TY - GEN A1 - Furusato, Eiichi A1 - Bhuyan, Jayatu A1 - Martienssen, Marion A1 - Nixdorf, Brigitte A1 - Imamoto, Hiroomi T1 - Critical Depth Model (modified Sverdrup equation) - Design method for bubble circulation T2 - Journal of JSCE Y1 - 2019 U6 - https://doi.org/10.2208/journalofjsce.7.1_185 SN - 2187-5103 VL - 7 IS - 1 SP - 185 EP - 192 ER - TY - GEN A1 - Kuhn, Ramona A1 - Vornholt, Carsten A1 - Preuß, Volker A1 - Bryant, Isaac Mbir A1 - Martienssen, Marion T1 - Aminophosphonates in Nanofiltration and Reverse Osmosis Permeates T2 - Membranes N2 - Aminophosphonates such as aminotris(methylenephosphonic acid) (ATMP) are common constituents of antiscalants. In nanofiltration (NF) and reverse osmosis (RO) processes, ATMP prevents inorganic scaling leading to more stable membrane performance. So far, little attention has been paid to the possible permeation of aminophosphonates through NF and RO membranes. We have investigated the permeability of these membrane types for ATMP and its potential metabolites iminodi(methylenephosphonic acid) (IDMP) and amino(methylenephosphonic acid) (AMPA) with two different NF membranes (TS40 and TS80) and one RO membrane (ACM2) and three different water compositions (ultra-pure water, synthetic tap water and local tap water). We found traces of phosphonates in all investigated permeates. The highest phosphonate rejection occurred with local tap water for all three membranes investigated. Filtration experiments with a technical antiscalant formulation containing ATMP indicated similar trends of phosphonate permeability through all three membranes. We assume that the separation mechanisms of the membranes are the results of a very complex relationship between physico-chemical properties such as Donnan exclusion, feed pH, feed ionic strength and feed concentration, as well as solute–solute interactions. KW - ATMP KW - AMPA KW - phosphonates KW - nanofiltration KW - reverse osmosis KW - antiscalant KW - drinking water treatment Y1 - 2021 U6 - https://doi.org/10.3390/membranes11060446 SN - 2077-0375 VL - 11 IS - 6 SP - 1 EP - 16 ER - TY - GEN A1 - Böllmann, Jörg A1 - Martienssen, Marion T1 - Comparison of different media for the detection of denitrifying and nitrate reducing bacteria in mesotrophic aquatic environments by the most probable number method T2 - Journal of Microbiological Methods N2 - The cultivation based characterization of microbial communities and the quantification of certain functional bacterial groups is still an essential part of microbiology and microbial ecology. For plate count methods meanwhile low strength media are recommended, since they cover a broader range of different species and result in higher counts compared to established high strength media. For liquid media, as they are used for most probable number (MPN) quantifications, comparisons between high and low strength media are rare. In this study we compare the performance of different high and low strength media for the MPN quantification of nitrate reducing and denitrifying bacteria in two different fresh water environments. We also calculated the cell specific turnover rates of several denitrifying cultures previously enriched in high and low strength media from three different fresh water environments and a waste water treatment plant. For fresh water samples, our results indicate that high strength media detect higher MPN of denitrifying bacteria and in equal MPN of nitrate reducing bacteria compared to low strength media, which is in contrary to plate count techniques. For sediment samples, high and low strength media performed equal. The cell specific turnover rate was independent from the enrichment media and the media of the performance test. The cause of the lower denitrifyer MPN in low strength media remains, however, unclear. The results are important for further MPN quantifications of bacteria in nutrient poor environments and for calculations of nitrogen turnover rates by kinetical models using the number of metabolic active cells as one parameter. Y1 - 2020 U6 - https://doi.org/10.1016/j.mimet.2019.105808 SN - 1872-8359 VL - 168 ER - TY - GEN A1 - Böllmann, Jörg A1 - Martienssen, Marion T1 - Impact of pH conditions and the characteristics of two electrodialysis membranes on biofilm development under semi-realistic conditions T2 - Biofouling N2 - The reuse of treated wastewater for irrigation is of increasing importance. The Ecosave farming project developed a new photocatalytic electrodialysis process for desalination and hygienization. However, membrane scaling significantly reduces filtration efficiency. This study investigated biofilm development on anion and cation exchange membranes at a wide pH range in pre-treated wastewater. Epifluorescence microscopic quantification of the biofilm by cell counts and surface coverage together with 16S rDNA gene copy numbers showed stronger biofilm development on the anion exchange membrane (AEM) compared with the cation exchange membrane (CEM) with up to 105 cells mm−2 and 20% surface coverage after three weeks. As the AEM biofilm developed best in neutral and a slightly alkaline pH, the CEM was colonized preferably at alkaline conditions. Extreme pH conditions strongly inhibited biofilm growth, which might help to minimize the maintenance effort by creating those conditions during the operation of the dialysis cell itself. Y1 - 2021 U6 - https://doi.org/10.1080/08927014.2021.1999424 SN - 1029-2454 VL - 37 IS - 9-10 SP - 998 EP - 1005 ER - TY - GEN A1 - Kuhn, Ramona A1 - Bryant, Isaac Mbir A1 - Jensch, Robert A1 - Böllmann, Jörg T1 - Applications of Environmental Nanotechnologies in Remediation, Wastewater Treatment, Drinking Water Treatment, and Agriculture T2 - Applied Nano N2 - Today, nanotechnologies (NTs) are well established in both private households and commercial markets. NTs are fully accepted in several sectors, such as medicine and pharmacy, and in industries, such as chemistry, electricity, food production, military, and other commercial branches, due to their unique properties. With regard to the growing demands for environmental resources caused by the still-growing global population, the application of NTs is an extremely important new branch in the environmental sector, delivering several advantages. Our review provides a comprehensive overview of the current developments in environmental remediation, wastewater treatment, drinking water treatment, and agriculture. More specifically, in the section on environmental remediation, we review the application of NTs towards enhanced reductive dechlorination, removal of heavy metals and remediation of oil spills. In the section on wastewater treatment, we highlight developments in the adsorption of heavy metals and persistent substances, advanced photocatalytic degradation of common wastewater pollutants, and improvements in membrane filtration processes. In the section on drinking water treatment, we discuss applications for the enhanced disinfection of pathogens, removal of heavy metals, point-of-use treatments, and the removal of organic matter. In the final section, on agriculture, we provide an overview of precision farming and the current state of the art concerning nanofertilisers, nanopesticides, nanoherbicides, and nano(bio)sensors. Y1 - 2022 UR - https://www.mdpi.com/2673-3501/3/1/5 U6 - https://doi.org/10.3390/applnano3010005 SN - 2673-3501 VL - 3 IS - 1 SP - 54 EP - 90 ER - TY - GEN A1 - Okofo, Louis Boansi A1 - Martienssen, Marion T1 - A three-dimensional numerical groundwater flow model to assess the feasibility of managed aquifer recharge in the Tamne River basin of Ghana T2 - Hydrogeology Journal Y1 - 2022 U6 - https://doi.org/10.1007/s10040-022-02492-7 SN - 1431-2174 VL - 30 IS - 4 SP - 1071 EP - 1090 ER - TY - GEN A1 - Sohail, Norman A1 - Riedel, Ramona A1 - Dorneanu, Bogdan A1 - Arellano-Garcia, Harvey T1 - Prolonging the Life Span of Membrane in Submerged MBR by the Application of Different Anti-Biofouling Techniques T2 - Membranes N2 - The membrane bioreactor (MBR) is an efficient technology for the treatment of municipal and industrial wastewater for the last two decades. It is a single stage process with smaller footprints and a higher removal efficiency of organic compounds compared with the conventional activated sludge process. However, the major drawback of the MBR is membrane biofouling which decreases the life span of the membrane and automatically increases the operational cost. This review is exploring different anti-biofouling techniques of the state-of-the-art, i.e., quorum quenching (QQ) and model-based approaches. The former is a relatively recent strategy used to mitigate biofouling. It disrupts the cell-to-cell communication of bacteria responsible for biofouling in the sludge. For example, the two strains of bacteria Rhodococcus sp. BH4 and Pseudomonas putida are very effective in the disruption of quorum sensing (QS). Thus, they are recognized as useful QQ bacteria. Furthermore, the model-based anti-fouling strategies are also very promising in preventing biofouling at very early stages of initialization. Nevertheless, biofouling is an extremely complex phenomenon and the influence of various parameters whether physical or biological on its development is not completely understood. Advancing digital technologies, combined with novel Big Data analytics and optimization techniques offer great opportunities for creating intelligent systems that can effectively address the challenges of MBR biofouling. KW - Membrane bioreactor (MBR) KW - quorum sensing (QS) KW - quorum quenching (QQ) KW - moving bed biofilm reactor (MBBR) KW - moving bed biofilm membrane reactor (MBBMR) KW - model-based anti-fouling strategies Y1 - 2023 UR - https://www.mdpi.com/2077-0375/13/2/217 U6 - https://doi.org/10.3390/membranes13020217 SN - 2077-0375 VL - 13 IS - 2 ER - TY - GEN A1 - Riedel, Ramona A1 - Krahl, Kathrin A1 - Buder, Kai A1 - Böllmann, Jörg A1 - Braun, Burga A1 - Martienssen, Marion T1 - Novel standard biodegradation test for synthetic phosphonates T2 - Journal of Microbiological Methods N2 - Determination of biodegradation of synthetic phosphonates such as aminotris(methylenephosphonic acid) (ATMP), ethylenediamine tetra(methylenephosphonic acid) (EDTMP), or diethylenetriamine penta(methylenephosphonic acid) (DTPMP) is a great challenge. Commonly, ready biodegradability of organic substances is assessed by OECD 301 standard tests. However, due to the chemical imbalance of carbon to phosphorus synthetic phosphonates do not promote microbial growth and, thus, limiting its biodegradation. Therefore, standard OECD test methods are not always reliable to predict the real biodegradability of phosphonates. In the presented study, we report the development of a standardized batch system suitable to synthetic phosphonates such as ATMP, EDTMP, DTPMP and others. The novel standard batch test is applicable with pure strains, activated sludge from different wastewater treatment plants (i.e., municipal and industrial), and with tap water as inoculum. We optimized the required calcium and magnesium exposure levels as well as the amount of the start inoculum biomass. We demonstrated that our test also allows to determine several parameters including ortho-phosphate (o-PO43􀀀 ), total phosphorus (TP), ammonium (NH4+) and total organic carbon (TOC). In addition, also LC/MS analyses of cell-free medium is applicable for determining the mother compounds and metabolites. We applied our optimized standardized batch with selected phosphonates and evidenced that the chemical structure has a major influence of the microbial growth rates. Thus, our novel batch test overcomes drawbacks of the OECD 301 test series for determination of easy biodegradability for stoichiometric imbalanced organic compounds such as phosphonates. Y1 - 2023 U6 - https://doi.org/10.1016/j.mimet.2023.106793 SN - 1872-8359 SN - 0167-7012 VL - Vol. 212 SP - 1 EP - 13 ER - TY - CHAP A1 - Kuhn, Ramona A1 - Pollice, Alfieri A1 - Laera, Guiseppe A1 - Lipollis, Rosa A1 - Papa, Sergio ED - Lesjean, Boris T1 - Standard assays and metaproteomes as new approaches for functional characterization of membrane bioreactor biomass T2 - Membrane Technologies for Wastewater Treatment and Reuse, Proceedings der 2nd IWA National Young Water Professionals Conference in Berlin, 4.-6. Juni 2007 KW - Membrane bioreactors KW - biomass characterisation KW - EPS/SMP KW - metaproteomes Y1 - 2007 SN - 987-3-9811684-0-2 SP - 57 EP - 64 PB - IWA CY - Berlin ER - TY - THES A1 - Richter, Thomas T1 - Intrinsisch antimikrobielle Polyurethane : Synthesekonzepte - neue Strukturen - Charakterisierung Y1 - 2020 CY - Cottbus ; Senftenberg ER - TY - THES A1 - Mohanty, Ashirbad T1 - Effects of helophyte species and system type in treatment of artificial acid mine drainage under carbon-deficient and sulphate-reducing conditions in laboratory-scale horizontal flow constructed wetlands Y1 - 2018 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:co1-opus4-48595 ER - TY - THES A1 - Pulgarin Monsalve, Isabel Cristina T1 - Fundamentals of process design and contraol of Anaerobic Sequencing Batch Gas-Lift Reactor regarding the mixing process Y1 - 2020 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:co1-opus4-55693 ER - TY - CHAP A1 - Martienssen, Marion A1 - Schirmer, Mario T1 - Enhancing Natural Attenuation of MTBE at Contaminated Megasites T2 - NGWA Conference on MTBE and Perchlorate: Assessment, Remediation and Public Policy, 26.-27. Mai 2005, San Francisco, California Y1 - 2005 UR - http://info.ngwa.org/gwol/pdf/062281335.pdf SP - 219 EP - 229 ER - TY - GEN A1 - Coban, Oksana A1 - Kuschk, Peter A1 - Kappelmeyer, Uwe A1 - Spott, Oliver A1 - Martienssen, Marion A1 - Jetten, Mike S. M. A1 - Knöller, Kay T1 - Nitrogen transforming community in a horizontal subsurface-flow constructed wetland T2 - Water research Y1 - 2015 U6 - https://doi.org/0.1016/j.watres.2015.02.018 SN - 1879-2448 IS - 74 SP - 203 EP - 212 ER - TY - CHAP A1 - Rücker, Jacqueline A1 - Knie, Matthias A1 - Voss, Maren A1 - Martienssen, Marion A1 - Grüneberg, Björn A1 - Kolzau, Sebastian A1 - Nixdorf, Brigitte T1 - Abschätzung des Stickstoffeintrages durch planktische Cyanobakterien (Nostocales) T2 - Erweiterte Zusammenfassungen der Jahrestagung der Deutschen Limnologischen Gesellschaft (DGL) in Essen 2015 KW - Stickstofffixierung KW - Licht Y1 - 2016 SN - 978-3-9813095-8-4 SP - 170 EP - 177 PB - Eigenverlag der DGL CY - Hardegsen ER - TY - CHAP A1 - Martienssen, Marion A1 - Schirmer, Mario T1 - Enhanced Natural Attenuation of MTBE - Laboratory studies and its verification in field experiments - The METLEN Projectat the Leuna Site T2 - First European Conference on MTBE, conference proceedings, September 8 - 9, 2003 Y1 - 2003 SN - 3-934253-24-5 SP - 88 EP - 94 PB - Forum für Abfallwirtschaft und Altlasten e.V. CY - Pirna ET - 1. Auflage ER - TY - CHAP A1 - Martienssen, Marion ED - Kühle-Weidemeier, Matthias T1 - Alternative biologisch aktivierte Oberflächenabdichtungen für kleinere Deponien T2 - Tagungsband, Praxistagung Deponie 2005, 7. und 8. Dezember 2004 Y1 - 2005 SN - 3-86537-284-8 SP - 136 EP - 144 PB - Cuvillier Verlag CY - Göttingen ET - 1. Auflage ER - TY - GEN A1 - Kuhn, Ramona A1 - Bryant, Isaac Mbir A1 - Martienssen, Marion T1 - Supplementary data on rapid sample clean-up procedure for aminophosphonate determination by LC/MS analysis T2 - MethodsX N2 - Minimising matrix effects through high sample purity is of major importance for LC/MS analysis. Here we provide supplementary data and protocols related to the article “Rapid sample clean-up procedure of aminophosphonates for LC/MS analysis”(revised article submitted to Talanta) [1] . It is demonstrated that the tested phosphonates iminodi(methylenephosphonic acid) (IDMP), hydroxyethelidene(diphosphonic acid) (HEDP), aminotris(methylenephosphonic acid) (ATMP), ethylenediaminetetra(methyloenephosphonic acid) (EDTMP) and diethylenetriaminepenta(methylenephosphonic acid) (DTPMP) dissolved in tap water are not detectable by LC/MS without sample clean-up. Only the smallest aminophosphonate amino(methylenephosphonic acid) (AMPA) was detectable but the recovery is decreased drastically. The optimised sample clean-up with cation exchange resin (CER) Dowex 50WX8 is described in detail and illustrated. The protocol is provided. The influence of the incubation time, addition of different ammonium acetate concentrations, different samples pHs and different water qualities is demonstrated and preferred clean- up conditions are recommended. Calibration results of all tested aminophosphonates are validated regarding limit of detection, limit of quantification, lower limit of quantification, absolute and relative process standard deviation. A final recommendation for the best clean-up condition for all six tested aminophosphonates is provided. KW - Phosphonates KW - LC/MS analysis KW - Cation Exchange Resin KW - Clean-up Y1 - 2020 U6 - https://doi.org/10.1016/j.mex.2020.100933 SN - 2215-0161 VL - 07 SP - 1 EP - 11 ER - TY - THES A1 - Kalbfleisch, Katrin T1 - Synthese sowie Homo- und Copolymerisation von tert.-Butylaminomethylstryrol Y1 - 2018 CY - Cottbus ER - TY - CHAP A1 - Schirmer, Mario A1 - Martienssen, Marion ED - Barceló, Damià T1 - Enhanced Natural Attenuation of MTBE T2 - Fuel oxygenates Y1 - 2007 SN - 978-3-540-72640-1 SN - 978-3-540-72641-8 SP - 139 EP - 158 PB - Springer CY - Berlin [u.a.] ER -