TY  - CHAP
A1  - Duwe, A.
A1  - Tippkötter, Nils
A1  - Ulber, R.
T1  - Lignocellulose-Biorefinery: Ethanol-Focused
T2  - Biorefineries
N2  - The development prospects of the world markets for petroleum and other liquid fuels are diverse and partly contradictory. However, comprehensive changes for the energy supply of the future are essential. Notwithstanding the fact that there are still very large deposits of energy resources from a geological point of view, the finite nature of conventional oil reserves is indisputable. To reduce our dependence on oil, the EU, the USA, and other major economic zones rely on energy diversification. For this purpose, alternative materials and technologies are being sought, and is most obvious in the transport sector. The objective is to progressively replace fossil fuels with renewable and more sustainable fuels. In this respect, biofuels have a pre-eminent position in terms of their capability of blending with fossil fuels and being usable in existing cars without substantial modification. Ethanol can be considered as the primary renewable liquid fuel. In this chapter enzymes, micro-organisms, and processes for ethanol production based on renewable resources are described.
KW  - Bioethanol
KW  - Biorefinery
KW  - Lignocellulose feedstook
Y1  - 2018
U6  - http://dx.doi.org/10.1007/10_2016_72
N1  - Part of the Advances in Biochemical Engineering/Biotechnology book series (ABE,volume 166)
SP  - 177
EP  - 215
PB  - Springer
CY  - Cham
ER  - 
TY  - JOUR
A1  - Tippkötter, Nils
A1  - Roth, Jasmine
T1  - Purified Butanol from Lignocellulose – Solvent‐Impregnated Resins for an Integrated Selective Removal
JF  - Chemie Ingenieur Technik
N2  - In traditional microbial biobutanol production, the solvent must be recovered during fermentation process for a sufficient space-time yield. Thermal separation is not feasible due to the boiling point of n-butanol. As an integrated and selective solid-liquid separation alternative, solvent impregnated resins (SIRs) were applied. Two polymeric resins were evaluated and an extractant screening was conducted. Vacuum application with vapor collection in fixed-bed column as bioreactor bypass was successfully implemented as butanol desorption step. In course of further increasing process economics, fermentation with renewable lignocellulosic substrates was conducted using Clostridium acetobutylicum. Utilization of SIR was shown to be a potential strategy for solvent removal from fermentation broth, while application of a bypass column allows for product removal and recovery at once.
KW  - Biofuel
KW  - Biorefinery
KW  - Butanol
KW  - Clostridium acetobutylicum
KW  - Lignocellulose
Y1  - 2020
U6  - http://dx.doi.org/10.1002/cite.202000200
SN  - 1522-2640
VL  - 92
IS  - 11
SP  - 1741
EP  - 1751
PB  - Wiley-VCH
CY  - Weinheim
ER  -