膜科学与技术

Position：Home >> Abstract

Study on ethanol dehydration by pervaporation of PD@ZIF-8@PPy/PVA mixed matrix membrane

Authors： LV Jing, MAO Heng, XU Lihao, WANG Sen, ZHAO Zhiping

Units： School of and chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing 102488, China

KeyWords： pervaporation; PD@ZIF-8@PPy; polyvinyl alcohol; mixed matrix membrane; ethanol dehydration

ClassificationCode：

year,volume(issue):pagination： 2023,43(1):45-55

Abstract：

Pervaporation (PV) membrane separation technology has been widely used in the field of biofuel separation owing to the advantages of low energy consumption, high efficiency, simple operation, and no limit to gas-liquid equilibrium. High-performance membrane materials are the key to the efficient separation of PV process. According to the previous work of our group, a continuous pearl necklace (ZIF-8@PPy) structure was constructed by growing ZIF-8 particles on polypyrrole (PPy) nanotubes. In this paper, the hydrophilic modification of ZIF-8@PPy was performed by using dopamine to prepare the composite material PD@ZIF-8@PPy. And then, the PD@ZIF-8@PPy was introduced into polyvinyl alcohol (PVA) to prepare mixed matrix membranes (MMMs) for ethanol dehydration via pervaporation. For the separation of 90% ethanol aqueous solution at 40 ℃, the separation factor of the prepared membrane could reach 582 (3 times that of pure PVA membrane), the total flux was 278 g/(m2?h) (1.8 times that of pure PVA membrane). Moreover, the resultant membrane presented good long-term stability. The as-prepared PD@ZIF-8@PPy/PVA MMMs have good application prospect in fuel ethanol production.

Funds：

AuthorIntro：

吕静（1994-），女，河南濮阳人，硕士研究生，主要从事混合基质膜与膜分离方面研究.

Reference：

Service：

【Download】【Collect】

《膜科学与技术》编辑部 Address: Bluestar building, 19 east beisanhuan road, chaoyang district, Beijing; 100029 Postal code; Telephone：010-80492417/010-80485372; Fax：010-80485372 ; Email：mkxyjs@163.com