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Jarmatz N, Augustin W, Scholl S. Comprehensive Parameter Screening for the Investigation of Particulate Fouling in Pipe Fittings. CHEM-ING-TECH 2023. [DOI: 10.1002/cite.202200208] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/06/2023]
Affiliation(s)
- Niklas Jarmatz
- Technische Universität Braunschweig, Braunschweig Institute for Chemical and Thermal Process Engineering Langer Kamp 7 38106 Braunschweig Germany
| | - Wolfgang Augustin
- Technische Universität Braunschweig, Braunschweig Institute for Chemical and Thermal Process Engineering Langer Kamp 7 38106 Braunschweig Germany
| | - Stephan Scholl
- Technische Universität Braunschweig, Braunschweig Institute for Chemical and Thermal Process Engineering Langer Kamp 7 38106 Braunschweig Germany
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Moß C, Jarmatz N, Hartig D, Schnöing L, Scholl S, Schröder U. Studying the Impact of Wall Shear Stress on the Development and Performance of Electrochemically Active Biofilms. Chempluschem 2020; 85:2298-2307. [PMID: 32975878 DOI: 10.1002/cplu.202000544] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2020] [Revised: 09/03/2020] [Indexed: 11/06/2022]
Abstract
A laminar flow reactor was designed that provides constant and reproducible growth conditions for the bioelectrochemical observation of electroactive bacteria (EAB). Experiments were performed using four reactors in parallel to enable the comparison of EAB growth behavior and bioelectrochemical performance under different hydrodynamic conditions while simultaneously keeping biological conditions identical. With regard to the moderate flow conditions found in wastewater treatment applications, the wall shear stress was adjusted to a range between 0.4 mPa to 2.9 mPa. Chronoamperometric data indicate that early stage current densities are improved by a moderate increase of the wall shear stress. In the same way, current onset times were increasing slightly towards higher values of the applied wall shear stress. Long-term observations of EAB performance showed a decrease in current density and a leveling of the trend observed for the early stages of biofilm growth.
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Affiliation(s)
- Christopher Moß
- Institute of Environmental and Sustainable Chemistry, Technische Universität Braunschweig, Hagenring 30, 38106, Braunschweig, Germany
| | - Niklas Jarmatz
- Institute for Chemical and Thermal Process Engineering, Technische Universität Braunschweig, Langer Kamp 7, 38106, Braunschweig, Germany
| | - Dave Hartig
- Institute for Chemical and Thermal Process Engineering, Technische Universität Braunschweig, Langer Kamp 7, 38106, Braunschweig, Germany
| | - Lukas Schnöing
- Institute for Chemical and Thermal Process Engineering, Technische Universität Braunschweig, Langer Kamp 7, 38106, Braunschweig, Germany
| | - Stephan Scholl
- Institute for Chemical and Thermal Process Engineering, Technische Universität Braunschweig, Langer Kamp 7, 38106, Braunschweig, Germany
| | - Uwe Schröder
- Institute of Environmental and Sustainable Chemistry, Technische Universität Braunschweig, Hagenring 30, 38106, Braunschweig, Germany
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Moß C, Jarmatz N, Heinze J, Scholl S, Schröder U. Optimal Geometric Parameters for 3D Electrodes in Bioelectrochemical Systems: A Systematic Approach. ChemSusChem 2020; 13:5119-5129. [PMID: 32659033 PMCID: PMC7540030 DOI: 10.1002/cssc.202001232] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/15/2020] [Revised: 06/28/2020] [Indexed: 06/11/2023]
Abstract
In this study, the performance of electroactive bacteria (EAB), cultivated inside tubular electrode ducts, is systematically investigated to derive predictions on the behavior of EAB under conditions limited by electrochemical losses. A modeling approach is applied to assess the influence of the electrochemical losses on the electrochemical performance and scaling characteristics of complex 3D structures, such as sponges and foams. A modular flow reactor is designed that provides laminar and reproducible flow conditions as a platform for the systematic electrochemical and bioelectrochemical characterization of 3D electrodes in bioelectrochemical systems (BES). The bioelectrochemical experiments are carried out in a set of reactors incorporating cylindrical electrodes exhibiting ducts of 1 cm length and different diameters ranging from 0.1 cm up to 1 cm. Single duct calculations are extrapolated to three dimensions through geometrical considerations; trends in 3D bioanode performance are demonstrated using the resulting simplified 3D structure. The combined experimental and modeling approach constitutes a framework for future studies on systematic electrode design.
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Affiliation(s)
- Christopher Moß
- Institute of Environmental and Sustainable ChemistryTechnische Universität BraunschweigHagenring 3038106BraunschweigGermany
| | - Niklas Jarmatz
- Institute for Chemical and Thermal Process EngineeringTechnische Universität BraunschweigLanger Kamp 738106BraunschweigGermany
| | - Janina Heinze
- Institute for Chemical and Thermal Process EngineeringTechnische Universität BraunschweigLanger Kamp 738106BraunschweigGermany
| | - Stephan Scholl
- Institute for Chemical and Thermal Process EngineeringTechnische Universität BraunschweigLanger Kamp 738106BraunschweigGermany
| | - Uwe Schröder
- Institute of Environmental and Sustainable ChemistryTechnische Universität BraunschweigHagenring 3038106BraunschweigGermany
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Schulze S, Oltmanns A, Machnik N, Liu G, Xu N, Jarmatz N, Scholz M, Sugimoto K, Fufezan C, Huang K, Hippler M. N-Glycoproteomic Characterization of Mannosidase and Xylosyltransferase Mutant Strains of Chlamydomonasreinhardtii. Plant Physiol 2018; 176:1952-1964. [PMID: 29288232 PMCID: PMC5841687 DOI: 10.1104/pp.17.01450] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/10/2017] [Accepted: 12/22/2017] [Indexed: 05/21/2023]
Abstract
At present, only little is known about the enzymatic machinery required for N-glycosylation in Chlamydomonas reinhardtii, leading to the formation of N-glycans harboring Xyl and methylated Man. This machinery possesses new enzymatic features, as C. reinhardtii N-glycans are independent of β1,2-N-acetylglucosaminyltransferase I. Here we have performed comparative N-glycoproteomic analyses of insertional mutants of mannosidase 1A (IM Man1A ) and xylosyltransferase 1A (IM XylT1A ). The disruption of man1A affected methylation of Man and the addition of terminal Xyl. The absence of XylT1A led to shorter N-glycans compared to the wild type. The use of a IM Man1A xIM XylT1A double mutant revealed that the absence of Man1A suppressed the IM XylT1A phenotype, indicating that the increased N-glycan trimming is regulated by core β1,2-Xyl and is dependent on Man1A activity. These data point toward an enzymatic cascade in the N-glycosylation pathway of C. reinhardtii with interlinked roles of Man1A and XylT1A. The results described herein represent the first step toward a functional characterization of the enzymatic N-glycosylation machinery in C. reinhardtii.
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Affiliation(s)
- Stefan Schulze
- Institute of Plant Biology and Biotechnology, University of Münster, Münster 48143, Germany
| | - Anne Oltmanns
- Institute of Plant Biology and Biotechnology, University of Münster, Münster 48143, Germany
| | - Nick Machnik
- Institute of Plant Biology and Biotechnology, University of Münster, Münster 48143, Germany
| | - Gai Liu
- Key Laboratory of Algal Biology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, Hubei 430072, China
| | - Nannan Xu
- Key Laboratory of Algal Biology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, Hubei 430072, China
- University of Chinese Academy of Sciences, Beijing 100039, China
| | - Niklas Jarmatz
- Institute of Plant Biology and Biotechnology, University of Münster, Münster 48143, Germany
| | - Martin Scholz
- Institute of Plant Biology and Biotechnology, University of Münster, Münster 48143, Germany
| | - Kazuhiko Sugimoto
- Institute of Plant Biology and Biotechnology, University of Münster, Münster 48143, Germany
| | - Christian Fufezan
- Institute of Plant Biology and Biotechnology, University of Münster, Münster 48143, Germany
| | - Kaiyao Huang
- Key Laboratory of Algal Biology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, Hubei 430072, China
| | - Michael Hippler
- Institute of Plant Biology and Biotechnology, University of Münster, Münster 48143, Germany
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