Special Issue "Advances in Bio-Fuels Production"

A special issue of ChemEngineering (ISSN 2305-7084).

Deadline for manuscript submissions: 24 October 2018

Special Issue Editor

Guest Editor
Prof. Yu-Hong Wei

Yuan Ze University, Graduate School of Biotechnology and Bioengineering, Taoyuan, Taiwan
Website | E-Mail
Interests: Bio-fuels production; Enzyme and microbial technology; Bio-based products development; Feedstocks and processes development; Fermentation technology; Bioreactor design

Special Issue Information

Dear Colleagues,

Continued industrialization and population growth have increased annual energy consumption. Increasing fossil fuel prices and greenhouse gases have motivated the research and development of renewable resources in many countries. Biofuel is a type of energy derived from renewable plant and animal materials. In general, biofuels are most useful in liquid or gas form because they are easier to transport, deliver and burn cleanly. Examples of biofuels include bio-alcohols (such as bioethanol, biobutanol), biodiesel and biogas (such as biomethane, biohydrogen). In this Special Issue of Chemengineering, we want to offer a platform for high-quality publications on these various aspects of bio-fuels production. Manuscripts can be submitted until the deadline. All papers will be peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles, as well as short communications are invited.

Prof. Yu-Hong Wei
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All papers will be peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. ChemEngineering is an international peer-reviewed open access quarterly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) is waived for well-prepared manuscripts submitted to this issue. Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • Bio-fuels production
  • Bioreactor design for the production of bio-fuels
  • Pretreatment of lignocellulosic feedstocks
  • Cellulose biosynthesis
  • Lignin biosynthesis
  • Alteration of lignin composition New biofuel crops

Published Papers (2 papers)

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Research

Open AccessArticle UV-Vis Spectroscopy and Chemometrics for the Monitoring of Organosolv Pretreatments
ChemEngineering 2018, 2(4), 45; https://doi.org/10.3390/chemengineering2040045
Received: 15 August 2018 / Revised: 2 September 2018 / Accepted: 10 September 2018 / Published: 21 September 2018
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Abstract
Lignocellulosic agricultural side products like wheat straw are widely seen as an important contribution to a sustainable future economy. However, the optimization of biorefinery processes, especially the pretreatment step, is crucial for an economically viable biorefinery. The monitoring of this pretreatment process in
[...] Read more.
Lignocellulosic agricultural side products like wheat straw are widely seen as an important contribution to a sustainable future economy. However, the optimization of biorefinery processes, especially the pretreatment step, is crucial for an economically viable biorefinery. The monitoring of this pretreatment process in terms of delignification and the generation of the fermentation inhibitors acetic acid, furfural, and hydroxymethylfurfural (HMF) is essential in order to adapt the process parameters for a desired outcome and an economical operation. However, traditional wet chemistry methods are time-consuming and not suitable for on-line process monitoring. Therefore, UV-Vis spectroscopy in combination with partial least-squares regression was used for the determination of the concentrations of lignin, acetic acid, furfural, and HMF. Five different data blocks with increasing amounts of impurities were investigated to evaluate the influence of the inevitable impurities on the calibration models. Lignin showed a good prediction accuracy with 95% tolerance intervals between ±0.46 to ±1.6 mg/L for concentrations up to 30 mg/L. Also, the other components could be predicted with a sufficient accuracy for on-line process monitoring. A satisfactory calibration can be obtained with 10 to 20 reference samples valid at process temperatures between 160 °C and 180 °C. Full article
(This article belongs to the Special Issue Advances in Bio-Fuels Production)
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Open AccessArticle Alternative of Biogas Injection into the Danish Gas Grid System—A Study from Demand Perspective
ChemEngineering 2018, 2(3), 43; https://doi.org/10.3390/chemengineering2030043
Received: 8 August 2018 / Revised: 27 August 2018 / Accepted: 3 September 2018 / Published: 5 September 2018
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Abstract
The Danish government has set an ambitious target to achieve 100% fossil independence across all energy sectors, which demands optimum utilization of renewable energy sources, such as wind and biogas, by 2050. Biogas production has increased, and the upgrading of biogas offers a
[...] Read more.
The Danish government has set an ambitious target to achieve 100% fossil independence across all energy sectors, which demands optimum utilization of renewable energy sources, such as wind and biogas, by 2050. Biogas production has increased, and the upgrading of biogas offers a broad range of applications, such as transportation, and gas grid injection for downstream utilization. The biogas has to meet natural gas quality prior to injection into the gas grid system. The investment costs of the gas grid, upgrading cost, and gas compression costs are the major challenges for integrating the biogas into the existing gas infrastructure. In this investigation, the Wobbe index (WI) for raw biogas and upgraded biogas was measured to evaluate the scenario for biogas injection into the gas grid system. It was found that raw biogas has to improve its WI from 28.3 MJ/m3(n) to a minimum of 50.76 MJ/m3(n) via upgrading, and compressed to 40 bar system, to supply the gas grid system for trading. Then, yearly gas consumption by larger gas consumers was studied to evaluate the alternative approach of biogas utilization to save upgrading and compression costs for gas grid injection. Full article
(This article belongs to the Special Issue Advances in Bio-Fuels Production)
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