利用反應曲面法評估乙二醇丁醚受污染土壤之最佳化條件研究淋洗

CNU IR > College of Sustainable Environment and Recreation > Dept. of Environmental Engineering and Science (including master's program) > Dissertations and Theses > Item 310902800/30028

Please use this identifier to cite or link to this item: https://ir.cnu.edu.tw/handle/310902800/30028

Title:	利用反應曲面法評估乙二醇丁醚受污染土壤之最佳化條件研究淋洗 Contaminated Soil Washing by Ethylene Glycol Monobutyl Ether: Optimization with Response Surface Methodology
Authors:	Yotto, Aekapope
Contributors:	環境工程與科學系張家源
Keywords:	Central composite design Diesel Ethylene glycol monobutyl ether (EGBE) Soil washin Response surface methodology
Date:	2016
Issue Date:	2016-12-21 15:31:49 (UTC+8)
Abstract:	Soil washing has been increasingly viewed as an appropriate remediation technology for diesel and heavy metal contaminated soils. A 2k-1 fractional factorial design was successfully applied for factor screening analysis of temperature, washing time, pH, flow rate and concentration of surfactants on the response of diesel and heavy metal removal efficiency. Results indicated concentration of surfactant, pH and flow rate as significant factors. This was then subjected for response surface methodology (RSM) based on a central composite design for further analysis on its effects and optimum conditions. Both 2k-1 fractional factorial design and central composite design showed a good fit of data which validates the appropriateness of the experimental design. Optimum conditions based on the statistic function showed 5.02 %v/v surfactant, pH 12.04 and 4.64 mL/min flow rate resulted to diesel removal efficiency of 61.42%. The interaction between the concentration of surfactants and pH or flow rate were significant while the interaction of pH and flow rate were not significant. For heavy metals removal efficiency, the effects of concentration of surfactant are positive and flow rate is negative. As the concentration of surfactants was increased from 0 to 4%v/v, zinc removal efficiency increased from 3% to 10.5% while copper removal efficiency slightly increased. The effecting of pH on the removal of copper is very high at pH 3 while removal of zinc is very high at pH 6. The results obtained from this study can be applied for the field work in the future.Keyword: Soil washing, Ethylene glycol monobutyl ether (EGBE), Diesel, Central composite design, Response surface methodology
Relation:	校外公開：2019-02-17,校內公開：2016-02-18，學年度：104，141頁
Appears in Collections:	[Dept. of Environmental Engineering and Science (including master's program)] Dissertations and Theses

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