The following information was submitted:
Transactions: WSEAS TRANSACTIONS ON ENVIRONMENT AND DEVELOPMENT
Transactions ID Number: 89-264
Full Name: Lucija Foglar
Position: Assistant Professor
Age: ON
Sex: Female
Address: Maruliæev trg 19, 10000 Zagreb
Country: CROATIA (HRVATSKA)
Tel: +38514833850
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E-mail address: lfoglar@fkit.hr
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Title of the Paper: The use of bacteria attached to Lewatit M600 for denitrification of the Cetina surface water
Authors as they appear in the Paper: Lucija Foglar,Ana-Marija Babiæ, Mario Šiljeg
Email addresses of all the authors: lfoglar@fkit.hr, anamarija0408986@yahoo.com, mario.siljeg@vodotehnika.hr
Number of paper pages: 10
Abstract: The selected mixed bacterial culture was attached to the nitrate selective ion exchange resin - Lewatit M600 (NSI) and used for investigation of nitrate removal from the surface Cetina water (SCW). The investigated system enables bonding of nitrate ions and simultaneously, the degradation of bonded nitrate. The nitrate adsorption on NSI was studied and described with the Freundlich isotherm. With the use of bacterial cells attached on NSI, the nitrate (50 - 200 mg NO3-N/L) was completely removed from the SCW, at a methanol to nitrate-N mass (C/N) ratio of 4.5:1, during 4-7 hours at pH = 7.2 and 25 °C under static anoxic conditions. The influence of initially present methanol on the denitrification process was investigated and the required C/N ratio of 2.5:1 was determined, although the denitrification process was faster in the presence of increased C/N ratios. The applicability of the bacteria attached to the NSI for fast and efficient nitrate removal from the surf!
ace Cetina water at different temperatures was further investigated. The denitrification rates were calculated according to the zero -order reaction model. The activation energy, EA and Arrenius factor, Ar for denitrification were 11.40 kJ/mol and 1790.05 mg NO3-N/Lh, respectively.
Keywords: Bacteria, Immobilization, Ion exchanger, Nitrate, Nitrite, Denitrification
EXTENSION of the file: .pdf
Special (Invited) Session: Nitrate removal from the Cetina surface water by using bacteria attached to Lewatit M600
Organizer of the Session: 697-220.doc
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