Journal
KOREAN JOURNAL OF CHEMICAL ENGINEERING
Volume 32, Issue 7, Pages 1323-1326Publisher
KOREAN INSTITUTE CHEMICAL ENGINEERS
DOI: 10.1007/s11814-014-0342-6
Keywords
Fly Ash; Medium Calcium Content; Kinetics; Phosphate Removal Mechanism; Desorption
Funding
- National Natural Science Foundation of China [21206080]
- Postdoctoral Innovation Fund of Shandong Province [201203027]
Ask authors/readers for more resources
Excessive discharge of phosphate into water bodies may cause eutrophication and affect the natural water quality. The adsorption behavior of phosphate from aqueous solution on fly ash was investigated by a medium calcium fly ash in weak acid solution. Experimental findings showed that removal of phosphate was pH-dependent with the maximum adsorption capacity at the initial solution pH of 5.0-7.0. The increment in the initial phosphate concentration and temperature enhanced the adsorption capacity. Kinetic studies of phosphate followed the pseudo-second-order model. The predominant removal mechanism was ligand exchange reaction on the basis of desorption experiment. The adsorbed phosphate was difficult to leach to the environment from the waste fly ash.
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