The capacity of modified nickel catalysts derived from discharged catalyst of fertilizer plants for NOx treatment

2nd International Conference on Chemical Engineering (ICCE) UNPAR

Ha, T.M.P.^1,2 ; Luong, N.T.^2 ; Le, P.N.^2

University of Social Science and Humanity, Vietnam National University in Ho Chi Minh City, Viet Nam^1

Vietnam Petroleum Institute, Viet Nam^2

关键词: Economic and environmental benefits;    Environmental problems;    Hazardous wastes;    Manganese dioxide;    Modified catalysts;    Modified nickel catalysts;    Start temperature;    Surface water sources;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/162/1/012021/pdf
DOI  :  10.1088/1757-899X/162/1/012021

来源: IOP

【 摘 要 】

In Vietnam for recent years, a large amount of hazardous waste containing nickel (Ni) derived from discharged catalyst of fertilizer plants has caused environmental problems in landfill overloading and the risk of soil or surface water sources pollution. Taking advantage of discharged catalyst, recycling Ni components and then synthesizing new catalysts apply for mono-nitrogen oxides (NOx) treatments is an approach to bring about both economic and environmental benefits. This study was carried out with the main objective: Evaluate the performance of modified catalysts (using recovered Ni from the discharged RKS-2-7H catalyst of Phu My Fertilizer Plant) on NOxtreatment. The catalysts was synthesized and modified with active phases consist of recovered Ni and commercial Barium oxide (BaO), Manganese dioxide (MnO2) / Cerium (IV) oxide (CeO2) on the support Aluminium oxide (γ-Al2O3). The results show that the modified catalysts with Ni, Ba, Ce was not more beneficial for NOx removal than which with Ni, Ba, Mn. 98% NOxremoval at 350°C with the start temperature at 115°C and the T60 value at 307°C can be obtained with 10Ni10Ba10Mn/Al catalyst.