Lee, Minju published the artcileAbatement of Polychoro-1,3-butadienes in Aqueous Solution by Ozone, UV Photolysis, and Advanced Oxidation Processes (O3/H2O2 and UV/H2O2), Recommanded Product: Diatrizoic Acid, the main research area is polychorobutadiene water hydrogen peroxide ozone UV photolysis.
The abatement of 9 polychloro-1,3-butadienes (CBDs) in aqueous solution by ozone, UV-C(254 nm) photolysis, and the corresponding advanced oxidation processes (AOPs) (i.e., O3/H2O2 and UV/H2O2) was investigated. The following parameters were determined for 9 CBDs: Second-order rate constants for the reactions of CBDs with ozone (kO3) (< 0.1 - 7.9Ã103 M-1s-1) or with hydroxyl radicals (kâ¢OH) (0.9Ã109 - 6.5Ã109 M-1s-1), photon fluence-based rate constants (k') (210 - 2730 m2 einstein-1), and quantum yields (Φ) (0.03 - 0.95 mol einstein-1). During ozonation of CBDs in a natural groundwater, appreciable abatements ( > 50% at specific ozone doses of 0.5 gO3/gDOC to â?00% at â?1.0 gO3/gDOC) were achieved for tetra-CBDs followed by (Z)-1,1,2,3,4-penta-CBD and hexa-CBD. This is consistent with the magnitude of the determined kO3 and kâ¢OH. The formation of bromate, a potentially carcinogenic ozonation byproduct, could be significantly reduced by addition of H2O2. For a typical UV disinfection dose (400 J/m2), various extents of phototransformations (10-90%) could be achieved. However, the efficient formation of photoisomers from CBDs with E/Z configuration must be taken into account because of their potential residual toxicity. Under UV-C(254 nm) photolysis conditions, no significant effect of H2O2 addition on CBDs abatement was observed due to an efficient direct phototransformation of CBDs.
Environmental Science & Technology published new progress about Conformers. 117-96-4 belongs to class isoquinoline, name is Diatrizoic Acid, and the molecular formula is C11H9I3N2O4, Recommanded Product: Diatrizoic Acid.
Referemce:
Isoquinoline – Wikipedia,
Isoquinoline | C9H7N – PubChem