Influencing mechanism of zinc mineral contamination on pyrolysis kinetic and product characteristics of corn biomass

Li, Changjing; Ji, Guozhao; Qu, Yi; Irfan, Muhammad; Zhu, Kongyun; Wang, Xuexue; Li, Aimin

doi:10.1016/j.jenvman.2020.111837

Cited by 17 publications

(10 citation statements)

References 47 publications

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“…However, as shown in Figure 6 b,d, the two DTG peaks of rice straw with Cd loading of 0.1%, 1%, and 5% are easily distinguished, and the separation of the two peaks is more significant with the increase of Cd loading. These results are significantly different from previous studies [ 8 ]. Li et al [ 8 ] reported that Zn contamination could increase the overlap between hemicellulose and cellulose.…”

Section: Resultscontrasting

confidence: 99%

“…These results are significantly different from previous studies [ 8 ]. Li et al [ 8 ] reported that Zn contamination could increase the overlap between hemicellulose and cellulose. In this study, inversely, Cd contamination promotes the separation between hemicellulose and cellulose.…”

Section: Resultscontrasting

confidence: 99%

“…Pyrolysis is regarded as a promising technology for the treatment of HMCB [ 8 ], which can convert various types of lignocellulosic biomass into higher-value-added biochar, bio-oil, and biogas [ 9 , 10 ]. Furthermore, pyrolysis treatment enriches the original heavy metals in biochar manyfold, being conducive to subsequent resource recovery [ 11 , 12 , 13 ].…”

Section: Introductionmentioning

confidence: 99%

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Effect of Cd on Pyrolysis Velocity and Deoxygenation Characteristics of Rice Straw: Analogized with Cd-Impregnated Representative Biomass Components

Guo

Xie

et al. 2022

IJERPH

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The pyrolysis characteristics of cadmium (Cd)-impregnated cellulose, hemicellulose, and lignin were studied to elucidate the pyrolysis velocity and deoxygenation characteristics of Cd-contaminated rice straw. The results show that Cd significantly affects the pyrolysis characteristics of a single biomass component. With a heating rate of 5 °C·min−1 and a Cd loading of 5%, the initial pyrolysis temperature of cellulose and hemicellulose decreases while that of lignin increases. The maximum pyrolysis velocity of cellulose, hemicellulose, and lignin is decreased by 36.6%, 12.4%, and 15.2%, respectively. Cd increases the pyrolysis activation energy of the three components and inhibits their deoxygenation. For the pyrolysis of Cd-contaminated rice straw, both the initial depolymerization temperature and the pyrolysis velocity of hemicellulose is reduced, while the pyrolysis velocity of cellulose is accordingly increased. When Cd loading amplifies to 0.1%, 1%, and 5%, the maximum pyrolysis velocity of hemicellulose is decreased by 7.2%, 10.5%, and 21.3%, while that of cellulose is increased by 8.4%, 62.1%, and 97.3%, respectively. Cd reduces the release of volatiles and gas from rice straw, such as CO2, CO, and oxygen-containing organics, which retains more oxygen and components in the solid fraction. This research suggested that Cd retards the pyrolysis velocity and deoxygenation of rice straw, being therefore beneficial to obtaining more biochar.

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Section: Resultscontrasting

confidence: 99%

Section: Resultscontrasting

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Effect of Cd on Pyrolysis Velocity and Deoxygenation Characteristics of Rice Straw: Analogized with Cd-Impregnated Representative Biomass Components

Guo

Xie

et al. 2022

IJERPH

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“…7 is desired, as confirmed by the results for C5 sugars in Fig. 4a and by previous studies 32 . Nevertheless, it is still worth exploring the roles of metallic Pd 0 , PdO and even ZnSO 4 in the critical Grob fragmentation from step 8 to step 10 for the formation of the final furfural.…”

Section: Resultssupporting

confidence: 86%

“…The heterogeneous catalyst developed here is also expected to be bifunctional, selectively catalyzing both dehydration and Grob fragmentation from the C6 sugar molecules. The ZnSO 4 support aims to dehydrate C6 molecules, as suggested by studies on C5 sugars, in which sulfates have proven to be the most effective [26][27][28][29][30][31][32] , and the cation Zn 2+ (in the form of ZnCl 2 ) 30,33-37 has a higher dehydration activity than its counterparts, including ferric iron (Fe 3+ ) 30,[38][39][40][41][42][43] and copper (Cu 2+ ) 28,38,41,44 . On the other hand, the Pd dopant is expected to selectively cleave the C-C bond from the side group formaldehyde, as has been suggested by the production of furan from furfural using a 2% Pd/carbon catalyst 45 and in petroleum cracking 46 .…”

mentioning

confidence: 99%

High production of furfural by flash pyrolysis of C6 sugars and lignocellulose by Pd-PdO/ZnSO4 catalyst

Zhou

Wang

et al. 2023

Nat Commun

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Furfural (C5H4O2) is an important platform chemical for the synthesis of next-generation bio-fuels. Herein, we report a novel and reusable heterogeneous catalyst, Pd-PdO/ZnSO4 with 1.1 mol% palladium (Pd), for the production of furfural by flash pyrolysis of lignocelluloses at 400 °C. For both dry and wet C6 cellulose and its monomers, the furfural yields reach 74–82 mol%, relative to 96 mol% from C5 xylan and 23–33 wt% from sugarcane bagasse and corncob. The catalyst has a well-defined structure and bifunctional property, comprising a ZnSO4 support for the dehydration and isomerization of glucose, and a local core-shell configuration for metallic Pd0 encapsulated by an oxide (PdO) layer. The PdO layer is active for the Grob fragmentation of formaldehyde (HCHO) from glucose, which is subsequently in-situ steam reformed into syn-gas (i.e. H2 and CO), whereas the Pd0 core is active in promoting the last dehydration step for the formation of furfural.

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Zinc Removal Mechanisms with Recycled Lignocellulose: from Fruit Residual to Biosorbent then Soil Conditioner

Kayranlı

Gök

Yılmaz

et al. 2021

Water Air Soil Pollut

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Influencing mechanism of zinc mineral contamination on pyrolysis kinetic and product characteristics of corn biomass

Cited by 17 publications

References 47 publications

Effect of Cd on Pyrolysis Velocity and Deoxygenation Characteristics of Rice Straw: Analogized with Cd-Impregnated Representative Biomass Components

Effect of Cd on Pyrolysis Velocity and Deoxygenation Characteristics of Rice Straw: Analogized with Cd-Impregnated Representative Biomass Components

High production of furfural by flash pyrolysis of C6 sugars and lignocellulose by Pd-PdO/ZnSO4 catalyst

Zinc Removal Mechanisms with Recycled Lignocellulose: from Fruit Residual to Biosorbent then Soil Conditioner

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