An Investigation on the Efficiency of Air Purification Using a Biofilter with Activated Bed of Different Origin

Chemical and Process Engineering. 2014;35(4):435-445 DOI 10.2478/cpe-2014-0033

 

Journal Homepage

Journal Title: Chemical and Process Engineering

ISSN: 2300-1925 (Online)

Publisher: De Gruyter Open

Society/Institution: Committee of Chemical and Process of Polish Academy of Sciences

LCC Subject Category: Technology: Chemical technology: Chemical engineering

Country of publisher: Poland

Language of fulltext: English

Full-text formats available: PDF

 

AUTHORS

Zagorskis Alvydas (Vilnius Gediminas Technical University, Department of Environment Protection, Saulėtekio al. 11, LT-10223, Vilnius, Lithuania)
Vaiškūnaitė Rasa (Vilnius Gediminas Technical University, Department of Environment Protection, Saulėtekio al. 11, LT-10223, Vilnius, Lithuania)

EDITORIAL INFORMATION

Peer review

Editorial Board

Instructions for authors

Time From Submission to Publication: 32 weeks

 

Abstract | Full Text

Recent studies in the area of biological air treatment in filters have addressed fundamental key issues, such as a biofilter bed of different origin composed of natural zeolite granules, foam cubes and wood chips. When foam and zeolite are mixed with wood chips to remove volatile organic compounds from the air, not only biological but also adsorption air purification methods are accomplished. The use of complex purification technologies helps to improve the efficiency of a filter as well as the bed service life of the filter bed. Investigations revealed that microorganisms prevailing in biological purification, can also reproduce themselves in biofilter beds of inorganic and synthetic origin composed of natural zeolite and foam. By cultivating associations of spontaneous microorganisms in the filter bed the dependencies of the purification efficiency of filter on the origin, concentration and filtration time of injected pollutants were determined. The highest purification efficiency was obtained when air polluted with acetone vapour was supplied to the equipment at 0.1 m/s of superficial gas velocity. When cleaning air from volatile organic compounds (acetone, toluene and butanol), under the initial pollutant concentration of ~100 mg/m3, the filter efficiency reached 95 %.