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Polychlorinated biphenyl is a kind of persistent organic pollutants. This experiment screened a halophilic bacterium which could grow at the salinity of 15%, and designated as B2.6. Strain B2.6 could use PCBs as sole carbon and energy source for growth. The optimal conditions of PCBs-degrading were obtained via alteration of pH, inoculation amount and the concentration. The experiment indicated at...
The degradation and its kinetics of chlorine chlorination of phenol in disinfection process was studied. The influencing factors were investigated, such as chlorine dosage, temperature and background organic compound and so on. The experimental results showed that the degradation of phenol by chlorine followed second-order kinetics. The temperature influenced the reaction sharply, and it followed...
The contamination of ground and surface water with methyl tert-butyl ether (MTBE) has evoked substantial attention due to the frequent occurrence of storage tank leakage. Kinetic analysis of MTBE degradation by polyethyleneimine stabilized beads with alginate immobilized Methylibium petroleiphilum PM1 was investigated in this paper. The results showed that the stabilized beads could be used wider...
Ammonia nitrogen is a common pollutant in water environment, and the nitrogen removal techniques have been studied extensively. In this work, a new kind of annular reactor was developed and the photocatalysis with suspended TiO2 was used for degradation of ammonia nitrogen. The effects of experimental conditions on the ammonia degradation efficiency and the photocatalytic products in the effluent...
The properties of plant root exudates and their effects on the water solubility of PCP were investigated in this paper. The results showed that the hydrophobic and the high-molecular-weight fractions of sunflower(Helianthusannuus) root exudates were more than those of lucerne(Medicagosativa) root exudates. With time elapsed, the biodegradation rate of lucerne root exudates was higher than sunflower...
The extensive clayization of Dexing copper mine is responsible for water and soil pollutions because of the oxidation of sulfide minerals. During the clayization, harmful elements such as As, S, Sb and Pb could be effectively released into the clay and water. Using the abundant spectral information of short wave infrared (SWIR), combining with the spectral absorbed index, SAM (Spectrum Angle Mapper)...
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