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HERO ID
2953096
Reference Type
Journal Article
Title
Evaluation of ammonia-nitrogen removal efficiency from aqueous solutions by ultrasonic irradiation in short sonication periods
Author(s)
Ozturk, E; Bal, N
Year
2015
Is Peer Reviewed?
1
Journal
Ultrasonics Sonochemistry
ISSN:
1350-4177
EISSN:
1873-2828
Volume
26
Page Numbers
422-427
Language
English
PMID
25753490
DOI
10.1016/j.ultsonch.2015.02.012
Web of Science Id
WOS:000355024300052
Abstract
In this study, mechanisms and efficiency of ammonia-nitrogen removal from aqueous solutions by ultrasonic irradiation were investigated. Depending on the factors affecting the sonication (initial concentration, initial pH, ultrasonic power density and sonication period), sonication tests were carried out and ammonium-nitrogen removal efficiency by ultrasonic irradiation was determined. In these experiments, ammonia-nitrogen removal efficiency was achieved in the range of 8-64%. In short sonication periods, the best ammonia-nitrogen removal efficiency was achieved at pH 8.2-11. Lower ammonia-nitrogen removal efficiency was observed in high initial ammonia-nitrogen concentration of solutions. It was observed that high initial ammonia-nitrogen concentrations may led to decreased ammonia-nitrogen removal efficiency however quantity of ammonia-nitrogen removal was higher. Because high initial concentration had a negative impact on the sonochemical reactions the heat of cavitation bubbles was reduced. Ammonia-nitrogen removal efficiency was increased with ultrasonic density and sonication period. This study showed that effective ammonia-nitrogen removal could be achieved by the ultrasonic irradiation in short sonication periods (as 60-600 s). Specific cost of ammonia-nitrogen removal by the ultrasonic irradiation from simulated ground water, surface water, wastewater and landfill leachate was also calculated. The specific removal cost was varied between 0.01 and 0.25 $/g ammonia-nitrogen. (C) 2015 Elsevier B.V. All rights reserved.
Keywords
Ammonia-nitrogen; Cavitation; Sonication; Ultrasonic irradiation; Wastewater; Water
Tags
IRIS
•
Ammonia
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