Removal of nitrate in aquaria by means of electrochemically generated hydrogen gas as electron donor for biological denitrification

Grommen, R., Verhaege, M. and Verstraete, W. (2006) Removal of nitrate in aquaria by means of electrochemically generated hydrogen gas as electron donor for biological denitrification. Aquacultural engineering, 34 1: 33-39. doi:10.1016/j.aquaeng.2005.03.007


Author Grommen, R.
Verhaege, M.
Verstraete, W.
Title Removal of nitrate in aquaria by means of electrochemically generated hydrogen gas as electron donor for biological denitrification
Journal name Aquacultural engineering   Check publisher's open access policy
ISSN 0144-8609
Publication date 2006-01
Sub-type Article (original research)
DOI 10.1016/j.aquaeng.2005.03.007
Volume 34
Issue 1
Start page 33
End page 39
Total pages 7
Editor J. Colt
J. van Rijn
Place of publication London
Publisher Applied Science Publishers/Elsevier
Language eng
Subject 030604 Electrochemistry
070401 Aquaculture
Abstract A hydrogenotrophic denitrification reactor was designed for the removal of nitrate from aquaria. An average hydrogen gas transfer up to 130 mg per day from the gas to the water phase was accomplished by recirculating the water from the denitrification reactor over a separate trickling filter column with a volume of 1.3 l. During batch experiments removal rates up to 36 mg N/l reactor per day were recorded at a hydraulic residence time of 12 h. To avoid the need for storage of large volumes of hydrogen gas in aquarium or aquaculture applications, an electrochemical cell was used to generate hydrogen gas. During a 7 day aquarium test, a nitrate removal rate up to 18.5 mg N/l reactor per day was recorded at an influent NO3−–N concentration of 20 mg/l
Keyword Nitrite
Aquarium
Hydrogenotrophic
Electrolysis
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Non-UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: Excellence in Research Australia (ERA) - Collection
Advanced Water Management Centre Publications
 
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