纳米零价铁、负载生物炭材料及相关复合催化剂合成的可行性研究  

Feasibility study on the synthesis of nano zero-valent iron,supported biochar materials and related composite catalysts

作　　者：孟范金 孙述海[1] 肖晶晶 MENG Fanjin;SUN Shuhai;XIAO Jingjing(Changchun Institute of Technology,Changchun 130021,Jilin,China;Liaoyuan Ecological and Environmental Protection Comprehensive Administrative Law Enforcement Detachment,Liaoyuan 136299,Jilin,China)

机构地区：[1]长春工程学院,吉林长春130021 [2]辽源市生态环境保护综合行政执法支队,吉林辽源136299

出　　处：《吉林地质》2024年第2期92-95,共4页Jilin Geology

基　　金：吉林省科学技术厅重点研发项目(20200403027SF);吉林省教育厅“十三五”科学技术研究项目(JJKH20191270KJ)。

摘　　要：过硫酸盐高级氧化技术被广泛应用于石油烃污染土壤事件,纳米零价铁可作为催化剂,提高过硫酸盐的氧化能力及效率。生物炭(BC)负载纳米零价铁(nZVI)可减少纳米零价铁的团聚和氧化现象,通过液相还原法制备BC-nZVI,采用扫描电子显微镜、透射电子显微镜、傅里叶红外光谱等观察nZVI和BC-nZVI的表观形貌、结构形态、官能团等特性。试验结果表明:生物炭可有效防止纳米零价铁的团聚现象,同时提供了纳米零价铁的分散能力,改性后的生物炭比表面积增加,更有利于纳米零价铁的附着。研究结果对实际工程中过硫酸盐高级氧化技术修复石油烃污染土壤选取催化剂具有一定的参考价值。Advanced oxidation technology of persulfate has been widely used in petroleum hydrocarbon contamination of soil events.Nano zero-valent iron can be used as catalyst to improve the oxidation capacity and efficiency of persulfate.Biochar(BC)loaded with nano-zero(nZVI)ferric can reduce the agglomeration and oxidation of nano-zero ferric.Bc-nZVI was prepared by liquid phase reduction method.The apparent morphology,structural morphology and functional groups of nZVI and BC-nZVI were observed by scanning electron microscopy,transmission electron microscopy and Fourier infrared spectroscopy.The experimental results show that biochar can effectively prevent the agglomeration phenomenon of nano zero-valent iron,and provide the dispersion ability of nano zero-valent iron.The modified biochar is more conducive to the adhesion of zero-valent iron nanoparticles by increasing the specific surface area.The research results have a certain reference value for selecting catalysts for remediation of petroleum hydrocarbon polluted soil by advanced persulfate oxidation technology in practical engineering.

关 键 词：纳米零价铁 过硫酸钠 土壤修复 

分 类 号：X703.1[环境科学与工程—环境工程]