生物质发电厂飞灰制备生物炭的研究

doi:10.3969/j.issn.1673-5854.2020.02.004

Abstract

Abstract:

Biochar could be produced from biomass power plants fly ash after acidic leaching and demineralization. Biomass fly ash and biochar were characterized by X-ray diffraction(XRD), Fourier infrared spectroscopy(FT-IR), scanning electron microscope(SEM), X-ray energy dispersive spectrometer(EDS) and N₂ adsorption/desorption. The results indicated that the biochar mass was 13.7% of the mass of fly ash and the aromatic degree of biochar was 28.4%. Moreover, the content of aliphatic carbon was high and the oxygen functional groups were abundant. Meanwhile, the specific surface area, total pore volume and mean pore diameter of biochar were 128.98 m²/g, 0.08 m²/g and 3.4 nm, respectively. The obtained biochar coated with hydroxide radicals has the potential for practical production and application, due to its loose and rough surface, abundant pore structure and high surface reactive.

Key words: biochar, biomass power plant, fly ash, demineralization, multifunctional materials

CLC Number:

TQ35
X773

Guangbing LIANG,Yanhong LI,Changyu ZI,Yuanqin ZHANG,Zhaoxia PENG,Yulin ZHAO,Wenbo ZHAO. Fly Ash from Biomass Power Plant to Prepare Biochar[J]. Biomass Chemical Engineering, 2020, 54(2): 21-26.

Figures/Tables 8

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References 28

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成分 composition	2θ/°	最大峰高 max height	半峰宽 FWHM	峰面积 area fit
脂肪碳(γ带) aliphatic carbon(γ band)	21.5	33.9	10.5	380.1
芳香碳(G带) aromatic carbon(G band)	25.8	31.2	4.5	150.6

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Fly Ash from Biomass Power Plant to Prepare Biochar

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