title: [Anaerobic biodegradation pathway of the main ingredient of traditional Chinese medicine wastewater].
abstract: A laboratory-scale experiment was done. And the baicalin anaerobic biodegradation curve and pathway were discussed by analyzing the results of GC-MS. After analogue of status's trend and analysis of its regression, the biodegradation kinetic equation of baicalin was obtained. And the possible biodegradation pathway was "desugar --> debentures --> open benzene ring --> saturating --> disconnect links". It took at least 47 h to biodegrade baicalin. The main products of anaerobic biodegradation were micro-molecule oxide, such as alcohols, aldehydes, acids, esters, olefin, and hydrocarbon of methane series. This result demonstrated that the rate-limiting steps of bacalin biodegradation were the hydrolyzing and acidification phase. It was suitable to use two-phase anaerobic process and long HRT to biodegrade baicalin.
authors.affiliation: College of Power & Energy Engineering, Harbin Engineering University, Harbin 150001, China. realshiyue@sohu.com
authors.forename: Yue
authors.initials: Y
authors.lastname: Shi
authors.forename: Nan-Qi
authors.initials: NQ
authors.lastname: Ren
authors.forename: Yu-Ming
authors.initials: YM
authors.lastname: Zhang
authors.forename: Rong-Xin
authors.initials: RX
authors.lastname: Xiao
mesh_terms: D001421:Bacteria, Anaerobic / Q000254:growth & development / Q000378:metabolism*; D001673:Biodegradation, Environmental; D019149:Bioreactors; D004365:Drugs, Chinese Herbal / Q000378:metabolism*; D005419:Flavonoids / Q000378:metabolism; D007220:Industrial Waste / Q000517:prevention & control; D014865:Waste Disposal, Fluid / Q000379:methods*
chemical_list: D004365:Drugs, Chinese Herbal; D005419:Flavonoids; D007220:Industrial Waste; C038044:baicalin