Removal of fluoride from drinking water using modified ultrafine tea powder processed using a ball-mill

被引：66

作者：

Cai, Huimei ^{[1
]}

Xu, Lingyun ^{[1
]}

Chen, Guijie ^{[1
]}

Peng, Chuanyi ^{[1
]}

Ke, Fei ^{[1
,2
]}

Liu, Zhengquan ^{[1
]}

Li, Daxiang ^{[1
]}

Zhang, Zhengzhu ^{[1
]}

Wan, Xiaochun ^{[1
]}

机构：

[1] Anhui Agr Univ, State Key Lab Tea Plant Biol & Utilizat, Sch Tea & Food Sci & Technol, Hefei 230036, Anhui, Peoples R China

[2] Anhui Agr Univ, Sch Sci, Hefei 230036, Peoples R China

来源：

APPLIED SURFACE SCIENCE | 2016年 / 375卷

基金：

中国博士后科学基金;

关键词：

Ultrafine tea powder; Ball-milling; Adsorption; Fluoride; Zirconium(IV); LAYERED DOUBLE HYDROXIDES; ADSORPTIVE REMOVAL; AQUEOUS-SOLUTION; SOLUTION CHEMISTRY; BONE CHAR; LOW-COST; DEFLUORIDATION; ADSORBENT; ZIRCONIUM; WASTE;

D O I：

10.1016/j.apsusc.2016.03.005

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

A low-cost and highly efficient biosorbent was prepared by loading zirconium(IV) onto ball-milled, ultra-fine tea powder (UTP-Zr) for removal of fluoride from drinking water. To evaluate the fluoride adsorption capacity of UTP-Zr over a wide range of conditions, the biosorbent dosage, contact time, initial pH, initial fluoride concentration and presence of other ions were varied. UTP-Zr performed well over the considerably wide pH range of 3-10. The residual concentration of Zr in the treated water was below the limit of detection (0.01 mg/L). Fluoride adsorption by the UTP-Zr biosorbent followed the Langmuir model, with a maximum adsorption capacity of 12.43 mgF/g at room temperature. The fluoride adsorption kinetics fit the pseudo-second-order kinetic model. The synthesized biosorbent was characterized by BET, SEM, EDS, XRD and XPS to reveal how UTP-Zr interacts with fluoride. Results from this study demonstrated that UTP-based biosorbents will be useful and safe for the removal of fluoride from drinking water. (C) 2016 Elsevier B.V. All rights reserved.

引用

页码：74 / 84

页数：11

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