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Efficient Removal of Nonylphenol Contamination from Water Using Optimized Magnesium Silicate

文献类型: 外文期刊

作者: Yan, Xu 1 ; Zhang, Qicai 1 ; Rao, Qinxiong 1 ; Chen, Shanshan 1 ; Wang, Xianli 1 ; Song, Wei 1 ; Cheng, Lin 1 ; Guan, Shuhui 1 ; Song, Weiguo 1 ;

作者机构: 1.Shanghai Acad Agr Sci, Inst Agrifood Stand & Testing Technol, Shanghai 201403, Peoples R China

2.Shanghai Ocean Univ, Coll Food Sci, Shanghai 201306, Peoples R China

3.Shanghai Engineer Res Ctr Agrofood Qual & Safety, Shanghai 201403, Peoples R China

关键词: adsorption; 4-nonylphenol; magnesium silicate; kinetic model; isotherm model

期刊名称:MATERIALS ( 影响因子:3.748; 五年影响因子:4.042 )

ISSN:

年卷期: 2022 年 15 卷 13 期

页码:

收录情况: SCI

摘要: Nonylphenol (NP) is considered to be an environmentally toxic, endocrine-disrupting chemical that affects humans and ecosystems. Adsorption is one of the most promising approaches for the removal of nonylphenol contamination from water. Herein, in order to design an adsorbent with high adsorption capacity, magnesium silicate with different Mg/Si ratios was successfully synthesized by a sol-gel method at 60 degrees C. Magnesium silicate with a Mg/Si ratio of 1:6 was found to possess the best adsorption performance, with maximum 4-NP sorption 30.84 mg/g under 25 degrees C and 0.2 g/L adsorbent dose. The adsorption was negatively affected by increasing adsorbent dose and temperature. The kinetics and isotherm of 4-NP adsorption by Mg/Si were well described by the pseudo-second-order and Sips model, respectively, and behavior was proven to be physisorption-enhanced by a chemical effect. Detailed characterization by XRD, BET, and SEM confirmed that the magnesium silicate possesses an amorphous, mesoporous structure. The study will contribute to the applicability of cheap magnesium silicate for removal of NP contamination in water.

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