Preparation of sludge derived magnetic porous carbon and their application in Fenton-like degradation of 1-diazo-2-naphthol-4-sulfonic acid

被引：58
作者：
Gu, Lin [1 ]
Zhu, Nanwen [1 ]
Zhou, Pin [1 ]
机构：
[1] Shanghai Jiao Tong Univ, Coll Environm Sci & Technol, Shanghai 200240, Peoples R China
来源：
BIORESOURCE TECHNOLOGY | 2012年 / 118卷
关键词：
Sewage sludge; 1.2.4-Acid; Porous carbon; SEWAGE-SLUDGE; ACTIVATED CARBON; ADSORPTION;
D O I：
10.1016/j.biortech.2012.05.102
中图分类号：
S2 [农业工程];
学科分类号：
0828 ;
摘要：
A magnetic porous carbon containing Fe3O4 (FPC) has been synthesized by a novel activation and carbonization process of sewage sludge without extra addition of ferric ions. Properties of FPC carbonized at 600, 800 and 1000 degrees C were studied using N-2 adsorption and desorption isotherms, X-ray diffraction (XRD), scanning electron microscopy (SEM) and vibrating sample magnetometer. The results indicate that FPC carbonized at 600 degrees C has a superior porous structure and high pore volume (0.504 mL/g). Further study found that Fe3O4 is dominating in the presence of iron in FPC carbonized at 600 degrees C. The resulting chars shows higher catalytic activity in 1-diazo-2-naphthol-4-sulfonic acid (1,2,4-Acid) oxidation than commercial Fe3O4 MNPs. The 1,2,4-Acid and TOC removal efficiency can reach 96.6% and 87.2% after 260 min Fenton-like treatment. The mechanism in FPC-H2O2 system may include a Haber-Weiss type reaction between the active sites (e.g. Fe3O4) in FPC and hydrogen peroxide. (C) 2012 Elsevier Ltd. All rights reserved.
引用
收藏
页码：638 / 642
页数：5
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