Removal of vanadium from wastewater by multi-walled carbon nanotubes

被引：11
作者：
Yu, Yaqi [1 ]
Wei, Qingqing [1 ]
Li, Jinxin [1 ]
Yang, Jinyan [1 ]
机构：
[1] Sichuan Univ, Coll Architecture & Environm, Chengdu 610065, Peoples R China
来源：
FULLERENES NANOTUBES AND CARBON NANOSTRUCTURES | 2017年 / 25卷 / 03期
基金：
中国国家自然科学基金;
关键词：
Multi-walled carbon nanotubes; Modification; Vanadium; Adsorption; Aqueous solution; AQUEOUS-SOLUTION; ADSORPTION-ISOTHERMS; TRACE AMOUNTS; METAL-IONS; KINETICS; SORPTION; RECOVERY; CD(II); PB(II); EQUILIBRIUM;
D O I：
10.1080/1536383X.2016.1274306
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：
Nitric acid heating reflux modified multi-walled carbon nanotubes (HMWCNTs) were used for the removal of vanadium(V) in aqueous solution. The removal rate of vanadium(V) decreased with the increase of the initial vanadium(V) concentration and the solution pH, and increased with the increase of reaction time, HMWCNTs amount and solution temperature. The adsorption equilibrium and dynamic kinetics fitted the Langmuir adsorption isotherm and pseudo-second order models. The results obtained by scanning electron micrography and Fourier transform infrared spectroscopy analysis revealed that the hydroxyl and carboxyl functional groups are mainly responsible for the vanadium adsorption. This study showed that the HMWCNTs proved to be a considerable adsorbent for the removal of vanadium from wastewater.
引用
收藏
页码：170 / 178
页数：9
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