Selective separation of cadmium(II), copper(II) and nickel(II) ions from electroplating wastewater using dual flat sheet supported liquid membrane was written by Lee, Lai Yee;Morad, Norhashimah;Ismail, Norli;Rafatullah, Mohd. And the article was included in Desalination and Water Treatment in 2021.Formula: C25H54ClN The following contents are mentioned in the article:
A dual flat sheet supported liquid membrane (DFSSLM) system was developed based on concurrent extraction, selective separation, and recovery of three metal ions from a mixture in a single process. DFSSLM was made up of a combination of two membranes and three compartments (feed, intermediate and strip) to selectively recover not just one but three types of metal ions at the end of the system. This research aims to study the efficiency of DFSSLM in the selective extraction of cadmium(II) and copper(II) over nickel(II) ions from an aqueous mixture and electroplating waste-water. The first membrane was impregnated with 100 mM di-(2-ethylhexyl)phosphoric acid and 50 mM tri-Bu phosphate in kerosene, whereas the second membrane was impregnated with 99.64 mM trioctylmethylammonium chloride and 50 mM tri-Bu phosphate in toluene. After continuous stirring (500 rpm) in all compartments for 48 h, 98.79% of nickel(II) was recovered from the synthetic mixture in feed, 91.32% of copper(II) in intermediate, and 91.04% of cadmium(II) in strip compartment. The flux changes and kinetic studies showed cadmium(II) was preferentially transported over copper(II). The membranes (polymer and extractants) were characterized by Fourier transform IR spectroscopy and SEM with an energy-dispersive X-ray. In comparison with the treatment of real electroplating effluent, high output/input ratios were obtained for recovered cadmium(II), copper(II) and nickel(II). Most of the other heavy metals were eliminated together with the recovery of 89.09% of cadmium(II) in the strip, 90.87% of copper(II) in intermediate, and 97.61% of nickel(II) in the feed. This study concluded that DFSSLM is efficient for the separation and recovery of cadmium(II), copper(II) and nickel(II) from a complex mixture This study involved multiple reactions and reactants, such as N-Methyl-N,N-dioctyloctan-1-aminium chloride (cas: 5137-55-3Formula: C25H54ClN).
N-Methyl-N,N-dioctyloctan-1-aminium chloride (cas: 5137-55-3) belongs to organic chlorides. Organic chlorides can cause corrosion in pipelines, valves and condensers, and cause catalyst poisoning. The hydrocarbon processing industry (HPI) and others are affected by damage caused by these substances. Alkanes and aryl alkanes may be chlorinated under free radical conditions, with UV light. However, the extent of chlorination is difficult to control.Formula: C25H54ClN
Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics