Enhanced soil washing of phenanthrene by a plant-derived natural biosurfactant, Sapindus saponin
Enhanced soil washing of phenanthrene by a plant-derived natural biosurfactant, Sapindus saponin
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通过植物源性天然生物表面活性剂无患子皂苷增强菲的土壤冲洗
DOI：
10.1016/j.colsurfa.2013.02.055
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发表时间：
2013-05
影响因子：
5.2
通讯作者：
Zhu, Lizhong
中科院分区：
文献类型：
--
作者：
Zhou, Wenjun;Wang, Xuehao;Chen, Cuiping;Zhu, Lizhong
生物表面活性剂具有环境友好性，在环境修复中具有很大的优势。从无患子果皮中提取无患子皂苷，研究其对菲污染土壤的强化洗涤性能，并与典型的人工合成非离子表面活性剂吐温80进行比较。无患子皂苷对菲的增溶呈线性关系，增溶比为0.0312，约为吐温80的1/3。无患子皂苷对污染土壤中菲的去除效果最好，最大去除率约为87.4%，仅略低于吐温80的去除率（约91.5%），这是因为无患子皂苷在土壤中的吸附量远小于吐温80。无患子皂苷对菲的增溶作用和土壤对无患子皂苷的吸附作用均随溶液pH的升高而降低，结果表明无患子皂苷对菲污染土壤的淋洗效率在pH为6.0左右时达到最大。用有机膨润土去除一定量的表面活性剂溶液中的菲，可使无患子皂苷溶液在土壤洗涤后得到回收再利用。无患子皂苷具有较好的土壤淋洗能力，在有机污染土壤和地下水的淋洗修复技术中具有潜在的应用价值。
Biosurfactants have great advantages for using in environmental remediation as their environmental friendly nature. In this study, a plant-derived natural biosurfactant of Sapindus saponin was extracted from the fruit pericarps of Sapindus mukorossi (Chinese soapberry), and the properties of this biosurfactant in enhancing washing for phenanthrene contaminated soil were investigated and compared with those of Tween 80, a representative synthetic nonionic surfactant. Sapindus saponin showed a linear solubilization enhancement for phenanthrene and the weight solubilization ratio was 0.0312 and about one third of that of Tween 80. However, Sapindus saponin can effectively remove phenanthrene from contaminated soil with a maximum removal percentage of about 87.4%, which was only slightly less than that of Tween 80 (about 91.5%) because the sorption of Sapindus saponin onto soil was much less than that of Tween 80. The solubilization enhancement of Sapindus saponin for phenanthrne and the sorption of Sapindus saponin onto soil both decreased with increasing solution pH, the net results of which resulted in that the maximum washing efficiency of Sapindus saponin for phenanthrene contaminated soil was obtained at pH around 6.0. Sapindus saponin solutions can be recovered for their reusage after soil washing by using organo-bentonite to remove phenanthrene from the washed surfactant solutions with an appropriate dosage. Sapindus saponin showed a favorable performance in enhancing soil washing and should have the potential application in soil washing technology for the remediation of organic contaminated soils and groundwater.
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影响因子：
1.7
作者：
Keiso Nakayama;H. Fujino;R. Kasai;Yohko Mitoma;Noboru Yata;Osamu Tanaka
通讯作者：
Keiso Nakayama;H. Fujino;R. Kasai;Yohko Mitoma;Noboru Yata;Osamu Tanaka
影响因子：
8.9
作者：
Zhu, Lizhong;Zhou, Wenjun
通讯作者：
Zhou, Wenjun
影响因子：
4.7
作者：
Jing-liang Li;Bing‐Hung Chen
通讯作者：
Jing-liang Li;Bing‐Hung Chen
DOI：
10.1016/s0927-7757(98)00785-7
发表时间：
1999-06-15
影响因子：
5.2
作者：
Harwell, JH;Sabatini, DA;Knox, RC
通讯作者：
Knox, RC
影响因子：
12.8
作者：
Prak, DJL;Pritchard, PH
通讯作者：
Pritchard, PH