摘要
以5~8 mm粒径半焦为载体,制备了半焦负载Fe3O4复合材料(Fe3 O4@MSCe),采用SEM、XPS、XRD和FTIR对样品的物化性质和价键结构进行了表征,并研究了Fe3O4@MSCe/H2O2多相Fenton体系的分解性能和放热规律.结果表明:Fe3 O4@MSCe保留了半焦的多孔形态,Fe3O4均匀且牢固地负载于半焦颗粒表面;在pH=7.8~11.2碱性条件下,均保持了较好的分解活性;在[H2O2]=0.25 mol/L、Fe3 O4@MSCe投加量为533g·L^-1、pH=7.8、T0=30℃反应条件下,300 mL浓度为0.04 mol·L^-1的邻苯二胺溶液的分解率为90.9%,溶液温度升高数值为7.1℃,表现出较好的分解性能和放热特性,为解决现有芬顿技术存在的问题和污水处理的能源化利用提供了技术支撑.
In this paper,a semi⁃coke with a particle size of 5-8 mm was used as a carrier to prepare a semi⁃coke loaded Fe3O4 composite material(Fe3O4@MSCe).The physicochemical properties and valence bond structure of the sample were characterized by SEM,XPS,XRD and FTIR,and the decomposition performance and heat release law of Fe3O4@MSCe/H2O2 multiphase Fenton system were studied.The results show that Fe3O4@MSCe retains the porous morphology of the semi⁃coke,and Fe3O4 is uniformly and firmly supported on the surface of the semi⁃coke particles.Under the alkaline conditions of pH=7.8~11.2,both maintain good decomposition activity.In the case of[H2O2]=0.25 mol/L,Fe3O4@MSCe dosage is 533 g·L^-1,pH=7.8,T0=30℃,300 mL o⁃phenylenediamine solution with a concentration of 0.04 mol·L^-1 decomposition,the rate is 90.9%,and the temperature rise value of the solution is 7.1℃.It shows good decomposition performance and exothermic characteristics,which provides technical support for solving the problems of the existing Fenton technology and the energy utilization of sewage treatment.
作者
闫云涛
张柯
程星星
董勇
YAN Yuntao;ZHANG Ke;CHENG Xingxing;DONG Yong(National Engineering Laboratory for Reducing Emissions from Coal Combustion,Engineering Research Center of Environmental Thermal Technology of Ministry of Education,Shandong Key Laboratory of Energy Carbon Reduction and Resource Utilization,School of Energy and Power Engineering,Shandong University,Jinan 250061,China)
出处
《哈尔滨工业大学学报》
EI
CAS
CSCD
北大核心
2021年第1期147-154,175,共9页
Journal of Harbin Institute of Technology
基金
国家自然科学基金(51478144)。
关键词
多相类芬顿
分解
放热
污水
Multiphase Fenton
decomposition
heat release
sewage
作者简介
闫云涛(1972-),男,博士研究生,高级工程师;董勇(1967-),男,教授,博士生导师;通信作者:程星星,xcheng@sdu.edu.cn。
