Zobrazeno 1 - 10
of 83
pro vyhledávání: '"Marco Maschietti"'
Publikováno v:
Chemical Engineering Transactions, Vol 74 (2019)
Supercritical carbon dioxide extraction was utilized for the fractionation of a pinewood derived hydrothermal liquefaction bio-crude. The experiments were performed at temperature 120 ºC and at pressure levels that correspond to CO2 density of 500,
Externí odkaz:
https://doaj.org/article/9ef9ccd9617c44da8c2b3e7da322588f
Autor:
Marco Maschietti
Publikováno v:
Chemical Engineering Transactions, Vol 74 (2019)
A process analysis of multistage gas-oil separation coupled with gas re-compression was carried out, with reference to offshore oil and gas applications. Two feed types (light oil and gas condensate), different feed conditions (30 bar and 60 bar; 48
Externí odkaz:
https://doaj.org/article/548fb49118054df7a1338ae366ec4cf1
Publikováno v:
Chemical Engineering Transactions, Vol 74 (2019)
The performance of natural gas dehydration using triethylene glycol (TEG) strongly depends on the purity level of TEG in the regeneration unit. Coldfinger is a TEG regeneration technology reported to be capable of increasing TEG purity to levels abov
Externí odkaz:
https://doaj.org/article/febced8600614bee831a59908fe30679
Autor:
Leah Johansen, Lykke Kloster, Anders Andreasen, Sergey Kucheryavskiy, Rudi Nielsen, Marco Maschietti
Publikováno v:
Chemical Engineering Transactions, Vol 74 (2019)
Triazine is one of the most commonly used scavengers for removal of hydrogen sulphide in the offshore oil and gas industry, but the kinetics of the scavenging reactions are still poorly understood. In this work the feasibility of Raman spectroscopy f
Externí odkaz:
https://doaj.org/article/15d05cd49c11439293666eb834abdd73
Autor:
Anders Ahlbom, Marco Maschietti, Rudi Nielsen, Huyen Lyckeskog, Merima Hasani, Hans Theliander
Publikováno v:
Energies, Vol 14, Iss 4, p 932 (2021)
In this study, Kraft lignin was depolymerised by hydrothermal liquefaction in near-critical water (290–335 °C, 250 bar) using Na2CO3 as an alkaline catalyst. Isopropanol was used as a co-solvent with the objective of investigating its capping effe
Externí odkaz:
https://doaj.org/article/179b646acc574a9db52658bd75ac87df
Autor:
Nikolaos Montesantos, Marco Maschietti
Publikováno v:
Energies, Vol 13, Iss 7, p 1600 (2020)
Bio-oils derived from the thermochemical processing of lignocellulosic biomass are recognized as a promising platform for sustainable biofuels and chemicals. While significant advances have been achieved with regard to the production of bio-oils by h
Externí odkaz:
https://doaj.org/article/30711746ef1547cc8e5a1a1b27a292ad
Publikováno v:
Montesantos, N, Kohli, K, Sharma, B K & Maschietti, M 2022, ' Hydrotreatment of Supercritical Carbon Dioxide Extracts of Hydrothermal Liquefaction Lignocellulosic Biocrude ', Industrial and Engineering Chemistry Research, vol. 61, no. 41, pp. 15114-15124 . https://doi.org/10.1021/acs.iecr.2c02109
Raw lignocellulosic biocrude produced by hydrothermal liquefaction and its supercritical carbon dioxide extract (SE) were hydrotreated at 350-405 °C and for 2-6 h utilizing commercial CoMo and NiMo catalysts. The hydrotreatment reduced the oxygen co
Autor:
Iveth Romero, Fernando Montero, Sergey Kucheryavskiy, Reinhard Wimmer, Anders Andreasen, Marco Maschietti
Publikováno v:
Industrial & Engineering Chemistry Research.
Publikováno v:
Ahlbom, A, Maschietti, M, Nielsen, R, Hasani, M & Theliander, H 2023, ' On the hydrothermal depolymerisation of kraft lignin using glycerol as a capping agent ', Holzforschung, vol. 77, no. 3, pp. 159-169 . https://doi.org/10.1515/hf-2022-0146
Depolymerisation of kraft lignin under hydrothermal conditions was investigated at short residence times (1–12 min) with glycerol being used as a capping agent. The weight average molecular weight (M w) of the products decreased within the first mi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c57f321372e8aa73add5c1f043baa7e4
https://vbn.aau.dk/da/publications/6ef308b2-93cd-4772-b24d-bf9e4e10c45f
https://vbn.aau.dk/da/publications/6ef308b2-93cd-4772-b24d-bf9e4e10c45f
Publikováno v:
Montesantos, N, Skjolding, L M, Baun, A, Muff, J & Maschietti, M 2023, ' Reducing the environmental impact of offshore H 2 S scavenging wastewater via hydrothermal oxidation ', Water Research, vol. 230, 119507 . https://doi.org/10.1016/j.watres.2022.119507
The discharge of H2S scavenging wastewaters, containing spent and unspent scavengers (SUS), into the marine environment is a large contributor to the environmental impact of offshore oil and gas production. Hydrothermal oxidation (HTO) can be a viabl
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e9d3df3a22a9f1d9e339f76d7c7e824b
https://vbn.aau.dk/ws/files/539398544/1-s2.0-S004313542201452X-main.pdf
https://vbn.aau.dk/ws/files/539398544/1-s2.0-S004313542201452X-main.pdf