Reactivation and recycling of spent carbon using solvent desorption followed by thermal treatment (TR)

被引：14

作者：

Bhagawan, D. ^{[1
]}

Poodari, Saritha ^{[1
]}

Kumar, Gujarathi Ravi ^{[1
]}

Golla, Shankaraiah ^{[1
]}

Anand, Ch ^{[1
]}

Banda, Kumara Swamy ^{[1
]}

Himabindu, Vurimindi ^{[1
]}

Vidyavathi, S. ^{[2
]}

机构：

[1] Jawaharlal Nehru Technol Univ, Inst Sci & Technol, Ctr Environm, Hyderabad 500085, Andhra Pradesh, India

[2] Jawaharlal Nehru Technol Univ, Dept Civil Engn, Coll Engn, Hyderabad 500085, Andhra Pradesh, India

来源：

JOURNAL OF MATERIAL CYCLES AND WASTE MANAGEMENT | 2015年 / 17卷 / 01期

关键词：

Spent carbon; Solvent; Desorption; Thermal reactor; Reactivation; ACTIVATED CARBON; METHYLENE-BLUE; REGENERATION; REMOVAL; OPTIMIZATION; EQUILIBRIUM; MICROWAVE; KINETICS;

D O I：

10.1007/s10163-014-0237-y

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

This study demonstrated a technique to regenerate spent activated carbon using solvent desorption followed by thermal decomposition of pollutants. Dichloromethane is used as solvent for desorption and thermal reactor under inert (N-2, CO2) atmosphere used for thermal reactivation of the spent carbon. Physical, chemical, functional chemistry and thermal behavior of the samples before and after treatment are featured by means of pH, bulk density, moisture content, ash content, Fourier transform infrared spectroscopy, thermo-gravimetric differential thermal analysis. The adsorptive property of the activated spent carbon is quantified using methylene blue and iodine as model compounds. After reactivation, methylene blue and iodine number adsorption is improved from 5 to 96 % and from 10 to 99 %, respectively. This regenerated carbon applied for paper mill and pharmaceutical effluents. 95 and 94 % of the COD reduction and color removal are observed by spent reactivated carbon.

引用

页码：185 / 193

页数：9

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