On-line analysis of the correlation between gasification characteristics and microstructure of woody biowaste after hydrothermal carbonization

Zeng, Mingxun; Ge, Zefeng; Ma, Yuna; Zha, Zhenting; Zhang, Huiyan

doi:10.1016/j.biortech.2021.126009

Cited by 33 publications

(2 citation statements)

References 34 publications

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“…The intrinsic property of low ash content can reduce the influence of the alkaline earth metals on the HTC pretreatment process. 14 Previous studies have reported the use of several technologies based on industrial poplar waste for separating heavy metals, CO 2 , etc. Demey et al, torrefied poplar wood fragments to remove Pb(II) and Tb(III) from aqueous solutions.…”

Section: Introductionmentioning

confidence: 99%

“…Poplar sawdust is a typical biowaste with large reserves and wide distribution in China. The intrinsic property of low ash content can reduce the influence of the alkaline earth metals on the HTC pretreatment process . Previous studies have reported the use of several technologies based on industrial poplar waste for separating heavy metals, CO 2 , etc.…”

Section: Introductionmentioning

confidence: 99%

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Preparation and Adsorption Properties of Green Sustainable Biomass Carbon Microspheres

Hao

Zhang

Wang

et al. 2022

Ind. Eng. Chem. Res.

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In this study, carbon microspheres (CSn) with various oxygencontaining functional groups (−OH, −C�O, −COOR) were prepared through hydrothermal carbonization at different temperatures. The raw material is the micro-/nanocellulose prepared from factory poplar waste. Methylene blue (MB), as the model dye, was used to verify the adsorption performances. The influences of different adsorption parameters, such as adsorption time, temperature, solution pH, and ion concentration, were analyzed. The adsorption kinetics was well fitted to the pseudo-second-order model. The adsorption isotherm was better described by the Langmuir isotherm with the maximum adsorption capacity (536.64 mg g −1 ) at room temperature. Using Fourier transform infrared (FTIR), X-ray photoelectron spectroscopy (XPS), and adsorption processes, it was confirmed that the interactions between the oxygen-containing functional groups and methylene blue were the key factor affecting the adsorption. At the same time, it was further confirmed that the content of the oxygen-containing functional groups of the CSn had been relatively reduced with the increases in the temperature, and the adsorption capacity of methylene blue was also decreased. The CSn after adsorption of methylene blue were directly pyrolyzed and its electrical conductivity was also significantly improved. The conducting material not only solved the dilemma of desorption waste liquid treatment but also achieved the dual application of the materials. Therefore, CSn is considered to be a green and sustainable carbon material.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Preparation and Adsorption Properties of Green Sustainable Biomass Carbon Microspheres

Hao

Zhang

Wang

et al. 2022

Ind. Eng. Chem. Res.

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Preparation and characterization of the poplar micro-nano cellulose sustainable carbon spheres

Hao

Zhang

Shi³

et al. 2022

Biomass Conv. Bioref.

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Cellulose extracted from the factory waste poplar, converted into value-added carbon spheres by hydrothermal carbonization (HTC). Oxygen-rich functional group carbon spheres with smooth morphology, good dispersibility, controllable particle size, high carbon content and high calori c value were prepared under different process conditions. The optimum process conditions for obtaining good shape are temperature 250℃, time 12h, and cellulose dosage 1g. Under these conditions, the produced carbon microspheres have smooth surface, high dispersion and uniform particles. FTIR, XPS and elemental analysis indicated that the carbon content was as high as ~ 75% with increasing temperature and time, and the theoretically calculated HHV was 29.4 MJ/kg. The H/C and O/C ratios are quite different relative to the raw materials, demonstrating that cellulose undergoes dehydration, decarboxylation and demethylation during hydrothermal carbonization to form carbon microspheres with oxygenrich functional groups. The carbon materials were analyzed by BET, TG, Raman and XRD, which further proved that the carbon microspheres are high-concentration aromatized amorphous non-porous carbon materials.

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Preparation of porous carbon materials from biomass pyrolysis vapors for hydrogen storage

et al. 2022

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On-line analysis of the correlation between gasification characteristics and microstructure of woody biowaste after hydrothermal carbonization

Cited by 33 publications

References 34 publications

Preparation and Adsorption Properties of Green Sustainable Biomass Carbon Microspheres

Preparation and Adsorption Properties of Green Sustainable Biomass Carbon Microspheres

Preparation and characterization of the poplar micro-nano cellulose sustainable carbon spheres

Preparation of porous carbon materials from biomass pyrolysis vapors for hydrogen storage

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