Enhanced Soil Remediation via Plant-Based Surfactant Compounds from Acanthophyllum Laxiusculum

被引：1
作者：
Soltaninejad, Hajar [1 ]
Lotfabad, Tayebe Bagheri [2 ]
Yaghmaei, Soheila [1 ]
机构：
[1] Sharif Univ Technol, Sch Chem & Petr Engn, Tehran, Iran
[2] Natl Inst Genet Engn & Biotechnol, Dept Energy & Environm Biotechnol, Tehran, Iran
来源：
TENSIDE SURFACTANTS DETERGENTS | 2016年 / 53卷 / 04期
关键词：
Remediation; soil washing; phenanthrene; natural surfactant; two-compartment model; POLYCYCLIC AROMATIC-HYDROCARBONS; CONTAMINATED SOIL; SYNTHETIC SURFACTANTS; BIOSURFACTANT; SOLUBILIZATION; BIODEGRADATION; PHENANTHRENE; SAPONINS; CARYOPHYLLACEAE; DESORPTION;
D O I：
10.3139/113.110453
中图分类号：
O69 [应用化学];
学科分类号：
081704 ;
摘要：
In the present study, an aqueous root-extract of Acanthophyllum taxiusculum (AREAL) was evaluated for phenanthrene removal from two samples of contaminated soil. AREAL showed a linear solubilization enhancement for phenanthrene with a weight solubilization ratio of 0.05. Batch soil washing experiments caused the removal of phenanthrene with efficiencies of 96.70/0 and 78% from soils with 0.78% and 2.73% organic carbon, respectively. Desorption kinetics of phenanthrene exhibited a twophase pattern, namely, a rapid release as the initial phase and a slower removal as a subsequent phase. A two-compartment exponential model could adequately represent the two phases of the kinetic pattern of phenanthrene desorption. The rise of pH from acidic to basic levels, decreased phenanthrene removal due to changes in the micelle number of the surfactant phase. Maximum achievable yield of removal was 82% phenanthrene in a column experiment at defined operational conditions. High removal efficiencies show the potential application of AREAL for improving the bioremediation of polycyclic aromatic hydrocarbons (PAHs) from contaminated soils.
引用
收藏
页码：324 / 331
页数：8
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