摘要:
Mixtures containing methanol and dimethyl carbonate or methanol and methyl t-butyl ether may be treated by pervaporation to recover product containing decreased quantity of methanol.
摘要:
A furfural-containing middle distillate stream is supported by use of a polyethylene-imine membrane which has been crosslinked with a polyisocyanate or a poly (carbonyl chloride) cross-linking agent.
摘要:
Immiscible hydrocarbon liquid can be separated from an aqueous charge by initially allowing the charge to settle, and then skimming off a lighter layer of hydrocarbon from a heavier aqueous layer, followed by nanofiltration of the aqueous layer, employing a membrane that passes an aqueous filtrate having a reduced content of hydrocarbon, and leaves an aqueous retentate containing hydrocarbon liquid.
摘要:
Mixtures containing methanol and dimethyl carbonate or methanol and methyl t-butyl ether may be treated by pervaporation to recover product containing decreased quantity of methanol.
摘要:
Concentration of aqueous solutions of ethylene glycol may be effected by a composite membrane including a glutaraldehyde - crosslined polyvinyl alcohol bonded to a porous layer of polysulfone on a polyester backing.