The effect of zeolite treatment by acids on sodium adsorption ratio of coal seam gas water

Wang, Xiaoyu, Ozdemir, Orhan, Hampton, Marc A., Nguyen, Anh V. and Do, Duong D. (2012) The effect of zeolite treatment by acids on sodium adsorption ratio of coal seam gas water. Water Research, 46 16: 5247-5254. doi:10.1016/j.watres.2012.07.006

Author Wang, Xiaoyu
Ozdemir, Orhan
Hampton, Marc A.
Nguyen, Anh V.
Do, Duong D.
Title The effect of zeolite treatment by acids on sodium adsorption ratio of coal seam gas water
Journal name Water Research   Check publisher's open access policy
ISSN 0043-1354
Publication date 2012-10-15
Year available 2012
Sub-type Article (original research)
DOI 10.1016/j.watres.2012.07.006
Open Access Status Not yet assessed
Volume 46
Issue 16
Start page 5247
End page 5254
Total pages 8
Place of publication London, United Kingdom
Publisher IWA Publishing
Language eng
Abstract Many coal seam gas (CSG) waters contain a sodium ion concentration which is too high relative to calcium and magnesium ions for environment acceptance. Natural zeolites can be used as a cheap and effective method to control sodium adsorption ratio (SAR, which is a measure of the relative preponderance of sodium to calcium and magnesium) due to its high cation exchange capacity. In this study, a natural zeolite from Queensland was examined for its potential to treat CSG water to remove sodium ions to lower SAR and reduce the pH value. The results demonstrate that acid activated zeolite at 30%wt solid ratio can reduce the sodium content from 563.0 to 182.7 ppm; the pH from 8.74 to 6.95; and SAR from 70.3 to 18.5. Based on the results of the batch experiments, the sodium adsorption capacity of the acid-treated zeolite is three times greater than that of the untreated zeolite. Both the untreated and acid-treated zeolite samples were characterized using zeta potential, surface characterization, DTA/TG and particle size distribution in order to explain their adsorption behaviours.
Keyword Desalination
Coal seam gas (CSG) water
Acid pre-treatment
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Chemical Engineering Publications
Official 2013 Collection
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