皮革科学与工程2024，Vol.34Issue(6)：9-15,7.DOI:10.19677/j.issn.1004-7964.2024.06.002
废弃胶原纤维固化单宁吸附材料原位Fe2O3微波催化裂解减容研究
Microwave Assisted Pyrolysis of Collagen Fiber-Immobilized Tannins by the Catalysis of in situ Fe2O3
摘要
Abstract
Collagen fiber based adsorbents have gradually received attention due to their exceptional performances in nuclide adsorption,but the final disposal of those adsorbents remains a concern.In this study,the pyrolysis of collagen fiber-immobilized tannins(CFT)was conducted by the catalysis of in situ Fe2O3 for the purpose of safe and effective volume reduction.The pyrolysis process was first investigated through thermogravimetric analysis technique,and it was found that the Fe3+doped into CFT(Fe-CFT)could lower the pyrolysis temperature to approximately 450 ℃,which is 150 ℃ lower than that of direct pyrolysis without catalysts,while the residual rate was only 9.5％.Furthermore,the microwave-assisted pyrolysis of Fe-CFT was conducted using nano-Fe2O3 as the heat transfer medium,the residual rate of Fe-CFT decreased further to 2.1％.The solid residue was then undertaken Fourier transform infrared spectroscopy,X-ray diffraction and elemental analyses,and it was found that the Fe3+doped into CFT was converted into Fe2O3,which effectively promoted the CFT pyrolysis process.In summary,this study innovatively utilizes microwave heating technology to effectively reduce the pyrolysis temperature of CFT through in situ Fe2O3 catalysts,and the residual rate is very low,thereby achieving safe and efficient volume reduction of radioactive waste of collagen fiber-based adsorbents.关键词
胶原纤维/单宁/吸附/原位Fe2O3/催化裂解/减容/微波裂解Key words
collagen fiber/tannins/adsorption/Fe2O3 in situ/catalytic pyrolysis/volume reduction/microwave assisted pyrolysis分类
能源科技引用本文复制引用
李林倚,肖霄,廖学品,石碧..废弃胶原纤维固化单宁吸附材料原位Fe2O3微波催化裂解减容研究[J].皮革科学与工程,2024,34(6):9-15,7.基金项目
国家自然科学基金(U21A20304) （U21A20304）
