Characterisation of Biochar Produced by Pyrolysis from Areca Catechu Dust

Bardalai, Monoj; Mahanta, Dimbendra Kumar

doi:10.1016/j.matpr.2017.09.205

Cited by 23 publications

(7 citation statements)

References 34 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It happened because biochar is mostly composed of lignin and undegraded cellulose. 19 Aromatic absorption peaks recorded for biochar were mainly observed in the last band. This result indicates that biochar samples faced functional group and heteroatom removal processes that have formed more aromatic structures in biochar.…”

Section: Ftir Spectra Biocharmentioning

confidence: 98%

“…Digital pH meter (Akso, AK90) was used to measure sample pH. The samples were added with distilled water at ratio 1:20 (m/v) for 1.5 h. 19 Fourier transform infrared (FTIR) spectroscopy Spectra raw biomass (mesocarp and endocarp) and biochar samples were obtained in the mid infrared region (FT-MID) on a single-beam Agilent CARY 630 FTIR spectrometer. The device worked in diffuse reflectance mode, at wavelength ranging from 500 to 4000 cm -1 (total variation) with 0.5 nm increments; 32 scans were calculated, on average.…”

Section: Ph Determinationmentioning

confidence: 99%

See 1 more Smart Citation

Sustainability of Biorefinery Processes Based on Baru Biomass Waste

Rambo¹,

Rambo²,

Melo³

et al. 2020

J. Braz. Chem. Soc.

View full text Add to dashboard Cite

The aims of the current study are to investigate the composition of biomass from baru processing and to explore the feasibility of valuing it through the development of bioproducts such as fermentable sugars, furanics and biochar. Baru (Dipteryx alata Vog.) waste (endocarp and mesocarp) has great energetic potential to produce bioproducts due to its chemical composition. Proximate analyses applied to such waste have found low favorable moisture and ash content in it. Bioproduct characterizations after acid hydrolysis have shown that baru endocarp and mesocarp biomass can enable a range of value-added products in biorefinery concepts such as furfural and 5-hydroximetylfurfural (20.0 and 1.5% yield, respectively), and high sugar content (approximately 19.15 and 38.40%, respectively). Pyrolysis processes also present high biochar content (ca. 48%), with satisfactory characteristics to be used as fuel, as well as calorific value higher than 30 kJ g-1 .

show abstract

Section: Ftir Spectra Biocharmentioning

confidence: 98%

Section: Ph Determinationmentioning

confidence: 99%

Sustainability of Biorefinery Processes Based on Baru Biomass Waste

Rambo¹,

Rambo²,

Melo³

et al. 2020

J. Braz. Chem. Soc.

View full text Add to dashboard Cite

show abstract

“…This can be explained because lignin pyrolysis produces tars (condensed volatiles) and other decomposition products that, in turn, partially block the pores of the biochar surface. 70 In some areas, the biochar samples contain a large part of arranged structures, mostly of macroporous texture, in the form of a honeycomb. Pore sizes varied on average from 6 to 28 μm; but in some cases, these pores fused after pyrolysis to produce larger cavities.…”

Section: Resultsmentioning

confidence: 99%

Prosopis juliflora Seed Waste as Biochar for the Removal of Blue Methylene: A Thermodynamic and Kinetic Study

et al. 2022

View full text Add to dashboard Cite

In this work, we studied the methylene blue (MB) dye adsorption capacity on biochar derived from residues of Prosopis juliflora seed waste, a species found in the region of the tropical dry forest of Piojó in the Department of Atlántico, Colombia. The materials were obtained by pyrolysis at temperatures of 300, 500, and 700 °C. Biochar was characterized using Fourier transform infrared (FTIR), scanning electron microscopy and energy-dispersive X-ray spectroscopy (SEM-EDX), TGA, and Brunauer–Emmett–Teller (BET) techniques. The three biochar samples presented a macroporous, rough structure with pore size between 6 and 28 μm. The largest pore surface area observed was 1.28 m 2 /g for pyrolyzed biochar produced at 500 °C, larger than that of biochar produced at 700 °C, which was 0.83 m 2 /g. The adsorption results show that the maximum percentage of MB removal was 69%. According to SEM results, the material’s pore sizes varied on average from 6 to 28 μm. We modeled MB adsorption on biomass through three different isotherm models. The Freundlich model was the best-fitting model for the removal of MB ( K F = 1.447; 1/ n = 0.352). The kinetic results showed that the pseudo-second-order model was the best-fitting model for the sorption process ( q e = 2.94 mg/g; k 2 = 0.087 g/(mg/min –1 )). Furthermore, the recycling test showed that the biochar did not change its adsorption capacity significantly. Finally, under the experimental conditions, the thermodynamic parameters indicated that the removal of MB using biochar was an endothermic and spontaneous process; all Δ G ° values ranged from −2.14 to −0.95 kJ/mol; Δ H ° was 23.54 kJ/mol and Δ S ° was 79.5 J/mol.

show abstract

“…The absorption peak of MRBCs at 1618 cm −1 showed a decreasing trend from 300 to 600 • C [38]. The peak of 2845 and 2921 cm −1 was associated with the presence of aliphatic group (-CHn) stretching [39], and the C-H stretching vibration absorption peak of modified biochar was higher than that of unmodified biochar. With increasing carbonization temperature, its absorption peaks increase at 2921 and 2845 cm −1 , indicating that the MRBCs decompose and a more active aromatic structure was formed.…”

Section: Chemical Structurementioning

confidence: 92%

Preparation and Characterization of MgO-Modified Rice Straw Biochars

et al. 2020

View full text Add to dashboard Cite

Rice straw is a common agricultural waste. In order to increase the added value of rice straw and improve the performance of rice straw biochar. MgO-modified biochar (MRBC) was prepared from rice straw at different temperatures, pyrolysis time and MgCl2 concentrations. The microstructure, chemical and crystal structure were studied using X-ray diffraction (XRD), a Scanning Electron Microscope (SEM), Fourier transform infrared spectroscopy (FTIR), nitrogen adsorption desorption isotherms and Elementary Analysis (EA). The results showed that the pyrolysis temperature had significant influence on the structure and physicochemical property of MRBCs. MRBC-2 h has the richest microporous structure while MRBC-2 m has the richest mesoporous structure. The specific surface area (from 9.663 to 250.66 m2/g) and pore volume (from 0.042 to 0.158 cm3/g) of MRBCs increased as temperature rose from 300 to 600 °C. However, it was observed MgCl2 concentrations and pyrolysis time had no significant influence on pore structure of MRBCs. As pyrolysis temperature increased, pH increased and more oxygen-containing functional groups and mineral salts were formed, while MgO-modified yield, volatile matter, total content of hydrogen, oxygen, nitrogen, porosity and average pore diameter decreased. In addition, MRBCs formed at high temperature showed high C content with a low O/C and H/C ratios.

show abstract

Characterisation of Biochar Produced by Pyrolysis from Areca Catechu Dust

Cited by 23 publications

References 34 publications

Sustainability of Biorefinery Processes Based on Baru Biomass Waste

Sustainability of Biorefinery Processes Based on Baru Biomass Waste

Prosopis juliflora Seed Waste as Biochar for the Removal of Blue Methylene: A Thermodynamic and Kinetic Study

Preparation and Characterization of MgO-Modified Rice Straw Biochars

Contact Info

Product

Resources

About