Adsorption of Phthalate Acid Esters by Activated Carbon: The Overlooked Role of the Ethanol Content

Zhou, Yuanhao; Zhao, Bingyu; Wang, Lingxuan; Li, Ting; Ye, Hong; Li, Shuangyang; Huang, Mingquan; Zhang, Xianren

doi:10.3390/foods11142114

Open AccessArticle

Adsorption of Phthalate Acid Esters by Activated Carbon: The Overlooked Role of the Ethanol Content

by

Yuanhao Zhou

^1,2,

Bingyu Zhao

^1,2,

Lingxuan Wang

^1,2,

Ting Li

^1,2,

Hong Ye

^1,2,*

,

Shuangyang Li

^1,2,

Mingquan Huang

^1,2 and

Xianren Zhang

³

¹

Key Laboratory of Brewing Molecular Engineering of China Light Industry, Beijing Technology and Business University, Beijing 100048, China

²

Beijing Laboratory of Food Quality and Safety, Beijing Technology and Business University, Beijing 100048, China

³

State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing 100029, China

^*

Author to whom correspondence should be addressed.

Foods 2022, 11(14), 2114; https://doi.org/10.3390/foods11142114

Submission received: 22 June 2022 / Revised: 10 July 2022 / Accepted: 13 July 2022 / Published: 15 July 2022

(This article belongs to the Section Drinks and Liquid Nutrition)

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Abstract

Ethanol has great effects on the adsorption of phthalate acid esters (PAEs) on activated carbon (AC), which are usually overlooked and hardly studied. This study investigated the overlooked effects of ethanol on the adsorption of PAEs in alcoholic solutions. The adsorption capacities of dibutyl phthalate (DBP) on AC in solutions with ethanol contents of 30, 50, 70, and 100 v% were only 59%, 43%, 19%, and 10% of that (16.39 mg/g) in water, respectively. The ethanol content increase from 50 v% to 100 v% worsened the adsorption performances significantly with the formation of water–ethanol–DBP clusters (decreasing from 13.99 mg/g to 2.34 mg/g). The molecular dynamics simulation showed that the DBP tended to be distributed farther away from the AC when the ethanol content increased from 0 v% to 100 v% (the average distribution distance increased from 5.25 Å to 15.3 Å). The PAEs with shorter chains were more affected by the presence of ethanol than those with longer chains. Taking DBP as an example, the adsorption capacity of AC in ethanol (0.41 mg/g) is only 2.2% of that in water (18.21 mg/g). The application results in actual Baijiu samples showed that the adsorption of PAEs on AC had important effects on the Baijiu flavors.

Keywords: activated carbon; adsorption; phthalate acid esters; alcohol–water solutions; application

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MDPI and ACS Style

Zhou, Y.; Zhao, B.; Wang, L.; Li, T.; Ye, H.; Li, S.; Huang, M.; Zhang, X. Adsorption of Phthalate Acid Esters by Activated Carbon: The Overlooked Role of the Ethanol Content. Foods 2022, 11, 2114. https://doi.org/10.3390/foods11142114

AMA Style

Zhou Y, Zhao B, Wang L, Li T, Ye H, Li S, Huang M, Zhang X. Adsorption of Phthalate Acid Esters by Activated Carbon: The Overlooked Role of the Ethanol Content. Foods. 2022; 11(14):2114. https://doi.org/10.3390/foods11142114

Chicago/Turabian Style

Zhou, Yuanhao, Bingyu Zhao, Lingxuan Wang, Ting Li, Hong Ye, Shuangyang Li, Mingquan Huang, and Xianren Zhang. 2022. "Adsorption of Phthalate Acid Esters by Activated Carbon: The Overlooked Role of the Ethanol Content" Foods 11, no. 14: 2114. https://doi.org/10.3390/foods11142114

APA Style

Zhou, Y., Zhao, B., Wang, L., Li, T., Ye, H., Li, S., Huang, M., & Zhang, X. (2022). Adsorption of Phthalate Acid Esters by Activated Carbon: The Overlooked Role of the Ethanol Content. Foods, 11(14), 2114. https://doi.org/10.3390/foods11142114

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Adsorption of Phthalate Acid Esters by Activated Carbon: The Overlooked Role of the Ethanol Content

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