Adsorption of cationic dyes from aqueous solution using hydrophilic silica aerogel <i>via</i> ambient pressure drying

Qun Liu; Yuan Liu; Zhihua Zhang; Xiaodong Wang; Jun Shen

doi:10.1016/j.cjche.2020.04.023

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Adsorption of cationic dyes from aqueous solution using hydrophilic silica aerogel via ambient pressure drying

Energy, Resources and Environmental Technology | Updated：2026-01-06

- Adsorption of cationic dyes from aqueous solution using hydrophilic silica aerogel via ambient pressure drying
- Chinese Journal of Chemical Engineering Vol. 28, Issue 9, Pages: 2467-2473(2020)
- Affiliations：
  
  1. College of Science, University of Shanghai for Science and Technology,Shanghai,China,200093
  2. Shanghai Key Laboratory of Special Artificial Microstructure Materials and Technology, Department of Physics Science and Engineering of Tongji University,Shanghai,China,200092
- Author bio：
- Funds：
- DOI：10.1016/j.cjche.2020.04.023
  CLC：
- Published：2020
- Accepted：
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ambient pressure drying[J]. 中国化学工程学报, 2020, 28(9): 2467-2473.
DOI：

ambient pressure drying[J]. 中国化学工程学报, 2020, 28(9): 2467-2473. DOI： 10.1016/j.cjche.2020.04.023.

摘要

Abstract

In order to remove the organic dyes of textile waste water

the silica aerogel was successfully prepared by using E-40 as a novel precursor and then dried in ambient pressure. The synthesized sample was verified by Scanning Electron Microscopy (SEM) and Fourier Transform Infrared Spectroscopy (FTIR). After calcining

the hydrophilic silica aerogel (HSA) was used as adsorbent to remove Methylene Blue (MB)

Malachite Green (MG)

and Gentian Violet (GV) from aqueous solution. The effects of initial concentration of dyes and adsorbent dosage on the adsorption process were examined. It was found that HSA showed excellent adsorption capacities

the maximum percentage of removal dyes could reach 98%. Herein

the Langmuir

Freundlich and de Boer-Zwikker isotherm modes were employed to discuss the adsorption behavior. The results indicated that the de Boer-Zwikker model can effectively describe the adsorption behavior. Besides

the HSA could be utilized as the recyclable adsorbent in degradation experiment

after five cycles

no obvious loss of adsorption capacity was found. As an efficient

low-cost

environmental friendly and recyclable adsorbent

silica aerogel is expected to be used for dyes removal.

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Adsorption of cationic dyes from aqueous solution using hydrophilic silica aerogel via ambient pressure drying

DOI：10.1016/j.cjche.2020.04.023

摘要

Abstract

关键词

Keywords

references