Version 1
: Received: 13 December 2018 / Approved: 14 December 2018 / Online: 14 December 2018 (09:44:23 CET)
How to cite:
LU, Y.; Liu, R.S.; Thomsen, J.K. One of the 2G Bioethanol Queries: Straw Volume. Preprints2018, 2018120171. https://doi.org/10.20944/preprints201812.0171.v1
LU, Y.; Liu, R.S.; Thomsen, J.K. One of the 2G Bioethanol Queries: Straw Volume. Preprints 2018, 2018120171. https://doi.org/10.20944/preprints201812.0171.v1
LU, Y.; Liu, R.S.; Thomsen, J.K. One of the 2G Bioethanol Queries: Straw Volume. Preprints2018, 2018120171. https://doi.org/10.20944/preprints201812.0171.v1
APA Style
LU, Y., Liu, R.S., & Thomsen, J.K. (2018). One of the 2G Bioethanol Queries: Straw Volume. Preprints. https://doi.org/10.20944/preprints201812.0171.v1
Chicago/Turabian Style
LU, Y., Robert S.P. Liu and Jens Kirk Thomsen. 2018 "One of the 2G Bioethanol Queries: Straw Volume" Preprints. https://doi.org/10.20944/preprints201812.0171.v1
Abstract
There are some controversies about 2G bioethanol and it is in need of a reliable test data in order to make a further analysis and proof. In collecting basic data from three classes of typical raw materials, such as wheat, maize stalk juice, and straw, it was found that 4.32 tons straw or 3.358 tons wheat is needed to produce 1-ton bioethanol. Using the coefficient of variation calculation and analysis method, it is able to obtain the C.V. value of straw fermentation efficiency 0.08932<0.15, indicating the fermentation technology and process of 2G bioethanol is already quite mature and reliable, without risk, and also with a raw material cost advantage. There is a problem in that the C.V. value of straw volume is 1.2648>0.95, indicating 2G bioethanol is in an extremely high-risk area. Using the straw volume calculation method, building and its costs – capital expenditure of 2G bioethanol plant is approximately seven times that of a wheat ethanol plant. This should be some of the important reasons why it is noncompetitive, extremely high price, and requiring government subsidies. Straw volume data study has caused the 2G bioethanol plant to require more cement, steel, equipment, and other materials. Thus, there are ample reasons to question the CO2 emissions and its carbon footprint of 2G bioethanol plant. Actually, the volume is not the only existing problem, it is necessary to re-evaluate and discuss the definition of 2G bioethanol and its future.
Keywords
2G bioethanol, Straw, Raw material volume, Question
Subject
Engineering, Energy and Fuel Technology
Copyright:
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
