Plasma Discharge with Different Electrode Diameters for Reducing Methylene Blue Concentration

International Conference on Advanced Materials for Better Future 2017

Rasyidah, H.^1 ; Kusumandari^1 ; Saraswati, T.E.^2 ; Anwar, M.^3

Department of Physics, Faculty of Mathematics and Natural Sciences, Sebelas Maret University, Jl. Ir. Sutami 36A, Kentingan Surakarta

57126, Indonesia^1

Department of Chemistry, Faculty of Mathematics and Natural Sciences, Sebelas Maret University, Jl. Ir. Sutami 36A, Kentingan Surakarta

57126, Indonesia^2

Department of Electrical Engineering, Faculty of Engineering, Sebelas Maret University, Jl. Ir. Sutami 36A, Kentingan Surakarta

57126, Indonesia^3

关键词: Concentration reduction;    Electrode diameters;    Needle electrodes;    Organic solutions;    Plasma discharge;    Plasma discharge reactors;    Plasma technology;    Plasma treatment;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/333/1/012024/pdf
DOI  :  10.1088/1757-899X/333/1/012024

来源: IOP

【 摘 要 】

Recently, plasma technology has gained attention since it overcomes the shortcomings of water treatment. This research studies the effect of electrode diameter of plasma discharge reactors on the concentration reduction of methylene blue as an organic solution. The plasma discharge reactor was built from a pair of stainless needle electrodes connected with high-AC voltage. The electrodes were placed approximately 2 mm above the solution and stirred at 5.5 rpm. The diameters of the electrodes were 2, 3.2 and 4 mm. The times for plasma treatment were set at 2, 4, 6, 8 and 10 min. Absorbance, temperature and pH of the solution were measured to know the effects of electrode diameter of the plasma reactor. Absorbance and pH significantly decreased after plasma treatment. The best of the absorbance reduction were obtained when the sample was treated under plasma discharge using the smallest diameter electrodes for 8-10 min.