Performance tuning of chitosan-based membranes by protonated 2-Pyrrolidone-5-carboxylic acid-sulfolane DES for effective water/ethanol separation by pervaporation

被引:21
作者
Castro-Munoz, Roberto [1 ,2 ]
Cichocki, Lukasz [1 ]
Plata-Gryl, Maksymilian [1 ]
Boczkaj, Grzegorz [1 ,3 ]
Galiano, Francesco [4 ]
机构
[1] Gdansk Univ Technol, Fac Civil & Environm Engn, Dept Sanit Engn, 11-12 Narutowicza St, PL-80233 Gdansk, Poland
[2] Tecnol Monterrey, Campus Toluca,Ave Eduardo Monroy Cardenas 2000 Sa, Toluca De Lerdo 50110, Mexico
[3] Gdansk Univ Technol, Adv Mat Ctr, 11-12 Narutowicza St, PL-80233 Gdansk, Poland
[4] CNR, Inst Membrane Technol, Via P Bucci 17-C, I-87036 Arcavacata Di Rende, CS, Italy
关键词
Ethanol dehydration; Carboxylic acid-based DES; Natural deep eutectic solvents  (NADES); Functional materials; Composite membranes; Biorefinery; DEEP EUTECTIC SOLVENTS; MIXED-MATRIX MEMBRANES; ETHANOL; DEHYDRATION; MIXTURES; PERMEATION; METHANOL;
D O I
10.1016/j.cherd.2023.01.049
中图分类号
TQ [化学工业];
学科分类号
0817 ;
摘要
Today, the applicability of deep eutectic solvents (DES) in various fields, including mem-brane science and technology, is extensively investigated. In pioneering works, we have implemented different DES as a component of chitosan (CS)-based flat membranes for pervaporation (PV) separation. Herein, we present a new protonated (by sulphuric acid) 2-Pyrrolidone-5-carboxylic acid: sulfolane DES, as a green additive for its chemical blending and thus study its effect in CS structure. The resultant flat CS-based membranes have been characterized and tested for their ability in separating water molecules from etha-nolic mixtures (10 wt% water in ethanol) using PV. Experiments revealed a progressive increase in total permeation along with increase of temperature in the range of 20-50 degrees C. Simultaneously, the value of separation factor was reduced. The maximum permeation (approximately 0.44 kg m-2 h-1) was observed for the highest experimental temperature, in which water was the main component, while the highest separation factor (approxi-mately 518) was observed for lowest operating temperature. It was confirmed that ap-plication of selected DES allowed to improve the permeation rates in comparison with the bare CS membrane. As a perspective, such membranes could be tested for another hy-drophilic pervaporation applications for the removal of polar compounds - with high applicability in biorefineries.(c) 2023 Institution of Chemical Engineers. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码:401 / 413
页数:13
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