scholarly journals Evaluation of a Wet Acid Scrubber and Dry Filter Abatement Technologies in Pig Barns by Dynamic Olfactometry

2021 ◽  
Vol 11 (7) ◽  
pp. 3219
Author(s):  
Cecilia Conti ◽  
Emanuela Tullo ◽  
Jacopo Bacenetti ◽  
Marcella Guarino
Keyword(s):  
Removal Efficiency ◽  
Farm Workers ◽  
European Standard ◽  
Odor Concentration ◽  
Air Cleaning ◽  
Odor Emission ◽  
Odor Removal ◽  
Pig Farm ◽  
Neighboring Population ◽  
Dynamic Olfactometry

Livestock activities, in particular swine farms, are sources of odorant compounds that cause conflicts with the neighboring population. Beside the effects on the neighborhood, excessive odor emission can cause discomfort to farm workers. In this context the APPROAch project, aims to test the application of two different air cleaning technologies (a wet acid scrubber and a dry filter) to reduce dust, ammonia and odors, in naturally ventilated pig facilities. The aim of the present study is to evaluate, in a pig farm, the odor removal efficiency of the two tested abatement technologies, based on air samples analyzed by dynamic olfactometry. Odor sampling was carried out at a pig facility involved in the project and brought to the lab within 30 h from sampling, as established by the European Standard EN 13725:2004. Odor concentration was evaluated by dynamic olfactometry using an Olfaktomat-n 6 (PRA-Odournet B.V.—Amsterdam, The Netherlands). The results show that the wet acid scrubber prototype presents an average odor removal efficiency of 16%, whereas dry filter has from limited to no effect. This efficiency could be considered as a good result for a prototype even if further analysis, with longer sampling periods are needed.

Masking agent efficiency on odor removal from WWTP sludge drying process

2018 ◽  
Author(s):  
F. Rousseille ◽  
A. Ventura
Keyword(s):  
Control Unit ◽  
Drying Process ◽  
Odor Control ◽  
Odor Concentration ◽  
Odor Removal ◽  
Masking Agents ◽  
Last Stage ◽  
Foul Odor ◽  
Sludge Drying ◽  
Dynamic Olfactometry

Abstract A study was executed in 2016 to determine the efficiency of two different neutralizers on odor perception from a sludge drying process. One of the products was injected by fogging system at the inlet of the odor control unit while the other was added directly to the washing solution of the last stage of the odor control unit, according to supplier recommendations. Performance evaluations encompassed complementary approaches including both sensorial analyses and analytical measures. Odor analyses were performed via dynamic olfactometry according to European Standard EN 13725 coupled with hedonic tone approach according to VDI 3882. Additional analyses on VOC emissions were conducted using gas chromatography screening. In parallel, several odor panels composed of site operators and plant neighbors carried out observations on the WWTP and its perimeter. The main conclusions of this study illustrates: • Only one test leads to a reduction of the odor concentration at the stack, • Overall, neither of the two masking agents significantly reduce the odor concentration at the stack, • The addition of masking agent seems to increase foul odor persistency, • The local odor panel observed no significant improvement in odor reduction within the environment around the WWTP.

scholarly journals Antimicrobial resistance pattern of extended-spectrum β-lactamase-producing Escherichia coli isolated from fecal samples of piglets and pig farm workers of selected organized farms of India

2020 ◽  
Vol 13 (2) ◽  
pp. 360-363
Author(s):  
Shikha Tamta ◽  
Obli Rajendran Vinodh Kumar ◽  
Shiv Varan Singh ◽  
Bommenahalli Siddaramiah Pruthvishree ◽  
Ravichandran Karthikeyan ◽  
...  
Keyword(s):  
Escherichia Coli ◽  
Antimicrobial Resistance ◽  
Susceptibility Testing ◽  
Farm Workers ◽  
Resistance Pattern ◽  
Antibiotic Susceptibility Testing ◽  
M Gene ◽  
Fecal Samples ◽  
E Coli ◽  
Pig Farm

Background and Aim: Extended-spectrum β-lactamase (ESBL)-producing Escherichia coli are gradually increasing worldwide and carry a serious public threat. This study aimed to determine the antimicrobial resistance pattern of ESBL-producing E. coli isolated from fecal samples of piglets and pig farm workers. Materials and Methods: Fecal samples from <3-month-old piglets (n=156) and farm workers (n=21) were processed for the isolation of ESBL-producing E. coli in MacConkey agar added with 1 μg/mL of cefotaxime. E. coli (piglets=124; farm workers=21) were tested for ESBL production by combined disk method and ESBL E-strip test. Each of the ESBL-positive isolate was subjected to antibiotic susceptibility testing. The ESBL-producing E. coli were further processed for genotypic confirmation to CTX-M gene. Results: A total of 55 (44.4%, 55/124) and nine (42.9%, 9/21) ESBL-producing E. coli were isolated from piglets and farm workers, respectively. Antibiotic susceptibility testing of the ESBL-positive E. coli isolates from piglets and farm workers showed 100% resistance to ceftazidime, cefotaxime, cefotaxime/clavulanic acid, ceftazidime/clavulanic acid, and cefpodoxime. A proportion of 100% (55/55) and 88.9% (8/9) ESBL-positive E. coli were multidrug resistance (MDR) in piglets and farm workers, respectively. On genotypic screening of the ESBL E. coli isolated from piglets (n=55), 15 were positive for the blaCTX-M gene and of the nine ESBL E. coli from farm workers, none were positive for the blaCTX-M gene. Conclusion: Although there was no significant difference in isolation of ESBL-producing E. coli between piglets and farm workers, the ESBL-positive E. coli from piglets showed relatively higher MDR than farm workers.

Interlaboratory comparison of dynamic olfactometry in Central Europe 2000

2001 ◽  
Vol 44 (9) ◽  
pp. 27-32 ◽  
Author(s):  
D. Mannebeck ◽  
H. Mannebeck
Keyword(s):  
Central Europe ◽  
Hydrogen Sulphide ◽  
Interlaboratory Comparison ◽  
European Standard ◽  
Mean Values ◽  
Repeatability And Reproducibility ◽  
Odour Concentration ◽  
Standard Deviations ◽  
Dynamic Olfactometry

This paper presents the results of an interlaboratory comparison (ringtest) on olfactometry with 31 participants from four countries in Central Europe. The aim was to give evidence of the performance of dynamic olfactometry on the basis of the European Standard prEN 13725 (Draft) “Determination of odour concentration with dynamic olfactometry”. The test included the analysis of three individual substances (n-butanol, hydrogen sulphide, tetrahydrothiophen) as well as a natural odour mixture (coffee flavour) to compare mean values and the standard deviations of results for the investigated samples. It was confirmed that laboratories working in compliance with the requirements of the new standard achieve a significantly better repeatability and reproducibility than those that are not compliant.

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

Difference in the odor concentrations measured by the triangle odor bag method and dynamic olfactometry

2009 ◽  
Vol 59 (7) ◽  
pp. 1339-1342 ◽  
Author(s):  
H. Ueno ◽  
S. Amano ◽  
B. Merecka ◽  
J. Kośmider
Keyword(s):  
Selection Criterion ◽  
Control Law ◽  
Odor Control ◽  
Odor Concentration ◽  
Threshold Data ◽  
Selection Test ◽  
The Difference ◽  
The Individual ◽  
Individual Threshold ◽  
Dynamic Olfactometry

‘The triangle odor bag method’, which has been adopted for the offensive odor control law in Japan, and the dynamic olfactometry defined by EN 13725 have been compared. The odor concentration measured by the triangle odor bag method tends to be higher than that of the dynamic olfactometry in the forced choice mode, while well agreed in the Yes/No mode olfactometry when the panel is the same. The difference can be minimized by applying the panel selection criterion of EN13725 to the triangle odor bag method. The European panel selection test is useful to negate the difference in the measurement equipments although the criteria seem to be strict considering the individual threshold data of n-butanol.

Hepatitis E Virus in Domestic Pigs, Wild Boars, Pig Farm Workers, and Hunters in Estonia

2015 ◽  
Vol 7 (4) ◽  
pp. 403-412 ◽  
Author(s):  
Anna Ivanova ◽  
Valentina Tefanova ◽  
Irina Reshetnjak ◽  
Tatiana Kuznetsova ◽  
Julia Geller ◽  
...  
Keyword(s):  
Hepatitis E Virus ◽  
Hepatitis E ◽  
Farm Workers ◽  
Wild Boars ◽  
Domestic Pigs ◽  
Pig Farm

Efficiency Evaluation of Gas Treatment Equipments in Terms of Odor Removal Using Dynamic Olfactometry

2009 ◽  
Vol 4 (2) ◽  
Author(s):  
M. E. Quadros ◽  
P. Belli Filho ◽  
H. M. Lisboa
Keyword(s):  
Wide Spectrum ◽  
State Regulation ◽  
Operating Conditions ◽  
Emission Rates ◽  
Treatment Efficiency ◽  
Gas Treatment ◽  
Normal Operating ◽  
Odor Emission ◽  
Odor Removal ◽  
Biological Filters

Brazilian environmental regulations are following the international trend to include odor emission control. Today, the only state legislation that determines odor emission limits in Brazil defines that odor generating activities, emitting more that 5×106 O.U/h (odor units per hour), must install odor treatment equipments with at least 85% efficiency for odor removal. This work had the objective to apply dynamic-dilution olfactometry to assess the treatment efficiency of 12 full-scale industrial gas scrubbers and 2 biological filters for the removal of odor during their normal operating conditions, located in five industries in southern Brazil. To determine the odor concentration, a 6-person dynamic-dilution olfactometer was used. Odor emission rates were also measured. Results showed the wide spectrum of efficiency levels that can be found in normal operating conditions for different gas treatment techniques. Overall surprisingly low efficiency rates were found in most wet scrubbers. Biological filters showed relatively higher efficiency rates, but no equipment reached the 85% treatment efficiency level established by law in the case of high odor emissions. As for the odor emission rates, six equipments had an odor outflow higher than the values established by the state regulation.

scholarly journals Properties of the filtrate from treatment of pig manure by filtration method

2017 ◽  
Vol 15 (1) ◽  
pp. 19-27 ◽  
Author(s):  
Agnieszka Makara ◽  
Zygmunt Kowalski ◽  
Agnieszka Saeid
Keyword(s):  
Treatment Process ◽  
Organic Fertilizer ◽  
Raw Material ◽  
Pig Manure ◽  
Mineralization Process ◽  
Filtration Method ◽  
Odor Concentration ◽  
Odor Emission ◽  
Specific Odor

AbstractThis paper presents properties of filtrate obtained from pig manure using the AMAK treatment process, which includes the mineralization of macro- and microfertilizer components by the hydrolyzing of organic matter into forms that are bioavailable to plants. Filtration produced two products, sediment and filtrate. The quality of the filtrate allowed for its use as a substitute of water to irrigate crops. Concentrations of heavy metals are very low and therefore the quality of the filtrate fully complies with European standard concerning fertilizers. The used mineralization process practically eliminated odors from the filtrate. The reduction of specific odor emission by 99.1-99.5% in samples taken from above the filtrate, respectively compared to the odor concentration found in samples taken from above raw pig manure. Sediment could be used as raw material for production of mineral-organic fertilizer. Filtrate and filtration sediments analyses show that the majority of nitrogen and other fertilizing compounds included in raw pig manure remains in sediment.

scholarly journals Odor Emissions Factors for Bitumen-Related Production Sites

2021 ◽  
Vol 11 (8) ◽  
pp. 3700
Author(s):  
Enrico Davoli ◽  
Giancarlo Bianchi ◽  
Anna Bonura ◽  
Marzio Invernizzi ◽  
Selena Sironi
Keyword(s):  
Emission Rate ◽  
Mean Value ◽  
Emission Data ◽  
Odor Concentration ◽  
Surrounding Environment ◽  
Starting Point ◽  
Odor Emission ◽  
Odor Emissions ◽  
The Mean ◽  
Definition Of

Bitumen-related production sites are facing increasing difficulties with nearby residents due to odor emissions. This parameter is still not regulated for these plants and little is known about the emissions that these plants have put into the atmosphere with the technologies available today. In this study, emission data from 47 Italian production plants were collected and analyzed to assess which values could describe the current situation in Italy. The results of the analysis showed that emissions are very variable, with odor concentration values between 200 to 37,000 ouE/m3, but data have a normal distribution. The mean value of the stack odor concentration was found to be 2424 ouE/m3. It was also possible to calculate emission factors of the plants, such as odor emission rate (OER), which represents the quantity of odor emitted per unit of time, and is expressed in odor units per second (ouE∙s−1) and odor emission factor (OEF) per ton of product, expressed in ouE/t. The values obtained were 7.1 × 104 ouE/s and 1.4 × 106 ouE/t. respectively. These data could provide a starting point for the definition of shared values among various stakeholders for the definition of regional guidelines for the emissions of these plants, in order to adjust available technologies towards emission parameters that are protective of the surrounding environment.

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