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Assessment of Waste-Derived Biochars on the Health and Biological Activity of Soil

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Effect of Periods of Non-Use on Biofilter Performance.

F Jason Martin¹, Raymond C Loehr²

¹a Rust Environment and Infrastructure , Shehoygan , Wisconsin , USA.

Journal of the Air & Waste Management Association (1995)

|January 10, 2017

Summary

Biofilter performance is impacted by non-use periods. Longer non-use, especially stagnant conditions, increases microorganism reacclimation time when chemical loading resumes.

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Area of Science:

Environmental Engineering
Environmental Microbiology

Background:

Biofilters remove chemicals from gases via sorption and biodegradation.
Periods of non-use can necessitate microorganism reacclimation to chemical loads.

Purpose of the Study:

To investigate the effect of different non-use scenarios (no chemical loading, stagnant) on biofilter performance.
To compare acclimation times for initial loading versus reacclimation after non-use.
To examine the influence of humidification during non-use periods.

Main Methods:

Bench-scale biofilter testing.
Exposure to three different chemicals.
Comparison of acclimation and reacclimation periods under various non-use conditions.

Main Results:

Acclimation times varied from hours to over a day.
Extended non-use periods led to longer reacclimation times.
Stagnant non-use periods resulted in longer reacclimation than periods with no chemical loading.

Conclusions:

Biofilter performance is significantly affected by the duration and type of non-use.
Reacclimation is necessary after non-use, with stagnant periods posing a greater challenge.
Understanding these effects is crucial for optimizing biofilter operation and maintenance.