The Experts below are selected from a list of 62751 Experts worldwide ranked by ideXlab platform
Reinhard Renneberg - One of the best experts on this subject based on the ideXlab platform.
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biosensor for rapid phosphate monitoring in a Sequencing Batch Reactor sbr system
Biosensors and Bioelectronics, 2003Co-Authors: Chiyui Chan, John P. Barford, Reinhard RennebergAbstract:A thick-film phosphate biosensor based on hydrogel immobilized pyruvate oxidase (POD) has been developed for rapid phosphate process control monitoring in an experimental Sequencing Batch Reactor (SBR) system. We have employed a phosphate biosensor in an off-line monitoring of phosphate concentrations in a bench scale SBR. Measurements with biosensor show a good correlation (r 2 /0.98) with those of commercial colorimetric phosphate testing kits. The signal response time was 1 min with a detection limit of 5 mM. The biosensor method showed a good operational stability, needed less experimental procedures and a small sample size (� /20 ml). This allows its practical application for rapid phosphate measurements to obtain real time process data in a SBR system. # 2003 Elsevier B.V. All rights reserved.
Chiuyue Lin - One of the best experts on this subject based on the ideXlab platform.
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hydrogen production from sucrose using an anaerobic Sequencing Batch Reactor process
Journal of Chemical Technology & Biotechnology, 2003Co-Authors: Chiuyue LinAbstract:Studies on hydrogen production in an anaerobic Sequencing Batch Reactor (AnSBR) indicated that the anaerobic acidogenic conversion of sucrose could produce hydrogen. The hydrogen production of acclimated sewage sludge depended on hydraulic retention time (HRT) and reaction period/settling period (R/S) ratio. A short equivalent HRT, even up to 4 h, gave good hydrogen productivity and high hydrogen production rate (HPR) values. For each equivalent HRT, R/S ratio control also increased the hydrogen productivity and HPR. Reactor operation at an intimate control of HRT and R/S ratio was preferable for hydrogen production. At HRT 8 h, R/S ratio 5.6 and an organic loading rate of 0.23 mol-sucrose dm−3 day−1, each mole of sucrose in the mesophilic hydrogenic Reactor yielded 2.6 mole of hydrogen; each gram of biomass produced 0.069 mole of hydrogen per day. Copyright © 2003 Society of Chemical Industry
Chiyui Chan - One of the best experts on this subject based on the ideXlab platform.
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biosensor for rapid phosphate monitoring in a Sequencing Batch Reactor sbr system
Biosensors and Bioelectronics, 2003Co-Authors: Chiyui Chan, John P. Barford, Reinhard RennebergAbstract:A thick-film phosphate biosensor based on hydrogel immobilized pyruvate oxidase (POD) has been developed for rapid phosphate process control monitoring in an experimental Sequencing Batch Reactor (SBR) system. We have employed a phosphate biosensor in an off-line monitoring of phosphate concentrations in a bench scale SBR. Measurements with biosensor show a good correlation (r 2 /0.98) with those of commercial colorimetric phosphate testing kits. The signal response time was 1 min with a detection limit of 5 mM. The biosensor method showed a good operational stability, needed less experimental procedures and a small sample size (� /20 ml). This allows its practical application for rapid phosphate measurements to obtain real time process data in a SBR system. # 2003 Elsevier B.V. All rights reserved.
Huub Op Den J M Camp - One of the best experts on this subject based on the ideXlab platform.
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interactions between anaerobic ammonium and methane oxidizing microorganisms in a laboratory scale Sequencing Batch Reactor
Applied Microbiology and Biotechnology, 2019Co-Authors: Karin Stultiens, Simon Guerrero Cruz, Maartje A H J Van Kessel, Mike S M Jetten, Boran Kartal, Huub Op Den J M CampAbstract:The reject water of anaerobic digestors still contains high levels of methane and ammonium that need to be treated before these effluents can be discharged to surface waters. Simultaneous anaerobic methane and ammonium oxidation performed by nitrate/nitrite-dependent anaerobic methane-oxidizing(N-damo) microorganisms and anaerobic ammonium-oxidizing(anammox) bacteria is considered a potential solution to this challenge. Here, a stable coculture of N-damo archaea, N-damo bacteria, and anammox bacteria was obtained in a Sequencing Batch Reactor fed with methane, ammonium, and nitrite. Nitrite and ammonium removal rates of up to 455 mg N-NO2- L-1 day-1 and 228 mg N-NH4+ L-1 were reached. All nitrate produced by anammox bacteria (57 mg N-NO3- L-1 day-1) was consumed, leading to a nitrogen removal efficiency of 97.5%. In the nitrite and ammonium limited state, N-damo and anammox bacteria each constituted about 30-40% of the culture and were separated as granules and flocs in later stages of the Reactor operation. The N-damo archaea increased up to 20% and mainly resided in the granular biomass with their N-damo bacterial counterparts. About 70% of the nitrite in the Reactor was removed via the anammox process, and Batch assays confirmed that anammox activity in the Reactor was close to its maximal potential activity. In contrast, activity of N-damo bacteria was much higher in Batch, indicating that these bacteria were performing suboptimally in the Sequencing Batch Reactor, and would probably be outcompeted by anammox bacteria if ammonium was supplied in excess. Together these results indicate that the combination of N-damo and anammox can be implemented for the removal of methane at the expense of nitrite and nitrate in future wastewater treatment systems.
Ahmet Uygur - One of the best experts on this subject based on the ideXlab platform.
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specific nutrient removal rates in saline wastewater treatment using Sequencing Batch Reactor
Process Biochemistry, 2006Co-Authors: Ahmet UygurAbstract:Abstract Effects of salt concentration (0–6%, w/v) on specific nutrient removal rates from saline wastewater in a Sequencing Batch Reactor (SBR) were investigated. The Sequencing Batch operation consisted of anaerobic, oxic, anoxic and oxic phases with hydraulic residence times (HRT) of 1/3/1/1 h and a settling phase of 3/4 h. Solids retention time (SRT) was kept constant at 10 days in all experiments. Specific nutrient (COD, NH 4 -N and PO 4 -P) removal rates decreased with increasing salt concentration due to adverse effects of salt on microorganisms. A salt tolerant organism, Halobacter halobium was added to the activated sludge culture (1/1, v/v) in order to improve the nutrient removal performance of the SBR. Nutrient removal performances of Halobacter -free and Halobacter -added activated sludge cultures were compared for all salt contents tested. Specific rates of nutrient removal obtained with the Halobacter -added culture were higher that those of Halobacter -free activated sludge, especially at high salt contents.
