Pyrolysis and Combustion of Regional Agro-Industrial Wastes: Thermal Behavior and Kinetic Parameters Comparison

Fernandez, Anabel; Palacios, Carlos; Echegaray, Marcelo; Mazza, Germán

doi:10.1080/00102202.2017.1377701

Cited by 38 publications

(13 citation statements)

References 66 publications

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“…In nonisothermal kinetic analysis, the pyrolysis rate is expressed as 27 , 30 where α is the conversion (0<α < 1), dα/d t is the pyrolysis rate, k ( T ) is the Arrhenius rate constant and k ( T ) = k 0 exp (− E / RT ), f (α) is the reaction mechanism function, k is the pre-exponential factor, β is the heating rate and β = d T /d t , E is the apparent activation energy, R is the universal gas constant, and T is the temperature.…”

Section: Experimental Section and Methodsmentioning

confidence: 99%

“…Therefore, the pyrolysis process of the polymer can be considered a weighting of the independent reactions of the m pseudo components, and the pyrolysis reaction kinetics of each pseudo component can be described by the DAEM. 30 Then, the standard equation of the M-DAEM can be expressed as 26 , 32 where c i represents the pyrolyzed gas content of the i - th pseudo component, i is the component index, σ i is the standard deviation, and ψ( E , T ) is the integral function of the Boltzmann factor.…”

Section: Experimental Section and Methodsmentioning

confidence: 99%

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Thermal Debinding Kinetics of Gelcast Ceramic Parts via a Modified Independent Parallel Reaction Model in Comparison with the Multiple Normally Distributed Activation Energy Model

Huang

2022

ACS Omega

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This work aims to provide useful insights into the thermal debinding kinetics of gelcast ceramic parts, especially for debinding kinetics prediction involving heat preservation. Debinding experiments were conducted in a differential thermogravimetric analyzer at five heating rates (5, 8, 10, 15, and 20 °C/min) in the temperature range of 35–900 °C under an air atmosphere. The conversion (α) and pyrolysis rate (dα/d T ) data were simulated using a modified independent parallel reaction (IPR) model and a multiple normally distributed activation energy model (M-DAEM). Their validity was assessed and compared by checking the agreement between the experimental results and the prediction capability. The results showed that both the modified IPR model and M-DAEM had high predictability for thermal debinding kinetics under linear heating conditions. The fitting quality parameters (Fit) were less than 1.406 and 1.01%, respectively. The activation energies ( E i , i = 1, 2, 3, 4, and 5) calculated by the M-DAEM ranged from 153.312 to 217.171 kJ/mol. The relationships between E i of pseudo components 1 to 5 calculated by the modified IPR model were a function of the conversion rate. The E i values were E 1 (α) = 116.750 + 11.153α – 26.772α 2 + 4.362α 3 kJ/mol, E 2 (α) = 139.595 – 66.162α + 75.702α 2 – 38.041α 3 kJ/mol, E 3 (α) = 190.854 + 135.755α – 214.801α 2 + 116.093α 3 kJ/mol, E 4 (α) = 64.068 + 280.086α – 380.270α 2 + 264.724α 3 kJ/mol, and E 5 (α) = 188.257 – 77.086α + 74.129α 2 – 48.669α 3 kJ/mol, respectively. However, it is noteworthy that the α and dα/d T curves predicted by the modified IPR model with a deviation of less than 8% were better than those predicted by the M-DAEM for the linear thermal debinding process with the holding stage. Accordingly, it is believed that the proposed modified IPR model is suitable for describing the thermal debinding kinetics involving the heat preservation of gelcast green parts.

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Section: Experimental Section and Methodsmentioning

confidence: 99%

Section: Experimental Section and Methodsmentioning

confidence: 99%

Thermal Debinding Kinetics of Gelcast Ceramic Parts via a Modified Independent Parallel Reaction Model in Comparison with the Multiple Normally Distributed Activation Energy Model

Huang

2022

ACS Omega

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“…Using the FWO method the activation energy of olive pomace is calculated and ranging from 116 to 203.0 kJ mol −1 at HRs 2 to 20 K min −1 (Khalideh Al bkoor Alrawashdeh et al 2017) and using the KAS method is ranged from 35.77 to 247.8 kJ mol −1 at HRs 5 to 25°C min −1 (Ghouma et al 2017). Other researchers determined , the activation energy of olives at HRs of 5, 10, and 15 K min −1 using two models, DAEM and FWO, respectively, which were 110, 18 and 113.8 kJ mol -1 (Fernandez et al 2018). (Çepelioğullar et al 2018) have also determined the activation energy for olive oil residue (OOR)…”

Section: 5kinetics Of Thermal Decompositionmentioning

confidence: 99%

Sustainable Valorization of Olive Pomace Waste to Renewable Biofuels, Biomaterials and Biochemicals Via Pyrolysis Process: Experimental and Numerical Investigation

Aissaoui

Trabelsi²,

Bensidhom³

et al. 2021

Preprint

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This work demonstrates, experimentally and numerically, the potential of Olive Pomace Waste (OPW) to produce renewable biofuels (pyrolytic oil and gas), bio-chemicals (tars as source of bioactive molecules) and bio-fertilizers (chars) through slow pyrolysis. Experimental pyrolysis runs were conducted at 500, 600 and 700°C as final pyrolysis temperature, 15, 20 and 25°C/min as heating rate and 1h as residence time, in a fixed bed pyrolyzer. In the optimum pyrolysis conditions (600°C and 15°C/min), 33 wt.% of oil, 30.00 wt.% of char and 37 wt.% of gas were produced. Recovered pyrolytic oil presents good energy value (HHV between 15.96 and 20.94 MJ/kg) with a great bioactive potential. The released permanent gases show an interesting energy content (LHV up to 11 MJ/Kg) which emphasizes their application in a gas engine to provide renewable electricity in rural olive groves area. The recovered OPW biochar presents a high carbon (C 72.54 wt.%) and nutrients contents (up to 8.42 mg/g of Ca, up to 8.69 mg/g of K and up to 2.02 % of total N) which make it suitable for soil amendment and for long-term carbon sequestration. Kinetic study of OPW pyrolysis, performed using the Distributed Activation Energy Model (DAEM), gives an activation energy values ranging from 121.6 to 151.6 kJ/mol. The investigation of the OPW thermal behavior and reactivity under pyrolysis conditions is useful approach to design and operate slow pyrolysis process at commercial scale, which could be useful by farmers for OPW in olive fields.

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“…A part of volatiles can be condensed and recovered as liquid products (water and bio-oil), and the rest, the non-condensable volatiles, are gaseous products (H 2 , CO, CO ). A carbonaceous solid (biochar) also remains after the volatiles are released from the bio-waste matrix [7]. On the other hand, process simulations have been evidenced to be very effective tools for the design and optimization of chemical processes.…”

Section: Introductionmentioning

confidence: 99%

Sustainable Slow-Pyrolysis Simulation of 12 Lignocellulosic Bio-wastes: CO₂ Emission, Energy, and Water Consumption

Zalazar-García

Fernandez

Rodriguez-Ortiz

et al. 2022

IOP Conf. Ser.: Earth Environ. Sci.

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The development and increase of the agro-industrial activity generate bio-waste that represents significant quantities and causes environmental impacts, as residual effluents and solid wastes. These bio-wastes can be converted into different products through the pyrolysis processes (biochar, bio-oil, and gas). In this work, the pyrolysis at 673, 773, and 873 K of 12 types of bio-waste characterized by their elemental composition was assessed through the simulation process. Cape Open to Cape Open Simulator (COCO) free software was used in simulations. Thus, the biochar, bio-oil, and gas yields were predicted. Also, the energy, water consumption, and CO2 emission were calculated for each type of bio-waste. The marc and the stalk of white grape presented the highest biochar and bio-oil yields (30.7 and 53.1 %wt) at 673 K. The pistachio green shell presented the highest gas yield, 53.7 %wt at 873 K. The maximum energy consumption and CO2 emissions founded were 13.72 kWh and 3.72 kg/h for the stalk of white grape at 873 K respectively, while the lowest energy consumption and CO2 emission were 9.22 kWh and 2.31 kg/h for plum pits at 773 K respectively. The highest water consumption was 25.86 kg/h for the stalk of red grape at 773 K, while the lowest value was 14.30 kg/h for plum pits at 773 K.

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Pyrolysis and Combustion of Regional Agro-Industrial Wastes: Thermal Behavior and Kinetic Parameters Comparison

Cited by 38 publications

References 66 publications

Thermal Debinding Kinetics of Gelcast Ceramic Parts via a Modified Independent Parallel Reaction Model in Comparison with the Multiple Normally Distributed Activation Energy Model

Thermal Debinding Kinetics of Gelcast Ceramic Parts via a Modified Independent Parallel Reaction Model in Comparison with the Multiple Normally Distributed Activation Energy Model

Sustainable Valorization of Olive Pomace Waste to Renewable Biofuels, Biomaterials and Biochemicals Via Pyrolysis Process: Experimental and Numerical Investigation

Sustainable Slow-Pyrolysis Simulation of 12 Lignocellulosic Bio-wastes: CO₂ Emission, Energy, and Water Consumption

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Pyrolysis and Combustion of Regional Agro-Industrial Wastes: Thermal Behavior and Kinetic Parameters Comparison

Cited by 38 publications

References 66 publications

Thermal Debinding Kinetics of Gelcast Ceramic Parts via a Modified Independent Parallel Reaction Model in Comparison with the Multiple Normally Distributed Activation Energy Model

Thermal Debinding Kinetics of Gelcast Ceramic Parts via a Modified Independent Parallel Reaction Model in Comparison with the Multiple Normally Distributed Activation Energy Model

Sustainable Valorization of Olive Pomace Waste to Renewable Biofuels, Biomaterials and Biochemicals Via Pyrolysis Process: Experimental and Numerical Investigation

Sustainable Slow-Pyrolysis Simulation of 12 Lignocellulosic Bio-wastes: CO2 Emission, Energy, and Water Consumption

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Product

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Sustainable Slow-Pyrolysis Simulation of 12 Lignocellulosic Bio-wastes: CO₂ Emission, Energy, and Water Consumption