Sorptive removal of phenolic endocrine disruptors by functionalized biochar: Competitive interaction mechanism, removal efficacy and application in wastewater

被引：113

作者：

Ahmed, Mohammad Boshir ^{[1
]}

Zhou, John L. ^{[1
]}

Huu Hao Ngo ^{[1
]}

Johir, Md Abu Hasan ^{[1
]}

Sornalingam, Kireesan ^{[1
]}

机构：

[1] Univ Technol Sydney, Sch Civil & Environm Engn, 15 Broadway, Ultimo, NSW 2007, Australia

来源：

CHEMICAL ENGINEERING JOURNAL | 2018年 / 335卷

关键词：

Functionalized biochar; EDC; Competitive sorption; Hydrogen bond; Sewage effluent; PERSONAL CARE PRODUCTS; CONTAMINANT REMOVAL; ACTIVATED CARBONS; CHEMICALS EDCS; BISPHENOL-A; ADSORPTION; PHARMACEUTICALS; PROGRESS; ANTIBIOTICS; COMPOUND;

D O I：

10.1016/j.cej.2017.11.041

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Sorptive removal of six phenolic endocrine disrupting chemicals (EDCs) estrone (E1), 17 beta-estradiol (E2), estriol (E3), 17 alpha-ethynylestradiol (EE2), bisphenol A (BPA) and 4-tert-butylphenol (4tBP) by functionalized biochar (fBC) through competitive interactions was investigated. EDC sorption was pH dependent with the maximum sorption at pH 3.0-3.5 due to hydrogen bonds and pi-pi interactions as the principal sorptive mechanism. Sorption isotherm of the EDCs was fitted to the Langmuir model. Sorption capacities and distribution coefficient values followed the order E1 > E2 >= EE2 > BPA > 4tBP > E3. The findings suggested that EDC sorption occurred mainly through pseudo-second order and external mass transfer diffusion processes, by forming H-bonds along with pi-pi electron-donor-acceptor (EDA) interactions at different pH. The complete removal of similar to 500 mu g L-1 of each EDC from different water decreased in the order: deionised water > membrane bioreactor (MBR) sewage effluent > synthetic wastewater. The presence of sodium lauryl sulphonate and acacia gum in synthetic wastewater significantly suppressed sorption affinity of EDCs by 38-50%, hence requiring more fBC to maintain removal efficacy.

引用

页码：801 / 811

页数：11

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