The reaction rate of a catalyzed reaction is faster than the reaction rate of the uncatalyzed reaction at the same temperature. Safety of Sodium 2-(methylamino)ethanesulfonate, 4316-74-9, Name is Sodium 2-(methylamino)ethanesulfonate, SMILES is [Na+].CNCCS([O-])(=O)=O, in an article , author is Chemaly, Susan M., once mentioned of 4316-74-9.
Simultaneous removal of hexavalent chromium and o-dichlorobenzene by isolated Serratia marcescens ZD-9
Heavy metals-organics mixture pollution is increasingly concerned and simultaneous removal of organic pollutants and heavy metals is becoming significant. In this study, a strain was isolated from the sediment of a tannery effluent outfalls, which can remove o-dichlorobenzene (o-DCB) and Cr(VI) simultaneously. The bacterial isolate was identified as Serratia marcescens by the 16S rRNA gene sequences. The strain removed about 90% of o-DCB and more than 80% of Cr(VI) at the concentration of 1.29gL(-1)o-DCB and 20mgL(-1) Cr(VI). In the presence of concomitant pollutant o-DCB, the optimal pH (8.0) and temperature (30 degrees C) were determined for Cr(VI) removal. Changes of the bacterial cells and intracellular black Cr(III) sediments were observed by the TEM auxiliary analysis. The results of the FTIR spectroscopy analysis indicated that hydroxyl, amide and polysaccharides were involved in the process of Cr(VI) removal.
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