Comparative pyrolysis behaviors and reaction mechanisms of hardwood and softwood

Ding, Yanming; Ezekoye, Ofodike A.; Lu, Shouxiang; Wang, Changjian; Zhou, Ru

doi:10.1016/j.enconman.2016.11.016

Cited by 142 publications

(55 citation statements)

References 36 publications

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“…Pyrolysis, a universally applicable method for reusing biomass materials, has gained more and more attention. The pyrolysis behaviour and mechanism of the main components of wood such as cellulose [1,2], hemicellulose [1,2], lignin [1,2,3] and extractives [2,4] as well as the pyrolysis differences between different wood species [5] have been reported. Mainly due to the shortage of high-quality wood from natural forest and the insufficient wood properties of plantation forest, the production and consumption of modified wood are increasing.…”

Section: Introductionmentioning

confidence: 99%

Effects of impregnation combined heat treatment on the pyrolysis behavior of poplar wood

Jin

Cai

et al. 2020

PLoS ONE

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To investigate the effects of urea-formaldehyde (UF) resin impregnation combined heat treatment (IMPG-HT) on the pyrolysis behavior of poplar wood, the chemical composition, pyrolysis characteristics, pyrolysis kinetics, and gaseous products released during pyrolysis of untreated (control), IMPG-HT, IMPG and HT woods were analyzed. The results demonstrate that IMPG-HT changes pyrolysis behavior of poplar wood significantly. Unlike the control and HT samples, the thermogravimetric / derivative thermogravimetric (TG/DTG) curves of IMPG wood shift toward lower temperature, and the shoulder on DTG curves weaken or even disappear. The maximum mass loss rate of IMPG-HT samples decreases, and carbon residual yield increases to 23% or more and activation energy (E) increases sharply after conversion rate (α) reaching 0.80. HT improves the thermal stability of IMPG wood, which is represented by the increase of decomposition temperature (T d ) and DTG peak temperature (T peak ) and the higher E value of IMPG-HT wood. For the pyrolysis gaseous products, IMPG-HT wood produces nitrogen-containing gases (HNCO and NH 3 ) due to the presence of UF resin, but the amounts of these gases are less than that produced by IMPG wood because the heat treatment had removed part of N elements. (2020) Effects of impregnation combined heat treatment on the pyrolysis behavior of poplar wood. PLoS ONE 15(3): e0229907. https://doi.org/ 10.Effects of impregnation combined heat treatment on the pyrolysis behavior of poplar wood PLOS ONE | https://doi.org/10.1371/journal.pone.0229907 March 17, 2020 2 / 15 Fig 5. The linear fitting diagrams of IMPG-HT samples. (a) The linear fitting diagrams of IMPG-HT samples obtained by FWO method within the conversion range of 0.10<α<0.90; (b) The linear fitting diagrams of IMPG-HT samples obtained by KAS method within the conversion range of 0.10<α<0.90.

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Section: Introductionmentioning

confidence: 99%

Effects of impregnation combined heat treatment on the pyrolysis behavior of poplar wood

Jin

Cai

et al. 2020

PLoS ONE

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Section: Thermogravimetric Analysismentioning

confidence: 99%

“…Ross et al [25] found that there were significant differences in the pyrolysis properties between algae biomass and terrestrial lignocellulosic biomass. Different from lignocellulosic biomass, whose main components are hemicellulose, cellulose, and lignin [26,27], the main components of algal biomass are protein, carbohydrate, and lipid. Figure 1 shows that the main pyrolysis process was divided into three parts: Stage I in the temperature range of 300-460 K, Stage II in the temperature range of 460-800 K, and Stage III in the temperature range of 800-1100 K, which is marked in the figure.…”

Section: Thermogravimetric Analysismentioning

confidence: 99%

Energy Utilization of Algae Biomass Waste Enteromorpha Resulting in Green Tide in China: Pyrolysis Kinetic Parameters Estimation Based on Shuffled Complex Evolution

2020

Self Cite

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Enteromorpha is a species of algae biomass that is spread widely and has resulted in green tides in China in recent years. It was urgent to explore an appropriate method for taking advantage of the ocean waste as an energy supply in the current sustainable development. Pyrolysis, as the first step of thermochemical conversion in energy utilization, was given attention in order to study its behavior based on thermogravimetric experiments over a wide heating-rate range from 5 to 60 K/min. The whole pyrolysis process was divided into three stages: water evaporation, the main components decomposition, and carbonate decomposition. To estimate the detailed kinetic parameters (activation energy, the pre-exponential factor, and reaction order etc.), the Kissinger method was used to establish the original kinetic parameters at different stages and provide the parameter search range for the next heuristic algorithm, and then the Shuffled Complex Evolution optimization algorithm was coupled and first applied to the algae biomass pyrolysis. Eventually, the predicted results of mass loss rate based on the optimized kinetic parameters agreed well with the thermogravimetric experimental data, with the R 2 value being up to 0.92 for all the heating rates.

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“…3,4 Lignocelluloses biomass is a second generation biomass that can replace crude oil in factories for production of transportation fuel. Lignocellulosic biomass is an indirect form of solar energy and a renewable source of carbon; through photosynthesis, it store chemical energy by absorbing sunlight and CO 2 .…”

Section: Introductionmentioning

confidence: 99%

“…Lignocellulosic biomass is a major renewable energy resource that can be used as an alternative way for various recent bioenergy production sources. 3,4 Lignocelluloses biomass is a second generation biomass that can replace crude oil in factories for production of transportation fuel. Rice husk is a highly produced agricultural biomass in areas like India, Malaysia, China, Pakistan, and Brunei that are rich in rice production.…”

Section: Introductionmentioning

confidence: 99%

Catalytic fast pyrolysis of rice husk: Influence of commercial and synthesized microporous zeolites on deoxygenation of biomass pyrolysis vapors

Naqvi

2017

Int J Energy Res

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Summary Research on utilization of abundant rice residue for valuable bioenergy products is still not explored completely. A simple, robust, cheap, and one‐step fast pyrolysis reactor is still a key demand for production of bioenergy products, ie, high quality bio‐oil and biochar. Bio‐oil extracted from fast pyrolysis does not have adequate quality (eg, acidic and highly oxygenated). Catalytic fast pyrolysis using zeolites in the fast pyrolysis process effectively reduces the oxygen content (no H2 required). In this paper, the zeolites with different pore sizes and shapes (small pore, SAPO‐34 (0.56) and ferrierite (30); medium pore, ZSM‐5 (30), MCM‐22 (30), and ITQ‐2 (30); and large pore zeolite, mordenite (30)) were tested in a drop‐type fixed‐bed pyrolyzer. Catalytic deoxygenation is conducted at 450°C at the catalyst/biomass ratio of 0.1. Zeolite catalysts, its pore size and shape, could influence largely on deoxygenation. It was found that the small pore zeolites did not produce aromatics as compared to higher amount of aromatics formed in case of medium pore zeolites. ZSM‐5 and ITQ‐2 zeolites were especially efficient for the higher deoxygenation of biomass pyrolysis vapors due to better pore dimension and higher acidity.

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Comparative pyrolysis behaviors and reaction mechanisms of hardwood and softwood

Cited by 142 publications

References 36 publications

Effects of impregnation combined heat treatment on the pyrolysis behavior of poplar wood

Effects of impregnation combined heat treatment on the pyrolysis behavior of poplar wood

Energy Utilization of Algae Biomass Waste Enteromorpha Resulting in Green Tide in China: Pyrolysis Kinetic Parameters Estimation Based on Shuffled Complex Evolution

Catalytic fast pyrolysis of rice husk: Influence of commercial and synthesized microporous zeolites on deoxygenation of biomass pyrolysis vapors

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