Removal of beta-pinene and limonene using compost biofilter

Area of Science:

• Environmental Science
• Chemical Engineering
• Waste Management

Background:

• Composting of organic waste releases toxic volatile organic compounds (VOCs), primarily terpenes.
• These emissions pose a threat to human health and the environment.

Purpose of the Study:

• To evaluate the efficiency of biofiltration in controlling terpene emissions from composting.
• To investigate the impact of operational parameters on biofilter performance.

Main Methods:

• A laboratory-scale biofilter was used to treat terpene emissions from composting.
• Performance was assessed based on inlet flow rate, concentration, and bed length/diameter ratio (L/D).

Main Results:

• High removal efficiencies (>90%) for limonene and beta-pinene were achieved at low flow rates.
• Increased L/D ratio and decreased inlet concentration enhanced removal efficiency.
• Significant removal rates were observed even at high loading rates.

Conclusions:

• Compost beds can function as effective biofilters for terpene odor control during composting.
• Understanding operational parameters is crucial for designing efficient compost biofilters.