Adsorption of thallium(I) on rutile nano-titanium dioxide and environmental implications

PeerJ

article

Weilong Zhang¹  Yang Wu¹  Jin Wang¹  Juan Liu¹  Haifeng Lu²  Shuijing Zhai³  Qiaohui Zhong¹  Siyu Liu¹  Wanying Zhong¹  Chunling Huang¹  Xiaoxiang Yu¹  Wenhui Zhang¹  Yongheng Chen¹ 

[1] Innovation Center and Key Laboratory of Water Quality and Conservation in the Pearl River Delta, Ministry of Education, School of Environmental Science and Engineering, Guangzhou University;Wuhan Digital Engineering Institute;Key Laboratory of Humid Subtropical Eco-geographical Processes, Ministry of Education, College of Geography Science, Fujian Normal University;Guangzhou Institute of Geochemistry, Chinese Academy of Sciences

关键词: Thallium;    Adsorption behavior;    Rutile nano-titanium dioxide;   

DOI  :  10.7717/peerj.6820

学科分类：社会科学、人文和艺术（综合）

来源: Inra

【 摘 要 】

9. Uptake of Tl(I) was very fast on RNTD in the first 15 min then slowed down. The adsorption of Tl(I) on RNTD was an exothermic process; and the adsorption isotherm of Tl(I) followed the Langmuir model, with the maximum adsorption amount of 51.2 mg/g at room temperature. The kinetics of Tl adsorption can be described by a pseudo-second-order equation. FT-IR spectroscopy revealed that -OH and -TiOO-H play an important role in the adsorption. All these results indicate that RNTD has a fast adsorption rate and excellent adsorption amount for Tl(I), which can thus alter the transport, bioavailability and fate of Tl(I) in aqueous environment.

【 授权许可】

CC BY