Fundamental study on efficiency and safety of washing-reagent-injection as a remediation technique for soil and groundwater pollution

水洗药剂注入土壤和地下水污染修复技术的高效性和安全性基础研究

• 批准号: 15510083
• 负责人: INABA Kazuho
• 金额: $ 2.43万
• 依托单位: National Institute for Environmental Studies
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2003
• 资助国家: 日本
• 起止时间: 2003 至 2006
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-15510083/
• 关键词: soil and groundwater pollution; washing-reagent-injection method; chlorinated organic solvents; surfactants; high-molecular-weight organic compounds; solubility enhancement; gravity-driven migration; reductive dechloroination decomposition; レメディエー

To learn efficiency and safety of washing-reagent-injection, a new soil/groundwater remediation technique for chlorinated organic solvent pollution, the effects of coexisting surfactants and high-molecular-weight organic compounds on the water solubility of trichloroethylene (TCE), the gravity-driven migration behavior of TCE in a glass-bead-packed column, and the reductive dechlorination decomposition of TCE with zerovalent iron powder were investigated.The effect of reagent type and concentration on TCE solubility and migration behavior in glass-bead-packed columns appeared severally each other. Several of the surfactants drastically increased the solubility of TCE, but some surfactants and the high-molecular-weight organic compounds had no effect on TCE solubility. The migration behaviors of undiluted TCE in the washing-reagent-saturated columns differed substantially for the tested chemicals. Some of the surfactants introduced rapid gravity-driven migration over a wide range of con … More centrations.During the dechlorination reaction, the amount of TCE decreased, and the formation of cis-1,2-dichloroethylene was observed. The decomposition of TCE was found to be first order with respect to the-TCE and zerovalent iron concentrations when the solution contained no additives. The rates of decomposition of TCE in the presence of the additives were lower than the rate in the absence of the additives: the rate constant was reduced by a factor of 0.7 for the cationic surfactant cetyltrimethylammonium bromide; by a factor of 0.5 for the anionic surfactants sodium n-dodecylbenzenesulfonate, sodium n-dodecylsulfate, and sodium n-dodecanesulfonate and for the high-molecular-weight organic compounds soluble starch, β-cyclodextrin, and polyethyleneglycol 6000;and by a factor of 0.2 for sodium laurate and the nonionic surfactants Triton X-100,Tween 20,Tween 60,Brij 35,and Brij 58.The results indicate that the washing-reagent-injection method contains several advantages and disadvantages. Importance of thoroughly assessment for several factors is suggested for the practical use of this technique Less

为了解氯代有机溶剂污染土壤/地下水修复新技术-冲洗剂注入法的有效性和安全性，研究表面活性剂和高分子有机物共存对三氯乙烯（TCE）水溶性的影响，TCE在玻璃珠填充柱中的重力迁移行为，研究了TCE在玻璃微珠中的溶解和迁移行为，考察了试剂种类和浓度对TCE在玻璃微珠中溶解和迁移行为的影响，填充柱彼此出现。几种表面活性剂大大增加了TCE的溶解度，但一些表面活性剂和高分子量有机化合物对TCE的溶解度没有影响。未稀释的TCE在洗涤剂饱和柱中的迁移行为对于测试的化学品有很大不同。一些表面活性剂在很宽的浓度范围内引入了快速的重力驱动迁移。 ...更多信息 在脱氯反应过程中，TCE的量减少，并且观察到顺式-1，2-二氯乙烯的形成。TCE的分解被认为是一阶相对于-TCE和零价铁浓度时，溶液中不含添加剂。TCE在添加剂存在下的分解速率低于无添加剂时的速率：阳离子表面活性剂十六烷基三甲基溴化铵使TCE的分解速率常数降低0.7倍;对于阴离子表面活性剂正十二烷基苯磺酸钠、正十二烷基硫酸钠和正十二烷磺酸钠以及对于高分子量有机化合物可溶性淀粉，β-环糊精、聚乙二醇6000、月桂酸钠和非离子表面活性剂Triton X-100、Tween 20、Tween 60、Brij 35和Brij 58的影响系数为0.2。建议对几个因素进行全面评估的重要性，以便于实际使用该技术。

项目成果

Extraction condition and efficiency of some hazardous organic chemicals from aqueous solutions using a thermoresponsive polymer system.

使用热响应聚合物系统从水溶液中提取某些危险有机化学品的条件和效率。

• 发表时间: 2004
• 期刊: Journal of Environmental Chemistry 14(3)
• 作者: K.Inaba;K.M.Koshikawa;T.Doi;T.Yamamoto
• 通讯作者: T.Yamamoto

稲葉 一穂: "「環境にやさしい」抽出系の開発"化学と教育. 51. 102-103 (2003)

Kazuho Inaba：“‘环保’萃取系统的开发”化学与教育 51. 102-103 (2003)。

Extraction condition and efficiency of some hazardous organic chemicals from aqueous solutions using a termoresponsive polymer system

使用温度响应聚合物体系从水溶液中提取某些危险有机化学品的条件和效率

• 发表时间: 2004
• 期刊: Journal of Environmental Chemistry Vol.14 No.3
• 作者: 佐々木清一;菱谷智幸;Inoue T;Yoshihisa Kato;Kazuho INABA
• 通讯作者: Kazuho INABA

「環境にやさしい」抽出系の開発

开发“环保”提取系统

• 发表时间: 2003
• 期刊: 化学と教育 51・2
• 作者: Hirabayashi Y;et al.;小原 伸哉;稲葉一穂
• 通讯作者: 稲葉一穂

Development of an environmentally-friendly extraction systems

开发环保萃取系统

• 发表时间: 2003
• 期刊: Chemistry and Education 51(2)
• 作者: H.Irie;K.Sunada;K.Hashimoto;Shin'ya OBARA;K.Inaba
• 通讯作者: K.Inaba