钢铁冶金废渣活化过硫酸盐降解丁基黄药  

Degradation of Butyl Xanthate Using Persulfate Activated with Iron and Steel Metallurgical Slag

作　　者：李美杭 苗思雨 张巍巍 胡恩柱 LI Mei-hang;MIAO Si-yu;ZHANG Wei-wei;HU En-zhu(School of Metallurgy,Northeastern University,Shenyang 110819,China;Key Laboratory of Regional Environment and Eco-Remediation,Ministry of Education,Shenyang University,Shenyang 110044,China.)

机构地区：[1]东北大学冶金学院,辽宁沈阳110819 [2]沈阳大学区域污染环境生态修复教育部重点实验室,辽宁沈阳110044

出　　处：《东北大学学报（自然科学版）》2024年第2期187-192,共6页Journal of Northeastern University(Natural Science)

基　　金：国家重点研发计划项目(2020YFC1806400,2018YFC1801200);辽宁省“兴辽英才计划”项目(XLYC2007127);中央高校基本科研业务费专项资金资助项目(N2225037).

摘　　要：以钢铁冶金废渣(钢渣、含钛高炉渣、提钒尾渣)活化过硫酸盐降解水中的丁基黄药.分析了废渣种类与用量、过硫酸盐浓度、初始pH等因素对丁基黄药降解效能的影响,采用双因素方差分析揭示了不同因素之间的交互特征.结果表明丁基黄药的降解率随废渣用量和过硫酸盐浓度增加而增大.在废渣用量1 g/L,过硫酸盐浓度为0.5 mmol/L,反应时间96 h时,钢渣、含钛高炉渣、提钒尾渣活化过硫酸钠对丁基黄药的降解率分别可达96.47%,97.70%和95.12%.三种废渣活化效能分别在碱性、近中性和酸性条件下达到最优.其中钢渣活化以非自由基(^(1)O_(2))和SO_(4)·-,HO·共同作用;含钛高炉渣以^(1)O_(2)为主,伴随着HO·的产生;提钒尾渣则仅以^(1)O_(2)为主.Butyl xanthate in water was degraded by persulfate activated with iron and steel metallurgical slags,including steel slag,Ti-bearing blast-furnace slag and vanadium tailings.The effects of slag types and dosage,persulfate concentration and initial pH value on the degradation efficiency of butyl xanthate were analyzed.Two-way ANOVA was used to reveal the interaction characteristics between the factors.The results showed that the degradation rate of butyl xanthate increases with the increase of the slag dosage and persulfate concentration.Under the condition of 1 g/L slag,0.5 mmol/L persulfate,reaction time of 96 h,the degradation rate of butyl xanthate reaches 96.47%,97.70%and 95.12%with the application of steel slag,Ti-bearing blast-furnace slag and vanadium tailings,respectively.The optimal pH conditions for the above three slags are alkaline,near neutral and acid,respectively.The reactive constituents include non-free radical(^(1)O_(2)),SO_(4)•-and HO•with the activation of steel slag.The activation of Ti-bearing blast-furnace slag is dominated by both(1)O_(2)and HO•.Nevertheless,the dominant reactive constituent for the activation of vanadium tailings is(1)O_(2).

关 键 词：过硫酸盐 丁基黄药 钢渣 含钛高炉渣 提钒尾渣 

分 类 号：X53[环境科学与工程—环境工程]