Shao Luhua, Wei Guangtao, Wang Yizhi, Li Zhongmin, Zhang Linye, Zhao Shukai, Zhou Ming
School of Chemistry and Chemical Engineering, Guangxi University, Nanning, 530004, China.
Department of Chemical Engineering, University of Waterloo, Waterloo, Canada.
Environ Sci Pollut Res Int. 2016 Aug;23(15):15202-7. doi: 10.1007/s11356-016-6691-4. Epub 2016 Apr 20.
Acidified/calcined red mud (ACRM), a novel catalyst used in Fenton-like process, was prepared by acidification and calcination of red mud (RM). Catalyst characterization showed that iron phase of ACRM was mainly α-Fe2O3 and ACRM was a porous material with rough surface and loose structure. Degradation of butyl xanthate in Fenton-like process catalyzed by ACRM was investigated. Butyl xanthate was effectively degraded, and the degradation of butyl xanthate was well fitted by second order kinetic model. ACRM had an excellent long-term stability in a Fenton-like process. The possible mechanisms of hydroxyl radical production and butyl xanthate degradation in a Fenton-like process catalyzed by ACRM were presented.
通过对赤泥（RM）进行酸化和煅烧制备了一种用于类芬顿过程的新型催化剂——酸化/煅烧赤泥（ACRM）。催化剂表征表明，ACRM的铁相主要为α-Fe2O3，且ACRM是一种具有粗糙表面和疏松结构的多孔材料。研究了ACRM催化类芬顿过程中丁基黄药的降解情况。丁基黄药被有效降解，其降解过程符合二级动力学模型。ACRM在类芬顿过程中具有优异的长期稳定性。提出了ACRM催化类芬顿过程中羟基自由基产生及丁基黄药降解的可能机制。
