Heavy metal dissolution from fly and bottom ashes, and the evaluation of performance for heavy metal sorption by clay barrier materials in land fill sites

飞灰和底灰中重金属的溶解以及垃圾填埋场粘土屏障材料吸附重金属的性能评价

• 批准号: 15380167
• 负责人: OHTSUBO Masami
• 金额: $ 9.98万
• 依托单位: KYUSHU UNIVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2003
• 资助国家: 日本
• 起止时间: 2003 至 2005
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-15380167/
• 关键词: bottom ash; heavy metal; salinity; clay barrier; clay liner; sorption; permeability; bentonite; 粘土バリアー; 透水性; 遮水

The major heavy metals in the leachate for fly and bottom ash collected from a incineration plant was Pb, Cu and Zn, and their concentration level was different according to the solution pH for leaching. The dominant salt in the leachate were Na K, and Ca, which amounted to 800 mg/L in Na and K at an initial leaching stage.The column leaching for bentonite (5%)-added soil indicated that sorption capability for Pb was greater in volcanic soil with allophone than basalt soil with halloysite. For Pb retention, carbonate and exchangeable phase was predominant for the volcanic soil and metal oxides were for the basalt soil. In a column test for marine clay, Pb in pore water accumulated in the top layer of the column soil for the pure water while distributed throughout depth for sea water and ash leachate.

某焚烧厂飞灰和底灰渗滤液中的主要重金属是铅、铜和锌，其浓度水平因浸出溶液pH的不同而不同。渗滤液中的主要盐类是Na、K和Ca，在淋溶初期Na、K的含量高达800 mg/L。添加5%膨润土的土壤柱淋滤试验表明，添加变音素的火山岩土壤对铅的吸附能力大于添加埃洛石的玄武岩土壤。火山岩土壤以碳酸盐和交换相为主，玄武岩土壤以金属氧化物为主。在海相粘土的柱状试验中，孔隙水中的铅在柱状土壤的表层积累，对于纯水而言，而对于海水和灰场渗滤液，则分布在整个深度。

项目成果

Leachiability of municipal solid waste ashes in simulated landfill conditions

模拟垃圾填埋场条件下城市固体废物灰烬的浸出率

• 发表时间: 2006
• 期刊: Waste Management (in print)
• 作者: Li;L.Y.;Ohtsubo;M.;Yamaoka;S.;Higashi;T.
• 通讯作者: T.

粘土ライナー材としてのベントナイト混合土の重金属吸着特性

膨润土混合土作为粘土衬垫材料的重金属吸附性能

• 发表时间: 2005
• 期刊: 農業土木学会論文集 238
• 作者: 山岡伸也;大坪政美;東 孝寛;Li;Loretta
• 通讯作者: Loretta

Effect of salt concentration on the hydraulic conductivity of the mixtures of basal soil and various bentonites

盐分浓度对基底土与各种膨润土混合物导水率的影响

• 发表时间: 2006
• 期刊: Journal of the Faculty of Agriculture, Kyushu University 51-1
• 作者: Mishra;A.K.;Ohtsubo;M.;Li;L;Higashi;T.
• 通讯作者: T.

Sorption of heavy metal in suspended and compact volcanic ash soil

悬浮致密火山灰土对重金属的吸附

• 发表时间: 2004
• 期刊: Journal of the Japanese Geotechnical Society 45(4)
• 作者: Yamaoka;S.;Ohtsubo;M.;Higashi;T.;Li;L
• 通讯作者: L

Effect of salt concentrations on the permeability and compressibility of soil and-bentonite mixtures

盐浓度对土壤和膨润土混合物的渗透性和压缩性的影响

• 发表时间: 2005
• 期刊: Journal of Faculty of Agriculture, Kyushu University 50(2)
• 作者: Mishra;A.;K.Ohtsubo;M.;LI;L;Higashi;T.
• 通讯作者: T.