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Content Provider | World Health Organization (WHO)-Global Index Medicus |
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Author | Qiu, Yue Liu, Zhu Yun Wang, Ying Tao, Yu Fei Fang, Shu Yu Zhu, Jian Hua |
Description | Country affiliation: China Author Affiliation: Tao YF ( Key Laboratory of Mesoscopic Chemistry of MOE, College of Chemistry and Chemistry Engineering, Nanjing University, Nanjing 210093, China.) |
Abstract | To study whether natural clinoptilolite could selectively capture Pb(2+) ion in the aqueous solution containing salt and glycine as well as nitrosamines, the natural zeolite was utilized in the complex solution with pH value of 1.2 in comparison with other porous materials such as zeolite NaZSM-5 and activated carbon. Clinoptilolite exhibited the highest capability in adsorbing Pb(2+) ion in the solution at 37 degrees C, achieving the capacity of 7 mg/g, two times more than that by other zeolites and six times over that by activated carbon, and the adsorption equilibrium could be achieved within 2h. The impacts of solid-liquid ratio, initial concentration of Pb(2+) and the competition of other metal ions or volatile nitrosamines on the adsorption were examined, and the change in Gibbs energy for the ion-exchanged of Pb(2+) ion by clinoptilolite was discussed, through which the ion-exchange process was proven to be spontaneous. Moreover, both the selectivity of clinoptilolite toward Pb(2+) ion in complex solution and the venial toxicity of clinoptilolite on the viability of RAW264.7 cells were investigated in this article. |
ISSN | 03043894 |
Issue Number | 1-3 |
Volume Number | 180 |
e-ISSN | 18733336 |
Journal | Journal of Hazardous Materials |
Language | English |
Publisher | Elsevier |
Publisher Date | 2010-08-15 |
Publisher Place | Netherlands |
Access Restriction | Subscribed |
Subject Keyword | Lead Chemistry Zeolites Adsorption Microscopy, Electron, Scanning Models, Molecular Solutions Water X-ray Diffraction Journal Article Research Support, Non-u.s. Gov't Discipline Environmental Science Discipline Environmental Chemistry |
Content Type | Text |
Resource Type | Article |
Subject Domain (in MeSH) | Inorganic Chemicals Pharmaceutical Preparations Diagnosis Investigative Techniques Physical Phenomena |
Subject | Environmental Engineering Health, Toxicology and Mutagenesis Waste Management and Disposal Pollution Environmental Chemistry |
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