ISSN:
1573-6776
Keywords:
biofilter
;
nitrogen dioxide
;
nitrogen monoxide
;
soil
Source:
Springer Online Journal Archives 1860-2000
Topics:
Process Engineering, Biotechnology, Nutrition Technology
Notes:
Abstract Nitrogen oxide gas (NOx), consisting of nitrogen monoxide (NO) and nitrogen dioxide (NO2), at a low concentration corresponding to that on roads as a result of exhaust from automobiles, was supplied for 25 days through a laboratory-scale biofilter packed with soil as a packing material. The removal efficiency of NO2 by soil was almost 100%, and the removal efficiency of NO was 60% on average and 86% at maximum. By using γ-irradiated soil as a packing material, NO2 was completely removed mainly by adsorption onto or absorption into the packing material. However, the removal efficiency of NO in the sterilized soil was only 20%, suggesting that NO in soil was removed microbiologically under aerobic conditions.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1023/A:1005624815889
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