Microbubble enhanced ozonation process for advanced treatment of wastewater produced in acrylic fiber manufacturing industry was written by Zheng, Tianlong;Wang, Qunhui;Zhang, Tao;Shi, Zhining;Tian, Yanli;Shi, Shanshan;Smale, Nicholas;Wang, Juan. And the article was included in Journal of Hazardous Materials in 2015.Reference of 18891-13-9 The following contents are mentioned in the article:
This work investigated microbubble-ozonation for the treatment of a refractory wet-spun acrylic fiber wastewater in comparison to macrobubble-ozonation. CODcr, NH3-N, and UV254 of the wastewater were removed by 42%, 21%, and 42%, resp. in the microbubble-ozonation, being 25%, 9%, and 35% higher than the removal rates achieved by macrobubble-ozonation at the same ozone dose. The microbubbles (with average diameter of 45 μm) had a high concentration of 3.9 × 105 counts/mL at a gas flow rate of 0.5 L/min. The gas holdup, total ozone mass-transfer coefficient, and average ozone utilization efficiency in the microbubble-ozonation were 6.6, 2.2, and 1.5 times higher than those of the macrobubble-ozonation. Greater generation of hydroxyl radicals and a higher zeta potential of the bubbles were also observed in the microbubble ozonation process. The biodegradability of the wastewater was also significantly improved by microbubble-ozonation, which was ascribed to the enhanced degradation of alkanes, aromatic compounds, and the many other bio-refractory organic compounds in the wastewater. Microbubble-ozonation can thus be a more effective treatment process than traditional macrobubble-ozonation for refractory wastewater produced by the acrylic fiber manufacturing industry. This study involved multiple reactions and reactants, such as Ethyl methyl adipate (cas: 18891-13-9Reference of 18891-13-9).
Ethyl methyl adipate (cas: 18891-13-9) belongs to esters. Esters are widespread in nature and are widely used in industry. In nature, fats are in general triesters derived from glycerol and fatty acids. Esters are responsible for the aroma of many fruits, including apples, durians, pears, bananas, pineapples, and strawberries. Because of their lack of hydrogen-bond-donating ability, esters do not self-associate. Consequently, esters are more volatile than carboxylic acids of similar molecular weight.Reference of 18891-13-9
Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics