Journal
JOURNAL OF ENVIRONMENTAL SCIENCES
Volume 21, Issue 1, Pages 127-136Publisher
SCIENCE PRESS
DOI: 10.1016/S1001-0742(09)60022-X
Keywords
fly ash; zeolite; heavy metal; adsorption; recovery
Categories
Funding
- Special Funds for Doctor's Station of University [20060288008]
- Cultivation Fund of the Key Scientific and Technical Innovation Project
- Ministry of Education of China [708079]
Ask authors/readers for more resources
The pure-form zeolites (A and X) were synthesized by applying a two-stage method during hydrothermal treatment of fly ash prepared initial Cu and Zn gel. The difference of adsorption capacity of both synthesized zeolits was assessed using Cu and Zn as target heavy metal ions. It was found that adsorption capacity of zeolite A showed much higher value than that of zeolite X. Thus, attention was focused on investigating the removal performance of heavy metal ions in aqueous solution on zeolite A, comparing with zeolite HS (hydroxyl-solidate) prepared from the residual fly ash (after synthesis of pure-form zeolite A from fly ash) and a commercial grade zeolite A. Batch method was used to study the influential parameters of the adsorption process. The equilibrium data were well fitted by the Langmuir model. The removal mechanism of metal ions followed adsorption and ion exchange processes. Attempts were also made to recover heavy metal ions and regenerate adsorbents.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available