000110773 001__ 110773
000110773 005__ 20240319080947.0
000110773 0247_ $$2doi$$a10.1007/s12649-021-01603-x
000110773 0248_ $$2sideral$$a125714
000110773 037__ $$aART-2022-125714
000110773 041__ $$aeng
000110773 100__ $$aDominik, Wüst
000110773 245__ $$aProcess water recirculation during hydrothermal carbonization as a promising process step towards the production of nitrogen-doped carbonaceous materials
000110773 260__ $$c2022
000110773 5060_ $$aAccess copy available to the general public$$fUnrestricted
000110773 5203_ $$aHydrothermal Carbonization (HTC) refers to the conversion of biogenic wastes into char-like solids with promising perspectives for application, but a process water (PW) results which is difficult to dispose untreated. Thus, a biorefinery approach including one or two recirculation steps with the additional objective of improving the physico-chemical characteristics of the solid was performed in this study. During HTC, constitutive molecules such as saccharides, proteins and lignin of Brewer''s Spent Grains decompose into hundreds of organic compounds, following complex reactions. To get deeper insights a combination of proximate, ultimate and structural analysis for solid products as well as liquid chromatography for liquid products were the choice. The main reactions could be identified by key compounds of low and high molecular weight resulting from hydrolysis, dehydration, decarboxylation, deamination as well as amide formation and condensation reactions. Their intensity was influenced by the feedwater pH and reaction temperature. Via reactions of Maillard character up to around 90% of the dissolved nitrogen of the recirculated process water at 200, 220 and 240 degrees C result in the formation of nitrogen containing heterocycles or rather Quartnernary nitrogen incorporated into the hydrochar (HC). Thus, already one recirculation step during HTC at 240 degrees C promises the fabrication of high added-value materials, i.e. nitrogen doped carbonaceous materials.
000110773 540__ $$9info:eu-repo/semantics/openAccess$$aby$$uhttp://creativecommons.org/licenses/by/3.0/es/
000110773 590__ $$a3.2$$b2022
000110773 591__ $$aENVIRONMENTAL SCIENCES$$b146 / 275 = 0.531$$c2022$$dQ3$$eT2
000110773 594__ $$a6.9$$b2022
000110773 592__ $$a0.599$$b2022
000110773 593__ $$aEnvironmental Engineering$$c2022$$dQ2
000110773 593__ $$aWaste Management and Disposal$$c2022$$dQ2
000110773 593__ $$aRenewable Energy, Sustainability and the Environment$$c2022$$dQ2
000110773 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/publishedVersion
000110773 700__ $$aArauzo, Pablo
000110773 700__ $$aHabicht, Sonja
000110773 700__ $$0(orcid)0000-0001-9220-9909$$aCazaña, Fernando$$uUniversidad de Zaragoza
000110773 700__ $$aFiori, Luca
000110773 700__ $$aKruse, Andrea
000110773 7102_ $$15005$$2555$$aUniversidad de Zaragoza$$bDpto. Ing.Quím.Tecnol.Med.Amb.$$cÁrea Ingeniería Química
000110773 773__ $$g13 (2022), 2349–2373$$pWaste and biomass valorization$$tWASTE AND BIOMASS VALORIZATION$$x1877-2641
000110773 8564_ $$s2843438$$uhttps://zaguan.unizar.es/record/110773/files/texto_completo.pdf$$yVersión publicada
000110773 8564_ $$s1785582$$uhttps://zaguan.unizar.es/record/110773/files/texto_completo.jpg?subformat=icon$$xicon$$yVersión publicada
000110773 909CO $$ooai:zaguan.unizar.es:110773$$particulos$$pdriver
000110773 951__ $$a2024-03-18-12:40:24
000110773 980__ $$aARTICLE