Biodegradation of tetramethylammonium chloride wastewater and inorganic nitrogen removal by a mixed culture was written by Liu, Yu-Cheng;Hu, Yu-Chen;Chu, I.-Ming;Wei, Yu-Hong;Tsai, Shen-Long. And the article was included in Journal of Environmental Chemical Engineering in 2022.Safety of Tetramethylammonium chloride The following contents are mentioned in the article:
The disposal of wastewater containing tetramethylammonium chloride (TMAC) generated from the semiconductor and photoelec. industries is a challenging problem due to the limited information is available regarding its treatability. This study aims to investigate the feasibility of using biol. processes to treat TMAC. An activated sludge collected from a lake near the Southern Taiwan Science Park was used. Various operational parameters, including operating temperature, pH conditions and TMAC dosages were evaluated for the optimal condition. Results showed that the activated sludge could successfully degrade TMAC, and subsequently achieve simultaneous nitrification and denitrification (SND) of the nitrogen-containing intermediates under mild conditions (pH at a range of 3-7 and temperature at a range of 20-40°C). Besides, more than 60% of the nitrogen-containing intermediates were converted into gaseous nitrogen (N2). TMAC biodegradation was found to follow first-order kinetics. The observed rate constant of TMAC biodegradation increased from 0.64 10-4 to 9.57 10-4 1/min as the concentration of TMAC decreased. In addition, TMAC demethylation was identified as the rate-limiting step of the entire reaction. Major functional organisms of the activated sludge were identified as Mycobacterium, Ochrobactrum and Arthrobacter species which are aerobic and acidophilic strains. This study can be an important reference for future researches attempting to treatment TMAC wastewater by biol. processes. This study involved multiple reactions and reactants, such as Tetramethylammonium chloride (cas: 75-57-0Safety of Tetramethylammonium chloride).
Tetramethylammonium chloride (cas: 75-57-0) belongs to organic chlorides. Chlorination modifies the physical properties of hydrocarbons in several ways. These compounds are typically denser than water due to the higher atomic weight of chlorine versus hydrogen. Alkanes and aryl alkanes may be chlorinated under free radical conditions, with UV light. However, the extent of chlorination is difficult to control.Safety of Tetramethylammonium chloride
Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics