摘要
以生物质发电厂飞灰为原料,经过酸液除杂、矿物质脱除处理后,从飞灰中分离出生物炭。利用X射线衍射(XRD)、傅里叶变换红外光谱(FT-IR)、扫描电子显微镜(SEM)、X射线能谱(EDS)和N_2的吸附/脱附等对生物质飞灰和生物炭进行表征。研究结果表明:生物炭约占飞灰总质量的13.7%。制得的生物炭芳香度约为28.4%,脂肪碳含量较高,且含氧官能团丰富。生物炭的比表面积为128.98 m^2/g,总孔体积为0.08 m^2/g,平均孔径为3.4 nm,表面疏松粗糙、孔隙明显且伴随羟基分布,表面活性较高,具备实际生产应用的价值。
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.
作者
梁光兵
李艳红
訾昌毓
张远琴
彭昭霞
赵榆林
赵文波
LIANG Guangbing;LI Yanhong;ZI Changyu;ZHANG Yuanqin;PENG Zhaoxia;ZHAO Yulin;ZHAO Wenbo(Faculty of Chemical Engineering,Kunming University of Science and Technology,Kunming 650500,China)
出处
《生物质化学工程》
CAS
北大核心
2020年第2期21-26,共6页
Biomass Chemical Engineering
基金
国家自然科学基金资助项目(21766013)
昆明理工大学实验室建设与管理研究项目(SYYJ30)。
关键词
生物炭
生物质发电厂
飞灰
脱矿处理
多功能材料
biochar
biomass power plant
fly ash
demineralization
multifunctional materials
