[Anaerobic biodegradation pathway of the main ingredient of traditional Chinese medicine wastewater].
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.
Shi
Yue
Y
College of Power & Energy Engineering, Harbin Engineering University, Harbin 150001, China. realshiyue@sohu.com
Ren
Nan-Qi
NQ
Zhang
Yu-Ming
YM
Xiao
Rong-Xin
RX
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*
D004365:Drugs, Chinese Herbal; D005419:Flavonoids; D007220:Industrial Waste; C038044:baicalin