@misc{Gruening2021,
  author    = {Gr{\"u}ning, Helmut},
  title     = {15 Jahre Entwicklung und Betrieb technischer Regenwasserfilter: Vom Schacht bis zu Systemen im zentralen Maßstab. 10. kommunaler Erfahrungsaustausch „Regenwasserbehandlung in der Praxis", veranstaltet von der Dr. Pecher AG, der AGG/Gelsenkanal, der Gelsenwasser AG und der WSW Energie \& Wasser AG, am 20. Mai 2021 in M{\"u}nster},
  year      = {2021},
  language  = {de}
}
@techreport{Budde2021,
  author    = {Budde, Janik},
  title     = {A comparison of reverse electrodialysis and pressure retarded osmosis as technologies for salinity gradient power},
  doi       = {10.25974/ren_rev_2021_14},
  url       = {http://nbn-resolving.de/urn:nbn:de:hbz:836-opus-136882},
  pages     = {72-78},
  year      = {2021},
  abstract  = {The global salinity gradient power (SGP) potential is between 1650 - 2000 TWH/a and can be converted by mixing two solutions with different salinities. The harnessing of SGP for conversion into power can be accomplished by means of pressure retarded osmosis (PRO) and reverse electrodialysis (RED). PRO and RED are membrane-based technologies and have different working principles. PRO uses a semipermeable membrane to seperate a concentrated salt solution from a diluted solution. The diluted solution flows through the semipermeable membrane towards the concentrated solution, which increases the pressure within the concentrated solution chamber. The pressure is balanced by a turbine and electricity is generated. RED uses the transport of ions through cation and anion exchange membranes. The chambers between the membranes are alternately filled with a concentrated and diluted solution. The salinity gradient difference is the driving force in transporting ions that results in an electric potential, which is then converted to electricity. The comparison shows that there are two different fields of application for PRO and RED. PRO is especially suitable at extracting salinity energy from large concentration differences. In contrast, RED are not effect by increasing concentration differences. So PRO are supposed to focus on applications with brines or waste water and RED on applications with river water and seawater. Moreover, just a few measured values from processes under real conditions are available, which makes it difficult to compare PRO and RED.},
  language  = {en}
}
@misc{WetterBruegging2021,
  author    = {Wetter, Christof and Br{\"u}gging, Elmar},
  title     = {Aktuelle H2-Forschungsthemen im Forschungsteam; H2-Netzwerk Westm{\"u}nsterland; Wirtschaftsforderungsgesellschaft Kreis Borken; Februar 2021},
  year      = {2021},
  language  = {de}
}
@misc{WetterBruegging2021,
  author    = {Wetter, Christof and Br{\"u}gging, Elmar},
  title     = {Aktuelle H2-Forschungsthemen im Forschungsteam; Online-Veranstaltung "Wasserstoff", Wirtschaftsf{\"o}rderung Kreis Coesfeld GmbH, M{\"a}rz 2021},
  year      = {2021},
  language  = {de}
}
@techreport{Wagenknecht2021,
  author    = {Wagenknecht, Fiona},
  title     = {Assessment of noise mitigation measures during pile driving of larger offshore wind foundations},
  doi       = {10.25974/ren_rev_2021_04},
  url       = {http://nbn-resolving.de/urn:nbn:de:hbz:836-opus-136786},
  pages     = {19-23},
  year      = {2021},
  abstract  = {Wind energy is an important source of electricity generation, but the construction of offshore wind foundations causes high underwater sound pressure, harming marine life. In this context limiting values for underwater noise emissions were set to protect the marine flora and fauna. Therefore, noise mitigation measures during pile driving are mandatory to comply with these limits. Current development in the wind industry lead to increasing wind turbine sizes, requiring a larger pile diameter, which leads to higher underwater noise emissions. As a result, the state of the art noise mitigation systems might not be sufficient and a combination of different technologies is necessary. This article focuses on the issue of noise mitigation during pile driving with respect to large pile sizes. First, the most tested and proven noise mitigation techniques (big bubble curtain, hydro sound damper, and IHC-noise mitigation system) are described, following an analysis of noise reduction measurements in applications at different offshore wind farm projects. In the end the suitability of current noise mitigation systems for large monopiles is evaluated, regarding their effectiveness and practicability.},
  language  = {en}
}
@misc{FranzenReuterGruening2021,
  author    = {Franzen-Reuter, Isabelle and Gr{\"u}ning, Helmut},
  title     = {Auswirkungen des Coronavirus auf Luft und Wasser. Online-Vortrag im Rahmen der fhuture-Reihe der TAFH M{\"u}nster, am 9. Februar 2021},
  year      = {2021},
  language  = {de}
}
@book{WeinrichNelles2021,
  author    = {Weinrich, S{\"o}ren and Nelles, Michael},
  title     = {Basics of Anaerobic Digestion: Biochemical Conversion and Process Modelling},
  publisher = {DBFZ},
  isbn      = {978-3-946629-72-6},
  year      = {2021},
  language  = {en}
}
@misc{Gruening2021,
  author    = {Gr{\"u}ning, Helmut},
  title     = {Bewertungs- und Monitoringkonzept f{\"u}r die klimaresiliente Region. Vortrag im Rahmen des 6. Experten-Forums der Zukunftsinitiative "Heiße Region - coole Strategien - blau-gr{\"u}ne Zukunftsst{\"a}dte: Gemeinsam {\"u}bernehmen wir Verantwortung", veranstaltet von der Stadt Herne und der Emschergenossenschaft/Lippeverband in Herne},
  year      = {2021},
  language  = {de}
}
@inproceedings{MaukyWeinrichBrosowskietal.2021,
  author    = {Mauky, Eric and Weinrich, S{\"o}ren and Brosowski, Andr{\´e} and Krause, Tim and Kretzschmar, J{\"o}rg},
  title     = {Bewertungssystematik zur Eignung landwirtschaftlicher Reststoffe f{\"u}r die Flexibilisierung des Biogasprozesses},
  series = {Tagungsband 15. Rostocker Bioenergieforum},
  booktitle = {Tagungsband 15. Rostocker Bioenergieforum},
  address   = {Rostock},
  isbn      = {978-3-86009-524-9},
  pages     = {169 -- 175},
  year      = {2021},
  language  = {de}
}
@misc{Gruening2021,
  author    = {Gr{\"u}ning, Helmut},
  title     = {Bew{\"a}sserungskonzepte und {\"U}berflutungsvorsorge f{\"u}r den urbanen Raum (Projekt BeGr{\"u}Klim). Online-Vortrag im Rahmen des 1. Austauschworkshops zum DAS-F{\"o}rderprogramm, veranstaltet von ecolo - Agentur f{\"u}r {\"O}kologie und Kommunikation im Auftrag der ZUG gGmbH, am 8. Juni 2021},
  year      = {2021},
  language  = {de}
}