title: Biotreatment of waste gas containing pyridine in a biofilter.
abstract: Industrial waste gas emissions containing pyridine are generated from pyridine manufacturing industries, and in industrial operations where pyridine is used as a solvent, as an intermediate for synthesis and as a catalyst for a variety of applications. Pyridine has unpleasant fishy odor with an odor index of 2390 and waste gaseous emissions containing pyridine require proper treatment prior to discharge. A biofilter, packed with compost and wood chips and inoculated with Pseudomonas pseudoalcaligenes-KPN for enrichment of pyridine-degrading microorganisms, was operated on a continuous feed basis for a period of more than 2 years. The results indicate that the biofilter medium with optimal moisture content of 68% and an effective bed retention time (EBRT) of 28.50s could degrade pyridine effectively (>99%) at a loading of 434 g pyridine m(-3)h(-1). The treated waste gas was also found to be free from pyridine odor.
authors.affiliation: National Environmental Engineering Research Institute, Nehru Marg, Nagpur 440 020, India. rapandey@hotmail.com
authors.forename: R A
authors.initials: RA
authors.lastname: Pandey
authors.forename: K V
authors.initials: KV
authors.lastname: Padoley
authors.forename: S S
authors.initials: SS
authors.lastname: Mukherji
authors.forename: S N
authors.initials: SN
authors.lastname: Mudliar
authors.forename: A N
authors.initials: AN
authors.lastname: Vaidya
authors.forename: A S
authors.initials: AS
authors.lastname: Rajvaidya
authors.forename: T V
authors.initials: TV
authors.lastname: Subbarao
mesh_terms: D000393:Air Pollutants / Q000302:isolation & purification* / Q000378:metabolism; D001673:Biodegradation, Environmental; D005374:Filtration / Q000295:instrumentation / Q000379:methods; D005740:Gases; D007220:Industrial Waste; D009566:Nitrates / Q000032:analysis; D009573:Nitrites / Q000032:analysis; D009812:Odorants; D044205:Pseudomonas pseudoalcaligenes / Q000378:metabolism; D011725:Pyridines / Q000378:metabolism*; D012987:Soil / Q000032:analysis; D012988:Soil Microbiology; D018505:Waste Management / Q000379:methods*; D014934:Wood
chemical_list: D000393:Air Pollutants; D005740:Gases; D007220:Industrial Waste; D009566:Nitrates; D009573:Nitrites; D011725:Pyridines; D012987:Soil; C023666:pyridine