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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Nielsen, Ulla Gro
University of Southern Denmark
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (25/25 displayed)
- 2023The effects of low oxidation-reduction potential on the performance of full-scale hybrid membrane-aerated biofilm reactorscitations
- 2021Synthesis and Thermal Degradation of MAl4(OH)12SO4·3H2O with M = Co2+, Ni2+, Cu2+, and Zn2+citations
- 2021Synthesis and Thermal Degradation of MAl 4 (OH) 12 SO 4 ·3H 2 O with M = Co 2+ , Ni 2+ , Cu 2+ , and Zn 2+citations
- 2020The Effect of oxygen defects on the structural evolution of LiVPO4F1−yoy cathode materialscitations
- 2020Remarkable reversal of 13 C-NMR assignment in d 1 , d 2 compared to d 8 , d 9 acetylacetonate complexes:Analysis and explanation based on solid-state MAS NMR and computationscitations
- 2020Remarkable reversal of 13C-NMR assignment in d1, d2 compared to d8, d9 acetylacetonate complexescitations
- 2019Reactivity of magnesium borohydride – Metal hydride composites, γ-Mg(BH4)2-MHx, M = Li, Na, Mg, Cacitations
- 2019Reactivity of magnesium borohydride – Metal hydride composites, $mathrm{γ-Mg(BH_{4})_{2}-MH_{x}, M = Li, Na, Mg, Ca}$citations
- 2019Montmorillonite-surfactant hybrid particles for modulating intestinal P-glycoprotein-mediated transportcitations
- 2019Reactivity of magnesium borohydride – Metal hydride composites, γ-Mg(BH 4 ) 2 -MH x , M = Li, Na, Mg, Cacitations
- 2019Synthesis and Structural Characterization of a Pure ZnAl 4 (OH) 12 (SO 4 )·2.6H 2 O Layered Double Hydroxidecitations
- 2019Synthesis and Structural Characterization of a Pure ZnAl 4 (OH) 12 (SO 4 )·2.6H 2 O Layered Double Hydroxidecitations
- 2018Order in disorder:solution and solid-state studies of [MM] wheels (M = Cr, Al; M = Ni, Zn)citations
- 2018Order in disordercitations
- 2018In situ processing of fluorinated carbon—Lithium fluoride nanocompositescitations
- 2016The role of aluminium as an additive element in the synthesis of porous 4H-silicon carbidecitations
- 2016The role of aluminium as an additive element in the synthesis of porous 4H-silicon carbidecitations
- 2015How the Method of Synthesis Governs the Local and Global Structure of Zinc Aluminum Layered Double Hydroxidescitations
- 2015How the Method of Synthesis Governs the Local and Global Structure of Zinc Aluminum Layered Double Hydroxidescitations
- 2015The effect of preparation method on the proton conductivity of indium doped tin pyrophosphatescitations
- 2014The stoichiometry of synthetic alunite as a function of hydrothermal ageing investigated by solid-state NMR spectroscopy, powder X-ray diffraction, and infrared spectroscopycitations
- 2012Preparation of Nafion 117™-SnO 2 Composite Membranes using an Ion-Exchange Methodcitations
- 2012Preparation of Nafion 117™-SnO2 Composite Membranes using an Ion-Exchange Methodcitations
- 2010Preparation of Nafion 117™-SnO2 Composite Membranes using an Ion-Exchange Method
- 2010Fremstilling af Nafion 117™-SnO 2 kompositmembraner ved brug af en ionbytningsmetode ; Preparation of Nafion 117™-SnO 2 Composite Membranes using an Ion-Exchange Method
Places of action
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article
The effects of low oxidation-reduction potential on the performance of full-scale hybrid membrane-aerated biofilm reactors
Abstract
<p>Membrane-Aerated Biofilm Reactors (MABRs) are becoming a popular process intensification alternative within wastewater treatment plants (WWTP). Indeed, the nitrogen removal capacity of aerobic/anoxic/anaerobic reactors can be substantially enhanced with reduced energy consumption and footprint requirements. However, little is known about how oxidation–reduction potential (ORP) may impact their overall process performance. This study aims to report some of these effects by showing the results of almost three years of monitoring of two hybrid MABRs (R1, R2) adjacent to an existing Biodenipho™ facility. In Period 1 (P1), R1 and R2 were fed with anaerobic mixed liquor from the selector for the biological phosphorus removal zone. In Period 2 (P2), external aeration was introduced to increase ORP values (R1, R2), and membranes were replaced (R1) or cleaned (R2). Results show an increase in nitrification rates: from 0.27 and 0.33 g N m<sup>−2</sup> d<sup>−1</sup> in R1/R2 during P1 to 1.0 and 0.80 g N m<sup>−2</sup> d<sup>−1</sup> in R1/R2 during P2. 16 s rRNA amplicon sequencing analysis revealed that the relative abundance of nitrifying organisms increased from 0.2 to 6.7 % in R1 and 0.8 to 5.3 % in R2 in P2 (in detriment of microbes with fermenting capabilities). Energy dispersive X-ray spectroscopy confirmed the presence of coating substances under the lowest ORP (P1), which could be pyrite and its precursors like mackinawite. Overall, it is hypothesized that low ORP conditions (P1) had a detrimental effect on nitrification performance, as it promoted the reduction of different iron and sulfur compounds, which in turn a) precipitate in the biofilm as FeS increasing mass transfer limitations and competing with biomass for space; b) re-oxidize increasing the internal oxygen demand; c) inhibit nitrifiers growth.</p>