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

• 作者: Jun Shen Qun Liu Xiaodong Wang Yuan Liu Zhihua Zhang
• 来源期刊: 中国化学工程学报（英文版）
• 年，卷（期）: 2020,（9）
• 所属期刊栏目: Energy, Resources and Environmental Technology
• 页码范围: 2467-2473
• 页数: 7页
• 语种: 英文

摘要

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.

作者信息

序号	姓名	单位	发文数	被引次数	H指数	G指数
1	Qun Liu		1	0	0.0	0.0
2	Yuan Liu		1	0	0.0	0.0
3	Zhihua Zhang		1	0	0.0	0.0
4	Xiaodong Wang		1	0	0.0	0.0
5	Jun Shen		1	0	0.0	0.0