Restoration Technique for Heavy Metal Polluted Soil by Use of Hydrothermally-Treated Microargae, Chrollera

水热处理微藻Chrollera修复重金属污染土壤技术

基本信息

  • 批准号:
    12680574
  • 负责人:
  • 金额:
    $ 2.24万
  • 依托单位:
  • 依托单位国家:
    日本
  • 项目类别:
    Grant-in-Aid for Scientific Research (C)
  • 财政年份:
    2000
  • 资助国家:
    日本
  • 起止时间:
    2000 至 2001
  • 项目状态:
    已结题

项目摘要

Recently, the heavy metal pollution of soil for the site of chemical factory and metal-refining factory have been frequently in trouble. Also, the landfill of fossil fuel ash and municipal incineration ash have caused the pollution of soil and groundwater. In this study, the leaching removal of heavy metals from polluted soil, coal fly ash, and incineration ash was performed by use of hydrothermally-treated natural products, which are abundantly present but so far unused. Firstly, hydrothermally-treated microalga cell (cellulose) were tested, however the resulting matter did not show good leaching ability. Then, pectin, which has a carboxyl group within a molecule, was hydrothermally-treated at various temperature (130-220℃), and the resulting matter was used for a leaching agent. When the treating temperature was 175℃, the best leaching ability for heavy metals in some reference standards of polluted soil was obtained. Such a biochelating agent also effectively worked for the leaching of arsenic from coal fly ash and municipal incineration ash. A squeeze residue of mandarin orange, which contains a lot of pectin, was hydrothermally-treated, and the resulting matter showed a leaching ability similar to that for the hydrothermally-treated pectin. Further, the selective recovery of arsenic from the leaching waste was attempted. It was found that an aluminium-loaded Shirasu-zeolite, which was prepared from an unused resource, Shirasu, in Kagoshima Prefecture, worked as an effective adsorbent for arsenic.
近年来,化工厂和金属冶炼厂场地土壤重金属污染问题频频发生。此外,化石燃料灰和城市焚烧灰的填埋也造成了土壤和地下水的污染。在这项研究中,从污染的土壤,粉煤灰,焚烧灰中的重金属的浸出去除进行水热处理的天然产品,这是丰富的,但迄今未使用。首先,水热处理的微孔(纤维素)进行了测试,但所得的物质没有显示出良好的浸出能力。然后,在不同温度(130-220℃)下水热处理分子内具有羧基的果胶,并将所得物质用作浸出剂。当处理温度为175℃时,对污染土壤中重金属的淋溶效果最好。这种生物螯合剂也有效地用于从粉煤灰和城市焚烧灰中浸出砷。对含有大量果胶的柑桔橙子压榨残渣进行水热处理,所得物质表现出与水热处理果胶相似的浸出能力。此外,还尝试了从浸出废物中选择性地回收砷。研究发现,从鹿儿岛县未利用的资源白砂中制备的载铝白砂沸石可作为砷的有效吸附剂。

项目成果

期刊论文数量(6)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
X.-H.Xu, T.Nakajima, A.Ohki: "Leaching of Arsenic from Coal Fly Ashes. 2. Arsenic Pre-leaching with Sodium Gluconate Solution"Toxicological and Environmental Chemistry. 81. 69-80 (2001)
X.-H.Xu、T.Nakajima、A.Ohki:“从煤飞灰中浸出砷。2.用葡萄糖酸钠溶液预浸砷”毒理学和环境化学。
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    0
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  • 通讯作者:
Y.-H.Xu, T.Nakajima, A.Ohki: "Adsorption and Removal of Arsenic(V) from Drinking Water by Aluminium-Loaded Shirasu-Zeolite"Journal of Hazardous Materials. B92. 275-287 (2002)
Y.-H.Xu、T.Nakajima、A.Ohki:“铝负载 Shirasu 沸石对饮用水中砷 (V) 的吸附和去除”有害物质杂志。
  • DOI:
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    0
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  • 通讯作者:
Y.H.Xu, T.Nakajima, A.Ohki: "Adsorption and removal of arsenic(V) from drinking water by aluminium-loaded Shirasu-zeolite"Journal of Hazardous Chemistry. (印刷中).
Y.H.Xu、T.Nakajima、A.Ohki:“通过负载铝的 Shirasu 沸石吸附和去除饮用水中的砷 (V)”危险化学杂志(正在出版)。
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    0
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OHKI Akira其他文献

OHKI Akira的其他文献

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{{ truncateString('OHKI Akira', 18)}}的其他基金

Fate of mercury and selenium contained in fish in the recycle of fishery product wastes
鱼中汞和硒在水产品废物回收中的去向
  • 批准号:
    22350069
  • 财政年份:
    2010
  • 资助金额:
    $ 2.24万
  • 项目类别:
    Grant-in-Aid for Scientific Research (B)
Change in chemical form of mercury in fish meat during the recycling process of food waste
餐厨垃圾回收过程中鱼肉中汞化学形态的变化
  • 批准号:
    19550151
  • 财政年份:
    2007
  • 资助金额:
    $ 2.24万
  • 项目类别:
    Grant-in-Aid for Scientific Research (C)
Simple Speciation Technique for Arsenic and Antimony in Waste Material Recycling Processes
废物回收过程中砷和锑的简单形态分析技术
  • 批准号:
    16550079
  • 财政年份:
    2004
  • 资助金额:
    $ 2.24万
  • 项目类别:
    Grant-in-Aid for Scientific Research (C)
Development of Advanced Cleaning Technology for Hazardous Heavy Metals in Coal
煤中有害重金属先进净化技术开发
  • 批准号:
    11218209
  • 财政年份:
    1999
  • 资助金额:
    $ 2.24万
  • 项目类别:
    Grant-in-Aid for Scientific Research on Priority Areas
Application of Novel Separation Field, Polymer Aggregate, to Capillary Electrophoresis
新型分离场聚合物聚集体在毛细管电泳中的应用
  • 批准号:
    10650799
  • 财政年份:
    1998
  • 资助金额:
    $ 2.24万
  • 项目类别:
    Grant-in-Aid for Scientific Research (C)

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