A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Nutrient Limitation in a Compost Biofilter Degrading Hexane
A laboratory-scale compost-based biofilter was operated over a six-month period to study the requirements for removal of n-hexane from air. Hexane is a relatively short chain aliphatic hydrocarbon with a high Henry's coefficient and a low water solubility. Acclimation of the biofilter was slow, but removal efficiencies around 80% were achieved after one month of operation. However, performance decreased during the next two months of operation to 50% removal efficiency. Nutrient limitation was proposed as a reason for the decrease in reactor performance. After the addition of a concentrated nitrogen solution, reactor performance increased almost immediately to >99%. Removal efficiency remained above 99% for the following two months of operation at inlet concentrations of 0.7 g/m3 (200 ppmv), at superficial bed velocities approaching 50 m/h, and empty bed residence times of about one minute. Thus, nutrient availability may well limit biofilter performance even in compost- based units. It was shown that nutrients can be added effectively in a soluble form if compost quality is poor and a method is proposed for the evaluation of compost quality.
Nutrient Limitation in a Compost Biofilter Degrading Hexane
A laboratory-scale compost-based biofilter was operated over a six-month period to study the requirements for removal of n-hexane from air. Hexane is a relatively short chain aliphatic hydrocarbon with a high Henry's coefficient and a low water solubility. Acclimation of the biofilter was slow, but removal efficiencies around 80% were achieved after one month of operation. However, performance decreased during the next two months of operation to 50% removal efficiency. Nutrient limitation was proposed as a reason for the decrease in reactor performance. After the addition of a concentrated nitrogen solution, reactor performance increased almost immediately to >99%. Removal efficiency remained above 99% for the following two months of operation at inlet concentrations of 0.7 g/m3 (200 ppmv), at superficial bed velocities approaching 50 m/h, and empty bed residence times of about one minute. Thus, nutrient availability may well limit biofilter performance even in compost- based units. It was shown that nutrients can be added effectively in a soluble form if compost quality is poor and a method is proposed for the evaluation of compost quality.
Nutrient Limitation in a Compost Biofilter Degrading Hexane
Morgenroth, Eberhard (author) / Schroeder, Edward D. (author) / Chang, Daniel P.Y. (author) / Scow, Kate M. (author)
Journal of the Air & Waste Management Association ; 46 ; 300-308
1996-04-01
9 pages
Article (Journal)
Electronic Resource
Unknown
Regeneration of a Compost Biofilter Degrading High Loads of Ammonia by Addition of Gaseous Methanol
| Taylor & Francis Verlag | 2002
Removal of beta-pinene and limonene using compost biofilter
| Taylor & Francis Verlag | 2013
Changes in Physical Properties of a Compost Biofilter Treating Hydrogen Sulfide
| Taylor & Francis Verlag | 2003
Degradation of Isobutanal at High Loading Rates in a Compost Biofilter
| Taylor & Francis Verlag | 2005