Effect of temperature on catalytic pyrolysis of Polyalthia Longifolia leaves solid waste and characterization of their products

Gupta, Shivam; Kawale, Harshal D.; Ahmed, Gaffer; Acharya, Sneha; Kishore, Nanda

doi:10.1016/j.crgsc.2021.100062

Cited by 15 publications

(9 citation statements)

References 41 publications

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“…Between 350 and 400 °C, overlap between cellulose and hemicellulose decomposition took place. 6 The loss of lignin content in CLPE was apparent from a long devolatilization tail at 440 °C temperature. A groove between 220 and 330 °C in the DTG profile indicated the degradation of hemicellulose and cellulose.…”

Section: Resultsmentioning

confidence: 99%

“…However, the peak at 0 ppm could be considered as a standard for tetramethylsilane (TMS), which is the default in NMR systems. 6 Aliphatic protons attached to carbon atoms (alkanes) were evident in peaks in the range of 0–1.5 ppm. 69 This indicated the fatty acids and hydrocarbons in the biocrude and were seen to have consistency with the GC-MS results discussed above.…”

Section: Resultsmentioning

confidence: 99%

“…Both biochemical and thermochemical conversion technologies 3,4 are being extensively researched for biofuel production from biomass. 5,6 Thermochemical conversion comprises of gasication, pyrolysis, and hydrothermal processing. Hydrothermal processing is further divided into hydrothermal liquefaction, hydrothermal carbonization, and hydrothermal gasication.…”

Section: Introductionmentioning

confidence: 99%

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Citrus limetta fruit waste management by liquefaction using hydrogen-donor solvent

Acharya

Kishore

2022

RSC Adv.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Citrus limetta fruit waste management by liquefaction using hydrogen-donor solvent

Acharya

Kishore

2022

RSC Adv.

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“…Through pyrolysis, the basic organic components of raw materials, such as hemicellulose, cellulose, and lignin, degraded between 200 and 600 °C. Depending on the pyrolysis temperature, different structural compositions of cellulose, hemicellulose, and lignin lead to thermal decomposition differences and, therefore, to different remaining percentages of these compounds in the final biochar . After cellulose degradation, the lignin content continues to decompose from 400 to 800 °C; this is the most complex polymer of lignocellulosic biomass and requires high temperatures and more time for decomposition.…”

Section: Resultsmentioning

confidence: 99%

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

et al. 2022

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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.

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“…Heat of combustion is the amount of heat produced when a fuel burns completely. It can be determined by bomb calorimetric techniques, in which an adiabatic system is maintained using a temperature-controlled water bath [23]. There are two values for the heat of combustion of a fuel: the higher heating value (HHV) and the lower heating value (LHV).…”

Section: Heating Valuesmentioning

confidence: 99%

Waste-Based Intermediate Bioenergy Carriers: Syngas Production via Coupling Slow Pyrolysis with Gasification under a Circular Economy Model

Frantzi

Zabaniotou

2021

Energies

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Waste-based feedstocks and bioenergy intermediate carriers are key issues of the whole bioenergy value chain. Towards a circular economy, changing upcycling infra-structure systems takes time, while energy-from-waste (EfW) technologies like waste pyrolysis and gasification could play an integral part. Thus, the aim of this study is to propose a circular economy pathway for the waste to energy (WtE) thermochemical technologies, through which solid biomass waste can be slowly pyrolyzed to biochar (main product), in various regionally distributed small plants, and the pyro-oils, by-products of those plants could be used as an intermediate energy carrier to fuel a central gasification plant for syngas production. Through the performed review, the main parameters of the whole process chain, from waste to syngas, were discussed. The study develops a conceptual model that can be implemented for overcoming barriers to the broad deployment of WtE solutions. The proposed model of WtE facilities is changing the recycling economy into a circular economy, where nothing is wasted, while a carbon-negative energy carrier can be achieved. The downstream side of the process (cleaning of syngas) and the economic feasibility of the dual such system need optimization.

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Effect of temperature on catalytic pyrolysis of Polyalthia Longifolia leaves solid waste and characterization of their products

Cited by 15 publications

References 41 publications

Citrus limetta fruit waste management by liquefaction using hydrogen-donor solvent

Citrus limetta fruit waste management by liquefaction using hydrogen-donor solvent

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

Waste-Based Intermediate Bioenergy Carriers: Syngas Production via Coupling Slow Pyrolysis with Gasification under a Circular Economy Model

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