Produktion und Nutzung von Pflanzenölkraftstoffen

Kaltschmitt, Martin; Müller‐Langer, Franziska; Neuling, Ulf; Remmele, Edgar; Thuneke, Klaus

doi:10.1007/978-3-662-47438-9_16

Cited by 7 publications

(4 citation statements)

References 25 publications

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“…Because of its carbon content, biomass is a potential source for renewable liquid fuels and organic chemicals with a lower carbon footprint compared to fossil products. Usually, biomass consisting of cellulose, hemicellulose, and lignin is rich in oxygen [1]. Due to storage, distribution, and application reasons, the oxygen content for liquid fuels such as gasoline or diesel fuel is restricted, e.g., by fuel specifications.…”

Section: Background Of the Workmentioning

confidence: 99%

Experimental Evaluation of a New Approach for a Two-Stage Hydrothermal Biomass Liquefaction Process

et al. 2020

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A new approach for biomass liquefaction was developed and evaluated in a joint research project. Focus of the project, called FEBio@H2O, lies on a two-step hydrothermal conversion. Within step 1, the input biomass is converted employing a hydrothermal degradation without added catalyst or by homogeneous catalysis. Within step 2, the hydrogen accepting products of step 1, e.g., levulinic acid (LA) are upgraded by a heterogeneously catalyzed hydrogenation with hydrogen donor substances, e.g., formic acid (FA). As a result, components with an even lower oxygen content in comparison to step 1 products are formed; as an example, γ-valerolactone (GVL) can be named. Therefore, the products are more stable and contained less oxygen as requested for a possible application as liquid fuel. As a hydrothermal process, FEBio@H2O is especially suitable for highly water-containing feedstock. The evaluation involves hydrothermal conversion tests with model substances, degradation of real biomasses, transfer hydrogenation or hydrogenation with hydrogen donor of model substances and real products of step 1, catalyst selection and further development, investigation of the influence of reactor design, the experimental test of the whole process chain, and process assessment.

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Section: Background Of the Workmentioning

confidence: 99%

Experimental Evaluation of a New Approach for a Two-Stage Hydrothermal Biomass Liquefaction Process

et al. 2020

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“…In general, there are various options to produce alternative transportation fuels based on biomass. Depending on the conversion of biomass, in principal three main pathways come into consideration: (i) the thermochemical pathway, (ii) the physicochemical conversion pathway, and (iii) the biochemical conversion pathway [13]. Linking bioenergy and other renewable resources, also electrochemical conversion is gaining increasing interest.…”

Section: Characteristics Of Most Relevant Technologiesmentioning

confidence: 99%

“…For the pretreatment of the feedstock (e.g., vegetable oils as crude oil, animal fats), conventional degumming technology known from vegetable oil processing or conventional biodiesel production is used to remove undesired impurities [21]. Moreover, removal of pigments, residual mucins, trace elements, and soaps using adsorbents is usually applied [13]. The removal of free fatty acids (FFA) is rarely discussed, while implementation of FFA in the HVO/HEFA process does not pose a challenge [22], but the high temperatures and corrosive properties of the free fatty acids mean that a prior removal of these molecules could be desirable.…”

Section: Hvo/hefamentioning

confidence: 99%

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Biofuels: A Technical, Economic, and Environmental Comparison

Mueller‐Langer¹,

Majer²,

Perimenis³

2017

Encyclopedia of Sustainability Science and Technology

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Quantification of fructans in cereal‐based bioethanol stillage based on a simplified analytical method

Zimmermann

Kaltschmitt

2022

Cereal Chem

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Background and Objectives Cereal‐based bioethanol stillage, the main by‐product of industrial bioethanol production, is a potential substrate for fructans. However, the quantification of fructans in such complex sample matrices is still a challenge for the corresponding analytics to be overcome to allow for the identification and utilization of such unused fructan sources. Especially a possible utilization or rather the corresponding process development requires appropriate analytics first. Thus, this paper aims to develop and apply a method for fructan quantification in bioethanol stillage using common a high‐performance liquid chromatography–refractive index detector. Findings A new approach for fructan quantification is presented allowing for simple fructan determination in bioethanol stillage for comparably high sample throughput. The developed analytical method performs fructan quantification by means of fructose‐ and glucose‐equivalent determination after targeted acidic hydrolysis adapted to the respective sample matrix. On the basis of this method, up to 2.5% of fructans were found in the dry matter of cereal‐based bioethanol stillage. Conclusion Cereal‐based bioethanol stillage is assessed to be a potential source of fructans. The presented analytical method can be the basis for respective process development and, thus, may contribute to a higher‐value utilization of stillage. Significance and Novelty According to current knowledge, no determination of fructans in stillage or corresponding analytical methods have been published so far.

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Produktion und Nutzung von Pflanzenölkraftstoffen

Cited by 7 publications

References 25 publications

Experimental Evaluation of a New Approach for a Two-Stage Hydrothermal Biomass Liquefaction Process

Experimental Evaluation of a New Approach for a Two-Stage Hydrothermal Biomass Liquefaction Process

Biofuels: A Technical, Economic, and Environmental Comparison

Quantification of fructans in cereal‐based bioethanol stillage based on a simplified analytical method

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