| 超声辐射协同草酸-HEDTA浸提污泥中重金属 |
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| 引用本文： | 涂剑成,赵庆良,杨倩倩.超声辐射协同草酸-HEDTA浸提污泥中重金属[J].中国环境科学,2011,31(8):1280-1284. |
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| 作者姓名： | 涂剑成 赵庆良 杨倩倩 |
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| 作者单位： | 哈尔滨工业大学市政环境工程学院,城市水资源与水环境国家重点实验室,黑龙江哈尔滨150090 |
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| 基金项目： | 国家水体污染控制与治理科技专项课题(2009ZX07317-008) |
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| 摘 要： | 利用超声波辐射协同草酸-羟乙基替乙二胺三乙酸(HEDTA)浸提城市污泥中重金属Cu、Zn、Cr、Ni,研究了超声辐射时间、功率密度、搅拌作用对Cu、Zn、Cr、Ni浸出的影响,并利用Tessier连续浸提法分析了超声波协同草酸-HEDTA浸提对污泥中重金属形态的影响.结果表明,随着超声时间、功率密度的增加和污泥搅动,污泥中Cu、Cr和Ni的浸提率呈上升趋势, Zn的浸提率无明显提高.污泥在超声辐射浸提处理后,Cu、Cr、Ni的有机物结合态和残渣态含量下降,金属离子可交换态和碳酸盐结合态含量有所增加,Zn的形态无明显变化.
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| 关 键 词： | 污泥 重金属 超声辅助 浸提 形态. |
| 收稿时间： | 2010-11-07; |
Ultrasonic-assisted extraction of Cu,Zn,Ni and Cr in municipal sludge with oxalic acid and HEDTA |
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| TU Jian-cheng,ZHAO Qing-liang,YANG Qian-qian.Ultrasonic-assisted extraction of Cu,Zn,Ni and Cr in municipal sludge with oxalic acid and HEDTA[J].China Environmental Science,2011,31(8):1280-1284. |
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| Authors: | TU Jian-cheng ZHAO Qing-liang YANG Qian-qian |
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| Institution: | TU Jian-cheng,ZHAO Qing-liang,YANG Qian-qian(1.State Key Laboratory of Urban Water Resources and Environment,School of Municipal and Environmental Engineering,Harbin Institute of Technology,Harbin 150090,China) |
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| Abstract: | Ultrasonic was applied to enhance extraction of heavy metals in municipal sludge with oxalic acid and hydroxyethyl ethylenediamine triacetic acid(HEDTA).The effects of ultrasonic radiation time,power intensity and stirring on extraction of heavy metals were investigated.Moreover,the transformation of heavy metal speciation in municipal sludge was analyzed by the application of tessier's sequential extraction procedure.In general,the extraction ratios of Cu,Ni and Cr in sludge were improved with the increasi... |
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| Keywords: | sludge heavy metals ultrasonic assisted extraction speciation |
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