| Title | Toward the Next Generation of Sustainable Membranes from Green Chemistry Principles |
|---|---|
| ID_Doc | 9187 |
| Authors | Xie, WC; Li, T; Tiraferri, A; Drioli, E; Figoli, A; Crittenden, JC; Liu, BC |
| Title | Toward the Next Generation of Sustainable Membranes from Green Chemistry Principles |
| Year | 2021 |
| Published | Acs Sustainable Chemistry & Engineering, 9.0, 1 |
| Abstract | Large-scale membrane technology has been widely implemented and rapidly growing for roughly 40 years. However, considering its entire life cycle, there are aspects being characterized by low sustainability, and this industry certainly cannot be defined as green. In the membrane manufacturing process, raw materials mainly rely on nonbiodegradable petroleum-based polymers and hazardous solvents. These materials are thus associated with the energy crisis and with disposal burdens at the end of their lifetime, and they pose risks to workers and the environment. Therefore, biobased polymers and green solvents should be employed within the membrane preparation process and replace traditional ones. Moreover, the wastewater generated from membrane fabrication processes contains an important amount of organic solvents and should be efficiently treated or recycled before discharge. The application of artificial intelligence in membrane manufacturing and use processes can also improve efficiency significantly. Finally, a large number of spent membrane elements should also be reused and recovered, rather than landfilled. This review critically evaluates the recent advances in methods to improve the sustainability of membrane technology, specifically emphasizing the progresses made, with regard to the above aspects. This review thus analyzes the needs for membrane industry transformations in the light of circular economy. |
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