| 超声波强化零价铁/过硫酸钾体系处理柠檬酸镍络合废水 |
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| 引用本文： | 肖泉,田凯勋,付显婷,郑波.超声波强化零价铁/过硫酸钾体系处理柠檬酸镍络合废水[J].环境科学学报,2018,38(10):4006-4012. |
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| 作者姓名： | 肖泉 田凯勋 付显婷 郑波 |
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| 作者单位： | 湘潭大学环境与资源学院复杂重金属废水高效净化与应用技术湖南省工程实验室 |
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| 基金项目： | 湖南省教育厅创新平台开放基金项目（No.16K087）；湖南省重点研发计划项目（No.2018SK2018） |
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| 摘 要： | 以柠檬酸镍络合废水为目标废水,考察了超声波(US)强化零价铁(Fe~0)/过硫酸钾(PS)体系的初始pH、过硫酸钾用量(C_(PS))、超声波功率、零价铁与过硫酸钾质量比(m)、零价铁粒径(d_(Fe~0))对镍去除的影响.结果表明,在超声波功率为600 W,pH为3,过硫酸钾用量为0.45g·L~(-1),Fe~0∶PS(质量比)为0.8,零价铁粒径为75μm的条件下反应60 min时,镍的去除率可以达到100%.不同体系的对照实验和反应前后零价铁SEM、EDS分析结果表明,US/Fe~0/PS体系效果明显优于US/Fe~0、US/PS和Fe~0/PS体系,超声波对Fe~0/PS体系具有强化作用,能促进零价铁持续释放具有催化作用的Fe~(2+).最后,通过红外光谱和紫外光谱分析了柠檬酸镍破络机理.TOC变化规律表明,体系矿化速率低于体系中柠檬酸的降解速率,说明柠檬酸镍降解首先是一个快速破络过程,随后是破络后的中间产物进一步降解矿化.
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| 关 键 词： | 超声波 零价铁/过硫酸钾体系 柠檬酸镍络合废水 破络 |
| 收稿时间： | 2018/2/9 0:00:00 |
| 修稿时间： | 2018/4/4 0:00:00 |
Treatment of nickel citrate complex wastewater by zero-valent iron/potassium persulfate system with ultrasonic enhancement |
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| XIAO Quan,TIAN Kaixun,FU Xianting and ZHENG Bo.Treatment of nickel citrate complex wastewater by zero-valent iron/potassium persulfate system with ultrasonic enhancement[J].Acta Scientiae Circumstantiae,2018,38(10):4006-4012. |
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| Authors: | XIAO Quan TIAN Kaixun FU Xianting and ZHENG Bo |
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| Institution: | Hunan Engineering Laboratory for Complex Heavy Metal Wastewater Purification and Application Technology, College of Environment and Resources, Xiangtan University, Xiangtan 411105,Hunan Engineering Laboratory for Complex Heavy Metal Wastewater Purification and Application Technology, College of Environment and Resources, Xiangtan University, Xiangtan 411105,Hunan Engineering Laboratory for Complex Heavy Metal Wastewater Purification and Application Technology, College of Environment and Resources, Xiangtan University, Xiangtan 411105 and Hunan Engineering Laboratory for Complex Heavy Metal Wastewater Purification and Application Technology, College of Environment and Resources, Xiangtan University, Xiangtan 411105 |
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| Abstract: | |
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| Keywords: | ultrasonic zero-valent iron/potassium persulfate system nickel citrate complex wastewater break complex |
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