标题：Selective adsorption of phenanthrene dissolved in Tween 80 solution using activated carbon derived from walnut shells
作者： Zheng, X (Zheng, Xin); Lin, H (Lin, Heng); Tao, YF (Tao, Yufang); Zhang, H (Zhang, Hui)
来源出版物：CHEMOSPHERE 卷：208 页码: 951-959 DOI：10.1016/j.chemosphere.2018.06.025 出版年： OCT 2018
摘要： In order to remove phenanthrene (PHE) from surfactant solution, activated carbon (AC) was prepared from waste walnut shells and characterized by Brunauer-Emmett-Teller (BET), field-emission scanning electron microscopy (FESEM), Fourier transform infrared (FTIR) spectroscopy and X-ray photoelectron spectroscopy (XPS). For solutions containing PHE and Tween 80, the former was effectively removed and the latter could be economically recovered after adsorption by the prepared AC. The it pi-pi interactions and oxygen containing functional groups of AC play important roles in the PHE adsorption process. The adsorption kinetics process could best be described using the pseudo-second-order model and adsorption isotherm results indicated that the Langmuir model best fitted the data. Adsorption thermodynamic parameters, including enthalpy change, Gibbs free energy change and entropy change were calculated. Under optimal conditions, PHE removal and Tween 80 recovery reached 95% and 90%, respectively. The results suggest that AC provided an efficient alternative for selective adsorption of PHE and recovery of Tween 80 after the soil washing processes. After adsorption AC could be regenerated with ethanol and even if AC were regenerated twice PHE removal reached 80%.
作者关键词：Activated carbon; Selective adsorption; Polycyclic aromatic hydrocarbons; Tween 80; Recovery
扩展关键词： POLYCYCLIC AROMATIC-HYDROCARBONS; AQUEOUS-SOLUTION; SURFACTANT SOLUTIONS; CONTAMINATED SOIL; ENHANCED BIODEGRADATION; NONIONIC SURFACTANTS; GRAPHENE OXIDE; REMOVAL; PAHS; NAPHTHALENE
通讯作者地址：Zhang, H (reprint author), Wuhan Univ, Hubei Environm Remediat Mat Engn Technol Res Ctr, Dept Environm Sci & Engn, Wuhan 430079, Hubei, Peoples R China.
[Zheng, Xin; Lin, Heng; Tao, Yufang; Zhang, Hui] Wuhan Univ, Hubei Environm Remediat Mat Engn Technol Res Ctr, Dept Environm Sci & Engn, Wuhan 430079, Hubei, Peoples R China.
[Zheng, Xin; Lin, Heng; Tao, Yufang; Zhang, Hui] Wuhan Univ, Shenzhen Res Inst, Shenzhen 518057, Peoples R China.
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