Phosphorus removal by electric arc furnace steel slag adsorption

4th International Conference on Mechanical Engineering Research

Lim, J.W.^1,2 ; Lee, K.F.^1 ; Chong, Thomas S.Y.^2 ; Abdullah, L.C.^2 ; Razak, M.A.^2 ; Tezara, C.^1

Department of Mechanical Engineering, Faculty of Engineering and Quantity Surveying, INTI International University, Nilai, Negeri Sembilan, Malaysia^1

Department of Chemical and Environmental Engineering, Faculty of Engineering, UPM Serdang, Universiti Putra Malaysia, Malaysia^2

关键词: Adsorption capacities;    Agricultural activities;    Electric arc furnace;    Initial concentration;    Lake sand reservoirs;    Phosphorus concentration;    Physical and chemical properties;    Variation of Parameters;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/257/1/012063/pdf
DOI  :  10.1088/1757-899X/257/1/012063

来源: IOP

【 摘 要 】

As to overcome the eutrophication in lakes and reservoirs which is resulted from excessive input of phosphorus due to rapid urbanization or uncontrolled agricultural activities, Electric Arc Furnace steel slag (EAFS), a steelmaking by-product, in which the disposal of this industrial waste considered economically unfavourable yet it's physical and chemical properties exhibits high potential to be great P adsorbent. The objective of this study was to identify most suitable mathematical model in description of adsorption by using traditional batch experiment and to investigate the effect on Phosphorus removal efficiency and Phosphorus removal capacity by EAFS adsorption through variation of parameters such as pH, size of slag and initial concentration of Phosphorus. Result demonstrated that, Langmuir is suitable in describing Phosphorus removal mechanisms with the Maximum Adsorption Capacity, Qmof 0.166 mg/g and Langmuir Constant, KLof 0.03519 L/mg. As for effect studies, smaller size of adsorbent shows higher percentage (up to 37.8%) of Phosphorus removal compared to the larger size. Besides that, the experiment indicated a more acidic environment is favourable for Phosphorus removal and the amount of Phosphorus adsorbed at pH 3.0 was the highest. In addition, the adsorption capacity increases steadily as the initial Phosphorus concentration increases but it remained steady at 100mg P/L. Eventually, this study serves as better understanding on preliminary studies of P removal mechanisms by EAFS.