Most of the compounds have physiologically active properties, and their biological properties are often attributed to the heteroatoms contained in their molecules, and most of these heteroatoms also appear in cyclic structures. A Journal, Desalination called Optimised coagulation using aluminium sulfate for the removal of dissolved organic carbon, Author is Chow, Christopher W. K.; van Leeuwen, John A.; Fabris, Rolando; Drikas, Mary, which mentions a compound: 616-43-3, SMILESS is CC1=CNC=C1, Molecular C5H7N, Application of 616-43-3.
Coagulation experiments at pH values ranging from 3 to 7 were conducted on raw water samples from four Australian reservoirs-Hope Valley, Myponga, Moorabool and Mt Zero-to assess the removal of natural organic matter (NOM) with alum. The aim was to characterize the NOM in these water sources that is highly recalcitrant to removal by alum coagulation. The selection of these water sources covered a range in raw water quality varying in inorganic and organic composition and character. NOM in both raw and treated waters was characterized by several techniques including specific UV absorbance (SUVA), high performance size exclusion chromatog. (HPSEC) and pyrolysis-gas chromatog. mass spectrometry (Py-GC-MS). The results can provide better understanding of the removal limitations of each treatment step and the knowledge will allow design engineers to select a suitable combined treatment process for optimum NOM removal. Despite the fact that the organic character of the four source waters were different, results showed that after optimized alum coagulation all four waters had a similar character. The mol. weight distribution anal. (HPSEC) indicated alum coagulation preferentially removed the higher mol. weight UV absorbing compounds while those remaining in the treated waters had the properties of lower apparent mol. weights (about 500-700 Daltons) and less UV absorbance. Py-GC-MS analyses of NOM in these waters before and after treatment indicated that polysaccharides and their derivatives are recalcitrant to removal with alum coagulation. Generally, the findings indicate that the character of the NOM is an important factor in determining its treatability.
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Synthesis and Crystal Structure of a Chiral C3-Symmetric Oxygen Tripodal Ligand and Its Applications to Asymmetric Catalysis,
Chiral lanthanide(III) complexes of sulphur–nitrogen–oxygen ligand derived from aminothiourea and sodium D-camphor-β-sulfonate