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천연 제올라이트를 이용한 고농도 질소 회수Recovery of nitrogen from high strength waste stream by using natural zeolite (Clinoptilolite)

Other Titles
Recovery of nitrogen from high strength waste stream by using natural zeolite (Clinoptilolite)
Authors
최오경이재우이관형Dong Dandan
Issue Date
2016
Publisher
대한상하수도학회
Keywords
Clinoptilolite; 고농도 질소; 질소 회수; 제올라이트; Clinoptilolite; High-concentration nitrogen; Nitrogen recovery; Zeolite
Citation
상하수도학회지, v.30, no.1, pp.105 - 111
Indexed
KCI
Journal Title
상하수도학회지
Volume
30
Number
1
Start Page
105
End Page
111
URI
https://scholar.korea.ac.kr/handle/2021.sw.korea/90917
ISSN
1225-7672
Abstract
This paper presents the applicability of natural zeolite (Clinoptilolite) for recovery of ammonium nitrogen from high-strength wastewater stream. Isotherm experiments showed the ammonium exchange Clinoptilolite followed Freundlich isotherm and its maximum exchange capacity was 18.13 mg NH4 +-N/g zeolite. The X-ray photoelectron spectroscopy (XPS) analysis indicated that a significant amount of nitrogen was adsorbed to the Clinoptilolite. Optimal flowrate for recovery of high concentration ammonium nitrogen was determined at 16 BV/d (=19.2 L/min) throughout the lab-scale column studies operated under various flowrate conditions. This study also provided a method to determine the recovery rate of final product of nitrogen fertilizer based on the model application to the lab-scale continuous data.
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