Utilization of Fe-Zn-based waste desulfurizer to produce Fe-C materials for removing COD from waste water

被引：0
|
作者：
Zhang X. [1 ,2 ]
Yu F. [3 ]
Huangfu L. [2 ]
Wang C. [3 ]
Li C. [2 ]
Gao S. [2 ]
Yu J. [2 ]
机构：
[1] School of Chemistry and Chemical Engineering, University of Chinese Academy of Science, Beijing
[2] State Key Laboratory of Multi-phase Complex System, Institute of Process Engineering, Chinese Academy of Sciences, Beijing
[3] School of Chemical Engineering, Xiangtan University, Xiangtan, 411105, Hunan
来源：
Huagong Xuebao/CIESC Journal | 2020年 / 71卷 / 02期
关键词：
Carbothermal reaction; COD; Fe-Zn-based waste desulfurizer; Micro-electrolysis-Fenton;
D O I：
10.11949/0438-1157.20190832
中图分类号：
学科分类号：
摘要：
The Fe-Zn-based waste desulfurizer, coal and Na2CO3 were used as raw materials to carry out high-temperature carbon thermal reduction reaction, and iron-carbon materials were prepared to realize the separation of Zn and S. It is expected to realize the comprehensive utilization of waste desulfurizer. The effect of different preparation parameters (e.g., ratios, temperature, time) were investigated to improve the removal efficiency of Zn/S and obtain high-quality Fe-C materials. The best results can be achieved with separation efficiency of Zn and S above 95% with the ratio of 1/1/1.5 for coal/waste desulfurizer/Na2CO3 at 900℃ for 2 h. Moreover, the specific surface area of the prepared Fe-C material can reach as high as 193.6 m2/g with the mesoporous volume of 0.028 cm3/g. In addition, the micro-electrolysis-Fenton test showed the removal efficiency of COD for the as-prepared Fe-C material are 41.78% and 73.56% without/with H2O2 (H2O2=COD=1500 mg/L), respectively, which is much better than commercial Fe-C material with the removal efficiency of 8.43% and 48.43% on the same condition. These results demonstrate the heat treatment process of waste desulfurizer with Buliangou-coal and Na2CO3 may be an effective way for its resource utilization to separate Zn and S as well as produce Fe-C material. © All Right Reserved.
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页码：788 / 798
页数：10
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