Characteristics and pyrolysis dynamic behaviors of hydrothermally treated micro crystalline cellulose

Kong, Lingzhao; Miao, Pengjie; Qin, Jianguang

doi:10.1016/j.jaap.2012.11.019

Cited by 25 publications

(13 citation statements)

References 28 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The initial weight loss before 100 °C was caused by moisture vaporization. Thereafter, the second weight loss began from 180 °C with a high mass-loss rate, which was similar to a previoius report . Besides, the pyrolysis process became different among the three samples, including the maximum loss rate at around 300 °C from corncob and banana stalk, and a lesser weight loss at 420 °C of banana stalk.…”

Section: Resultssupporting

confidence: 86%

“…Thereafter, the second weight loss began from 180 °C with a high mass-loss rate, which was similar to a previoius report. 38 Besides, the pyrolysis process became different among the three samples, including the maximum loss rate at around 300 °C from corncob and banana stalk, and a lesser weight loss at 420 °C of banana stalk. Nevertheless, the maximum loss rate of pomelo peel was found at 210 °C due to its abundant pectin, which decomposed around 230 °C.…”

Section: Journal Of Agricultural and Food Chemistrymentioning

confidence: 96%

See 1 more Smart Citation

Sorption/Desorption Behavior and Mechanism of NH₄⁺by Biochar as a Nitrogen Fertilizer Sustained-Release Material

Cai

Liu

et al. 2016

J. Agric. Food Chem.

100

View full text Add to dashboard Cite

Biochar, the pyrolysis product of biomass material with limited oxygen, has the potential to increase crop production and sustained-release fertilizer, but the understanding of the reason for improving soil fertility is insufficient, especially the behavior and mechanism of ammonium sulfate. In this study, the sorption/desorption effect of NH4(+) by biochar deriving from common agricultural wastes under different preparation temperatures from 200 to 500 °C was studied and its mechanism was discussed. The results showed that biochar displayed excellent retention ability in holding NH4(+) above 90% after 21 days under 200 °C preparation temperature, and it can be deduced that the oxygen functional groups, such as carboxyl and keto group, played the primary role in adsorbing NH4(+) due to hydrogen bonding and electrostatic interaction. The sorption/desorption effect and mechanism were studied for providing an optional way to dispose of agricultural residues into biochar as a nitrogen fertilizer sustained-release material under suitable preparation temperature.

show abstract

Section: Resultssupporting

confidence: 86%

Section: Journal Of Agricultural and Food Chemistrymentioning

confidence: 96%

Sorption/Desorption Behavior and Mechanism of NH₄⁺by Biochar as a Nitrogen Fertilizer Sustained-Release Material

Cai

Liu

et al. 2016

J. Agric. Food Chem.

100

View full text Add to dashboard Cite

show abstract

“…At the same time, peaks of polymeric product were also shown in the FTIR spectra at 1600 and 1700 cm −1 . These results proved that the biochar was composed by the conserved lignin and polymeric products produced in the HTC process [22].…”

Section: Characterization Of Reed and Biocharsupporting

confidence: 53%

“…These results indicated that the biochar had a high degree of polymerization oligomers with lingo-like molecular structures. The reed was not liquefied completely for the appearance of absorption peaks at 1060 and 1160 cm −1 at 200 • C and 230 • C. From Figure 2, it can be seen that the absorbance peaks in the raw, 200 • C and 230 • C materials are similar and hemicellulose and cellulose were present in the biochar obtained at lower temperature [22]. As for 260 • C and 280 • C, the FTIR displays peak changes for the biochar obtained at higher temperature which is different from reed and lower temperature product.…”

Section: Characterization Of Reed and Biocharmentioning

confidence: 97%

Efficient Low Temperature Hydrothermal Carbonization of Chinese Reed for Biochar with High Energy Density

2017

Self Cite

View full text Add to dashboard Cite

Hydrothermal carbonization (HTC), as an environmental friendly process, presents wide potential applicability for converting biomass to biochar with high energy density. Reed, a major energy crop, was converted by a HTC process in a batch reactor at 200-280 • C for 0.5 to 4 h. Biochar mass yield changed from 66.7% to 19.2% and high heating value (HHV) from 20.0 kJ/g to 28.3 kJ/g, respectively, by increasing the carbonization temperature from 200 • C to 280 • C and decreasing the residence time from 2 h to 1 h. The Fourier Transform infrared spectroscopy (FTIR), X-ray Diffraction (XRD), and Scanning Electron Microscope (SEM) results indicated the lignocellulosic crosslink structure of reed is broken and biochar having a high energy density is obtained with the increase of temperature. The microcrystal features of reed are destroyed and biochar contained mainly lignin fractions. The HTC of biocrude is carried out at 200-280 • C for 2.0 h and the results showed that the obtained biochar has uniform particles filled with carbon microspheres.

show abstract

“…The IR spectra of all HTC treated materials have similarities, however, increased temperature indicated changes in the distribution of functional groups of the materials in which aromatic functionalities are more pronounced. All samples show a broad band at 3300 cm −1 referring to the hydroxyl groups (−OH) and aliphatic structures at wavelength 2919 -2829 cm −1 which is attributed to the −CH stretching of in aromatic methoxy groups and in methyl groups from side chains [13]. Bands at 1700 -1730 cm −1 refer to the carbonyl/carboxyl groups which appear more pronounced in the sample HTC 240 (i.e.…”

Section: Ft-irmentioning

confidence: 94%

Hydrothermal Carbonization of Deciduous Biomass (<i>Alnus incana</i>) and Pelletization Prospects

Kc¹,

Babu²,

Alatalo³

et al. 2017

JSBS

View full text Add to dashboard Cite

Thermal treatment of biomass has been attracting attention for a decade or so, especially torrefaction. However, for the past few years, wet pyrolysis, also known as hydrothermal carbonization (HTC), has been getting some attention. Hydrothermal carbonization is a thermal treatment of biomass in the presence of water in a temperature range of 180˚C -260˚C. This method of treating biomass has some benefits which others do not, such as it can handle extremely wet biomass. However, treating biomass may not be enough for practical use. It may need to be transported and stored. Thus, this study explored the idea of pelletizing the HTC biomass. The mechanical strength of the HTC pellets was found to be 93%, whereas, higher heating value (HHV) (dry basis) was found to be 4% higher than the corresponding white pellets. The initial results with some limited parameters indicated that it would be possible to pelletize without binder. However, extensive research on energy balance and economic assessment would be necessary to achieve economic feasibility.

show abstract

Characteristics and pyrolysis dynamic behaviors of hydrothermally treated micro crystalline cellulose

Cited by 25 publications

References 28 publications

Sorption/Desorption Behavior and Mechanism of NH₄⁺by Biochar as a Nitrogen Fertilizer Sustained-Release Material

Sorption/Desorption Behavior and Mechanism of NH₄⁺by Biochar as a Nitrogen Fertilizer Sustained-Release Material

Efficient Low Temperature Hydrothermal Carbonization of Chinese Reed for Biochar with High Energy Density

Hydrothermal Carbonization of Deciduous Biomass (<i>Alnus incana</i>) and Pelletization Prospects

Contact Info

Product

Resources

About

Characteristics and pyrolysis dynamic behaviors of hydrothermally treated micro crystalline cellulose

Cited by 25 publications

References 28 publications

Sorption/Desorption Behavior and Mechanism of NH4+by Biochar as a Nitrogen Fertilizer Sustained-Release Material

Sorption/Desorption Behavior and Mechanism of NH4+by Biochar as a Nitrogen Fertilizer Sustained-Release Material

Efficient Low Temperature Hydrothermal Carbonization of Chinese Reed for Biochar with High Energy Density

Hydrothermal Carbonization of Deciduous Biomass (&lt;i&gt;Alnus incana&lt;/i&gt;) and Pelletization Prospects

Contact Info

Product

Resources

About

Sorption/Desorption Behavior and Mechanism of NH₄⁺by Biochar as a Nitrogen Fertilizer Sustained-Release Material

Sorption/Desorption Behavior and Mechanism of NH₄⁺by Biochar as a Nitrogen Fertilizer Sustained-Release Material

Hydrothermal Carbonization of Deciduous Biomass (<i>Alnus incana</i>) and Pelletization Prospects