Volume 22, Number 97 (2-2013)                   J Mazandaran Univ Med Sci 2013, 22(97): 250-256 | Back to browse issues page


XML Persian Abstract Print


Download citation:
BibTeX | RIS | EndNote | Medlars | ProCite | Reference Manager | RefWorks
Send citation to:

Dianati Tilaki R A, Kahe D, Zazouli M A. Efficiency of Zeolite Clinoptilolite in Removal of Ammoniumion from Polluted Waters. J Mazandaran Univ Med Sci. 2013; 22 (97) :250-256
URL: http://jmums.mazums.ac.ir/article-1-1815-en.html

Abstract:   (6592 Views)
Background and purpose: Ammonia in form of ammonium ions pollutes the acceptor water through industrial, domestic and agricultural wastewater. Ammonium ions are toxic and could decrease the dissolved oxygen in water and endanger the aquatic life. One of the conventional methods for removing ammonia from water and wastewater is exchanging the ions using zeolites. The aim of this study was to assess the efficacy of zeolite Clinoptilolite in removing ammonia from water, in both batch and continuous systems. Materials and methods: In this study batch experiments were exposed to different concentrations of natural Clinoptilolite (5, 10, and 50 g/l) with aqueous solution containing ammonium ions (1, 5and, 10 mg/l) in different exposure times (10 to 240 minutes). The continuous experiments were also conducted at ammonium concentrations of 5 and10 mg/l. Results: The maximum ammonium absorption occurred at pH=7 and in 60 minutes exposure time. Increase in initial concentration of ammonium increased the sorption capacity. Also, sorption capacity decreased when the absorbent material increased. Considering higher correlation coefficient (R2) the isotherm obtained in this study matches the Freundlich isotherm model. The results of column tests showed longer time to reach the breakpoint when initial concentration of ammonium decreased. Breakpoints for ammonium concentrations of 5 and 10 mg/l were 6.45 and 6.32 mg/g, respectively. Conclusion: This study proved that ion exchange using zeolite Clinoptilolite is a low cost method that could result in complete removal of ammonium from water.
Full-Text [PDF 412 kb]   (1665 Downloads)    
Type of Study: Research(Original) | Subject: health

Add your comments about this article : Your username or email:
Write the security code in the box

Send email to the article author


© 2015 All Rights Reserved | Journal of Mazandaran University of Medical Sciences

Designed & Developed by : Yektaweb