Efficiently capturing tobacco specific nitrosamines with Hβ zeolite in solution

[Display omitted] •Hβ zeolite, the optimal TSNA capturer in solution is discovered.•More than 70 mg g−1of NNK can be trapped by Hβ in aqueous solution.•Hβ trapped 58∼347 μg g−1 TSNA in tobacco solution, including 75%–90% of NNK.•Adsorption isotherms of NNK onto Hβ from 290 K to 314 K were determined...

Full description

Saved in:
Bibliographic Details
Published in:Journal of hazardous materials 2019-03, Vol.365, p.196-204
Main Authors: Shi, Chun Ling, Sun, Xiao Dan, Gao, Yi Han, Zheng, Sai Jing, Li, Shuo Hao, Yang, Jing, Wang, Yang Zhong, Xiong, Jun-Wei, Shen, Yi, Wang, Ying, Zhu, Jian Hua
Format: Article
Language:English
Subjects:
Adsorption
Carcinogens - chemistry
Environmental protection
Hβ zeolite
Liquid adsorption
Nicotiana - chemistry
Nitrosamines - chemistry
Solutions
Temkin model
Thermodynamics
TSNA
Zeolites - chemistry
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:[Display omitted] •Hβ zeolite, the optimal TSNA capturer in solution is discovered.•More than 70 mg g−1of NNK can be trapped by Hβ in aqueous solution.•Hβ trapped 58∼347 μg g−1 TSNA in tobacco solution, including 75%–90% of NNK.•Adsorption isotherms of NNK onto Hβ from 290 K to 314 K were determined. The high-efficiency capture of Tobacco Specific Nitrosamines by Hβ zeolite in solution is reported for the first time, along with the adsorption of 4-methylnitrosamino-1-3-pyridyl-1-butanone in aqueous solution. Different from other zeolites such as NaZSM-5, the specific pore size of Hβ exerted a crucial function endowing the zeolite a higher removal of TSNA and selectivity of NNK. The adsorption thermodynamics of NNK by Hβ in aqueous adsorption was fitted to Temkin adsorption model with a linearly decreasing isosteric heat of adsorption. In addition, the adsorptive capacity of Hβ zeolite for NNK reached over 70 mg g−1, offering a powerful sorbent of TSNA to protect environment.
ISSN:0304-3894
1873-3336
DOI:10.1016/j.jhazmat.2018.10.095