Ultrasound regeneration of multi wall carbon nanotubes saturated by humic acid

被引：32

作者：

Derakhshani, Elham ^{[1
]}

Naghizadeh, Ali ^{[1
]}

机构：

[1] Birjand Univ Med Sci, Dept Environm Hlth Engn, Sch Publ Hlth, Birjand, Iran

来源：

DESALINATION AND WATER TREATMENT | 2014年 / 52卷 / 40-42期

关键词：

Regeneration; Ultrasound; Humic acid; Multi wall carbon nanotubes; GRANULAR ACTIVATED CARBON; ADSORPTION-DESORPTION; PHENOL; WATER;

D O I：

10.1080/19443994.2013.830701

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

The main purpose of this study was to evaluate the efficiency of ultrasound technique for regeneration of multi wall carbon nanotubes exhausted by humic acid. Carbon nanotubes (CNTs) were prepared by chemical vapor deposition method in the presence of Co-Mg/MgO as the catalyst. Results of ultrasound regeneration (in frequencies of 130 and 35 kHz) showed higher regeneration efficiency at 130 kHz after five cycles of regeneration. The slight decrease in adsorption capacity after each regeneration cycle may be due to the deposition of decomposed residues in CNT pores, which blocked carbon porosity and decreased specific surface area. In conclusion, ultrasonic regeneration showed the possibility as an alternative to chemical and thermal regeneration of CNTs.

引用

页码：7468 / 7472

页数：5

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