Wang, Chunmiao published the artcileData Analytics Determines Co-occurrence of Odorants in Raw Water and Evaluates Drinking Water Treatment Removal Strategies, COA of Formula: C7H10N2, the main research area is odorant drinking water treatment data analytic removal; co-occurrence; data mining; drinking water; odorants; removal efficiency; statistics.
A complex dataset with 140 sampling events was generated using triple quadrupole gas chromatog.-mass spectrometer to track the occurrence of 95 odorants in raw and finished water from 98 drinking water treatment plants in 31 cities across China. Data anal. identified more than 70 odorants with concentrations ranging from not detected to thousands of ng/L. In raw water, Pearson correlation anal. determined that thioethers, non-oxygen benzene-containing compounds, and pyrazines were classes of chems. that co-occurred, and geosmin and p(m)-cresol, as well as cyclohexanone and benzaldehyde, also co-occurred, indicating similar natural or industrial sources. Based on classification and regression tree anal., total dissolved organic carbon and geog. location were identified as major factors affecting the occurrence of thioethers. Indoles, phenols, and thioethers were well-removed through conventional and advanced treatment processes, while some aldehydes could be generated. For other odorants, higher removal was achieved by ozonation-biol. activated carbon (39.3%) compared to the conventional treatment process (14.5%). To our knowledge, this is the first study to systematically identify the major odorants in raw water and determine suitable treatment strategies to control their occurrence by applying data analytics and statistical methods to the complex dataset. It will provide informative reference for odor control and water quality management in drinking water industry.
Environmental Science & Technology published new progress about Coagulation. 14667-55-1 belongs to class pyrazines, name is 2,3,5-Trimethylpyrazine, and the molecular formula is C7H10N2, COA of Formula: C7H10N2.