Glycerol-Driven Denitrification: Evaluating the Specialist-Generalist Theory and Partial Denitrification to Nitrite

Uprety, Kshitiz; Bott, Charles; Burbage, Chris; Parker, Kevin J.; Balzer, Bill; Bilyk, Katya; Latimer, Ron

doi:10.2175/193864712811708310

Cited by 3 publications

(3 citation statements)

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“…The glycerol PdN efficiency was consistent with previous studies, 21,26,34–38 showing the reproducibility of the PdNA process. The methanol PdN efficiency obtained in this study was higher than the PdN efficiency obtained in the methanol-fed full-scale PdNA filter owing to the higher loading rates in this study (450 g NO 3 − -N m −3 d −1 vs. 110 g NO 3 − -N m −3 d −1 ).…”

Section: Resultssupporting

confidence: 91%

“…21 The lower PdN efficiency in the methanol-fed filter was most likely attributed to the difference in electron competition mechanism 33 and lower rate differential between nitrate and nitrite reduction. 18 The glycerol PdN efficiency was consistent with previous studies, 21,26,[34][35][36][37][38] showing the reproducibility of the PdNA process. The methanol PdN efficiency obtained in this study was higher than the PdN efficiency obtained in the methanol-fed full-scale PdNA filter owing to the higher loading rates in this study (450 g NO 3…”

Section: Impact Of Carbon Source Onsupporting

confidence: 89%

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Robustness of partial denitrification-anammox (PdNA) in filters with methanol and glycerol as carbon sources

Fofana

Parsons

Bachmann

et al. 2023

Environ. Sci.: Water Res. Technol.

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Section: Resultssupporting

confidence: 91%

Section: Impact Of Carbon Source Onsupporting

confidence: 89%

Robustness of partial denitrification-anammox (PdNA) in filters with methanol and glycerol as carbon sources

Fofana

Parsons

Bachmann

et al. 2023

Environ. Sci.: Water Res. Technol.

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“…Bench scale denitrification tests using glycerin as a carbon source have reported 1) nitrite accumulation (Onnis-Hayden, 2011;Uprety, 2012;Bilyk, 2012) and 2) glycerin-COD storage and increasing SDNR and/or COD:N requirements over time (Bilyk, 2011, Uprety, 2012 perhaps due to the development of specialized populations or adaptation of enzymatic activities based on the environment the microbial community is exposed to.…”

Section: Introductionmentioning

confidence: 99%

The Fate of Glycerin in BNR, A Closer Look at Nitrite Accumulation and Glycerin Specialists

Ledwell¹,

Togna²,

Andalib³

et al. 2013

proc water environ fed

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Alkalinity and external carbon requirements for denitrification-nitrification of coke wastewater

Raper

Fisher

Anderson

et al. 2018

Environmental Technology

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The Industrial Emissions Directive requires that coke wastewater is treated to reach an effluent with < 50 mg/L total nitrogen (TN). A shortage of alkalinity (3.6 mg as CaCO/mg [Formula: see text]) in the wastewater limited nitrification to 45%. Various compounds were tested as a source of additional alkalinity, with optimal results being found for sodium carbonate, which enabled 95% nitrification at 300 mg/L (as CaCO). Sodium bicarbonate led to incomplete ammonia oxidation (76%) whilst soda ash prevented nitrite oxidation. Addition of sodium hydroxide enabled 98% nitrification but was associated with [Formula: see text] accumulation. Ammonia and nitrite oxidation had optimal pH ranges of 7.0-8.3 and 5.5-6.8, respectively. As organic carbon concentrations in coke wastewater are at times insufficient for effective denitrification external organic carbon was also considered to enhance denitrification. A laboratory-scale anoxic-aerobic activated sludge process was used to investigate glycerol and acetic acid as carbon sources. Glycerol was associated with a low biomass production (0.18 mg of biomass produced per 1 mg of glycerol) and mixed liquor suspended solids (MLSS) declined from 2235 to 750 mg/L leading to incomplete nitrification (< 30%) and an effluent TN of 59 mg/L. Acetic acid had a higher biomass production (0.31 mg of biomass produced per 1 mg of acetic acid) maintaining stable MLSS concentrations (3137 mg/L). Overall, a denitrification-nitrification process with alkalinity (NaCO at 300 mg/L) and acetic acid dosing enabled an effluent TN of 24 mg/L.

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Glycerol-Driven Denitrification: Evaluating the Specialist-Generalist Theory and Partial Denitrification to Nitrite

Cited by 3 publications

References 0 publications

Robustness of partial denitrification-anammox (PdNA) in filters with methanol and glycerol as carbon sources

Robustness of partial denitrification-anammox (PdNA) in filters with methanol and glycerol as carbon sources

The Fate of Glycerin in BNR, A Closer Look at Nitrite Accumulation and Glycerin Specialists

Alkalinity and external carbon requirements for denitrification-nitrification of coke wastewater

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