Last edited by Faera
Friday, July 17, 2020 | History

2 edition of Investigation of airflow through a compost-based biofilter. found in the catalog.

Investigation of airflow through a compost-based biofilter.

Susan Theresa MacFarlane

Investigation of airflow through a compost-based biofilter.

by Susan Theresa MacFarlane

  • 368 Want to read
  • 25 Currently reading

Published .
Written in English


The Physical Object
Pagination199 leaves.
Number of Pages199
ID Numbers
Open LibraryOL20643033M
ISBN 100612412229

Liang et al. [13] reported a shortest EBRT of 32 s for removal of ammonia in a compost-based biofilter with activated carbon as an added material, which is consistent with the present study. Demeestere et al. [26] achieved a minimum EBRT of 21 s, corresponding to g NH 3 /m 3 h, in a biofilter with compost as the packing material (Table 1). Biofiltration of air polluted with xylene vapors was carried out for nearly two years in a large laboratory-scale installation with a volume of the bed of expanded clay equal to 32 dm3. During the experiment, different xylene inlet concentrations were applied, within the range from to over mg/m3 at a linear gas flow rate of , , and m/s, as well as and

(b) Quantity of water exiting the biofilter through time after the tower stoppage, calculated using airborne water mass balance between the bottom and the top of the biofilter. Table 1. (a) Air temperature and relative humidity at the different localizations in the pilot unit, airborne water concentration calculated using Mollier diagram and the composting greenhouse at new alchemy institute: a report on two years of operation and monitoring

Commercial compost facilities are located in every province and territory in Canada. As of , there were approximately composting facilities across the country.() Complaints from citizens about odours from a composting facility are not stated in an industry-based newsletter,() “The thorn in the side of the industry does continue to be odour.” Geotechnical Characterization of Compost Based Biocover Materials Geotechnical Characterization of Compost Based Biocover Materials Khoshand, Afshin; Fall, Mamadou Landfills are one of the major sources of methane (CH4) emission which is a very potent greenhouse gas. The use of a natural process for microbial CH4 oxidation through


Share this book
You might also like
The first fifty

The first fifty

The Journal of the Birmingham Historical Society

The Journal of the Birmingham Historical Society

Apocalypse revealed

Apocalypse revealed

A ticket to the boneyard

A ticket to the boneyard

Mischief and fun for dull days.

Mischief and fun for dull days.

Dancing round the world

Dancing round the world

When cows come home

When cows come home

Follow through live

Follow through live

Design Council and the Scottish Committee of the Council

Design Council and the Scottish Committee of the Council

Some aspects of the aeroacoustics of high-speed jets

Some aspects of the aeroacoustics of high-speed jets

Investigation of airflow through a compost-based biofilter by Susan Theresa MacFarlane Download PDF EPUB FB2

Based on earlier observation from grain bulks (Kumar and Muir, ;Jayas et al., ;Kay et al., ), a smaller horizontal airflow pressure drop per unit flow rate per unit thickness through A horizontal-airflow biofilter was constructed to evaluate the airflow characteristics through a horizontal biofilter bed.

Based on data collected over two summers of operation, it can be   The biofilter bed depth for a given airflow depends on the airflow resistance characteristics of the biofilter media.

Airflow resistance characteristics for this media (Fig. 4) were determined at the University of Minnesota using an apparatus developed by Nicolai (). The biofilter bed depth was determined based on the airflow rate required   The biofilter was fed by a measured primary airflow, provided by a continuous compressed air source, the delivered air flowing through a water column in order to become fully saturated.

A secondary fraction of the main airflow was directed to a ‘bubbler’ unit containing the liquid toluene reagent (Fischer Scientific, % pure).

Overall performance of compost-based biofilter in the removal of styrene. Steady-state conditions were observed after day 35 of the operation. As shown in Fig. 3 a, the majority of the removal occurred in the first two sections of the biofilter with section 3 contributing   Wright et al.

() reported that pressure drop of a compost biofilter was less than 10 mm H 2 O over a m bed height after days of operation. Pressure drop across a compost-based biofilter was also reported to be less than 50 mm H 2 O over a m bed height (Deshusses, b).

Biofiltration of VOCs showed high removal efficiencies in   @article{osti_, title = {Biofiltration of benzene contaminated air streams using compost-activated carbon filter media}, author = {Zhu, L and Kocher, W M and Abumaizar, R J}, abstractNote = {Three laboratory-scale biofilter columns were operated for 81 days to investigate the removal of benzene from a waste gas stream.

The columns contain a mixture of yard waste and sludge compost As the airflow rate through the biofilter increases, the force needed to push the air through the media increases.

This force is measured as the static pressure difference from the inlet side of the biofilter to the atmosphere. For a biofilter, the relationship between airflow rate and static pressure depends on the type of media and media   resistance to airflow through grain bulks in the horizontal direction than in the vertical direction.

With the assistance of a couple of summer students, two biofilter chambers were constructed on a trailer (Fig.

One chamber allowed vertical airflow through the media while the other allowed horizontal airflow through the media. Experiments were   compost pile is based on the equipment used to turn the windrow effectively. Usually, windrows are no higher than 7 ft and no wider than 16 ft.

Over-sized compost windrows will inhibit airflow resulting in anaerobic conditions and unwanted odours. Compost piles that require less water should be a triangular shape to shed water,   Liang et al. reported a shortest EBRT of 32 s for removal of ammonia in a compost-based biofilter with activated carbon as an added material, which is consistent with the present study.

Demeestere et al. achieved a minimum EBRT of 21 s, corresponding to g NH 3 /m 3 h, in a biofilter with compost as the packing material. Back-pressure Biofilter media mixtures were compared in 18 pilot-scale biofilters treating pit gases from a swine facility.

The compost and wood chips mixtures ranged from % wood chips to a A ventilator (3) in the polluted air supply duct creates an airflow through the biofilter.

The polluted air supply duct has a valve (2), which regulates the airflow velocity and, at the same time, the flow rate of the supplied air. Then, the polluted airflow enters a biofilter cartridge (16) The U.S. Department of Energy's Office of Scientific and Technical   @article{osti_, title = {Treatment of Produced Waters Using a Surfactant Modified Zeolite/Vapor Phase Bioreactor System}, author = {Katz, Lynn E and Kinney, Kerry A and Bowman, R S and Sullivan, E J}, abstractNote = {This report summarizes work performed on this project from April through September Our previous work demonstrated that a polyurethane foam biofilter   Janni, ).

If the pressure drop through the biofilter can be kept less than 40 pa ( in H20) it may not be necessary to replace existing fans in a livestock building when installing a biofilter (Phillips et al., ). Thus, pressure drop becomes a very important factor in the design of a :// The compost biofilter used in this study to test gas-phase toluene and xylene removal was a previously operated biofilter that was already acclimatized to The simplest form of biofiltration consists of compost-based systems.

This report summarizes work performed on this project from April through September To simplify the start up and operating requirements of the biofilter system, a simple, compost-based biofilter was investigated for its ability to treat the BTEX contaminants This study evaluates the use of a mixture of compost, sludge and pieces of hard plastics as a biofilter medium to remove ammonia from a waste gas stream through a bench-scale biofilter   An alternative approach to maintaining indoor air quality may be the biofiltration of air circulated within the space.

A biofilter with living botanical matter as the packing medium reduced concentrations of toluene, ethylbenzene, and o-xylene concurrently present at parts per billion (volume) in indoor air.

The greatest reduction in concentrations per pass was under the. Table 1. Laboratory‐based biofilter research (NA = not available). Reference Media Media area*height (cm2*cm) Biofilter type Media moisture content (%) Inlet concentration of pollutants EBRT (s) Temperature of the biofilter RE (%) Pressure drop Operation time Remarks Sun et al., Mixture of yard waste compost with wood chips *20 Ergas SJ, Schroeder ED, Chang DPY, Morton RL () Control of volatile organic compound emissions using a compost based biofilter.

Water Environ Res – Google Scholar Fouhy K () Cleaning waste gas ://  This work compares the performance of a bench-scale compost biofilter for H 2 S elimination under two regimes of operation: (a) conventional and (b) with bed mixing. In the conventional operation, the polluted gas passes through a static packed media (without mixing), with water addition at the top of the biofilter for moisture ://