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Güneş G, Hallaç E, Özgan M, Ertürk A, Okutman Taş D, Çokgor E, Güven D, Takacs I, Erdinçler A, Insel G. Enhancement of nutrient removal performance of activated sludge with a novel hybrid biofilm process. Bioprocess Biosyst Eng 2018; 42:379-390. [DOI: 10.1007/s00449-018-2042-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2018] [Accepted: 11/09/2018] [Indexed: 10/27/2022]
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Güven D, Hanhan O, Aksoy EC, Insel G, Çokgör E. Impact of paint shop decanter effluents on biological treatability of automotive industry wastewater. JOURNAL OF HAZARDOUS MATERIALS 2017; 330:61-67. [PMID: 28212510 DOI: 10.1016/j.jhazmat.2017.01.048] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/18/2016] [Revised: 01/24/2017] [Accepted: 01/25/2017] [Indexed: 06/06/2023]
Abstract
A lab-scale Sequencing Batch Reactor (SBR) was implemented to investigate biological treatability and kinetic characteristics of paint shop wastewater (PSW) together with main stream wastewater (MSW) of a bus production factory. Readily biodegradable and slowly biodegradable COD fractions of MWS were determined by respirometric analysis: 4.2% (SS), 10.4% (SH) and 59.3% (XS). Carbon and nitrogen removal performance of the SBR feeding with MSW alone were obtained as 89% and 58%, respectively. When PSW was introduced to MSW, both carbon and nitrogen removal were deteriorated. Model simulation indicated that maximum heterotrophic growth rate decreased from 7.2 to 5.7day-1, maximum hydrolysis rates were reduced from 6 to 4day-1 (khS) and 4 to 1day-1 (khX). Based on the dynamic model simulation for the evaluation of nitrogen removal, a maximum specific nitrifier growth rate was obtained as 0.45day-1 for MSW feeding alone. When PSW was introduced, nitrification was completely inhibited and following the termination of PSW addition, nitrogen removal performance was recovered in about 100 days, however with a much lower nitrifier growth rate (0.1day-1), possibly due to accumulation of toxic compounds in the sludge. Obviously, a longer recovery period is required to ensure an active nitrifier community.
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Affiliation(s)
- Didem Güven
- Istanbul Technical University, Applied Biopolymer and Bioplastics Production Technologies Research Center, 34469, Maslak, Istanbul, Turkey.
| | - Oytun Hanhan
- Daimler Buses EvoBus GmbH, Carl-Zeiss-Str. 2, 89231 Neu-Ulm, Germany.
| | | | - Güçlü Insel
- Istanbul Technical University, Environmental Engineering Department, 34469, Maslak, Istanbul, Turkey.
| | - Emine Çokgör
- Istanbul Technical University, Environmental Engineering Department, 34469, Maslak, Istanbul, Turkey.
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Güven D, Ubay Çokgör E, Sözen S, Orhon D. Kinetic evaluation of nitrification performance in an immobilized cell membrane bioreactor. WATER SCIENCE AND TECHNOLOGY : A JOURNAL OF THE INTERNATIONAL ASSOCIATION ON WATER POLLUTION RESEARCH 2016; 73:2904-2912. [PMID: 27332835 DOI: 10.2166/wst.2016.141] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
High rate membrane bioreactor (MBR) systems operated at extremely low sludge ages (superfast membrane bioreactors (SFMBRs)) are inefficient to achieve nitrogen removal, due to insufficient retention time for nitrifiers. Moreover, frequent chemical cleaning is required due to high biomass flux. This study aims to satisfy the nitrification in SFMBRs by using sponge as carriers, leading to the extension of the residence time of microorganisms. In order to test the limits of nitrification, bioreactor was run under 52, 5 and 2 days of carrier residence time (CRT), with a hydraulic retention time of 6 h. Different degrees of nitrification were obtained for different CRTs. Sponge immobilized SFMBR operation with short CRT resulted in partial nitrification indicating selective dominancy of ammonia oxidizers. At higher CRT, simultaneous nitrification-denitrification was achieved when accompanying with oxygen limitation. Process kinetics was determined through evaluation of the results by a modeling study. Nitrifier partition in the reactor was also identified by model calibration.
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Affiliation(s)
- D Güven
- Environmental Engineering Department, Fatih University, Buyukcekmece 34500, Istanbul, Turkey E-mail: ;
| | - E Ubay Çokgör
- Environmental Engineering Department, Istanbul Technical University, Maslak 34469, Istanbul, Turkey
| | - S Sözen
- Environmental Engineering Department, Istanbul Technical University, Maslak 34469, Istanbul, Turkey
| | - D Orhon
- ENVIS Energy and Environmental Systems Research & Development Ltd, Istanbul Technical University Technopark ARI 1, Maslak 34469, Istanbul, Turkey
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Papp B, Török T, Sándor E, Fekete E, Flipphi M, Karaffa L. High cell density cultivation of the chemolithoautotrophic bacterium Nitrosomonas europaea. Folia Microbiol (Praha) 2015; 61:191-8. [PMID: 26358065 DOI: 10.1007/s12223-015-0425-8] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2015] [Accepted: 09/02/2015] [Indexed: 01/13/2023]
Abstract
Nitrosomonas europaea is a chemolithoautotrophic nitrifier, a gram-negative bacterium that can obtain all energy required for growth from the oxidation of ammonia to nitrite, and this may be beneficial for various biotechnological and environmental applications. However, compared to other bacteria, growth of ammonia oxidizing bacteria is very slow. A prerequisite to produce high cell density N. europaea cultures is to minimize the concentrations of inhibitory metabolic by-products. During growth on ammonia nitrite accumulates, as a consequence, N. europaea cannot grow to high cell concentrations under conventional batch conditions. Here, we show that single-vessel dialysis membrane bioreactors can be used to obtain substantially increased N. europaea biomasses and substantially reduced nitrite levels in media initially containing high amounts of the substrate. Dialysis membrane bioreactor fermentations were run in batch as well as in continuous mode. Growth was monitored with cell concentration determinations, by assessing dry cell mass and by monitoring ammonium consumption as well as nitrite formation. In addition, metabolic activity was probed with in vivo acridine orange staining. Under continuous substrate feed, the maximal cell concentration (2.79 × 10(12)/L) and maximal dry cell mass (0.895 g/L) achieved more than doubled the highest values reported for N. europaea cultivations to date.
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Affiliation(s)
- Benedek Papp
- Department of Biochemical Engineering, Faculty of Science and Technology, University of Debrecen, H-4032, Egyetem tér 1, Debrecen, Hungary
| | - Tibor Török
- Safety and Environmental Department, TEVA Pharmaceutical Ltd., H-4032, Pallagi u. 13, Debrecen, Hungary
| | - Erzsébet Sándor
- Institute of Food Science, Faculty of Agricultural and Food Sciences and Environmental Management, University of Debrecen, H-4032, Böszörményi út 138, Debrecen, Hungary
| | - Erzsébet Fekete
- Department of Biochemical Engineering, Faculty of Science and Technology, University of Debrecen, H-4032, Egyetem tér 1, Debrecen, Hungary
| | - Michel Flipphi
- Department of Biochemical Engineering, Faculty of Science and Technology, University of Debrecen, H-4032, Egyetem tér 1, Debrecen, Hungary
| | - Levente Karaffa
- Department of Biochemical Engineering, Faculty of Science and Technology, University of Debrecen, H-4032, Egyetem tér 1, Debrecen, Hungary.
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yingling B, zhengfang Y. Application of an integrated statistical design for optimization of culture condition for ammonium removal by Nitrosomonas europaea. PLoS One 2013; 8:e60322. [PMID: 23565225 PMCID: PMC3614901 DOI: 10.1371/journal.pone.0060322] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2012] [Accepted: 02/25/2013] [Indexed: 11/19/2022] Open
Abstract
Statistical methodology was applied to the optimization of the ammonium oxidation by Nitrosomonas europaea for biomass concentration (CB), nitrite yield (YN) and ammonium removal (RA). Initial screening by Plackett-Burman design was performed to select major variables out of nineteen factors, among which NH4Cl concentration (CN), trace element solution (TES), agitation speed (AS), and fermentation time (T) were found to have significant effects. Path of steepest ascent and response surface methodology was applied to optimize the levels of the selected factors. Finally, multi-objective optimization was used to obtain optimal condition by compromise of the three desirable objectives through a combination of weighted coefficient method coupled with entropy measurement methodology. These models enabled us to identify the optimum operation conditions (CN = 84.1 mM; TES = 0.74 ml; AS = 100 rpm and T = 78 h), under which CB = 3.386×108 cells/ml; YN = 1.98 mg/mg and RA = 97.76% were simultaneously obtained. The optimized conditions were shown to be feasible through verification tests.
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Affiliation(s)
- Bao yingling
- Department of Environmental Engineering, Peking University, The Key Laboratory of Water and Sediment Sciences, Ministry of Education, Beijing, China
| | - Ye zhengfang
- Department of Environmental Engineering, Peking University, The Key Laboratory of Water and Sediment Sciences, Ministry of Education, Beijing, China
- * E-mail:
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Farges B, Poughon L, Roriz D, Creuly C, Dussap CG, Lasseur C. Axenic Cultures of Nitrosomonas europaea and Nitrobacter winogradskyi in Autotrophic Conditions: a New Protocol for Kinetic Studies. Appl Biochem Biotechnol 2012; 167:1076-91. [DOI: 10.1007/s12010-012-9651-6] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2011] [Accepted: 03/09/2012] [Indexed: 11/28/2022]
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