with highly efficient use of energy. The HGT will be developed by applying ceramic components to an existing commercial 7,000-kW class gas turbine. The development targets are thermal efficiency of 34% or higher, output of 8,000-kW class, inlet temperature of 1250deg-C, and 4,000hrs of operation period for confirmation of reliability. The HGT for long-term evaluation tests and the test plant are under development. This paper gives the summary of last year’s developments in the HGT project.

Summary of CGT302 Ceramic Gas Turbine Research and Development Program

2000 ◽  
Author(s):  
Isashi Takehara ◽  
Tetsuo Tatsumi ◽  
Yoshihiro Ichikawa
Keyword(s):  
Research And Development ◽  
Gas Turbine ◽  
Thermal Efficiency ◽  
High Efficiency ◽  
Development Program ◽  
Pollutant Emissions ◽  
Inlet Temperature ◽  
Term Operation ◽  
Ceramic Components

The Japanese Ceramic Gas Turbine (CGT) research and development program (FY1988–1998) as a part of the New Sunshine Project funded by the Ministry of International Trade and Industry (MITI) was completed in March 1999. Kawasaki Heavy Industries, Ltd. (KM) participated in this research program from the beginning and developed a twin-shaft CGT with a recuperator, designated as the “CGT302”. The purposes of this program were: 1) to achieve both a high efficiency and low pollutant emissions level using ceramic components, 2) to prove a multi-fuel capability to be used in co-generation systems, and 3) to demonstrate long-term operation. The targets of this program were: i) to achieve a thermal efficiency of over 42% at a turbine inlet temperature (TIT) of 1350°C, ii) to keep its emissions within the regulated value by the law, and iii) to demonstrate continuous operation for more than a thousand hours at 1200°C TIT. The CGT302 has successfully attained its targets. In March 1999 the CGT302 recorded 42.1% thermal efficiency, and 31.7 ppm NOx emissions (O2 = 16%) at 1350°C TIT. At this time it had also accumulated over two thousand hours operation at 1200°C. In this paper, we summarize the development of the CGT302.

Biomethanation in a thermophilic biotrickling filter — pH control and lessons from long-term operation

2020 ◽  
Vol 11 ◽  
pp. 100525
Author(s):  
Muhammad Tahir Ashraf ◽  
Mads Ujarak Sieborg ◽  
Lars Yde ◽  
Chaeyoung Rhee ◽  
Seung Gu Shin ◽  
...  
Keyword(s):  
Ph Control ◽  
Biotrickling Filter ◽  
Term Operation

Long-term operation of a thermophilic biotrickling filter for removal of dimethyl sulfide

2008 ◽  
Vol 142 (3) ◽  
pp. 248-255 ◽  
Author(s):  
Munkhtsetseg Luvsanjamba ◽  
Bram Sercu ◽  
Julie Van Peteghem ◽  
Herman Van Langenhove
Keyword(s):  
Dimethyl Sulfide ◽  
Biotrickling Filter ◽  
Term Operation

Summary of CGT302 Ceramic Gas Turbine Research and Development Program

2002 ◽  
Vol 124 (3) ◽  
pp. 627-635 ◽  
Author(s):  
I. Takehara ◽  
T. Tatsumi ◽  
Y. Ichikawa
Keyword(s):  
Research And Development ◽  
Gas Turbine ◽  
Thermal Efficiency ◽  
High Efficiency ◽  
Development Program ◽  
Pollutant Emissions ◽  
Inlet Temperature ◽  
Term Operation ◽  
Ceramic Components

The Japanese ceramic gas turbine (CGT) research and development program (FY1988-1998) as a part of the New Sunshine Project funded by the Ministry of International Trade and Industry (MITI) was completed in March 1999. Kawasaki Heavy Industries, Ltd. (KHI) participated in this research program from the beginning and developed a twin-shaft CGT with a recuperator, designated as the “CGT302.” The purposes of this program were (1) to achieve both a high efficiency and low pollutant emissions level using ceramic components, (2) to prove a multifuel capability to be used in cogeneration systems, and (3) to demonstrate long-term operation. The targets of this program were (i) to achieve a thermal efficiency of over 42 percent at a turbine inlet temperature (TIT) of 1350°C, (ii) to keep its emissions within the regulated value by the law, and (iii) to demonstrate continuous operation for more than a thousand hours at 1200°C TIT. The CGT302 has successfully attained its targets. In March 1999 the CGT302 recorded 42.1 percent thermal efficiency, and 31.7 ppm NOx emissions (O2=16 percent) at 1350°C TIT. At this time it had also accumulated over 2000 hours operation at 1200°C. In this paper, we summarize the development of the CGT302.

scholarly journals Low-dosage Ozonation in Gas-phase Biofilter Promotes Community Diversity and Robustness.

2020 ◽  
Author(s):  
Marvin Yeung ◽  
Prakit Saingam ◽  
Yang Xu ◽  
Jinying Xi
Keyword(s):  
Carbon Sources ◽  
Community Diversity ◽  
High Concentration ◽  
Term Operation ◽  
Path Distance ◽  
Volatile Organic ◽  
Consistent Performance ◽  
Highly Correlated ◽  
Low Dosage

Abstract Background: The ozonation of biofilters is known to alleviate clogging and pressure drop issues while maintaining removal performances in biofiltration systems treating gaseous volatile organic compounds (VOCs). The effects of ozone on the biofilter microbiome in terms of biodiversity, community structure, metabolic abilities, and dominant taxa correlated with performance remain largely unknown. Methods: This study investigated two biofilters treating high-concentration toluene operating in parallel, with one acting as control and the other exposed to low-dosage (200 mg/m3) ozonation. The microbial community diversity, metabolic rates of different carbon sources, functional predictions, and microbial co-occurrence networks of both communities were examined. Results: Consistently higher biodiversity of over 30% was observed in the microbiome after ozonation, with increased overall metabolic abilities for amino acids and carboxylic acids. The relative abundance of species with reported stress-tolerant and biofilm-forming abilities significantly increased, with a consortium of changes in predicted biological pathways, including shifts in degradation pathways of intermediate compounds, while the correlation of top ASVs and genus with performance indicators showed diversifications in microbiota responsible for toluene degradation. A co-occurrence network of the community showed a decrease in average path distance and average betweenness with ozonation. Conclusion: Major degrading species highly correlated with performance shifted after ozonation. An increase in microbial biodiversity coupled with improvements in metabolizing performances of multiple carbon sources including organic acids could explain the consistent performance commonly seen in the ozonation of biofilters despite the decrease in biomass, while avoiding acid buildup in long term operation. The increased presence of stress-tolerant microbes in the microbiome coupled with the decentralization of the co-occurrence network suggested that ozonation could not only ameliorate clogging issues but also provide a microbiome more robust to loading shock seen in full-scale biofilters.

scholarly journals Low-dosage ozonation in gas-phase biofilter promotes community diversity and robustness

Microbiome ◽  
2021 ◽  
Vol 9 (1) ◽  
Author(s):  
Marvin Yeung ◽  
Prakit Saingam ◽  
Yang Xu ◽  
Jinying Xi
Keyword(s):  
Carbon Sources ◽  
Community Diversity ◽  
High Concentration ◽  
Term Operation ◽  
Path Distance ◽  
Volatile Organic ◽  
Consistent Performance ◽  
Highly Correlated ◽  
Low Dosage

Abstract Background The ozonation of biofilters is known to alleviate clogging and pressure drop issues while maintaining removal performances in biofiltration systems treating gaseous volatile organic compounds (VOCs). The effects of ozone on the biofilter microbiome in terms of biodiversity, community structure, metabolic abilities, and dominant taxa correlated with performance remain largely unknown. Methods This study investigated two biofilters treating high-concentration toluene operating in parallel, with one acting as control and the other exposed to low-dosage (200 mg/m3) ozonation. The microbial community diversity, metabolic rates of different carbon sources, functional predictions, and microbial co-occurrence networks of both communities were examined. Results Consistently higher biodiversity of over 30% was observed in the microbiome after ozonation, with increased overall metabolic abilities for amino acids and carboxylic acids. The relative abundance of species with reported stress-tolerant and biofilm-forming abilities significantly increased, with a consortium of changes in predicted biological pathways, including shifts in degradation pathways of intermediate compounds, while the correlation of top ASVs and genus with performance indicators showed diversifications in microbiota responsible for toluene degradation. A co-occurrence network of the community showed a decrease in average path distance and average betweenness with ozonation. Conclusion Major degrading species highly correlated with performance shifted after ozonation. Increases in microbial biodiversity, coupled with improvements in metabolizing performances of multiple carbon sources including organic acids could explain the consistent performance commonly seen in the ozonation of biofilters despite the decrease in biomass, while avoiding acid buildup in long-term operation. The increased presence of stress-tolerant microbes in the microbiome coupled with the decentralization of the co-occurrence network suggest that ozonation could not only ameliorate clogging issues but also provide a microbiome more robust to loading shock seen in full-scale biofilters.

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