[2, 4, 6-Trichlorophenol Mineralization Promoted by Anaerobic Reductive Dechlorination of Acclimated Sludge and Extracellular Respiration Dechlorination Pathway].

In anaerobic conditions, the acclimation of activated sludge was studied with sodium lactate as the electron donor and 2,4,6-trichlorophenol as the electron acceptor. Metabolic characteristics of dechlorination were the focus of this study. The result showed highly efficient dechlorination on 2, 4, 6-trichlorophenol that the conversion rate reached to 100% in 9 - 24 h when initial concentrations of sodium lactate and 2,4, 6-trichlorophenol were 20 mmol x L(-1) and 40 - 80 μmol x L(-1), respectively.

[Analysis of dynamic characteristics for fermentative hydrogen-producing bacteria community and hydrogen producing capability in CSTR].

The start into the types of fermentation was carried out by pH adjustment from 4.2 to 6.0 in CSTR system.

[Competitive adsorption between bromine and bromate on activated carbon and impact on bromate formation].

Regularity of adsorption removal for bromine and bromate in water has been tested by three different activated carbon. It is demonstrated that in single adsorbent solution adsorption removal rates for bromine and bromate is 69% and 88%, respectively. As for double adsorbent solution, the removal rate of bromine decreased to 10% and of bromate is higher than 60%.

[Effects of terminal products on hydrogen production by ethanol hydrogen-producing microflora].

The effects of terminal products on hydrogen production were conducted in continuously stirred tank reactor (CSTR) by the acclimated ethanol hydrogen-producing bacteria. Glucose was added as carbon source and different ambient pH was carried out by buffer solution. High ethanol production was simultaneously achieved with high hydrogen production.

[Community of activated sludge based on different targeted sequence of 16S rDNA by denaturing gradient gel electrophoresis].

In order to realize effect of different sets of universal primers on the analysis of microbial community of activated sludge based on targeted sequence of 16S rDNA and employ effectively denaturing gradient gel electrophoresis (DGGE), activated sludge were obtained from the continuous stirred tank reactor (CSTR), 16S rDNA fragments were amplified with there primer sets (341f/534r, 968f/1401r and 341f/926r), and the diversity and dynamics of microbial communities were investigated by DGGE. The results indicated that community diversity and dynamics was obviously different based different sets of universal primers by DGGE. Separated patterns of the targeted sequence of primer 341f/534r and 968f/1401r were better than of 341f/926r.