title: [Gaseous phenol removal in a bio-trickling filter].
abstract: The performance of a bio-trickling filter (BTF) for treatment of phenol, a model pollutant, was presented. Influences of factors on phenol removal efficiency were studied. The BTF exhibited a high removal efficiency for phenol. The experimental results showed that the phenol efficiency reached 99.5% and kept 98% in the long-term run. The optimal residence time, pH value and spray density were 20.6 s, 7.0 and 1.67 m(3) x (m(2) x h)(-1), respectively. The microbial community structures in the bio-trickling filter for phenol removal were assessed by PCR-DGGE. Based on the 16S rDNA sequence data,results showed that the predominant bacteria for degradation of phenol were Polaromonas sp., Acinetobacter sp., Acidovorax sp., Veillonella parvula and Corynebacterium sp., GC-MS was used to detect component of BTF's outlet gases and pyruvic acid (CH3COCOOH) was found as one kind of intermediates of phenol degradation. Then one possible biodegradation pathway of phenol was inferred.
authors.forename: Jue-Cong
authors.initials: JC
authors.lastname: He
authors.forename: Qian-Ru
authors.initials: QR
authors.lastname: Huang
authors.forename: Zhou-Yang
authors.initials: ZY
authors.lastname: Chen
authors.forename: Qi-Hong
authors.initials: QH
authors.lastname: Ye
authors.forename: Yu-Wei
authors.initials: YW
authors.lastname: Luo
authors.forename: Zai-Shan
authors.initials: ZS
authors.lastname: Wei
mesh_terms: D001419:Bacteria / Q000145:classification / Q000378:metabolism*; D001673:Biodegradation, Environmental; D005374:Filtration / Q000379:methods*; D005740:Gases / Q000737:chemistry; D010636:Phenols / Q000737:chemistry*; D012336:RNA, Ribosomal, 16S / Q000235:genetics
chemical_list: D005740:Gases; D010636:Phenols; D012336:RNA, Ribosomal, 16S