M, a particular industrial waste, was selected to detoxify chromium slag at a high temperature. The carbon remaining in M reduced Cr (Ⅵ) of Na2CrO4 borne in the chromium slag to Cr (Ⅲ) in the solid phase reaction, and its thermodynamics and kinetics were studied. The reduction process of Na2CrO4 by carbon produced CO, which was endothermic. Under the experimental condition, the apparent activation energy was 4.41 kJ·mol-1, the apparent order of reaction for Na2CrO4 was equal to one, and the partial pressure of CO was only 0.22 Pa at 1 330 ℃.
参考文献
| [1] | LAN Si-guo;YIN Hui-min;DI Yi-an et al.Detoxification Techniques for Chromium Slag[J].Research on Environmental Sciences,1998,11(03):53-56. |
| [2] | DING Yi .Views on Treatment to Chromium Slag[J].Chemicals Industry and Environmental Protection,1994,14(04):210-215. |
| [3] | REN Qing-yu .Comprehensive Utilization and Treatment for Chromium Slag[J].Environment Engineering,1989,7(03):50-55. |
| [4] | Mollah M Y A;Tsai Y N;Hess T R et al.An FTIR,SEM and EDS Investigation of Solidification/Stabilization of Chromium Using Portland Cement Type V and Type IP[J].Journal of Hazardous Materials,1992,30(03):273-283. |
| [5] | Kindness A;Macias A;Glasser F P .Immobilization of Chromium in Cement Matrices[J].Waste Management,1994,14(01):3-11. |
| [6] | Allan M L;Kukacka L E .Blast Furnace Slag-Modified Grouts for in Situ Stabilization of Chromium-Contaminated Soil[J].WASTE MANAGEMENT,1995,15(03):193-202. |
| [7] | MA Shu-wen .Review of Chromium Slag Treatment and Its Resource Utility[J].Inorganic Salt Industry,1997,29(02):19-22. |
| [8] | 兰嗣国,张剑霞,还博文.熔融还原解毒后铬渣的稳定性研究[J].环境工程,1997(01):44-51. |
| [9] | 方荣利,金成昌.去除铬渣毒性的研究[J].重庆环境科学,1998(01):45-48,52. |
| [10] | KUANG Shao-ping;XU Qian .Study on Treating Chromium Slag Using Gangue Autotrophic Technology[J].Environmental Engineering,2003,21(05):43-45. |
| [11] | JI Zhu;WANG Cheng-wu;ZHAO Qiao-zhen .Cr6+ Structure in Chromium Slag[J].Inorganic Salt Industry,1981,13(06):51-56. |
| [12] | PAN Jin-fang;FENG Xiao-xi;ZHANG Da-nian .Study on Forms of Chromium in Chromic Slag[J].Shanghai Environmental Sciences,1996,15(03):15-17. |
| [13] | LIANG Ying-jiao;CHE Yin-chang.Handbook of Inorganic Substance Thermodynamics Parameter[M].沈阳:东北大学出版社,1993 |
| [14] | Chase Malcolm W.NIST-JANAF Thermochemical Tables[M].Maryland:American Chemical Society and American Institute of Physics for National Institute of Standards and Technology,1998 |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%