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Author Bonassa, G.; Bolsan, A.C.; Hollas, C.E.; Venturin, B.; Candido, D.; Chini, A.; De Pra, M.C.; Antes, F.G.; Campos, J.L.; Kunz, A.
Title Organic carbon bioavailability: Is it a good driver to choose the best biological nitrogen removal process? Type
Year 2021 Publication Science Of The Total Environment Abbreviated Journal Sci. Total Environ.
Volume 786 Issue Pages 147390
Keywords Economic viability; Anammox-based process; Biodegradable organic carbon concentration; Nitrogen removal process; Nitrification; denitrification
Abstract Organic carbon can affect the biological nitrogen removal process since the Anammox, heterotrophic and denitrifying bacteria have different affinities and feedback in relation to carbon/nitrogen ratio. Therefore, we reviewed the wastewater carbon concentration, its biodegradability and bioavailability to choose the appropriate nitrogen removal process between conventional (nitrification-denitrification) and Anammox-based process (i.e. integrated with the partial nitritation, nitritation, simultaneous partial nitrification and denitrification or partial-denitrification). This review will cover: (i) strategies to choose the best nitrogen removal route according to the wastewater characteristics in relation to the organic matter bioavailability and biodegradability; (ii) strategies to efficiently remove nitrogen and the remaining carbon from effluent in anammox-based process and its operating cost; (iii) an economic analysis to determine the operational costs of two-units Anammox-based process when compared with the commonly applied one-unit Anammox system (partial-nitritation-Anammox). On this re-view, a list of alternatives are summarized and explained for different nitrogen and biodegradable organic carbon concentrations, which are the main factors to determine the best treatment process, based on operational and economic terms. In summary, it depends on the wastewater carbon biodegradability, which implies in the wastewater treatment cost. Thus, to apply the conventional nitrification/denitrification process a CODb/N ratio higher than 3.5 is required to achieve full nitrogen removal efficiency. For an economic point of view, according to the analysis the minimum CODb/gN for successful nitrogen removal by nitrification/denitrification is 5.8 g. If ratios lower than 3.5 are applied, for successfully higher nitrogen removal rates and the economic feasibility of the treatment, Anammox-based routes can be applied to the wastewater treatment plant.
Address
Corporate Author Thesis
Publisher Place of Publication Editor
Language Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 0048-9697 ISBN Medium
Area Expedition Conference
Notes WOS:000687095700013 Approved
Call Number UAI @ alexi.delcanto @ Serial 1459
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Author Campos, J.L.; del Rio, A.V.; Pedrouso, A.; Raux, P.; Giustinianovich, E.A.; Mosquera-Corral, A.
Title Granular biomass floatation: A simple kinetic/stoichiometric explanation Type
Year 2017 Publication Chemical Engineering Journal Abbreviated Journal Chem. Eng. J.
Volume 311 Issue Pages 63-71
Keywords Anaerobic; Anammox; Denitrification; Granule; Methane; Nitrogen
Abstract Floatation events are commonly observed in anammox, denitrifying and anaerobic granular systems mostly subjected to overloading conditions. Although several operational strategies have been proposed to avoid floatation of granular biomass, until now, there is no consensus about the conditions responsible for this phenomenon. In the present study, a simple explanation based on kinetic and stoichiometric principles defining the aforementioned processes is provided. The operational zones corresponding to evaluated parameters where risk of floatation exists are defined as a function of substrate concentration in the bulk liquid and the radius of the granule. Moreover, the possible control of biomass floatation by changing the operating temperature was analyzed. Defined operational zones and profiles fit data reported in literature for granular biomass floatation events. From the study the most influencing parameter on floatation occurrence has been identified as the substrate concentration in the bulk media. (C) 2016 Elsevier B.V. All rights reserved.
Address [Campos, J. L.; Raux, P.] Univ Adolfo Ibanez, Fac Ingn & Ciencias, Avda Padre Hurtado 750, Vina Del Mar, Chile, Email: jluis.campos@uai.cl
Corporate Author Thesis
Publisher Elsevier Science Sa Place of Publication Editor
Language English Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 1385-8947 ISBN Medium
Area Expedition Conference
Notes WOS:000392768200008 Approved
Call Number UAI @ eduardo.moreno @ Serial 697
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Author del Rio, A.V.; Buys, B.; Campos, J.L.; Mendez, R.; Mosquera-Corral, A.
Title Optimizing upflow velocity and calcium precipitation in denitrifying granular systems Type
Year 2015 Publication Process Biochemistry Abbreviated Journal Process Biochem.
Volume 50 Issue 10 Pages 1656-1661
Keywords Calcium; Denitrification; Granule; Upflow velocity
Abstract The denitrification process was studied in two granular biomass denitrifying reactors (USB1 and USB2). In USB1 large quantities of biomass were accumulated (9.5 gVSS L-1) allowing for the treatment of high nitrogen loads (3.5 g NO3--N L-1 d(-1)). As the biomass granulation process is not immediate the effects of different upflow velocities (0.12-5.5 m h(-1)) and calcium contents (5-200 mg Ca2+ L-1) were studied in order to speed up the process. Obtained results indicate that the optimum values for these parameters, which allow for the stable operation of USB1, are of 0.19 m h(-1) and 60 mg Ca2+ L-1. Then these optimum conditions were applied to USB2 where the effects of concentrations from 335 to 1000 mg NO3--N L-1 were tested. In these conditions nitrate concentrations of 1000 mg NO3--N L-1 are required for denitrifying granular biomass formation. Summarizing denitrifying granules can be formed at low upflow velocities and in hard or extremely hard water composition conditions if sufficient high nitrogen loads are treated. (C) 2015 Elsevier Ltd. All rights reserved.
Address [Val del Rio, A.; Buys, B.; Campos, J. L.; Mendez, R.; Mosquera-Corral, A.] Univ Santiago de Compostela, Inst Technol, Dept Chem Engn, Santiago De Compostela 15782, Galicia, Spain, Email: mangeles.val@usc.es;
Corporate Author Thesis
Publisher Elsevier Sci Ltd Place of Publication Editor
Language English Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 1359-5113 ISBN Medium
Area Expedition Conference
Notes WOS:000361775400022 Approved
Call Number UAI @ eduardo.moreno @ Serial 526
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Author del Rio, A.V.; Pichel, A.; Fernandez-Gonzalez, N.; Pedrouso, A.; Fra-Vazquez, A.; Morales, N.; Mendez, R.; Campos, J.L.; Mosquera-Corral, A.
Title Performance and microbial features of the partial nitritation-anammox process treating fish canning wastewater with variable salt concentrations Type
Year 2018 Publication Journal Of Environmental Management Abbreviated Journal J. Environ. Manage.
Volume 208 Issue Pages 112-121
Keywords Autotrophic; Denitrification; Fish canning; Granule; Nitrogen
Abstract The partial nitritation-anammox (PN-AMX) process applied to wastewaters with high NaCl concentration was studied until now using simulated media, without considering the effect of organic matter concentration and the shift in microbial populations. This research work presents results on the application of this process to the treatment of saline industrial wastewater. Obtained results indicated that the PN-AMX process has the capability to recover its initial activity after a sudden/acute salt inhibition event (up to 16 g NaCl/L). With a progressive salt concentration increase for 150 days, the PN-AMX process was able to remove the 80% of the nitrogen at 7-9 g NaCl/L. The microbiological data indicated that NaCl and ammonia concentrations and temperature are important factors shaping PN-AMX communities. Thus, the NOB abundance (Nitrospira) decreases with the increase of the salt concentration, while heterotrophic denitrifiers are able to outcompete anammox aftet a peak of organic matter in the feeding. (C) 2017 Elsevier Ltd. All rights reserved.
Address [Val del Rio, Angeles; Pichel, Andres; Fernandez-Gonzalez, Nuria; Pedrouso, Alba; Fra-Vazquez, Andrea; Mendez, Ramon; Mosquera-Corral, Anuska] Univ Santiago de Compostela, Sch Engn, Dept Chem Engn, E-15705 Santiago De Compostela, Spain, Email: mangeles.val@usc.es;
Corporate Author Thesis
Publisher Academic Press Ltd- Elsevier Science Ltd Place of Publication Editor
Language English Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 0301-4797 ISBN Medium
Area Expedition Conference
Notes WOS:000424074000011 Approved
Call Number UAI @ eduardo.moreno @ Serial 818
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Author Giustinianovich, E.A.; Campos, J.L.; Roeckel, M.D.
Title The presence of organic matter during autotrophic nitrogen removal: Problem or opportunity? Type
Year 2016 Publication Separation And Purification Technology Abbreviated Journal Sep. Purif. Technol.
Volume 166 Issue Pages 102-108
Keywords Anammox; Ammonia oxidation; Heterotrophic denitrification; Nitrogen removal; SNAD
Abstract The simultaneous nitrification, Anammox and denitrification (SNAD) process discovered six years ago is an adaptation of the autotrophic denitrification process that allows for treating nitrogen-rich wastewater streams with moderate amounts of organic carbon. Several authors have noted that it is possible to utilize organic carbon to promote nitrogen removal via the action of denitrifying microorganisms, which can remove the remnant nitrate produced by Anammox bacteria. Thus, SNAD systems can achieve nitrogen removal efficiencies higher than 89%, which is what is expected under autotrophic conditions. Three bacterial groups are responsible for SNAD reactions: ammonium-oxidizing bacteria (AOB), anaerobic ammonium-oxidizing bacteria (AnAOB) and heterotrophic bacteria (HB). Because HB will compete with AOB and AnAOB for oxygen and nitrite, respectively, the system should be operated in such way that a balance among the different bacterial populations is achieved. Here, the results reported in the literature are analyzed to define suitable characteristics of effluents for treatment and operational conditions to allow the SNAD process to be carried out with different types of technologies. (C) 2016 Elsevier B.V. All rights reserved.
Address [Giustinianovich, Elisa A.; Roeckel, Marlene D.] Univ Concepcion, Dept Chem Engn, Casilla 160-C, Concepcion, Chile, Email: mroeckel@udec.cl
Corporate Author Thesis
Publisher Elsevier Science Bv Place of Publication Editor
Language English Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 1383-5866 ISBN Medium
Area Expedition Conference
Notes WOS:000376834400013 Approved
Call Number UAI @ eduardo.moreno @ Serial 827
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Author Ortega-Martinez, E.; Toledo-Alarcon, J.; Fernandez, E.; Campos, J.L.; Oyarzun, R.; Etchebehere, C.; Cardena, R.; Cabezas, A.; Koók, L.; Bakonyi, P.
Title A review of autotrophic denitrification for groundwater remediation: A special focus on bioelectrochemical reactors Type
Year 2024 Publication Journal of Environmental Chemical Engineering Abbreviated Journal J. Environ. Chem. Eng.
Volume 12 Issue 1 Pages 111552
Keywords Autotrophic denitrification; Bioremediation; Bioelectrochemical systems; Investment costs; Groundwater recuperation; Microbial community
Abstract Groundwater is an important resource that can help in climate change adaptation. However, the pollution of these aquifers with nitrate is a widespread problem of growing concern. Biological denitrification using inorganic electron donors shows significant advantages in treating nitrate-polluted groundwater where organic matter presence is negligible. However, mass transfer limitations and secondary contamination seem to be the major hinderance to spread the use of these technologies. This could be solved by the use of bioelectrochemical systems (BES), which emerge as an attractive technology to solve these problems due to the reported low energy demand and high denitrification rates. However, technical and operational issues must be considered to replicate these results at full-scale. This review summarizes the biological basis of autotrophic denitrification and the key aspects of its application in bioelectrochemical systems. In addition, an estimation of the capital costs required for the implementation of a BES considering different population sizes and initial nitrate concentration in the ground-water is made.
Address
Corporate Author Thesis
Publisher Place of Publication Editor
Language Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 2213-2929 ISBN Medium
Area Expedition Conference
Notes WOS:001140225000001 Approved
Call Number UAI @ alexi.delcanto @ Serial 1948
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Author Pichel, A.; Fra, A.; Morales, N.; Campos, J.L.; Mendez, R.; Mosquera-Corral, A.; del Rio, A.V.
Title Is the ammonia stripping pre-treatment suitable for the nitrogen removal via partial nitritation-anammox of OFMSW digestate? Type
Year 2021 Publication JOURNAL OF HAZARDOUS MATERIALS Abbreviated Journal J. Hazard. Mater.
Volume 403 Issue Pages 123458
Keywords Ammonia stripping; Anammox; COD/N ratio; Heterotrophic denitrification; OFMSW
Abstract Treating the organic fraction of municipal solid waste (OFMSW) can be performed by coupling the anaerobic digestion (AD) and partial nitritation-anammox (PN-AMX) processes for organic matter and nitrogen removal, respectively. Besides, an ammonia stripping (AS) step before the AD benefit the removal of organic matter. In the present study, the operation of two PN-AMX sequencing batch reactors with and without AS pre-treated OFMSW digestate (AS-SBR and nAS-SBR, respectively) was assessed. The specific anammox activity decreased by 90 % for increasing proportions of fed OFMSW in both cases, indicating no differences over the anammox activity whether the AS pre-treatment is implemented or not. For 100 % OFMSW proportion, the AS-SBR achieved better effluent quality than the nAS-SBR (127 +/- 88 vs. 1050 +/- 23 mg N/L) but with lower nitrogen removal rates (58 +/- 8 vs. 687 +/- 32 g N/(L.d)). Still, the latter required successive re-inoculations to obtain higher removal rates. Changes in the microbial communities were mainly correlated to sCOD/N ratios in the OFMSW, being Candidatus Brocadia the dominant anamnmox species. The results proved the AS to be a suitable pre-treatment, despite the higher sCOD/N ratios in the OFMSW digestate, achieving good synergy between the PN-AMX and heterotrophic denitrification processes.
Address
Corporate Author Thesis
Publisher Place of Publication Editor
Language Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 0304-3894 ISBN Medium
Area Expedition Conference
Notes WOS:000595265500001 Approved
Call Number UAI @ alexi.delcanto @ Serial 1274
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Author Read-Daily, B.L.; Sabba, F.; Pavissich, J.P.; Nerenberg, R.
Title Kinetics of nitrous oxide (N2O) formation and reduction by Paracoccus pantotrophus Type
Year 2016 Publication Amb Express Abbreviated Journal AMB Express
Volume 6 Issue Pages 7 pp
Keywords Paracoccus pantotrophus; Nitrous oxide; Denitrification; Maximum specific reduction rates; Kinetics
Abstract Nitrous oxide (N2O) is a powerful greenhouse gas emitted from wastewater treatment, as well as natural systems, as a result of biological nitrification and denitrification. While denitrifying bacteria can be a significant source of N2O, they can also reduce N2O to N-2. More information on the kinetics of N2O formation and reduction by denitrifying bacteria is needed to predict and quantify their impact on N2O emissions. In this study, kinetic parameters were determined for Paracoccus pantotrophus, a common denitrifying bacterium. Parameters included the maximum specific reduction rates, (q) over cap, growth rates, (mu) over cap, and yields, Y, for reduction of NO3- (nitrate) to nitrite (N2O-), N2O- to N2O, and N2O to N-2, with acetate as the electron donor. The (q) over cap values were 2.9 gN gCOD(-1) d(-1) for NNO3- to NO2-, 1.4 gN gCOD(-1) d(-1) for N2O-to N2O, and 5.3 gN gCOD(-1) d(-1) for N2O to N-2. The (mu) over cap values were 2.7, 0.93, and 1.5 d(-1), respectively. When N2O and NO3- were added concurrently, the apparent (extant) kinetics, (q) over cap (app), assuming reduction to N-2, were 6.3 gCOD gCOD(-1) d(-1), compared to 5.4 gCOD gCOD(-1) d(-1) for NO3- as the sole added acceptor. The (mu) over cap (app) was 1.6 d(-1), compared to 2.5 d(-1) for NO3- alone. These results suggest that NO3- and N2O were reduced concurrently. Based on this research, denitrifying bacteria like P. pantotrophus may serve as a significant sink for N2O. With careful design and operation, treatment plants can use denitrifying bacteria to minimize N2O emissions.
Address [Read-Daily, B. L.] Elizabethtown Coll, Dept Engn & Phys, Elizabethtown, PA 17022 USA, Email: rnerenbe@nd.edu
Corporate Author Thesis
Publisher Biomed Central Ltd Place of Publication Editor
Language English Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 2191-0855 ISBN Medium
Area Expedition Conference
Notes WOS:000384497400004 Approved
Call Number UAI @ eduardo.moreno @ Serial 661
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Author Walker, P.; Nerenberg, R.; Pizarro, G.; Aybar, M.; Pavissich, J.P.; González, B.; Pastén, P.
Title Nitrate increases the capacity of an aerobic moving-bed biofilm reactor (MBBR) for winery wastewater treatment Type
Year 2024 Publication Water Science And Technology Abbreviated Journal Water Sci. Technol.
Volume Early Access Issue Pages
Keywords biofilms; BOD removal; denitrification; kinetics; modeling
Abstract We used bench-scale tests and mathematical modeling to explore chemical oxygen demand (COD) removal rates in a moving-bed biofilm reactor (MBBR) for winery wastewater treatment, using either urea or nitrate as a nitrogen source. With urea addition, the COD removal fluxes ranged from 34 to 45 gCOD/m(2)-d. However, when nitrate was added, fluxes increased up to 65 gCOD/m(2)-d, twice the amount reported for aerobic biofilms for winery wastewater treatment. A one-dimensional biofilm model, calibrated with data from respirometric tests, accurately captured the experimental results. Both experimental and modelling results suggest that nitrate significantly increased MBBR capacity by stimulating COD oxidation in the deeper, oxygen-limited regions of the biofilm. Our research suggests that the addition of nitrate, or other energetic and broadly used electron acceptors, may provide a cost-effective means of covering peak COD loads in biofilm processes for winery or another industrial wastewater treatment.
Address
Corporate Author Thesis
Publisher Place of Publication Editor
Language Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 0273-1223 ISBN Medium
Area Expedition Conference
Notes WOS:001172605000001 Approved
Call Number UAI @ alexi.delcanto @ Serial 1957
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