Estimation of Chemical Forms of Heavy Metals in Fly Ash
Estimation of Chemical Forms of Heavy Metals in Fly Ash
批准号:
08650647
负责人:
TAKEDA Nobuo
金额:
$1.28万
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:
1996
资助国家:
日本
项目状态:
已结题
起止时间:
1996 至 1998
中文摘要
为了解垃圾焚烧飞灰中重金属的化学形态和含量,对垃圾焚烧飞灰的无害化处理和资源化利用以及二恶英在飞灰上的从头合成等复杂反应机理进行了研究,采用X射线光电子能谱(XPS)、X射线衍射、连续萃取法和热力学方法对飞灰中重金属的化学形态进行了分析。测定了飞灰中锌、铜、铅和镉的毒性和含量,X射线衍射分析法不能有效地预测飞灰中重金属的化学形态。利用重金属在飞灰表面富集、XPS强度高的特点,采用XPS分析了多种飞灰中重金属的化学形态,并采用连续提取法,研究了飞灰中重金属与其组成的关系,将各分析结果综合起来,飞灰中锌的主要化合物为2ZnCO_33Zn(OH)_2、ZnSO_47H_2O和ZnO,还有PbCl_2、PbCO_3、PbO等化合物,结果表明,干法烟气处理飞灰中镉的存在形态(Cd(OH)_2,CdO)与湿法烟气处理飞灰中镉的存在形态不同(CdSO_4,CdCl_2),分别用XPS法和连续萃取法测定了飞灰中重金属的化学形态,但是认为通过两种方法的组合能够增加估计的精确度。
英文摘要
It is very important to know chemical forms and concentration of heavy metals in fly ash from municipal solid waste incinerator in order to detoxify and reuse it or clarify complex reaction mechanism such as de novo synthesis for dioxin on it. Chemical forms of heavy metals were estimated using X-ray Photoelectron Spectroscopy (XPS), X-ray diffraction, sequential extraction procedure and thermo-dynamics study. Zinc, copper, lead and cadmium were measured for its toxicity and concentration in fly ash.The application of X-ray diffraction analysis for heavy metals in fly ash was not effective to estimate chemical forms. Chemical forms of heavy metals in many kinds of fly ash were estimated by XPS, because heavy metals concentrated onto its surface and higher intensity was obtained for XPS.Sequential extraction procedure was used for the purpose of grasping the relationship between heavy metals and the composition in fly ash keeping heavy metals.Putting the results by each analysis together, the dominant zinc compounds in fly ash were 2ZnCO_3 3Zn(OH)_2, ZnSO_4 7H_2O and ZnO.Many compounds such as PbCl_2, PbCO_3, PbO, etc., were estimated and it is impossible to determine a dominant form in it. The dominant copper compound was CuO.Chemical form of cadmium in fly ash of dry process flue-gas treatment (Cd(OH)_2, CdO) was different from that of wet process flue-gas treatment (CdSO_4, CdCl_2).Estimation of chemical form of heavy metals in fly ash is possible by XPS and sequential extraction procedure respectively, but it is considered to be able to increase the exactitude of estimation by the combination of both methods.
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高岡 昌輝: "飛灰中重金属の形態同定に関する研究" 環境衛生工学研究. 11・3. 53-58 (1997)
高冈正树:“飞灰中重金属的形态鉴定研究”环境卫生工程研究11・3(1997)。
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发表时间:
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作者:
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通讯作者:
蔵本康宏: "飛灰中重金属の形態同定に関する研究" 環境衛生工学研究. 11・3. 53-58 (1997)
仓本泰宏:“飞灰中重金属的形态鉴定研究”环境卫生工程研究11・3(1997)。
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发表时间:
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作者:
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通讯作者:
Masaki TAKAOKA: "Identification of Chemical Form of Heavy Metals in Flyash" Environmental & Sanitary Engineering Research. Vol.11-3. 53-58 (1997)
高冈正树:《粉煤灰中重金属化学形态的鉴定》环境
DOI:
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发表时间:
期刊:
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作者:
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通讯作者:
蔵本 康宏: "飛灰中重金属の形態同定に関する研究" 環境衛生工学研究. 11巻3号. 53-58 (1997)
仓本泰弘:“飞灰中重金属的形态鉴定研究”,《环境卫生工程研究》,第11卷,第3期。53-58(1997)。
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作者:
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通讯作者:
Establishment of life cycle monitoring of CFRP structures
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批准号:23246146
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项目类别:Grant-in-Aid for Scientific Research (A)
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资助金额:$30.95万
-
财政年份:2011
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负责人:TAKEDA Nobuo
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依托单位:
Removal of PCDDs/DFs and PCBs from contaminated sediment using liquefied dimethyl ether as an extractant.
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资助金额:$11.98万
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财政年份:2008
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负责人:TAKEDA Nobuo
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依托单位:
Optical Fiber Sensor Monitoring System of Composite Structures for Damage Tolerance Design
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批准号:18106014
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Structural Health Monitoring of Composite Cryogenic Propellant Tanks Using Optical Fiber Sensors
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财政年份:2003
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负责人:TAKEDA Nobuo
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依托单位:
Removal of Organohalogen Compounds and Recovery of Heavy Metals from Municipal Solid Waste Incineration Fly Ash by Column Flotation
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批准号:14208071
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项目类别:Grant-in-Aid for Scientific Research (A)
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资助金额:$18.05万
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财政年份:2002
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负责人:TAKEDA Nobuo
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依托单位:
Development studies on in-situ observation apparatus of microscopic damage for durability evaluation of high-temperature composites under HSCT simulated environment
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批准号:13355035
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依托单位:
Structural Health Monitoring of CFRP Laminates : Development of 90-degree Crack Detection and Suppression System
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批准号:13450397
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项目类别:Grant-in-Aid for Scientific Research (B)
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资助金额:$9.54万
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财政年份:2001
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负责人:TAKEDA Nobuo
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依托单位:
The University of Tokyo
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批准号:09555198
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项目类别:Grant-in-Aid for Scientific Research (B)
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资助金额:$7.87万
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财政年份:1997
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负责人:TAKEDA Nobuo
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依托单位:
Rate Dependent Compressive Strength of Polymer Composites
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批准号:08044124
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项目类别:Grant-in-Aid for international Scientific Research
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资助金额:$4.54万
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财政年份:1996
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负责人:TAKEDA Nobuo
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依托单位:
Studies on Identification of Mechanical Loading Applied to Composite Plates Using Distributed Fiber Optic Sensors
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批准号:07455391
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项目类别:Grant-in-Aid for Scientific Research (B)
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资助金额:$4.67万
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财政年份:1995
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负责人:TAKEDA Nobuo
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依托单位:
Separation and Recovery of Heavy Metals in Incinerator Fly Ash by Chloride Volatilization
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批准号:07555464
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项目类别:Grant-in-Aid for Scientific Research (A)
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资助金额:$0.45万
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财政年份:1995
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负责人:TAKEDA Nobuo
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依托单位:
Development of Evaluation Methods for Microscopic Damage Initiation and Growth in Composite Material Systems for Simultaneous Material/Structure Optimization
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批准号:06555291
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项目类别:Grant-in-Aid for Developmental Scientific Research (B)
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资助金额:$6.59万
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财政年份:1994
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负责人:TAKEDA Nobuo
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依托单位:
Measurement and control of organohalogen compounds in waste incineration.
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批准号:05650523
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项目类别:Grant-in-Aid for General Scientific Research (C)
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资助金额:$1.54万
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负责人:TAKEDA Nobuo
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依托单位:
Experimental Studies on Micro-fracture Mechanics of High-Temperature Polymer Matrix Composites
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批准号:04452111
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资助金额:$4.29万
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负责人:TAKEDA Nobuo
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依托单位:
Developmental Research on Uniaxial Impact Testing Machines with Arbitrary Input Pulse Conrol Capability for Characterization of Impact Damage Progress in Composites
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批准号:03555012
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财政年份:1991
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负责人:TAKEDA Nobuo
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依托单位:
In-situ Observation Techniques for Interfacial Strength Properties of Continuous Ceramic Fiber Reinforced Ceramic Matrix Composites
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批准号:02452090
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项目类别:Grant-in-Aid for General Scientific Research (B)
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资助金额:$4.42万
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财政年份:1990
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负责人:TAKEDA Nobuo
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依托单位:
Production and Destruction of Toxic Chemicals in Plastics Combustion
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批准号:63550395
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资助金额:$1.66万
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财政年份:1988
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负责人:TAKEDA Nobuo
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依托单位: