Zobrazeno 1 - 10
of 30
pro vyhledávání: '"Klaus Raffelt"'
Publikováno v:
Materials Science for Energy Technologies, Vol 4, Iss , Pp 69-80 (2021)
The functionalization of sustainable carbon materials and their application in energy storage systems attract more and more relevancy. Bakery waste and spent coffee grounds were chosen as abundant organic residues and found to be suitable starting ma
Externí odkaz:
https://doaj.org/article/43eef193426d4c7fb9235c9f82fe2855
Autor:
Mariana Myriam Campos Fraga, Bruno Lacerda de Oliveira Campos, Handoyo Hendrawidjaja, Caroline Carriel Schmitt, Klaus Raffelt, Nicolaus Dahmen
Publikováno v:
Energies, Vol 15, Iss 13, p 4762 (2022)
Due to the high acid, oxygen and water contents of fast pyrolysis oil, it requires the improvement of its fuel properties by further upgrading, such as catalytic hydrodeoxygenation (HDO). In this study, Nb2O5 was evaluated as a support of Pd-based ca
Externí odkaz:
https://doaj.org/article/423752f98a3146299a6d645748be0ea4
Publikováno v:
Fermentation, Vol 6, Iss 3, p 84 (2020)
Syngas, the product of biomass gasification, can play an important role in moving towards the production of renewable chemical commodities, by using acetogenic bacteria to ferment those gaseous mixtures. Due to the complex and changing nature of biom
Externí odkaz:
https://doaj.org/article/d734f51b974544b8ba56c223f53178ae
Autor:
Claudia Prestigiacomo, Joscha Zimmermann, Ursel Hornung, Klaus Raffelt, Nicolaus Dahmen, Onofrio Scialdone, Alessandro Galia
Waste carbonaceous matrices, such as sewage sludge (SS) seem to have a great potential, because they are namely costless matrices compared to the microalgae and hydrothermal liquefaction (HTL) can be considered an interesting route to dispose and val
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=od______3658::0b2016bec7c7b5f5e185ee51ee146036
http://hdl.handle.net/10447/565009
http://hdl.handle.net/10447/565009
Autor:
Claudia Prestigiacomo, Joscha Zimmermann, Usrel Horung, Klaus Raffelt, Nicolaus Dahmen, Onofrio Scialdone, Alessandro Galia
Publikováno v:
Fuel Processing Technology, 237, Art.-Nr.: 107452
Hydrothermal liquefaction (HTL) of sewage sludge (SS) was performed in the presence of metallic Zn, Fe and Ni to investigate their effect on the performances of the process in terms of product yields and quality. Experiments were performed in subcrit
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0ade6984e6bdac06faad347538ac895a
https://publikationen.bibliothek.kit.edu/1000150179
https://publikationen.bibliothek.kit.edu/1000150179
Autor:
Dahmen, Mariana Myriam Campos Fraga, Bruno Lacerda de Oliveira Campos, Handoyo Hendrawidjaja, Caroline Carriel Schmitt, Klaus Raffelt, Nicolaus
Publikováno v:
Energies; Volume 15; Issue 13; Pages: 4762
Due to the high acid, oxygen and water contents of fast pyrolysis oil, it requires the improvement of its fuel properties by further upgrading, such as catalytic hydrodeoxygenation (HDO). In this study, Nb2O5 was evaluated as a support of Pd-based ca
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=multidiscipl::9239a8f38825a92da1e210dcc09f74bd
Autor:
Wisniewski, Tarcísio Martins Santos, Wenes Ramos da Silva, Jhonattas de Carvalho Carregosa, Caroline Carriel Schmitt, Renata Moreira, Klaus Raffelt, Nicolaus Dahmen, Alberto
Publikováno v:
Catalysts; Volume 12; Issue 4; Pages: 355
In the present work, we compared the chemical profile of the organic compounds produced in non-catalytic pyrolysis of sugarcane bagasse at 500 °C with those obtained by the in-line catalytic upgrading of the vapor phase at 350 °C. The influence ove
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=multidiscipl::ad7517a7f8b1bc8d5540588642baaa07
Autor:
Yujie Fan, Alexander Hoffmann, Ursel Hornung, Klaus Raffelt, Thomas A. Zevaco, Nicolaus Dahmen
Publikováno v:
Journal of Analytical and Applied Pyrolysis, 168, Art.-Nr.: 105792
The formation of cyclic dipeptides, 2,5-diketopiperazines (DKP), from lysine in aqueous solution was investigated at hydrothermal conditions (250 to 350 °C) without the addition of catalyst. The products obtained were analyzed by GC–MS combined wi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e7d992cc7d064528a92599e926081583
https://publikationen.bibliothek.kit.edu/1000152867/149704523
https://publikationen.bibliothek.kit.edu/1000152867/149704523
Publikováno v:
Energy & Fuels, 36 (23), 14292–14303
Organic solid wastes such as sewage sludge are potential feedstocks for the production of drop-in biofuels. Hydrothermal liquefaction (HTL) is a process that converts the wet sewage sludge into an organic biocrude. To fulfill industrial fuel standard
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::99ec944c8cdfc78fc15e6e607aaa3c54
Aldehydes and ketones in pyrolysis oil: analytical determination and their role in the aging process
Autor:
Clarissa Baehr, Gavin J. Smith, Daniel Sleeman, Thomas A. Zevaco, Klaus Raffelt, Nicolaus Dahmen
Publikováno v:
RSC Advances, 12 (12), 7374–7382
Aldehydes and ketones are known to play a role in the aging process of pyrolysis oil and generally, aldehydes are known for their high reactivity. In order to discern in pyrolysis oil the total aldehyde concentration from that of the ketones, a proce
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1ff61f09dcd9410a03938fe5a4ad52fb
https://publikationen.bibliothek.kit.edu/1000143841/148515911
https://publikationen.bibliothek.kit.edu/1000143841/148515911