Energy-efficient removal of trace antibiotics from low-conductivity water using a Ti4O7 reactive electrochemical ceramic membrane: Matrix effects and implications for byproduct formation was written by Yang, Kui;Lin, Hui;Feng, Xingwei;Jiang, Jin;Ma, Jinxing;Yang, Zhifeng. And the article was included in Water Research in 2022.Application of 70458-96-7 The following contents are mentioned in the article:
The inevitably high energy consumption of traditional electrochem. processes to treat low-conductivity water has limited their wider application. Herein, we present an energy-efficient alternative, i.e., a Ti4O7 reactive electrochem. ceramic membrane (Ti4O7-REM) system with a superior mass transfer ability. For the removal of 10-200μM norfloxacin (NOR) from low-conductivity (178-832μS cm-1) water, the Ti4O7-REM system increased the kinetics rate constant by 4.3-34.0 times, thus decreasing the energy cost by 80.5-97.3% compared with a flow-by system. The rapid NOR removal was related to the enhanced direct electron transfer process in the Ti4O7-REM system, which allowed for higher resistance to HCO-3 scavenging and a favorable reaction between NOR and the active sites. Meanwhile, this mechanism likely contributed to the less formation of inorganic chlorinated product, ClO-3, in the presence of Cl-. Although organic chlorinated byproducts were not detected during NOR degradation in the Ti4O7-REM system, Cl- influenced the speciation of the intermediates. A single-pass Ti4O7-REM system demonstrated 94-97% removal of trace antibiotics from real water samples in 30 s. The addnl. energy consumption (<0.02 kWh m-3) using a Ti4O7-REM system only contributed to 5.0-6.4% of the total in a typical tertiary wastewater treatment plant. Based on the above results, we can conclude that the convection-enhanced REM technique is viable for the purification of low-conductivity natural waters. This study involved multiple reactions and reactants, such as 1-Ethyl-6-fluoro-4-oxo-7-(piperazin-1-yl)-1,4-dihydroquinoline-3-carboxylic acid (cas: 70458-96-7Application of 70458-96-7).
1-Ethyl-6-fluoro-4-oxo-7-(piperazin-1-yl)-1,4-dihydroquinoline-3-carboxylic acid (cas: 70458-96-7) belongs to piperazine derivatives. A form in which piperazine is commonly available industrially is as the hexahydrate, C4H10N2. 6H2O, which melts at 44 °C and boils at 125–130 °C. Although many piperazine derivatives occur naturally, piperazine itself can be synthesized by reacting alcoholic ammonia with 1,2-dichloroethane, by the action of sodium and ethylene glycol on ethylene diamine hydrochloride, or by reduction of pyrazine with sodium in ethanol.Application of 70458-96-7
Referemce:
Piperazine – Wikipedia,
Piperazines – an overview | ScienceDirect Topics