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Processes
Special Issues
Lignocellulose Pretreatment and Utilization
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Lignocellulose Pretreatment and Utilization

A special issue of Processes (ISSN 2227-9717). This special issue belongs to the section "Environmental and Green Processes".

Deadline for manuscript submissions: closed (30 April 2022) | Viewed by 7065

Special Issue Editors

Prof. Dr. Tiancheng Mu

E-Mail Website
Guest Editor
Department of Chemistry, Renmin University of China, Beijing 100872, China
Interests: green chemistry; theoretical chemistry and mechanism; lignocellulosic chemistry; solution chemistry
Special Issues, Collections and Topics in MDPI journals
Prof. Dr. Zhimin Xue

E-Mail Website
Guest Editor
College of Materials Science and Technology, Beijing Forestry University, Beijing 100083, China
Interests: forestry chemical industry; catalysis; green chemistry; biomass conversion and utilization; treatment and separation of forest biomass; design of green catalytic systems; design and application of ionic liquids

Special Issue Information

Dear Colleagues,

Lignocellulose is the most abundant bio-renewable and biodegradable material on Earth. To achieve sustainable development and the goal of carbon neutrality, much research has been carried out on the pretreatment and conversion of lignocellulosic biomass to fuels and chemicals. The most important aspect of the pretreatment of lignicellulose is to overcome recalcitrance bonding. For this Special Issue, we would like to invite well-known researchers in this field to contribute comprehensive articles and reviews on the pretreatment of lignocellulose and the production of biofuel and valuable chemicals from lignocellulosic biomass. Papers on advances in green methods relating to this topic are particularly welcome.

Topics include, but are not limited to, the following:

 

  • The development of multimethods for the dissolution and separation of cellulose, lignin, and semicellulose;
  • The exploration of the structure and interactions of lignocellulose;
  • Various methods to transform lignocellulose to fuels and chemicals, including the transformation of platform compounds;
  • Advanced materials from lignocelluloses.

 

Prof. Dr. Tiancheng Mu
Prof. Zhimin Xue
Guest Editors

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 submissions that pass pre-check are 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. Processes is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2400 CHF (Swiss Francs). 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

  • lignocellulose
  • pretreatment
  • conversion
  • catalysis
  • fuels
  • platform compounds
  • advanced materials
  • ionic liquids
  • deep eutectic solvents

Published Papers (3 papers)

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Research

14 pages, 4379 KiB  
Article
Effect of Ternary Deep Eutectic Solvents on Bagasse Cellulose and Lignin Structure in Low-Temperature Pretreatment
by Yuanxing Yang, Lihong Zhao, Junli Ren and Beihai He
Processes 2022, 10(4), 778; https://0-doi-org.brum.beds.ac.uk/10.3390/pr10040778 - 15 Apr 2022
Cited by 7 | Viewed by 2981
Abstract
Deep eutectic solvents (DESs) have been used for the pretreatment of lignocellulose and showed selective dissolution for different lignocellulosic components. In this study, six new ternary DESs were synthesized on the basis of anhydrous oxalic acid DES by adding alcohol, acid, and deionized [...] Read more.
Deep eutectic solvents (DESs) have been used for the pretreatment of lignocellulose and showed selective dissolution for different lignocellulosic components. In this study, six new ternary DESs were synthesized on the basis of anhydrous oxalic acid DES by adding alcohol, acid, and deionized water, respectively, including choline chloride/anhydrous oxalic acid/ethylene glycol (ChCl-OA-EG), choline chloride/anhydrous oxalic acid/glycerol (ChCl-OA-G), choline chloride/anhydrous oxalic acid/lactic acid (ChCl-OA-LA), choline chloride/anhydrous oxalic acid/malonic acid (ChCl-OA-MA), choline chloride/anhydrous oxalic acid/10% H2O (v/v) (ChCl-OA + 10% H2O), and choline chloride/anhydrous oxalic acid/20% H2O (v/v) (ChCl-OA + 20% H2O). The lignin in bagasse was extracted and separated with these ternary DESs, and Fourier Transform Infrared (FTIR), Scanning electron microscope (SEM), X-ray diffraction (XRD), Two-dimensional Heteronuclear Single Quantum Coherence (2D HSQC), and Thermogravimetric analysis (TG) were used to characterize the molecular structures of lignin and cellulose. The results showed that under the mild reaction condition of cooking at 90 °C for 4 h, all six ternary DESs effectively dissolved hemicellulose in bagasse, the DES ChCl-OA-MA prepared with malonic acid significantly increased the removal of lignin (71.64%) by breaking the β-O-4′ ether bond of lignin molecules, and the crystallinity of cellulose was also significantly improved (67.65%). Full article
(This article belongs to the Special Issue Lignocellulose Pretreatment and Utilization)
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11 pages, 1902 KiB  
Article
Experimental Study on the Crushing Properties of Corn Stalks in Square Bales
by Jie Zhang, Bin Feng, Xiuzhen Yu, Chao Zhao, Hao Li and Za Kan
Processes 2022, 10(1), 168; https://0-doi-org.brum.beds.ac.uk/10.3390/pr10010168 - 16 Jan 2022
Cited by 2 | Viewed by 1955
Abstract
With the development of straw baling mechanization technology, straw is stored in the form of square baling or round baling. At present, hammer mill or the guilt-cutting and rubbing combined mill is widely used to crush square bales of straw. These two kinds [...] Read more.
With the development of straw baling mechanization technology, straw is stored in the form of square baling or round baling. At present, hammer mill or the guilt-cutting and rubbing combined mill is widely used to crush square bales of straw. These two kinds of crushing equipment have disadvantages such as low productivity, large power consumption, and poor crushing effect. This paper aims to study and analyze the crushing characteristics of square baled straw after unbaling, and lay a theoretical foundation for the later research and development of a special square baled straw crusher with high productivity, low power consumption, good crushing effect, and the simulation of the square baled corn straw crushing process. For this purpose, this study carried out a corn bale crushing experiment on the Instron 8801 fatigue test machine, and studied the effects of blade angle, water content and loading speed on corn bale crushing force through the response surface method. Test results showed that the crushing process includes the compression stage and shearing stage; in terms of single factor effect, with the increase in water content and blade angle, the crushing force of the corn bale increased, but the loading speed had no significant effect on the crushing force of the corn bale. In terms of interaction effect, there was interaction effect between moisture content and blade inclination angle, when moisture content was 10%, with the increase in blade inclination angle, the incremental speed of the crushing force also increased gradually. When the blade inclination angle was 10°, with the increase in moisture content, the incremental speed of the crushing force also increased, and the interaction effect of them jointly acted on the crushing force of the corn bales. Full article
(This article belongs to the Special Issue Lignocellulose Pretreatment and Utilization)
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10 pages, 661 KiB  
Article
Influence of the Preliminary Storage on Methane Yield of Anaerobic Digestion of the Organic Fraction of Municipal Solid Waste
by Domenica Pangallo, Altea Pedullà, Demetrio Antonio Zema and Paolo S. Calabrò
Processes 2021, 9(11), 2017; https://0-doi-org.brum.beds.ac.uk/10.3390/pr9112017 - 11 Nov 2021
Cited by 3 | Viewed by 1445
Abstract
Anaerobic digestion (AD) is a suitable management option for the energy valorization of many wastes, including the organic fraction of municipal solid waste (OFMSW). However, in some cases, long storage after the separate collection of this waste is required for management reasons, especially [...] Read more.
Anaerobic digestion (AD) is a suitable management option for the energy valorization of many wastes, including the organic fraction of municipal solid waste (OFMSW). However, in some cases, long storage after the separate collection of this waste is required for management reasons, especially when the amount of waste to be treated temporarily exceeds the capacity of available AD plants. This study evaluates the biochemical methane potential (BMP) of the OFMSW after preliminary storage of 2, 6, and 10 days, in order to assess whether they are still suitable for AD or not. Moreover, the accuracy of three kinetic models (first order, Gompertz, and logistic models) in estimating the methane yield of stored OFMSW is tested. The resulting methane yield was between about 500 and 650 NmL·gVS−1 and slightly increased with the increase of the storage time after collection. Overall, this study has demonstrated that storage of OFMSW, when the collected amount of solid waste exceeds the treatment capacity of AD plants, a storage time up to 10 days does not impact the methane yield of the process. Full article
(This article belongs to the Special Issue Lignocellulose Pretreatment and Utilization)
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