Deposition of Oxide Layer on Aluminium Via Plasma Electrolysis Method in Alkali Solutions by Unipolar Pulsed Current System and Study of its Physical Properties

2008 ◽  
Vol 2 (1) ◽  
pp. 74-82 ◽  
Author(s):  
N. Parvini Ahmadi ◽  
R.A. Khosroshah ◽  
B. Baghal Asl
Keyword(s):  
Physical Properties ◽  
Oxide Layer ◽  
Current System ◽  
Pulsed Current ◽  
Plasma Electrolysis ◽  
Alkali Solutions ◽  
Electrolysis Method

scholarly journals Degradation of Remazol Brilliant Blue Using Plasma Electrolysis Method with NaCl and Fe2+ Ion Addition

2018 ◽  
Vol 67 ◽  
pp. 01012 ◽  
Author(s):  
Nelson Saksono ◽  
Dwiputra Muhammad Zairin ◽  
Fikri Averous
Keyword(s):  
Hydroxyl Radicals ◽  
Textile Industry ◽  
Degradation Process ◽  
Air Injection ◽  
Ion Concentration ◽  
Brilliant Blue ◽  
Initial Concentration ◽  
Plasma Electrolysis ◽  
Good Potential ◽  
Electrolysis Method

Remazol Brilliant Blue is a dye waste mostly generated by the textile industry and can be very dangerous to the environment. Plasma electrolysis is a method that can produce hydroxyl radicals in large quantities in order to degrade the dye compounds. This study aims to test the ability of plasma electrolysis method to degrade Remazol Brilliant Blue wastewater using NaCl as electrolyte, with the addition of Fe2+ ion and air injection. Before the degradation process was carried out, permanganometric test was performed to see the production of hydroxyl radicals with the variations of electrolyte concentration and voltage. The degradation process were investigated more specifically by looking at the effect of Fe2+ ion concentration and the initial concentration of Remazol Brilliant Blue. Remazol Brilliant Blue degradation reached 98.5% in 30 minutes where the initial concentration of Remazol Brilliant Blue is 100 ppm, voltage of 750 V, NaCl concentration 0.03 M,with the addition of 40 ppm Fe2+ ion and air injection. The results show that plasma electrolysis with NaCl as electrolyte using air injection has a good potential in degrading dye wastewater in the environment.

scholarly journals Efek Suhu dan Injeksi Udara pada Penyisihan Limbah Pewarna Tekstil Remazol Red dengan Metode Elektrolisis Plasma

2020 ◽  
Vol 18 (1) ◽  
pp. 30
Author(s):  
Tri S. Budikania ◽  
Dian R. Suminar ◽  
Eva F. Karamah ◽  
Nelson Saksono
Keyword(s):  
Energy Consumption ◽  
Hydroxyl Radicals ◽  
Liquid Waste ◽  
Air Injection ◽  
Solution Temperature ◽  
H2o2 Production ◽  
Textile Dye ◽  
Plasma Electrolysis ◽  
Electrolysis Method ◽  
Remazol Red

Abstrak. Limbah pewarna industri tekstil merupakan limbah cair yang sulit teroksidasi dan berbahaya bagi lingkungan. Radikal hidroksil (•OH) merupakan spesies yang sangat efektif dalam mengoksidasi berbagai limbah cair organik seperti limbah pewarna.  Metode Elektrolisis Plasma sangat produktif menghasilkan radikal Hidroksil sehingga efektif dalam menyisihkan (mendegradasi) berbagai jenis limbah pewarna tekstil seperti Remazol Red. Penelitian ini bertujuan mengoptimalkan proses degradasi remazol red RB 133 dan konsumsi energinya menggunakan metode Elektrolisis Plasma melalui pengaturan suhu dan  injeksi gelembung  udara dalam larutan. Pembentukan H2O2 merupakan indikator pembentukan •OH pada reaksi Elektrolisis Plasma. Injeksi udara pada larutan limbah pewarna menurunkan arus listrik pada kurva karekateristik arus-tegangan. Kenaikan suhu larutan dari 45 oC menjadi 75 oC  selama 10 menit reaksi tampa injeksi udara menurunkan konsumsi energi  dari 229,9 kJ menjadi 219,5 kJ serta menurunkan  produksi H2O2 dari 4,8 mmol menjadi 3,1 mmol. Sementara injeksi udara pada suhu 75 oC selama 10 menit proses menurunkan konsumsi  listrik hingga 28,5% dan meningkatkan produksi H2O2 hingga 27,3 %. Namun demikian injeksi udara hanya meningkatkan degradasi Remazol Red sebesar 1,8 %.  Suhu optimum dicapai pada 55oC, dengan produksi H2O2 sebesar 5,7 mmol selama 30 menit. Injeksi udara udara mampu meningkatkan efektivitas proses. Hasil penelitian menunjukkan persen penyisihan mencapai 88,9% dengan  konsumsi energi sebesar 115,2 kJ dalam waktu 30 menit reaksi. Kata kunci: elektrolisis plasma, remazol red, gelembung udara. Abstract. Effect of Temperature and Air Injection on Degradation of Remazol Red Textile Dyes by Plasma Electrolysis Method. The textile dye waste is a liquid waste that is difficult to oxidize and dangerous for the environment. Hydroxyl radicals (• OH) are very effective species in oxidizing various organic liquid wastes such as Remazol Red. Plasma Electrolysis Method is very productive in producing Hydroxyl radicals, resulting in effective degradation of various types of textile dye waste such as Remazol Red. This study aims to optimize the degradation process of remazol red RB 133 and its energy consumption using the Plasma Electrolysis method through temperature regulation and injection of air bubbles in solution. The formation of H2O2 is used an indicator of the formation of •OH in the Plasma Electrolysis reaction. The Air injection decreases the electric current on the current-voltage characteristic curve. The solution temperature increases from 45oC to 75oC for 10 minutes reaction without air injection were able to reduce the energy consumption from 229.9 kJ to 219.5 kJ and H2O2 production from 4.8 mmol to 3.1 mmol. Meanwhile, the addition of air injection at 75oC within 10 minutes of reaction were able to reduce electricity consumption by 28.5% and increases H2O2 production by 27.3%. However, the addition of air injection only increased the degradation of Remazol Red by 1.8%. The optimum temperature was reached at 55oC, with H2O2 production of 5.7 mmol for 30 minutes. The addition of air injection has been shown to increase the effectiveness of the process. The results showed degradation percentage reached 88.9% with energy consumption of 115.2 kJ within 30 minutes of reaction. Keywords: air injection, plasma electrolysis, remazol red. Graphical Abstract

scholarly journals Plasma electrolysis method for reducing COD in tofu wastewater

2018 ◽  
Vol 67 ◽  
pp. 01002 ◽  
Author(s):  
Widya Pangestika ◽  
Nadira Kamilia Permatasari ◽  
Nelson Saksono
Keyword(s):  
Chemical Oxygen Demand ◽  
Oxygen Demand ◽  
Potential Method ◽  
High Concentration ◽  
Radical Species ◽  
Plasma Electrolysis ◽  
Electrolysis Method ◽  
Organic Wastewater

Chemical Oxygen Demand (COD) is one of pollution parameter that have to be reduced so the wastewater may not harm the environment. Tofu wastewater is one of the organic wastewater that have high concentration of COD. The level of COD in untreated tofu wastewater outnumbered 8000 mg/L. This parameter could be lowered by plasma electrolysis that produced radical species to degrade pollutants in the wastewater. Three variations had been done in this study, such as: the addition of Fe2+ ion as a catalyst, the voltage, and the depth of anode. It was shown that addition of 60 mg/L of Fe2+ ion in plasma electrolysis could degrade COD in tofu wastewater to 73%. The effect of the voltage also had been studied. By using the voltage at 750 V could discard COD as much as 85%. The last variation that was conducted in this study is the effect of the depth of anode in plasma electrolysis. The result showed that 73% of COD in tofu wastewater could be reduced by using the depth of anode 2 cm. All of these results showed that plasma electrolysis is a potential method to degrade pollution parameter, especially COD in tofu wastewater.

Design of air-core transformer for pulsed current system

2012 ◽  
Vol 24 (9) ◽  
pp. 2245-2249
Author(s):  
李兴群 Li Xingqun ◽  
张明 Zhang Ming ◽  
刘明海 Liu Minghai ◽  
常江 Chang Jiang ◽  
邓珊 Deng Shan ◽  
...  
Keyword(s):  
Current System ◽  
Pulsed Current ◽  
Air Core

scholarly journals Study of Plasma Electrolysis Method on Starch-Based Hybrid Latex Synthesis

2019 ◽  
Vol 1295 ◽  
pp. 012059
Author(s):  
N Saksono ◽  
A B Junior ◽  
E Gustaf ◽  
S S R Dyasti ◽  
M Chalid
Keyword(s):  
Plasma Electrolysis ◽  
Electrolysis Method ◽  
Hybrid Latex

Physical properties of pulsed current copper electrodeposits

1995 ◽  
Vol 30 (18) ◽  
pp. 4515-4522 ◽  
Author(s):  
M. R. Kalantary ◽  
D. R. Gabe
Keyword(s):  
Physical Properties ◽  
Pulsed Current

In SEM Study of Physical Properties of Semiconductor by Surface Electron Beam Exciting Potential

2001 ◽  
Vol 7 (S2) ◽  
pp. 486-487
Author(s):  
Wenguo Hu ◽  
Shiqiu Zhu ◽  
E.I. Rau
Keyword(s):  
Electron Beam ◽  
Physical Properties ◽  
Oxide Layer ◽  
Surface Potential ◽  
Sample Surface ◽  
Average Lifetime ◽  
Surface Oxide Layer ◽  
Contactless Method ◽  
Surface Electron ◽  
Exciting Potential

In this paper, we apply a novel contactless method that we study to investigate the physical properties of the semiconductor materials. This method is based upon the measurement of the surface electron beam exciting potential (SEBEP) on the sample surface. Its advantages include: no direct sample contact or connection needed that is unlike the electron beam inducing current (EBIC) method; no potential barrier required from the measurement.Electron probe irradiation can cause bending of the energy bands, variation of carriers and excitation of surface potential. The excited surface potential generates the SEBEP signal that can be detected by a SEBEP detector. It is necessary to emphasize that the electron beam can charge the surface that is under the oxide layer when it passes through the sample surface oxide layer.It is known that the diffusion length L and the average lifetime τ of the non-equilibrium carries can be measured by other methods such as the cathodoluminescent method and the contacting method..

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