铁-三联吡啶配合物活化高碘酸盐体系构建及其对染色废水的催化降解机制  

Construction of catalytic system by FeⅢ(tpy)Cl3 complexes-activated periodate and its catalytic degradation mechanism for dyeing wastewater

作　　者：武守营 黄启超 张开封 张琳萍 钟毅[1,2,3] 徐红[1,2,3] 毛志平 WU Shouying;HUANG Qichao;ZHANG Kaifeng;ZHANG Linping;ZHONG Yi;XU Hong;MAO Zhiping(College of Chemistry and Chemical Engineering,Donghua University,Shanghai 201620,China;Key Laboratory of Science and Technology of Eco-Textile,Ministry of Education,Donghua University,Shanghai 201620,China;National Innovation Center of Advanced Dyeing&Finishing Technology,Shandong Zhongkang Guochuang Research Institute of Advanced Dyeing&Finishing Technology Co.,Ltd.,Taian,Shandong 271000,China)

机构地区：[1]东华大学化学与化工学院,上海201620 [2]东华大学生态纺织教育部重点实验室,上海201620 [3]山东中康国创先进印染技术研究院有限公司国家先进印染技术创新中心,山东泰安271000

出　　处：《纺织学报》2024年第6期105-112,共8页Journal of Textile Research

基　　金：中央高校基本科研业务费专项资金资助项目(2232023G-04)。

摘　　要：为开发新型、高效的染色废水处理方法,通过铁-三联吡啶(Fe^(Ⅲ)(tpy)C_(l3))配合物活化高碘酸盐(PI)构建了Fe^(Ⅲ)(tpy)C_(l3)/PI催化氧化体系。在此基础上,采用酸性红1(AR1)作为染色废水模型污染物测试了该体系的催化降解性能,并通过捕获和探针实验研究了Fe^(Ⅲ)(tpy)C_(l3)配合物活化PI降解酸性红1的机制。结果表明:Fe^(Ⅲ)(tpy)C_(l3)配合物能够高效活化PI实现酸性红1的快速降解,15 min内对AR1的去除率高达98%;Fe^(Ⅲ)(tpy)C_(l3)/PI体系对酸性红1的降解符合伪一级动力学模型,同时酸性红1的降解速率常数随Fe^(Ⅲ)(tpy)C_(l3)配合物和PI浓度的增加而呈线性增加;在Fe^(Ⅲ)(tpy)C_(l3)/PI体系中包含超氧自由基、单线态氧以及高价铁,这些活性物质共同促进酸性红1的降解;该体系不仅对多种有机物的降解表现出普适性,同时催化降解过程不受溶液pH值以及常见无机盐离子的干扰。Objective The dyeing wastewater poses a threat to the ecological environment.Advanced oxidation processes(AOPs)exhibit excellent oxidation efficiency in wastewater treatment.The solid-state and stability of periodate(PI)make it obtained wide attention.As a result,PI-based AOPs are gradually gaining research and being tried for the treatment of dyeing wastewater.However,current transition metal-based activators for PI often require larger doses to obtain the desired effect,which undoubtedly increases the cost of wastewater treatment.Metal coordination complexes are applied similarly to biological enzymes,with trace and efficient application effects.This study aimed to construct a novel catalytic system by activating PI by Fe^(Ⅲ)(tpy)C_(l3) complex to investigate its application prospects in wastewater treatment and to elucidate the catalytic mechanism.Method The catalytic degradation performance of the Fe^(Ⅲ)(tpy)C_(l3)/PI system was tested using the dye Acid Red 1(AR1)as the target pollutant.The effects of catalyst and oxidant dosage,pH,and temperature on the catalytic performance of this system were explored.Meanwhile,the catalytic mechanism of the system was investigated by capture and probe experiments.Moreover,the practical application prospects of the system were evaluated by testing the degradation efficiency of various organics and the resistance to inorganic salt ions.Results The result showed that the Fe^(Ⅲ)(tpy)C_(l3) complexes have excellent activation effects on PI,which could remove 98%of AR1 within 15 min.More importantly,the performance of the Fe^(Ⅲ)(tpy)C_(l3)/PI system is much higher than that of the previously reported Fe^(Ⅲ)(tpy)C_(l3)/H2O2 system.Meanwhile,the test results show that the concentration of Fe^(Ⅲ)(tpy)C_(l3) and PI has a great influence on the performance of the Fe^(Ⅲ)(tpy)C_(l3)/PI system.In detail,the degradation of AR1 in the Fe^(Ⅲ)(tpy)C_(l3)/PI system is following the pseudo-first-order kinetic model,while the rate constant of AR1 degradation increase linearly

关 键 词：配合物 高碘酸盐 染色废水 降解 催化机制 废水处理 铁-三联吡啶 

分 类 号：TS190.3[轻工技术与工程—纺织化学与染整工程] O643.3[轻工技术与工程—纺织科学与工程]