Adsorption of phenol and 1-naphthol onto XC-72 carbon

被引：4
作者：
Zuo, Liming
Yu, Shaoming [1 ]
Cheng, Leilei
Du, Erling
机构：
[1] Hefei Univ Technol, Sch Chem Engn, Hefei 230009, Anhui, Peoples R China
来源：
KOREAN JOURNAL OF CHEMICAL ENGINEERING | 2013年 / 30卷 / 03期
基金：
中国国家自然科学基金;
关键词：
XC-72; Carbon; Adsorption; Phenol; 1-Naphthol; Kinetics; AQUEOUS-SOLUTIONS; ORGANIC-CHEMICALS; ACTIVATED CARBON; IONIC-STRENGTH; BLACK CARBON; HUMIC-ACID; METAL-IONS; NANOTUBES; REMOVAL; SORPTION;
D O I：
10.1007/s11814-012-0194-x
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
XC-72 carbon (XC-72) was characterized by SEM, XPS, N-2 adsorption-desorption, particle size distribution analysis and potentiometric acid-base titration. The adsorption of phenol and 1-naphthol on XC-72 was studied as a function of contact time, pH, adsorbent content and temperature. The kinetic adsorption data were described well by the pseudo-second-order model. The adsorption isotherms of phenol were described well by Freundlich model, while the adsorption isotherms of 1-naphthol were fitted well by Langmuir model. The results demonstrated that XC-72 had much higher adsorption capacity for 1-naphthol than for phenol. The adsorption thermodynamic data were calculated from the temperature-dependent adsorption isotherms at T=293, 313 and 333 K, and the results indicated that the adsorption of phenol was an exothermic process, whereas the adsorption of 1-naphthol was an endothermic process. XC-72 is a suitable material for the preconcentration of phenol and 1-naphthol from large volumes of aqueous solutions.
引用
收藏
页码：714 / 723
页数：10
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