2006
DOI: 10.1080/10934520600873498
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Determination of Electron Donors by Comparing Reaction Rates for In Situ Bioremediation of Nitrate-Contaminated Groundwater

Abstract: Groundwater contaminated by nitrates occurs frequently. In this research, fumarate, acetate, formate, lactate, propionate, ethanol, and methane were evaluated as a potential electron donor and carbon source by comparing the denitrification rate for the in situ bioremediation of nitrate contaminated groundwater. The denitrification rate for each substance was the quickest in the order of: fumarate > hydrogen > formate/Lactate > ethanol > propionate > methanol > acetate. Microcosm studies were performed with fum… Show more

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Cited by 15 publications
(9 citation statements)
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“…Since the work of McCarty et al (1969), methanol has been the most common external electron donor for heterotrophic denitrification, because it is relatively inexpensive. Despite its widespread use, methanol gives slower denitrification kinetics than fumarate, ethanol, formate, acetate, butyrate, valerate, and propionate (Oa et al, 2006;Xu, 1996), probably because it must be oxidized to formate or formaldehyde before denitrifiers can metabolize it (Constantin and Fick, 1997;Xu, 1996). In addition, methanol is acutely toxic to humans and presents severe handling difficulties.…”
Section: Introductionmentioning
confidence: 99%
“…Since the work of McCarty et al (1969), methanol has been the most common external electron donor for heterotrophic denitrification, because it is relatively inexpensive. Despite its widespread use, methanol gives slower denitrification kinetics than fumarate, ethanol, formate, acetate, butyrate, valerate, and propionate (Oa et al, 2006;Xu, 1996), probably because it must be oxidized to formate or formaldehyde before denitrifiers can metabolize it (Constantin and Fick, 1997;Xu, 1996). In addition, methanol is acutely toxic to humans and presents severe handling difficulties.…”
Section: Introductionmentioning
confidence: 99%
“…Results of the three assayed conditions indicated that these parameters remained stable throughout the experiments (data not shown). On the one hand, it must be noted that pH remained mainly within the limits denitrification may occur (7.0<pH<8.5) (Brettar et al, 2002 ) time (h) (B) (A) Burchell et al, 2007;Oa et al, 2006) and, therefore, this parameter was not to be any limitation for denitrification to develop in the microcosm tests. On the other hand, pe measurements in the course of the tests were between 7.5 and 8.8.…”
Section: ) Time (H)mentioning
confidence: 99%
“…However, denitrification studies in drinking water sources, such as groundwater, have recently been reported (e.g. Gómez et al, 2000;Oa et al, 2006;Schipper and Vojvodic-Vukovic, 2000).…”
Section: Introductionmentioning
confidence: 99%
“…του γένους Ic1 (Vasiliadou et al 2006b), Brachynacterium sp και Bacillus cereus (Oa et al 2006), Moraxella lacunta, Pseudomonas testosterone και Pasteurella sp. (Fass et al 1994) αναφέρθηκαν να είναι απονιτροποιητικά βακτήρια σε απονιτροποιητικούς αντιδραστήρες.…”
Section: μικροβιολογίαunclassified
“…Στις συμβατικές πηγές άνθρακα εντάσσονται διάφορες οργανικές πηγές που έχουν μελετηθεί διεξοδικά στην βιβλιογραφία. Οι πιο κοινές πηγές άνθρακα είναι η μεθανόλη (Aspergen et al 1998;Bilanovic et al 1999;Cherchi et al 2009;Clifford and Liu 1993;Fernandez-Nava et al 2010;Foglar et al 2005;Her and Huang 1995;Rajapakse and Scutt 1999;Xu 1996) και το οξικό οξύ (An et al 2012;Aspergen et al 1998;Beristain-Cardoso et al 2008;Bilanovic et al 1999;Calderer et al 2010;Cherchi et al 2009;Chou et al 2003;Elefsiniotis and Li 2006;Her and Huang 1995;Li et al 2009;Moser-Engeler et al 1998;Oa et al 2006;Rodriquez et al 2007;Tugtas and Pavlostathis 2007;Wang et al 2007;Xu 1996). Η αιθανόλη παρουσιάζει κάποια πλεονεκτήματα έναντι της μεθανόλης.…”
Section: συγκέντρωση υδρογόνουunclassified