Thermochemical liquefaction of agricultural and forestry wastes into biofuels and chemicals from circular economy perspectives

Song, Chengfang; Zhang, Cheng; Zhang, Shicheng; Lin, Hui; Yrjälä, Kim; Ramakrishnan, Muthusamy; Du, Yanqiang; Zhang, Yan; Zheng, Huabao; Barceló, Damià

doi:10.1016/j.scitotenv.2020.141972

Cited by 68 publications

(25 citation statements)

References 146 publications

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“…These types of fuel have a certain Gorenje temperature and specific heat of combustion [11][12] (see table 1). Their effective use for energy production is an urgent task of the forest complex at the present time [13][14]. The application of the developed mathematical models will allow you to design a DC for a specific type of fuel, which will allow you to get the maximum efficiency.…”

Section: Discussionmentioning

confidence: 99%

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Mathematical model of the mechanism of the "alpha" type Stirling engine for operation in the timber industry complex

et al. 2020

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This article discusses the multi-criteria parameterization of the crank-slider group of the Stirling engine type "alpha". The dependences of the displacement of the piston and the displacer are obtained, taking into account a number of variable geometric parameters. The resulting equation of movement of the piston from displacement of the propellant is composed of a crankshaft angle, which will allow to obtain a numerical model simulation of the crank-slider group that will significantly reduce the time of numerical calculations. The dependence of the torque on the crankshaft with known pressures on the piston and the displacer is obtained. This study will eventually allow us to determine the optimal parameters of the designed steering engine, depending on the power and operating temperatures. This will allow us to design an engine for use in the timber industry (use of logging and woodworking waste as fuel). Effective use for energy generation is an urgent task of the forest complex. Currently, obtained torque equation will allow us to study the working process of the engine when solving the gas-dynamic problem of cyclic flow of gas from the cavity of the piston cylinder to the cavity of the displacer cylinder and back.

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Section: Discussionmentioning

confidence: 99%

“…The diagram is shown in figure 2. Then, the angle between the cylinder axes: (14) Converting the system (11): (15) Next, you need to define the form of the equation X(Y). To do this, define the coordinate of the horizontal piston X in the form (see figure 2):…”

Section: Itse-2020mentioning

confidence: 99%

Mathematical model of the mechanism of the "alpha" type Stirling engine for operation in the timber industry complex

et al. 2020

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“…Finally, hemicellulose of herbaceous plants mainly contains xylan, which can be converted into solubilized monosaccharides (xylose) by hydrothermal liquefaction and upgraded to liquid fuels, platform compounds and valuable chemicals such as furfural, D-xylulose, glyceraldehyde, lactic acid, etc. [36]. The wood is characterized by 49% of Carbon [44], which makes it exploitable by both thermal and thermochemical processes to produce heat and power, as well as liquid and gaseous fuels, respectively.…”

Section: Chemical Compositions and General Propertiesmentioning

confidence: 99%

Analysis of the EU Secondary Biomass Availability and Conversion Processes to Produce Advanced Biofuels: Use of Existing Databases for Assessing a Metric Evaluation for the 2025 Perspective

Gruttola

Borello

2021

Sustainability

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Nowadays in Europe, the production of advanced biofuels represents a very important objective, given the strong interest in increasing sustainability throughout the transport sector. Production and availability of advanced biofuels are cited as a relevant issue in the most important international actions, such as the Sustainable Development Goals in UN Agenda 2030, EU RED II, and EU Mission Innovation 4, to cite a few of them. However, an important aspect to be considered is the prediction of feedstocks availability to produce advanced biofuel. The first aim of this paper is to assess the availability of European agricultural residues, forestry residues, and biogenic wastes in 2025. The data were collected through a deep review on open FAOSTAT and EUROSTAT databases and then elaborated by the authors. The analysis focuses on the fraction of feedstocks that can be used for advanced biofuels production, i.e., incorporating specific information on sustainable management practices, competitive uses, and environmental risks to preserve soil quality. An autoregressive model is developed to predict future availability, while also considering corrections due to the current pandemic. The results suggest that several European countries could produce enough sustainable advanced feedstocks to meet the European binding target. In particular, France, Germany, and Romania will have high production of agricultural feedstocks; while Austria, Finland, and Sweden will be rich of forestry residues; finally, Italy, France, and United Kingdom will have the highest availability of wastes. To complete the picture, a proper metric is introduced, aiming at generating a technology ranking of the examined alternative fuels, in terms of several relevant parameters such as biomass availability, Technology Readiness Level (TRL), quality of the biofuel, and costs. This analysis allows us to compare advanced biofuels and first-generation biofuels, whose utilization can impact the food market, while also contributing to the increase in the indirect land use change (ILUC). Although the first-generation biofuels remain the most common choice, the renewable (or green) diesel, pyrolysis bio-oil, green jet fuel, and the second-generation bioethanol are promising for different applications in the transport sector. Hydrotreated Vegetable Oils (HVO), Hydroprocessed Esters and Fatty Acids (HEFA), Anaerobic Digestion (AD), and transesterification from vegetable oil represent the most widespread and mature technologies. Thus, it seems mandatory that the transport sector will rely more and more on such fuels in the future. For such reason, a specific support for advanced biomass collection, as well as specific programs for conversion technologies development, are strongly suggested.

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“…Circular agriculture emphasizes the material efficiency and energy conversion efficiency of the agricultural system, the effective control of harmful substances and greenhouse gas emissions, and the innovation of agricultural economic development models [11]. Sustainability is a key issue coined in the circular economy [51]. According to [10], the agricultural wastes are analyzed from three aspects: social impact, environmental impact, and economic impact.…”

Section: Construction Of the Evaluation Index Systemmentioning

confidence: 99%

Evaluation of China’s Circular Agriculture Performance and Analysis of the Driving Factors

Ying-jun

Xia

et al. 2021

Sustainability

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Along with industry upgrading and urbanization, the agricultural industry in China has been experiencing a stage of rapid development, on the bright side. On the other side, ecological environment deterioration and resource scarcity have become prevalent. Called by the current situation, circular agriculture arises as a direction for the industry to achieve sustainable development. This study develops an evaluation indicator system for circular agriculture using an entropy method, and evaluates factors that could drive the Chinese agricultural industry to achieve better performance. We employ the method using provincial data collected from the province of Henan, in which around 10% of the total grain in China is produced. It was found that agricultural technology and water resources per capita are positively related to circular performance in agriculture. In contrast, urbanization and arable land per capita are negatively related to circular performance. This article provides support to the government in policy-making related to the improvement of circular agricultural performance.

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Thermochemical liquefaction of agricultural and forestry wastes into biofuels and chemicals from circular economy perspectives

Cited by 68 publications

References 146 publications

Mathematical model of the mechanism of the "alpha" type Stirling engine for operation in the timber industry complex

Mathematical model of the mechanism of the "alpha" type Stirling engine for operation in the timber industry complex

Analysis of the EU Secondary Biomass Availability and Conversion Processes to Produce Advanced Biofuels: Use of Existing Databases for Assessing a Metric Evaluation for the 2025 Perspective

Evaluation of China’s Circular Agriculture Performance and Analysis of the Driving Factors

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