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Author:

Liu, Yimo (Liu, Yimo.) | Liu, Zhongbao (Liu, Zhongbao.) (Scholars:刘忠宝) | Wang, Zepeng (Wang, Zepeng.) | Sun, Weiming (Sun, Weiming.)

Indexed by:

EI Scopus SCIE

Abstract:

The water sorption and desorption properties of solid adsorbent materials are crucial in rotary dehumidification systems. Metal organic frameworks (MOFs) and hydrogels are mostly at the laboratory stage due to factors like the synthesis process and yield. In this study, we utilized an eco-friendly and large-scale synthesis method to prepare polyacrylamide (PAM) hydrogels (yielding approximately 500 mL from a single polymerization). Subsequently, PAM was then coated onto glass fiber paper (GFP), which serves as a commonly employed substrate in desiccant wheels. By incorporating the hygroscopic salt LiCl and optimizing the content of each component, the water sorption performance of the composite was notably improved. The water sorption and desorption performances, as well as cycling stability, were evaluated and compared with composites containing aluminum fumarate, LiCl, and GFP (AlFum-LiCl&GFP). The results revealed that PAM-LiCl&GFP outperformed AlFum-LiCl&GFP in terms of sorption capacity throughout various relative humidity (RH) levels. It achieved a water uptake of 1.06 g center dot g-1 at 25 degrees C and 30% RH, corresponding to a water sorption rate coefficient K of 15.32 x 10-4 s-1. Furthermore, the lower desorption temperature (60 degrees C) resulting in a desorption ratio of 82.6%, along with the excellent cycling stability and effective performance as a desiccant wheel module, provide evidence for the potential application of PAM-LiCl&GFP in desiccant wheels.

Keyword:

dehumidification polyacrylamide aluminum fumarate desiccant wheel water sorption

Author Community:

  • [ 1 ] [Liu, Yimo]Beijing Univ Technol, Dept Environm & Life, Beijing 100124, Peoples R China
  • [ 2 ] [Liu, Zhongbao]Beijing Univ Technol, Dept Environm & Life, Beijing 100124, Peoples R China
  • [ 3 ] [Wang, Zepeng]Beijing Univ Technol, Dept Environm & Life, Beijing 100124, Peoples R China
  • [ 4 ] [Sun, Weiming]Beijing Univ Technol, Dept Environm & Life, Beijing 100124, Peoples R China

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Source :

POLYMERS

Year: 2023

Issue: 18

Volume: 15

5 . 0 0 0

JCR@2022

ESI Discipline: CHEMISTRY;

ESI HC Threshold:20

Cited Count:

WoS CC Cited Count: 3

SCOPUS Cited Count: 3

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 4

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