Study on regeneration of spent activated carbon by using a clean technology

被引:18
|
作者
Ma, Aiyuan [1 ,2 ,3 ]
Zheng, Xuemei [1 ,2 ,3 ]
Liu, Chenhui [1 ,4 ]
Peng, Jinhui [1 ,2 ,3 ]
Li, Shiwei [1 ,2 ,3 ]
Zhang, Libo [1 ,2 ,3 ]
Liu, Chao [1 ,2 ,3 ]
机构
[1] Yunnan Prov Key Lab Intensificat Met, Kunming 650093, Yunnan, Peoples R China
[2] Kunming Univ Sci & Technol, Key Lab Unconvent Met, Minist Educ, Kunming 650093, Yunnan, Peoples R China
[3] Kunming Univ Sci & Technol, Fac Met & Energy Engn, Kunming 650093, Yunnan, Peoples R China
[4] Yunnan Minzu Univ, Key Lab Resource Clean Convers Ethn Reg, Educ Dept Yunnan Prov, Kunming 650500, Yunnan, Peoples R China
基金
中国国家自然科学基金;
关键词
microwave regeneration; regenerated activated carbon; spent catalyst; ZINC-OXIDE DUST; MICROWAVE-ASSISTED REGENERATION; DIELECTRIC-PROPERTIES; CHEMICAL REGENERATION; TEMPERATURE INCREASE; PILOT-SCALE; METHODOLOGY; KINETICS; REMOVAL;
D O I
10.1515/gps-2016-0110
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
In this paper, microwave regeneration of spent activated carbon saturated with organic compounds was investigated. It has been observed from the present experiments that the microwave regeneration temperature and time have significant influences on iodine adsorption value and yield of the regenerated activated carbon (RAC). The characteristics of the RAC were examined by Brunauer-Emmett-Teller (BET). The RAC has a greatly higher surface area (743.6 similar to 264.1 m(2)/g), total pore volume (0.54 similar to 0.22 cm(3)/g), and a relatively smaller average pore width (28.83 similar to 33.58 nm) compared to the spent catalyst. The separation mechanism for activated carbon and organic impurities was determined by X-ray photoelectron spectroscopy (XPS) and scanning electron microscopy (SEM) equipped with an energy-dispersive spectrometer (EDS). It was a process in which the organic impurities were aggregated from the pore internal migration to the surface at low temperatures, and the organic impurities were completely decomposed as the temperature increased to 900 degrees C for 40 min. Simultaneously, a hexagonal crystal structure material of ZnO was obtained.
引用
收藏
页码:499 / 510
页数:12
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