scholarly journals INFLUENCE OF KEY PARAMETERS ON THE REMOVAL EFFICIENCY OF AIR POLLUTANTS BY A BIOTRICKLING FILTER

2019 ◽  
Author(s):  
VINCENZO TORRETTA ◽  
MARCO SCHIAVON ◽  
PAOLO CARUSON ◽  
MARCO RAGAZZI
Keyword(s):  
Removal Efficiency ◽  
Air Pollutants ◽  
Biotrickling Filter

scholarly journals Investigating the species of microorganisms from activated sludge for handling phenol contaminated-air streams in biotrickling filter

2013 ◽  
Vol 16 (3) ◽  
pp. 96-105
Author(s):  
Anh Thi Kim Nguyen ◽  
Mi Thi Tra Le ◽  
Phu Ly Sy Nguyen ◽  
Nga Diep Yen Dang ◽  
Hien Thi To
Keyword(s):  
Bacillus Thuringiensis ◽  
Activated Sludge ◽  
Removal Efficiency ◽  
High Efficiency ◽  
Bacillus Pumilus ◽  
Air Flow ◽  
Biotrickling Filter ◽  
Inlet Concentration ◽  
Air Streams ◽  
Removal Equipment

This research aimed at investigating the species of microorganisms from activated sludge is capable of handling gas-containing phenol vapor by means of trickling biofilter. By isolating and culturing microorganisms, two species, Bacillus pumilus and Bacillus thuringiensis, was discovered to dominate in phenol vapor removal equipment with high efficiency (about 90% with B. pumilus strain and 92% with B. thuringiensis strains) at inlet concentration about 650 - 850 mg/Nm3 and air flow of 1.5 L/min. Simultaneously, similar experiments were carried out with mixed microorganisms obtained removal efficiency of more than 80%. This result showed that microorganisms after being isolated gave higher performance than mixture of microorganisms. In particular, strain of B. thuringiensis could handle up to 3600 mg/Nm3 in inlet concentration at about 184.3 gphenolm-3.h-1 elimination capacity when removal efficiency was over 92%.

Development of Photocatalyst Plasma Air Cleaning Filter Used in Air Conditioner

2003 ◽  
Vol 6 (1) ◽  
Author(s):  
Sung Hwa Lee
Keyword(s):  
Removal Efficiency ◽  
Indoor Air ◽  
Air Pollutants ◽  
High Efficiency ◽  
Discharge Plasma ◽  
Air Conditioner ◽  
Pulsed Discharge ◽  
Air Cleaning ◽  
Cleaning System ◽  
Pulsed Discharge Plasma

AbstractThe purpose of this work is to develop a high efficiency air cleaning system for air pollutants such as particles, odor and suspended microbes in indoor air. In order to enhance a removal efficiency of odor pollutants, we suggested that pulsed discharge plasma be combined with TiO

Treatment of air polluted with methanol vapours in biofilters with and without percolationThis article is one of a selection of papers published in this Special Issue on Biological Air Treatment.

2009 ◽  
Vol 36 (12) ◽  
pp. 1911-1918 ◽  
Author(s):  
Antonio Avalos Ramirez ◽  
Sandrine Bénard ◽  
Anne Giroir-Fendler ◽  
J. Peter Jones ◽  
Michèle Heitz
Keyword(s):  
Carbon Dioxide ◽  
Production Rate ◽  
Removal Efficiency ◽  
Nitrogen Concentration ◽  
Carbon Dioxide Production ◽  
Elimination Capacity ◽  
Biotrickling Filter ◽  
Filter Performance ◽  
Carbon Dioxide Production Rate ◽  
Maximum Elimination Capacity

Air polluted with methanol vapours was treated in a biofilter and a biotrickling filter, both packed with inert materials. The effects of the nitrogen concentration present in the nutrient solution, the empty bed residence time, and the methanol inlet load, on the biofilter and biotrickling filter performance were all examined and compared. The elimination capacity, the biomass and the carbon dioxide production rates all increased with the increase of the parameters tested. The maximum elimination capacity for the biotrickling filter was 240 g·m–3·h–1 with corresponding removal efficiency of 75% and carbon dioxide production rate of 10 g·m–3·h–1, whereas the maximum elimination capacity for the biofilter was 80 g·m–3·h–1 with corresponding removal efficiency of 35% and carbon dioxide production rate of 70 g·m–3·h–1. The biomass production rate was similar for both the biofilter and the biotrickling filter. The carbon dioxide production rate was higher by a factor of 2 to 9 for the biofilter compared to the biotrickling filter.

scholarly journals Odour and ammonia removal from pig house exhaust air using a biotrickling filter

2004 ◽  
Vol 50 (4) ◽  
pp. 275-282 ◽  
Author(s):  
R.W. Melse ◽  
G. Mol
Keyword(s):  
Removal Efficiency ◽  
Ammonia Removal ◽  
Water Soluble ◽  
Biotrickling Filter ◽  
Removal Capacity ◽  
Odour Concentration ◽  
The Many ◽  
Odour Removal ◽  
Increasing Load ◽  
Ammonia Abatement

Odour from agricultural activities, such as the spreading of manure and the housing of animals, is increasingly being considered a nuisance in densely populated countries like the Netherlands. The objective of this research was to study the odour removal from pig house exhaust air by a biotrickling filter that had been implemented for ammonia abatement. At a regular pig production farm, the performance of a running full-scale biotrickling filter was studied for 72 days. Ammonia and odour removal efficiency were on average 79% and 49% respectively. Ammonia removal appeared to be based on an unintended accumulation of ammonium and nitrite in the system, instead of on production and discharge of nitrate. The odour removal efficiency showed a large variation that, for a major part, about 80%, could be attributed to actual changes in the performance of the biotrickling filter. These changes were probably caused by variations in the composition of the air that were not completely reflected by the olfactometrically measured odour concentration, as the many different components that make up the odour each have different removal characteristics. It seemed that the biotrickling filter was operated below its maximum absolute odour removal capacity [OUE/(m3 filter)/s], which means that the absolute odour removal will probably rise at increasing load. It was, however, not possible to distinguish between the influence of either the odour load or the odour concentration on the odour removal, because of a positive correlation between the odour concentration and the air flow. To increase the odour removal efficiency (%), the design of the filter probably needs to be optimised for both well and poorly water-soluble odour components.

Effect of aeration modes on the characteristics of composting emissions and the NH3 removal efficiency by using biotrickling filter

2011 ◽  
Vol 31 (8) ◽  
pp. 1702-1710 ◽  
Author(s):  
Chuanfu Wu ◽  
Qunhui Wang ◽  
Xiaohong Sun ◽  
Niantao Xue ◽  
Shu Liu ◽  
...  
Keyword(s):  
Removal Efficiency ◽  
Biotrickling Filter

scholarly journals Removal of Acetone Vapor from Air Using a Biotrickling Filter Packed with Polymeric Bioballs

Processes ◽  
2021 ◽  
Vol 10 (1) ◽  
pp. 57
Author(s):  
Alvydas Zagorskis ◽  
Tomas Januševičius ◽  
Vaidotas Danila
Keyword(s):  
Pseudomonas Putida ◽  
Human Health ◽  
Removal Efficiency ◽  
Gas Flow ◽  
Packing Material ◽  
Biotrickling Filter ◽  
Acetone Vapor ◽  
Filtration Time ◽  
Flow Rates ◽  
Air Biofiltration

Acetone released into the atmosphere can adversely affect human health and the environment. The aim of this work was to evaluate the performance of a laboratory-scale biotrickling filter (BTF) with bioball packing material to remove acetone vapor from contaminated air. The acetone removal efficiency was investigated in two different scenarios: with and without the inoculation of microorganisms. Three strains of bacteria, Pseudomonas putida, Rhodococcus aerolatus, and Aquaspirillum annulus, were used in the BTF. In both cases, the filter units were simultaneously operated for 100 days under three different inlet acetone concentrations (0.18 ± 0.01 g/m3, 0.25 ± 0.01 g/m3, and 0.40 ± 0.02 g/m3) and two different gas flow rates (2.54 and 5.09 m3/h). The results showed that acetone removal was greater in the filter with the inoculated bacteria. In the filter operated without inoculum, the acetone removal efficiency gradually decreased with filtration time from 90.1% to 6.1%. While employing three types of bacteria in the BTF, the efficiency of acetone removal remained relatively stable and varied between 70.2% and 97.6%. The study also revealed that bioballs can be successfully used as a packing material in air biofiltration systems designed for acetone removal from the air.

scholarly journals Odorous Compound Removal Performance and Water Properties of a Biotrickling Filter Installed in a Piggery

2021 ◽  
Vol 37 (4) ◽  
pp. 563-572
Author(s):  
Tomoko Yasuda ◽  
Miyoko Waki ◽  
Yasuyuki Fukumoto ◽  
Hiroaki Saito ◽  
Hiroki Yokojima
Keyword(s):  
Removal Efficiency ◽  
Volatile Fatty Acids ◽  
Dimethyl Sulfide ◽  
Dimethyl Disulfide ◽  
Biotrickling Filter ◽  
Water Tank ◽  
Pentanoic Acid ◽  
Butanoic Acid ◽  
Odorous Compounds ◽  
Empty Bed Residence Time

Highlights We evaluated the performance of a two-stage biotrickling filter in a pig facility. A short empty bed residence time lowered the secondary filter removal efficiency for many odorous compounds. The removal efficiency of some compounds increased when the pH in the secondary water tank decreased. Low-odor-threshold compounds such as MT, n-BA, n-PA, and p-cresol were indicated as targets for optimization. Abstract . Odor is a major problem in pig production, and it is important to minimize odor emissions. To determine the factors influencing variations in odor removal efficiency, we analyzed the performance of a biotrickling filter installed in growing-finishing pig rooms on a commercial farm. Over 16 months, we conducted measurements of representative odorous compounds, namely sulfur compounds (hydrogen sulfide, methanethiol, dimethyl sulfide, and dimethyl disulfide), volatile fatty acids (propanoic acid, 2-methylpropanoic acid, butanoic acid, 3-methylbutanoic acid, and pentanoic acid), and ammonia. The average removal efficiencies of methanethiol, dimethyl disulfide, volatile fatty acids, and ammonia were 83% to 89%, with 50% for hydrogen sulfide and 18% for dimethyl sulfide. For many, but not all, odorous compounds, removal efficiency declined significantly with decreasing empty bed residence time (EBRT). From an analysis of the correlations of odorous compounds’ removal efficiency with the properties of the trickling water, we hypothesized that water properties such as pH, free ammonia, free nitrous acid, ionic species (Na+, Ca2+) concentrations, temperature, electrical conductivity, and biological oxygen demand, in addition to EBRT, were associated with fluctuations in removal efficiency during full-scale operation. The pH in the secondary water tank was negatively correlated with the removal efficiencies of methanethiol, dimethyl sulfide, butanoic acid, 3-methylbutanoic acid, pentanoic acid, and ammonia. Our identification of key odorous compounds indicates the importance of the secondary filter in odor treatment. Biotrickling filters for air in pig facilities could be further optimized by targeting low-odor-threshold compounds such as methanethiol, butanoic acid, pentanoic acid, and p-cresol, in addition to ammonia. Keywords: Ammonia, Biotrickling filter, Pig facility odor, Sulfur compound, Trickling water, Volatile fatty acid.

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