Influence of pore size distribution on the adsorption of phenol on PET-based activated carbons

被引：92
作者：
Lorenc-Grabowska, Ewa [1 ]
Diez, Maria A. [2 ]
Gryglewicz, Grazyna [1 ]
机构：
[1] Wroclaw Univ Technol, Dept Polymer & Carbonaceous Mat, Fac Chem, Gdanska 7-9, PL-50344 Wroclaw, Poland
[2] CSIC, INCAR, Inst Nacl Carbon, C Francisco Pintado Fe 26, Oviedo 33011, Spain
来源：
JOURNAL OF COLLOID AND INTERFACE SCIENCE | 2016年 / 469卷
关键词：
PET; Coal-tar pitch; Activated carbons; Surface properties; Kinetics; Phenol adsorption; SURFACE-CHEMISTRY; COMPETITIVE ADSORPTION; TEXTURAL DEVELOPMENT; SUBSTITUTED PHENOLS; AQUEOUS-SOLUTIONS; PLASTIC WASTES; REMOVAL; MECHANISM; COAL; EQUILIBRIUM;
D O I：
10.1016/j.jcis.2016.02.007
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The role of pore size distribution in the adsorption of phenol in aqueous solutions on polyethylene terephthalate (PET)-based activated carbons (ACs) has been analyzed. The ACs were prepared from PET and mixtures of PET with coal-tar pitch (CTP) by means of carbonization and subsequent steam and carbon dioxide activation at 850 and 950 degrees C, respectively. The resultant ACs were characterized on the basis of similarities in their surface chemical features and differences in their micropore size distributions. The adsorption of phenol was carried out in static conditions at ambient temperature. The pseudo-second order kinetic model and Langmuir model were found to fit the experimental data very well. The different adsorption capacities of the ACs towards phenol were attributed to differences in their micropore size distributions. Adsorption capacity was favoured by the volume of pores with a size smaller than 1.4 nm; but restricted by pores smaller than 0.8 nm. (C) 2016 Elsevier Inc. All rights reserved.
引用
收藏
页码：205 / 212
页数：8
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