A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Biofiltration of a Mixture of Volatile Organic Emissions
Air biofiltration is now under active consideration for the removal of the volatile organic compounds (VOCs) from polluted airstreams. To optimize this emerging environmental technology and to understand compound removal mechanisms, a biofilter packed with peat was developed to treat a complex mixture of VOCs: oxygenated, aromatic, and chlorinated compounds. The removal efficiency of this process was high. The maximum elimination capacity (ECmax) obtained was ~120 g VOCs/m3 peat/hr. Referring to each of the mixture's components, the ECmax showed the limits in terms of biodegradability of VOCs, especially for the halogenated compounds and xylene.
A stratification of biodegradation was observed in the reactor. The oxygenated compounds were metabolized before the aromatic and halogenated ones. Two assumptions are suggested. There was a competition between bacterial communities. Different communities colonized the peat-based biofilter, one specialized for the elimination of oxygenated compounds, the others more specialized for elimination of aromatic and halogenated compounds. There was also substrate competition. Bacterial communities were the same over the height of the column, but the more easily biodegradable compounds were used first for the microorganism metabolism when they were present in the gaseous effluent.
Biofiltration of a Mixture of Volatile Organic Emissions
Air biofiltration is now under active consideration for the removal of the volatile organic compounds (VOCs) from polluted airstreams. To optimize this emerging environmental technology and to understand compound removal mechanisms, a biofilter packed with peat was developed to treat a complex mixture of VOCs: oxygenated, aromatic, and chlorinated compounds. The removal efficiency of this process was high. The maximum elimination capacity (ECmax) obtained was ~120 g VOCs/m3 peat/hr. Referring to each of the mixture's components, the ECmax showed the limits in terms of biodegradability of VOCs, especially for the halogenated compounds and xylene.
A stratification of biodegradation was observed in the reactor. The oxygenated compounds were metabolized before the aromatic and halogenated ones. Two assumptions are suggested. There was a competition between bacterial communities. Different communities colonized the peat-based biofilter, one specialized for the elimination of oxygenated compounds, the others more specialized for elimination of aromatic and halogenated compounds. There was also substrate competition. Bacterial communities were the same over the height of the column, but the more easily biodegradable compounds were used first for the microorganism metabolism when they were present in the gaseous effluent.
Biofiltration of a Mixture of Volatile Organic Emissions
Aizpuru, Aitor (author) / Malhautier, Luc (author) / Roux, Jean-Claude (author) / Fanlo, Jean-Louis (author)
Journal of the Air & Waste Management Association ; 51 ; 1662-1670
2001-12-01
9 pages
Article (Journal)
Electronic Resource
Unknown
Biofiltration of a Mixture of Volatile Organic Emissions
| British Library Conference Proceedings | 2001
Biofiltration Control of Volatile Hydrocarbon Emissions: n-Butane
| British Library Conference Proceedings | 1994
Biofiltration Control of Volatile Hydrocarbon Emissions: n-Butane
| British Library Conference Proceedings | 1994
Control of Gasoline-Derived Volatile Organic Compounds by Biofiltration
| British Library Conference Proceedings | 1994
Control of Gasoline-Derived Volatile Organic Compounds by Biofiltration
| British Library Conference Proceedings | 1994