Mechanism and optimization for plasma electrolytic liquefaction of sawdust

Xi, Dengke; Zhou, Rusen; Zhou, Renwu; Zhang, Xianhui; Ye, Liyi; Li, Jiangwei; Jiang, Congcong; Chen, Qiang; Sun, Guan; Liu, Qing; Yang, Sui

doi:10.1016/j.biortech.2017.05.132

Cited by 23 publications

(12 citation statements)

References 33 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In the phase U3 (600-700 V), the electric field and the kinetic energy of the ions in the solution are significantly enhanced, resulting in an obvious increase in the solution temperature and the formation of an arc discharge near the cathode followed by the solution boiling. Eventually, the gaseous products are generated by the boiling surrounded the cathode, which causes the current drop sharply from 0.22 A to 0.13 A. Xi et al also reported the dependence of the current and applied voltage [43,44]. It showed that there were also the increasing and decreasing stage of the current on the studied voltage range but there was no constant current range.…”

Section: A Plasma Liquefaction Characteristicsmentioning

confidence: 99%

See 1 more Smart Citation

The Optimization of Plasma Catalytic Liquefaction Technique for the Conversion of Sawdust Into Value-Added Chemicals

Cai

Liu

et al. 2020

IEEE Access

View full text Add to dashboard Cite

Non-thermal plasma is an alternative technology of exploiting biomass for efficient production of value added energy carriers. In this study, plasma catalytic liquefaction (PCL) system is successfully developed to achieve rapid and efficient liquefaction of sawdust in the presence of co-solvent polyethylene glycol 200 (PEG 200) and glycerin as well as the acid catalyst H 2 SO 4. The influences of different operating factors such as the catalyst concentration, reaction time, molar ratio of PEG 200 and glycerin and the power supply are investigated in terms of the liquefaction yield and solution temperature, while the roles of the applied voltage and the duty cycle of power supply in the PCL process are discussed in detail. Experimental results show that the sawdust could be completely liquefied into crude bio-oil with a high heating value (HHV) of 19.18 MJ/kg in the mixture containing sawdust and solvent in a ratio of 1/7, and 1 wt.% catalyst H 2 SO 4. Increasing the applied voltage and duty cycle are more efficient giving higher yield of liquid products. Based on the analysis of the processing conditions, suggested that the enhanced performance of the PCL process is linked to the superiority of heating that induced by electric field and the presence of quantities reactive species during the plasma discharge. The physiochemical characteristics of the biomass sample and the liquefied products are interpreted by using elemental analysis, thermogravimetric analysis, Fourier transform infrared spectroscopy (FTIR) and the identities and concentration of the liquid products are determined by gas chromatography-mass spectrometry (GC-MS). INDEX TERMS Non-thermal plasma, plasma catalytic liquefaction, biomass utilization, bio-oil production.

show abstract

Section: A Plasma Liquefaction Characteristicsmentioning

confidence: 99%

“…Similar conclusions are supported by Xi et.al, who performed the liquefaction of sawdust by using plasma method. They also indicated that the discharge phenomenon is much tender when using PEG 200 as the liquefacient alone compared with glycerin [44].…”

Section: Optimization Of Solvent Ratio On the Pcl Processmentioning

confidence: 99%

The Optimization of Plasma Catalytic Liquefaction Technique for the Conversion of Sawdust Into Value-Added Chemicals

Cai

Liu

et al. 2020

IEEE Access

View full text Add to dashboard Cite

show abstract

“…Overall, plasma electrolysis provides a new method for biomass liquefaction with low energy consumption. [186]…”

Section: Lignin Fractionation From Biomassmentioning

confidence: 99%

“…Thus, biomass fractionation was accomplished rapidly as compared with other liquefaction methods. Overall, plasma electrolysis provides a new method for biomass liquefaction with low energy consumption …”

Section: Lignin Fractionation By Electrochemical Processmentioning

confidence: 99%

Electrochemical Lignin Conversion

et al. 2020

View full text Add to dashboard Cite

Lignin is the largest source of renewable aromatic compounds, making the recovery of aromatic compounds from this material a significant scientific goal. Recently, many studies have reported on lignin depolymerization and upgrading strategies. Electrochemical approaches are considered to be low cost, reagent free, and environmentally friendly, and can be carried out under mild reaction conditions. In this Review, different electrochemical lignin conversion strategies, including electrooxidation, electroreduction, hybrid electro‐oxidation and reduction, and combinations of electrochemical and other processes (e. g., biological, solar) for lignin depolymerization and upgrading are discussed in detail. In addition to lignin conversion, electrochemical lignin fractionation from biomass and black liquor is also briefly discussed. Finally, the outlook and challenges for electrochemical lignin conversion are presented.

show abstract

“…Steinberg (2006) used plasma technology to convert fossil fuels and biomass into electricity, hydrogen, and liquid fuels. Recently, Xi et al (2017) and Jiang et al (2019) combined plasma electrolysis in the presence of sulfuric acid as the catalyst with traditional polyethylene glycol 200 (PEG 200) and glycerol co-solvent liquefaction to achieve fast liquefaction of biomass sawdust. The results show that the plasma electrolysis liquefaction process causes sawdust to decompose into small molecules in liquid and gas forms, which is directly related to the changes in solution resistance parameters in the plasma electrolysis liquefaction process.…”

Section: Introductionmentioning

confidence: 99%

Plasma-catalyzed liquefaction of wood-based biomass

Sun

Xin

et al. 2020

BioRes

View full text Add to dashboard Cite

Biomass resources in nature produce a large amount of waste resources (agricultural residues, wood waste, etc.) during agricultural and forestry production processes. Therefore, the effective utilization of these solid biomass waste resources has attracted widespread interest. In this paper, a pulsed discharge plasma technology was used to perform catalytic liquefaction experiments on solid biomass sawdust at room temperature and atmospheric pressure, and the reaction parameters such as the solid:liquid ratio, liquefaction solvent ratio, and catalyst ratio were optimized. The results showed that the plasma technology achieved a higher liquefaction yield; the optimized reaction parameters were: a solid:liquid ratio of 1:23.4, a liquefaction solvent polyethylene glycol (PEG) / glycerol (GL) ratio of 25:15 (V:V), and an acid volume fraction of 0.188%. In addition, the characteristics of the products of the liquefaction reaction were analyzed and discussed. The liquid products were mainly composed of small molecules. The experiment established that the liquefaction of solid sawdust by high-voltage pulsed discharge plasma can be an effective technical method.

show abstract

Mechanism and optimization for plasma electrolytic liquefaction of sawdust

Cited by 23 publications

References 33 publications

The Optimization of Plasma Catalytic Liquefaction Technique for the Conversion of Sawdust Into Value-Added Chemicals

The Optimization of Plasma Catalytic Liquefaction Technique for the Conversion of Sawdust Into Value-Added Chemicals

Electrochemical Lignin Conversion

Plasma-catalyzed liquefaction of wood-based biomass

Contact Info

Product

Resources

About