Studies on cellulose acetate and sulfonated poly(ether ether ketone) blend ultrafiltration membranes

Removal of chromium from aqueous solution using cellulose acetate and sulfonated poly(ether ether ketone) blend ultrafiltration membranes

“…The polymer solution was first cast on a smooth glass plate with the help of a doctor blade. The thickness of the membrane was maintained at 0.22 ± 0.02 mm with the help of an oil sheet rolled at both the ends of the blade as followed in earlier studies [14]. The casting conditions are reported in our previous study [14].…”

“…The thickness of the membrane was maintained at 0.22 ± 0.02 mm with the help of an oil sheet rolled at both the ends of the blade as followed in earlier studies [14]. The casting conditions are reported in our previous study [14]. Prior to casting, a gelation bath of 2 l consisting of 2.5% (v/v) DMF and 0.2 wt.% SLS in distilled water (non-solvent) was prepared and the bath was ice-cooled to 18 ± 2 • C [14].…”

“…CA/SPEEK blend ultrafiltration membranes in the composition of 100/0, 90/10, 80/20, 70/30% were prepared and characterized as described earlier [14]. The membrane formulations are shown in Table 1.…”

“…The performance of CA membranes can be improved by blending it with appropriate polymers in view of the fact that polymer blends have provided an efficient way to fulfill new requirements for material property [13]. Recently, cellulose acetate-sulfonated poly (ether ether ketone) blended UF membranes have been prepared and applied to the rejection of proteins such as bovine serum albumin, egg albumin, pepsin and trypsin, achieving more than 90% rejection [14]. Heavy metals such as Cu, Ni, Zn, Co, etc., from the waste streams of several chemical, electronic, metal plating and refining industries, have been separated and concentrated through binding of the target metal ions with watersoluble macromolecular compounds and subsequent ultrafiltration of the bound metals from the unbound components [15].…”

Influence of bentonite in polymer membranes for effective treatment of car wash effluent to protect the ecosystem

“…Mysore Acetate and Chemicals Company, India Limited. Synthesis of Sulfonated poly ether ether ketone (SPEEK) was followed as per earlier procedure adopted by Arthanareeswaran et al (2004). N-methyl Pyrrolidone (NMP) and Sodium Lauryl sulfate (SLS) were purchased from M/s.…”