{"title":"二氧化硅包封法修复石油污染土壤的研究","authors":"O. Krainiukov, I. A. Kryvytska","doi":"10.26565/1992-4259-2020-23-05","DOIUrl":null,"url":null,"abstract":"Purpose. Approbation of the method of encapsulation of silicon dioxide to restore the biological value of oil-contaminated soil.\n\nMethods. The encapsulating solution was prepared using sodium silicate (7% w. / vol.) as the main component and a synthetic surfactant (sodium dodecyl sulfate). To restore the contaminated soil, a treatment solution ratio of 1:1, 1:2, 1:3 and 1:4 was used for sodium silicate and sodium dodecyl sulfate, respectively. Phytotoxicity of oil-contaminated soil was determined by biotesting aqueous extracts from the soil.\n\nResults. The most optimized for use from the studied ratios of substances is a solution consisting of 2 parts: sodium silicate and sodium dodecyl sulfate. The lowest phytotoxic effect (17%) was recorded at pH of 5 of the treated soil and the ratio of solution components 1:2 (sodium silicate / sodium dodecyl sulfate). In the experiments, 2 species of monocotyledons (oats, corn) and 2 species of dicotyledonous plants (lettuce, black radish) were used. \n\nConclusions. The technology of encapsulation of silicon dioxide in the treatment of oil-contaminated soils with a solution of sodium silicate and sodium dodecyl sulfate is quite economically attractive. The material formed as a result of the encapsulation process dries, forming an amorphous silica material, within which, in our opinion, hydrocarbons and heavy metals accumulate, but further research is needed for such a statement.","PeriodicalId":40624,"journal":{"name":"Visnyk of V N Karazin Kharkiv National University-Series Geology Geography Ecology","volume":"12 1","pages":""},"PeriodicalIF":0.3000,"publicationDate":"2020-11-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Use of Silicon Dioxide Encapsulation Method for Restoration of Oil-Polluted Soils\",\"authors\":\"O. Krainiukov, I. A. Kryvytska\",\"doi\":\"10.26565/1992-4259-2020-23-05\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Purpose. Approbation of the method of encapsulation of silicon dioxide to restore the biological value of oil-contaminated soil.\\n\\nMethods. The encapsulating solution was prepared using sodium silicate (7% w. / vol.) as the main component and a synthetic surfactant (sodium dodecyl sulfate). To restore the contaminated soil, a treatment solution ratio of 1:1, 1:2, 1:3 and 1:4 was used for sodium silicate and sodium dodecyl sulfate, respectively. Phytotoxicity of oil-contaminated soil was determined by biotesting aqueous extracts from the soil.\\n\\nResults. The most optimized for use from the studied ratios of substances is a solution consisting of 2 parts: sodium silicate and sodium dodecyl sulfate. The lowest phytotoxic effect (17%) was recorded at pH of 5 of the treated soil and the ratio of solution components 1:2 (sodium silicate / sodium dodecyl sulfate). In the experiments, 2 species of monocotyledons (oats, corn) and 2 species of dicotyledonous plants (lettuce, black radish) were used. \\n\\nConclusions. The technology of encapsulation of silicon dioxide in the treatment of oil-contaminated soils with a solution of sodium silicate and sodium dodecyl sulfate is quite economically attractive. The material formed as a result of the encapsulation process dries, forming an amorphous silica material, within which, in our opinion, hydrocarbons and heavy metals accumulate, but further research is needed for such a statement.\",\"PeriodicalId\":40624,\"journal\":{\"name\":\"Visnyk of V N Karazin Kharkiv National University-Series Geology Geography Ecology\",\"volume\":\"12 1\",\"pages\":\"\"},\"PeriodicalIF\":0.3000,\"publicationDate\":\"2020-11-23\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Visnyk of V N Karazin Kharkiv National University-Series Geology Geography Ecology\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.26565/1992-4259-2020-23-05\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q4\",\"JCRName\":\"GEOLOGY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Visnyk of V N Karazin Kharkiv National University-Series Geology Geography Ecology","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.26565/1992-4259-2020-23-05","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"GEOLOGY","Score":null,"Total":0}
引用次数: 0
摘要
目的。二氧化硅包封法恢复石油污染土壤生物价值的初步研究。包封液以水玻璃(7% w. / vol)为主要成分,合成表面活性剂十二烷基硫酸钠为包封液。为了修复污染土壤,水玻璃和十二烷基硫酸钠的处理溶液比例分别为1:1、1:2、1:3和1:4。采用生物试验法测定了石油污染土壤的植物毒性。从所研究的物质比例来看,最适合使用的是由水玻璃钠和十二烷基硫酸钠两部分组成的溶液。在pH = 5、水玻璃/十二烷基硫酸钠溶液配比为1:2时,植物毒性作用最低(17%)。试验选用2种单子叶植物(燕麦、玉米)和2种双子叶植物(生菜、黑萝卜)。结论。硅酸钠-十二烷基硫酸钠溶液对含油土壤进行二氧化硅包封处理具有经济效益。由于封装过程形成的材料干燥,形成一种无定形的二氧化硅材料,在我们看来,其中积累了碳氢化合物和重金属,但这种说法需要进一步的研究。
Use of Silicon Dioxide Encapsulation Method for Restoration of Oil-Polluted Soils
Purpose. Approbation of the method of encapsulation of silicon dioxide to restore the biological value of oil-contaminated soil.
Methods. The encapsulating solution was prepared using sodium silicate (7% w. / vol.) as the main component and a synthetic surfactant (sodium dodecyl sulfate). To restore the contaminated soil, a treatment solution ratio of 1:1, 1:2, 1:3 and 1:4 was used for sodium silicate and sodium dodecyl sulfate, respectively. Phytotoxicity of oil-contaminated soil was determined by biotesting aqueous extracts from the soil.
Results. The most optimized for use from the studied ratios of substances is a solution consisting of 2 parts: sodium silicate and sodium dodecyl sulfate. The lowest phytotoxic effect (17%) was recorded at pH of 5 of the treated soil and the ratio of solution components 1:2 (sodium silicate / sodium dodecyl sulfate). In the experiments, 2 species of monocotyledons (oats, corn) and 2 species of dicotyledonous plants (lettuce, black radish) were used.
Conclusions. The technology of encapsulation of silicon dioxide in the treatment of oil-contaminated soils with a solution of sodium silicate and sodium dodecyl sulfate is quite economically attractive. The material formed as a result of the encapsulation process dries, forming an amorphous silica material, within which, in our opinion, hydrocarbons and heavy metals accumulate, but further research is needed for such a statement.