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首页> 外文会议>Sustainability through Resource Conservation and Recycling (Conference) >The Effect of Hydrogen Peroxide Addition on the Citric Acid Leaching of Pb from Contaminated Soil
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The Effect of Hydrogen Peroxide Addition on the Citric Acid Leaching of Pb from Contaminated Soil

机译：过氧化氢对污染土壤柠檬酸浸出的影响

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Soil contaminated with heavy metals is a serious environmental problem. Generally, organic contaminants in soil are biodegradable, whereas heavy metals could not be decomposed by biogeochemical processes. There are many military bases in Korea due to historical and political-geographical reasons. Some military operations of these bases, such as arm training activities, have significantly contributed in heavy metal contaminated soil problems. Therefore, there is an increasing demand for the remediation of soil contaminated with heavy metals. Citric acid has been investigated, as a leach reagent, to dissolve heavy metals from contaminated soil, and the leaching efficiency using citric acid depends on the chemical and mineralogical forms. Weathered form such as carbonate and oxide was leached with citric acid whereas metal form was not dissolved. The leaching efficiency of Pb with citric acid was improved by adding hydrogen peroxide because the metal form of Pb could be oxidized with hydrogen peroxide.
机译：污染重金属的土壤是一个严重的环境问题。通常，土壤中的有机污染物是可生物降解的，而重金属不能通过生物地球化学过程分解。由于历史和政治地理原因，韩国有许多军事基地。这些基地的一些军事行动，如手臂训练活动，在重金属污染的土壤问题中显着贡献。因此，对污染重金属的土壤的修复日益增加的需求。已经研究了柠檬酸作为浸出试剂，以溶解来自污染的土壤的重金属，使用柠檬酸的浸出效率取决于化学和矿物学形式。用柠檬酸浸出诸如碳酸盐和氧化物等风化形式，而金属形式未溶解。通过加入过氧化氢，提高了PB与柠檬酸的浸出效率，因为可以用过氧化氢氧化金属形式。

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