铁镍尖晶石硫化物催化过硫酸盐处理四环素废水  

Persulfate activation through iron-nickel spinel sulfide(FeNi_(2)S_(4))for tetracycline wastewater treatment

作　　者：郭帅广 王冠龙 郝军 张新欣 孙德栋 GUO Shuaiguang;WANG Guanlong;HAO Jun;ZHANG Xinxin;SUN Dedong(School of Light Industry and Chemical Engineering,Dalian Polytechnic University,Dalian 116034,China)

机构地区：[1]大连工业大学轻工与化学工程学院,辽宁大连116034

出　　处：《大连工业大学学报》2025年第2期132-137,共6页Journal of Dalian Polytechnic University

基　　金：辽宁省教育厅高等学校基本科研项目(LJKQZ2021116)。

摘　　要：采用水热法制备了铁镍尖晶石硫化物(FeNi_(2)S_(4))催化剂;利用XRD、EDS、SEM和FT-IR对FeNi_(2)S_(4)催化剂的结构和表面形貌进行表征;以盐酸四环素溶液为污染物模型,通过研究FeNi_(2)S_(4)催化剂活化过一硫酸盐降解盐酸四环素评价其催化活性。实验结果表明,在室温条件下,加入100mg/L催化剂、400mg/L氧化剂,在60min内15mg/L盐酸四环素的降解效率达到93.1%。自由基猝灭实验及电子顺磁共振分析表明,FeNi_(2)S_(4)活化过一硫酸盐产生的硫酸根自由基、羟基自由基、单线态氧和超氧自由基均参与了盐酸四环素的去除过程。催化剂历经4次循环后降解盐酸四环素效率仍能达到88.1%。FeNi_(2)S_(4)具有良好的重复利用性能,是用于污水处理的有效催化剂。Iron nickel spinel sulfide(FeNi_(2)S_(4))catalysts were prepared by a hydrothermal method.The structure and surface morphology of the FeNi_(2)S_(4)catalyst were characterized by XRD,EDS,SEM and FT-IR.The catalytic activity of FeNi_(2)S_(4)for activating peroxymonosulfate to degrade tetracycline hydrochloride(TCH)was evaluated using TCH as a pollutant model.The experimental results showed that the degradation efficiency of 15 mg/L TCH reached 93.1%within 60 min at room temperature with the addition of 100 mg/L catalyst and 400 mg/L oxidant.Radical quenching experiments and electron paramagnetic resonance(EPR)analyses demonstrated that sulfate radicals,hydroxyl radicals,singlet oxygen and superoxide radicals generated by activated PMS with FeNi_(2)S_(4)all involved in the removal process of TCH.The degradation efficiency of TCH by the catalyst still reached 88.1%after four cycles.FeNi_(2)S_(4)shows good reusability and is an effective catalyst for wastewater treatment.

关 键 词：尖晶石硫化物 过一硫酸盐 盐酸四环素 废水处理 

分 类 号：X703.5[环境科学与工程—环境工程]