Formaldehyde removal from air by a biodegradation system.
A biodegradation system was used for the treatment of formaldehyde-polluted air. Air pressure dropped 12 mm water in the trickling biofilter during the experiment of about 4 months. In the range 20-300 mg m(-3) influent formaldehyde, this biodegradation system obtained 4.0-40.0 mg h(-1) degradation capacity, with 100%-66.7% degradation efficiency. The amount of formaldehyde degraded by the trickling biofilter was more than that by the activated sludge bioreactor below 200 mg m(-3) influent gaseous formaldehyde while the amount by the trickling biofilter was less than that by the activated sludge bioreactor over 200 mg m(-3) influent gaseous formaldehyde.
Xu
Zhongjun
Z
Department of Environmental Science and Engineering, Beijing University of Chemical Technology, 100029 Beijing, China. zhongjunxu@163.com
Hou
Haiping
H
D000388:Air / Q000032:analysis* / Q000592:standards; D000393:Air Pollutants / Q000737:chemistry / Q000302:isolation & purification* / Q000378:metabolism*; D001673:Biodegradation, Environmental; D019149:Bioreactors; D005374:Filtration / Q000295:instrumentation*; D005557:Formaldehyde / Q000302:isolation & purification* / Q000378:metabolism*; D005740:Gases / Q000378:metabolism; D012722:Sewage / Q000032:analysis / Q000737:chemistry; D013997:Time Factors; D014835:Volatilization
D000393:Air Pollutants; D005740:Gases; D012722:Sewage; D005557:Formaldehyde