Improvement of corn stover fuel properties via hydrothermal carbonization combined with surfactant

Ren, Ting X; Sun, Youhong; Wu, Yujian; Fan, Xudong; Wang, Jiamin; Cheng, Shuchao; Jia, Zhiwen; Jiang, Enchen; Xu, Xinhua

doi:10.1186/s13068-019-1581-x

Cited by 16 publications

(6 citation statements)

References 40 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…There is recent development in production of activated carbon from black liquor [10]. In this development, the different methods used for the production of activated carbon are hydrothermal, pyrolysis and hydrodeoxygenation process [10][11][12][13][14].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Synthesis of activated carbon from black liquor for the application of supercapacitor

Palanisamy¹,

Kandasamy²,

Thangmuthu³

et al. 2021

J Mater Sci: Mater Electron

View full text Add to dashboard Cite

In this present study, the black liquor carbonization has been investigated by hydrothermal process. The activated carbon from the carbonization of black liquor (AC-BL) and biomass based activated carbon from citrus sinensis avedos (AC-OP) has been investigated for the suitability in supercapacitor application. The study have analysed in electrochemical measurement of both AC-BL and AC-OP in electrochemical station. The role of stable hydroxyl molecules on the surface of carbon material has been observed and its effective conductivity is studied. The superior performance of AC-OP derived nano porous carbon has fast ionic and electronic diffusion of the electrolyte in and out of the pores during charging and discharging due to high surface area. AC-BL exhibited with an EDLC mechanism, but AC-OP shows the pseudo capacitance property. The porous structure and oxygen doping characteristics in AC-BL can in uence the potential electrode material for applications in the eld of supercapacitors. With the help of this movement, electronic conductivity of the AC-BL has been increased. In general, electrochemical stability of the EDLC is far better than pseudo capacitor. From the EIS analysis, ESR value is very small for AC-BL (60 Ω), when compared to AC-OP (155 Ω). To conclude that the EIS results of low conductivity by AC-BL has potential to be future supercapacitor with enhanced treatment in carbonization techniques.

show abstract

Section: Introductionmentioning

confidence: 99%

“…In carbonization process, organic compounds converted into saturated carbons as carbon compounds. The process of carbon bonds at high pressure and temperature under closed system at 160 -300 o C can produces activated carbon from the sources of rice husk, cotton seed and coconut shell [11][12][13][14].…”

Section: Introductionmentioning

confidence: 99%

Synthesis of activated carbon from black liquor for the application of supercapacitor

Palanisamy¹,

Kandasamy²,

Thangmuthu³

et al. 2021

J Mater Sci: Mater Electron

View full text Add to dashboard Cite

show abstract

“…The hydrothermal carbonization of lignin-cellulose-base materials including agricultural waste residues, such as corn Stover, with hot compressed H2O in the sub-critical is a thermo-chemical process of great potential [6][7][8][9][10][11][12][13][14][15][16][17], and the literature reports some studies on the hydrothermal carbonization of corn residues [5-6, 11, 14, 16-27], such as Stover [5-6, 14, 17-19, 21-25], corn Stalk [20], corn Silage [11], and until corn Stover activated with surfactant (Tween80, Span80, sodium dodecyl-benzenesulfonate, sodium lignosulfonate, PEG 400) [26], and corn Stover activated with KOH [27].…”

Section: Introductionmentioning

confidence: 99%

Effect of Process Conditions on Hydro-Char Characteristics and Chemical Composition of Aqueous and Gaseous Products by Hydrothermal Processing of Corn Stover with Hot Compressed H<sub>2</sub>O: Structural Evolution of Hydro-Char and Kinetics of Corn Stover Decomposition

Teribele¹,

Costa²,

Silva³

et al. 2022

Preprint

View full text Add to dashboard Cite

In this work, the effect of reaction time and biomass-to-H2O ratio on the structural evolution of hydro-char and kinetic of by hydrothermal processing of corn Stover with hot compressed H2O, have been systematically investigated. The experiments were carried out at 250 °C, heating rate of 2.0 °C/min, biomass-to-H2O ratio of 1:10, and reaction times of 60, 120, and 240 minutes, and at 250 °C, 240 minutes, heating rate of 2.0 °C/min, and biomass-to-H2O water ratio of 1:10, 1:15, and 1:20, using a pilot scale stirred tank reactor of 5 gallon. The characterization of solid phase products performed by thermo-gravimetric analysis, scanning electron microscope, energy dispersive X-ray spectroscopy, X-ray diffraction, and elemental analysis (C, N, H, S). The physical-chemistry properties of solid phase analyzed in terms of dry matter (DM), total organic content (TOC), and ash. The yields of solid and gas phases decrease linearly with decreasing biomass-to-H2O ratio, while that of liquid phases increases linearly. For constant biomass-to-H2O ratio, the yields of solid, liquid, and gaseous reaction products varied between 52.97 and 35.82% (wt.), 44.84 and 54.59% (wt.), and 2.19 and 9.58% (wt.), respectively. The yield of solids decreases exponentially by decreasing the reaction time, while the yields of liquid and gas phases increase exponentially. For constant biomass-to-H2O ratio, TG/DTG curves shows that reaction time of 60 minutes was not enough to carbonize corn Stover. For constant reaction time, TG/DTG curves shows that increasing the H2O-to-biomass ratio worse the carbonization of corn Stover. For constant biomass-to-H2O ratio, the SEM images show the main morphological structure of the corn Stover remains practically unchanged, while for constant reaction time, SEM images show that plant microstructure retains part of its original morphology, demonstrating that a decrease on biomass-to-H2O ratio worse the carbonization of corn Stover. For constant biomass-to-H2O ratio, the EDX analysis shows that the carbon content in hydro-char increases with reaction time, while for constant reaction time, the carbon content decreases with increasing biomass-to-H2O ratio. The kinetic of corn Stover degradation was correlated with a pseudo-first order exponential model, exhibiting a root-mean-square error (r2) of 1.000, demonstrating that degradation kinetics of corn Stover with hot compressed H2O, expressed as hydro-char formation, is well described by an exponential decay kinetics.

show abstract

“…% gas consisting mainly of CO 2 ; the rest is process liquid [20][21][22][23][24]. The energy-dense solid hydrochar can be pelletized to improve the mass and energy density of the feedstock and reduce the cost of transportation, handling and storage [25][26][27].…”

Section: Introductionmentioning

confidence: 99%

Integration of Air Classification and Hydrothermal Carbonization to Enhance Energy Recovery of Corn Stover

et al. 2021

View full text Add to dashboard Cite

Air classification (AC) is a cost-effective technology that separates the energy-dense light ash fraction (LAF) from the inorganic-rich high ash fraction (HAF) of corn stover. HAF could be upgraded into energy-dense solid fuel by hydrothermal carbonization (HTC). However, HTC is a high-temperature, high-pressure process, which requires additional energy to operate. In this study, three different scenarios (i.e., AC only, HTC only, and integrated AC–HTC) were investigated for the energy recovery of corn stover. AC was performed on corn stover at an 8 Hz fan speed, which yielded 84.4 wt. % LAF, 12.8 wt. % HAF, and 2.8 wt. % below screen particles. About 27 wt. % ash was reduced from LAF by the AC process. Furthermore, HTC was performed on raw corn stover and the HAF of corn stover at 200, 230, and 260 °C for 30 min. To evaluate energy recovery, solid products were characterized in terms of mass yield, ash yield, ultimate analysis, proximate analyses, and higher heating value (HHV). The results showed that the energy density was increased with the increase in HTC temperature, meanwhile the mass yield and ash yield were decreased with the increase in HTC temperature. Proximate analysis showed that fixed carbon increased 18 wt. % for original char and 27 wt. % for HAF char at 260 °C, compared to their respective feedstocks. Finally, the hydrochar resulting from HAF was mixed with LAF and pelletized at 180 bar and 90 °C to densify the energy content. An energy balance of the integrated AC–HTC process was performed, and the results shows that integrated AC with HTC performed at 230 °C resulted in an additional 800 MJ/ton of energy recovery compared to the AC-only scenario.

show abstract

Improvement of corn stover fuel properties via hydrothermal carbonization combined with surfactant

Cited by 16 publications

References 40 publications

Synthesis of activated carbon from black liquor for the application of supercapacitor

Synthesis of activated carbon from black liquor for the application of supercapacitor

Effect of Process Conditions on Hydro-Char Characteristics and Chemical Composition of Aqueous and Gaseous Products by Hydrothermal Processing of Corn Stover with Hot Compressed H<sub>2</sub>O: Structural Evolution of Hydro-Char and Kinetics of Corn Stover Decomposition

Integration of Air Classification and Hydrothermal Carbonization to Enhance Energy Recovery of Corn Stover

Contact Info

Product

Resources

About