Research on activated carbon fiber based composite adsorbents for atmospheric water harvesting

被引：0

作者：

Wang S. ^{[1
]}

Zheng X. ^{[1
]}

机构：

[1] School of Civil Engineering and Architecture, Zhejiang Sci-Tech University, Zhejiang, Hangzhou

来源：

Huagong Jinzhan/Chemical Industry and Engineering Progress | 2023年 / 42卷 / 10期

关键词：

adsorption; adsorption atmospheric water harvesting; composite adsorbents; daily potential water productivity; desorption;

D O I：

10.16085/j.issn.1000-6613.2022-2098

中图分类号：

学科分类号：

摘要：

Sorption-based atmospheric water harvesting (SAWH) can be utilized in a wide range of humidity. It is considered an effective way to alleviate the global fresh water shortage. The key to increase capability of SAWH system is the selection and development of adsorbents. In this paper, potassium formate and sodium acetate were impregnated to silica sol supported activated carbon fibers respectively, and composite adsorbents AS/pf and AS/S were developed. Their adsorption/desorption properties, potential daily water productivity and economic performance were studied and compared to adsorbent impregnated with lithium chloride (AS/L). Under the same adsorption and desorption conditions, adsorption and desorption rate coefficients of AS/pf were 108% and 161% higher than AS/L, while those of AS/S increased by 131% and 155%, respectively. Considering the cost of composite adsorbents and potential daily water productivity, AS/S was especially suitable for rapid-cycling SAWH systems when an adsorption-desorption cycle was no more than 3h. When the cycling time was longer than 3h, carefully selection between AS/S and AS/L was needed according to the conditions of practical projects. © 2023 Chemical Industry Press. All rights reserved.

引用

页码：5567 / 5573

页数：6

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