Study of The Maximum Uptake Capacity on Various Sizes of Electric Arc Furnace Slag in Phosphorus Aqueous Solutions

Soft Soil Engineering International Conference 2015

Afnizan, W.M.W.^1 ; Hamdan, R.^2 ; Othman, N.^2

Faculty of Civil and Environmental Engineering, Universiti Tun Hussein Onn Malaysia (UTHM), Parit Raja, Johor, Batu Pahat

86400, Malaysia^1

Department of Engineering Technology, Faculty of Engineering Technology, Universiti Tun Hussein Onn Malaysia (UTHM), Parit Raja, Johor, Batu Pahat

86400, Malaysia^2

关键词: Agricultural activities;    Different particle sizes;    Electric arc furnace slags;    Laboratory experiments;    Particle size ranges;    Phosphorus concentration;    Steel slag;    Steel-making industries;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/136/1/012060/pdf
DOI  :  10.1088/1757-899X/136/1/012060

来源: IOP

【 摘 要 】

The high content of uncontrolled phosphorus concentration in wastewater has emerged as a major problem recently. The excessive amount of phosphorus that is originated from domestic waste, unproper treated waste from septic tanks, as well as agricultural activities have led to the eutrophication problem. Therefore, a laboratory experiment was initiated to evaluate the potential of the Electric Arc Furnace Slag (EAFS), a by-product waste from steel making industry in removing phosphorus concentrations in aqueous solutions. In this work several particle sizes ranging from (9.5-12.4 mm, 12.5-15.9 mm, 16.0-19.9 mm, 20.0-24.9 mm, 25-37.4 mm) with a known weight (20±0.28 g, 40±0.27 g, 60±0.30 g, 80±0.29 g and 100±0.38 g) were used to study the effect of different particle sizes towards phosphorus removal. Each particle size of EAFS was shaken in synthetic phosphorus solutions (10 mg/l, 20 mg/l, 30 mg/l, 40 mg/l and 50 mg/l) at a contact time of 2 hours. Final concentrations of phosphorus were sampled and the measurement was made using WESTCO Discrete Analyzer equipment. Results showed that the highest of the maximum uptake capacity of each EAFS particle size distribution achieved at 0.287, 0.313, 0.266, 0.241 and 0.25 mg/g as particle size range was varied from 9.5-12.4 mm to 25-37.4 mm. In conclusion, the maximum uptake capacity of each EAFS mostly was determined to occur at adsorbent weight of 20 to 40 g in most conditions.