Browsing Department of Chemistry by Author "Ghoreishi, Solmaz"
Now showing items 1-7 of 7
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Effect of Reaction Conditions on Catalytic and Noncatalytic Lignin Solvolysis in Water Media Investigated for a 5 L Reactor
Ghoreishi, Solmaz; Barth, Tanja; Hermundsgård, Dag Helge (Peer reviewed; Journal article, 2019)The high content of oxygen in the lignin polymer and the prevalence of phenolic functional groups make the conversion of lignin to fuels and value-added products with well-defined chemical properties challenging. The ... -
Exploring hydrothermal liquefaction (HTL) of digested sewage sludge (DSS) at 5.3 L and 0.025 L bench scale using experimental design
Hegdahl, Stian Hersvik; Ghoreishi, Solmaz; Løhre, Camilla; Barth, Tanja (Journal article; Peer reviewed, 2023)A common perspective within the prospect of a greener future is utilising our waste materials. One waste material of which the world has abundant resources, and where we will keep having resources, is sewage sludge. This ... -
Formic acid assisted liquefaction of lignin in water and ethanol, investigated for a 0.025 and a 5 L batch reactor: Comparison of yields and compositions of the products
Ghoreishi, Solmaz; Barth, Tanja; Derribsa, Hailegebrel (Peer reviewed; Journal article, 2019)Formic acid assisted conversion of lignin to liquids (LtL-process), where lignin is hydrodeoxygenated in a one-step conversion, produces bio-oils with a molecular weight range of 300–600 Da that comprise a complex mixture ... -
Identification and quantification of valuable platform chemicals in aqueous product streams from a preliminary study of a large pilot-scale steam explosion of woody biomass using quantitative nuclear magnetic resonance spectroscopy
Ghoreishi, Solmaz; Løhre, Camilla; Hermundsgård, Dag Helge; Molnes, Joakim Lindgaard; Tanase-Opedal, Mihaela; Brusletto, Rune; Barth, Tanja (Journal article; Peer reviewed, 2022)Steam explosion breaks down the polymeric matrix and enables the recovery of valuable compounds from lignocellulosic feedstock. In the steam explosion process, biomass is treated with high-pressure steam which subsequently ... -
Investigating solids present in the aqueous stream during STEX condensate upgrading—a case study
Hermundsgård, Dag Helge; Ghoreishi, Solmaz; Opedal, Mihaela Tanase; Brusletto, Rune; Barth, Tanja (Journal article; Peer reviewed, 2022)Steam explosion (STEX) of woody biomass is an efficient pretreatment method in the production of water-resistant wood pellets. The STEX process also generates an aqueous condensate stream containing dissolved organic ... -
Large-scale conversion of lignin to liquid through formic acid assisted solvolysis in aqueous and ethanolic reaction media: comparison of yields and product compositions
Ghoreishi, Solmaz (Doctoral thesis, 2020-01-17)Biomass has recently received much attention as an attractive renewable energy resource and a promising alternative to fossil carbon resources for production of renewable biofuels and other value-added chemicals due to ... -
Stirred and non-stirred lignin solvolysis with formic acid in aqueous and ethanolic solvent systems at different levels of loading in a 5-L reactor
Ghoreishi, Solmaz; Barth, Tanja; Derribsa, Hailegebrel (Peer reviewed; Journal article, 2019)Lignin polymer is biologically and chemically stable and requires highly vigorous conditions for de-polymerization, and subsequent stabilization of the monomeric conversion products to prevent re-polymerization and char ...