摘要(英) |
Surfactants have a characteristic molecular structure consisting of a hydrophilic and hydrophobic groups which can enhanced nonionic organic compounds (NOCs) dissolved in aqueous solution. The chemical structures of surfactants are expected to influence the NOCs behaviors in soils such as degradation and migration, as well as the distribution of NOCs in soil/aqueous system. In this study, we selected anionic and cationic surfactants (DBS and DB), two soils with high and low organic matter content (fOC=11.6 % and 1.88 %) and four NOCs (BTEX) to investigate the fates of NOCs in the soil/aqueous system.
The data presented in this research indicated that initials NOC Kd* values (partition coefficients in surfactant solutions and soil) increased with increasing surfactant concentrations. For anionic surfactants system, the Kd* value reaches a plateau at the concentration of Ce = X, and then began to decline. The changes of Kd* values would slow down while NOCs solubility increasing. Surfactants adsorbed by soil may produce partition medium for NOCs. However, as the adsorbed surfactants increase, the amount of form micelles in solution may increase, which could then reduce the impact of the surfactant on NOCs uptake. For low water solubility NOCs, the impacts of hydrophobic medium formed on soils were significant resulting in the changes in Kd* values.
BTEX adsorbed on two soils in surfactant solutions showed the different Kd* resulting from the difference mechanism of soils in adsorbing the anionic and cationic surfactants. Soils with high organic matter could enhance the uptake of anionic surfactant and reduce the amounts of the adsorptive cationic surfactant to show above phenomena. |
參考文獻 |
1. 王一雄、陳尊賢、李達源,“土壤污染學”,國立空中大學,初版,(1995)
2. H. Zhou, H. Li, and O. Xu, “Partition of Nonpolar Organic Pollutants from Water to Soil and Sediment Organic Matters”, Environ. Sci. & Technol., Vol. 29, No. 5, p.1401-1406, (1995)
3. 刈米孝夫原著,王鳳英編譯,“界面活性劑的原理與應用”,高立圖書有限公司,五版,(1998)
4. 趙承琛,“工業升級之特用化學品-界面活性劑”,復文書局,初版,(1993)
5. 趙承琛,“界面科學基礎”,復文書局,十五版,(1995)
5. 趙承琛,“界面科學基礎”,復文書局,十五版,(1995)
5. 趙承琛,“界面科學基礎”,復文書局,十五版,(1995)
5. 趙承琛,“界面科學基礎”,復文書局,十五版,(1995)
9. 謝文正,“界面活性劑臨界膠束濃度與增溶作用影響機制之研究”,碩士論文,中央大學環境工程研究所,(1993)
10. 陳瑞玲,“不同界面活性劑對土壤及底泥吸附非離子性有機化合物之影響”,碩士論文,中央大學環境工程研究所,(1996)
11. 陳百合,“不同土壤組成對界面活性劑吸附機制之研究”,碩士論文,中央大學環境工程研究所,(1997)
12. 閻誠麟,“不同類型界面活性劑對黏土礦物吸附非離子有機污染物之影響”,碩士論文,中央大學環境工程研究所,(1997)
13. 楊琇婷,“土壤吸附界面活性劑對土壤卅水系統中有機污染物傳輸行為之影響”,碩士論文,中央大學環境工程研究所,(1997)
13. 楊琇婷,“土壤吸附界面活性劑對土壤卅水系統中有機污染物傳輸行為之影響”,碩士論文,中央大學環境工程研究所,(1997)
15. 李育輯,“土壤吸附非離子性界面活性劑對土壤卅水系統中有機污染物分佈行為之影響”,碩士論文,中央大學環境工程研究所,(1999)
16. 張仁福,“土壤污染防治學”,高雄復文,初版,(1998)
17. B. M. Braja原著,胡德欽譯,“土壤力學”,高立,初版,(1997)
18. 洪崑煌譯,“土壤化學”,國立編譯館,初版,(1996)
19. 王一雄,“土壤環境污染與農藥”,文海環境科學叢書,初版,(1999)
20. M. B. McBride, “Environmental Chemistry of Soils”, Oxford University Press, Inc. 1994
20. M. B. McBride, “Environmental Chemistry of Soils”, Oxford University Press, Inc. 1994
22. L. I. Osipow原著,高文弘,周賢孟譯著“界面化學”,黎明,四版,(1988)
23. 廖明隆編譯“界面化學與界面活性劑”,文源,再版,(1994)
23. 廖明隆編譯“界面化學與界面活性劑”,文源,再版,(1994)
23. 廖明隆編譯“界面化學與界面活性劑”,文源,再版,(1994)
23. 廖明隆編譯“界面化學與界面活性劑”,文源,再版,(1994)
23. 廖明隆編譯“界面化學與界面活性劑”,文源,再版,(1994)
28. S. M. Lambert, “Functional Relationship Between Sorption in Soil and Chemical Structure”, Journal of Agric. Food Chem., Vol. 15, p.572-576, (1989)
29. C. T. Chiou, L. J. Peter, and V. H. Freed, “A Physical Concept of Soil-Water Equilibrium for Nonionic Organic Compounds”, Science, Vol. 206, p.831-832, (1979)
29. C. T. Chiou, L. J. Peter, and V. H. Freed, “A Physical Concept of Soil-Water Equilibrium for Nonionic Organic Compounds”, Science, Vol. 206, p.831-832, (1979)
31. Q. Xu, E. D. Snell, “Adsorption Behavior of Alkylarylethoxylated Alcohols on Silica”, Journal of Colloid and Interface Science, Vol. 144, No. 1, p.165-173, (1991)
31. Q. Xu, E. D. Snell, “Adsorption Behavior of Alkylarylethoxylated Alcohols on Silica”, Journal of Colloid and Interface Science, Vol. 144, No. 1, p.165-173, (1991) |