Determining stability of organic solvent nanofiltration membranes by cross-flow aging
نویسندگان
چکیده
Organic solvent nanofiltration (OSN) membranes suffer from performance loss over an extended timescale due to aging. Short-term aging tests often conducted in membrane studies may not be representative of the actual behavior OSN when used organic solvents. There is a need test way that more relevant industrial applications. In this work, we series two different modes determine four commercial (Duramem 200, Puramem 280, GMT-oNF2, and SolSep BV010206) polar non-polar solvents (i.e., methanol, acetonitrile, toluene). Firstly, 30-day static experiment investigate stability soaked selected Secondly, proposed three-week cross-flow protocol with staged temperature raise long-term real-world scenarios. The operating was controlled between 25 °C 40 test. results showed acetonitrile had most significant effect on membranes, permeances were dependent solubility parameters polymer operation. polyimide-based exhibited noticeable sign increasing temperature, which could compaction densification. Our suggested new can facilitate rapid screening for use.
منابع مشابه
Nanopapers for organic solvent nanofiltration.
Would it not be nice to have an organic solvent nanofiltration membrane made from renewable resources that can be manufactured as simply as producing paper? Here the production of nanofiltration membranes made from nanocellulose by applying a papermaking process is demonstrated. Manufacture of the nanopapers was enabled by inducing flocculation of nanofibrils upon addition of trivalent ions.
متن کاملPolydicyclopentadiene : a novel organic solvent nanofiltration membrane
Approved: ____________________________________ Thesis Supervisor ____________________________________ Title and Department ____________________________________ Date
متن کاملOrganic solvent nanofiltration for microfluidic purification of poly(amidoamine) dendrimers.
A nanofiltration method has been developed in a microfluidic format for the continuous-flow pressure-driven purification of half-generation poly(amidoamine) (PAMAM) dendrimers, a family of macromolecules characterized by highly branching structures radiating from a central core, without additional solvents or buffers. An organic solvent resistant nanofiltration membrane, STARMEM 122, has been f...
متن کاملRemoval of assimilable organic carbon and biodegradable dissolved organic carbon by reverse osmosis and nanofiltration membranes
The main objective of this study was to evaluate the effectiveness of reverse osmosis (RO) and nanofiltration (NF), under various solution chemistries, on bacterial regrowth potential as quantified by assimilable organic carbon (AOC) and biodegradable dissolved organic carbon (BDOC). The bench-scale experiments, using tap groundwater spiked with acetate as organic carbon, revealed that AOC remo...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Separation and Purification Technology
سال: 2021
ISSN: ['1873-3794', '1383-5866']
DOI: https://doi.org/10.1016/j.seppur.2020.117840