Treatment of olive oil mill wastewater by a pulsed high-voltage discharge process; process optimization and combination with Fe+2and H2O2

2014 ◽  
Vol 90 (6) ◽  
pp. 1040-1050 ◽  
Author(s):  
Özlem Selçuk Kuşçu ◽  
Ekin Eke
Keyword(s):  
Olive Oil ◽  
Process Optimization ◽  
High Voltage ◽  
Discharge Process ◽  
Olive Oil Mill Wastewater ◽  
High Voltage Discharge

Efficient removal of phenol from aqueous solution by the pulsed high-voltage discharge process in the presence of H2O2

2019 ◽  
Author(s):  
Chem Int
Keyword(s):  
Removal Efficiency ◽  
High Voltage ◽  
Treatment Time ◽  
Phenol Degradation ◽  
Temperature Treatment ◽  
Phenol Removal ◽  
Discharge Process ◽  
Efficient Removal ◽  
Solution Ph ◽  
High Voltage Discharge

This study investigates the phenol degradation by pulsed high-voltage discharge (PHVD). The effect of solution pH, temperature, treatment time and initial phenol concentration on phenol degradation were examined. The results showed that the phenol removal efficiency was increased with the rise of pH, temperature and treatment time. The phenol removal efficiency was 48%, 46%, 42% and 34%, respectively at 10, 40, 90 and 160 ppm phenol solutions. The phenol degradation rate was increased markedly when H2O2 was added into the solution. Almost complete phenol degradation (100%) was achieved when 20-40 mM of H2O2 was added into phenol solutions of 40, 90 and 180 ppm.

Nanocomposite of Tin and Lead Oxides Prepared in Plasma of Pulsed High-Voltage Discharge Process: Synthesis and Electrochemical Characteristics

2020 ◽  
Vol 312 ◽  
pp. 335-340
Author(s):  
Sergey V. Gnedenkov ◽  
Valery G. Kuryavyi ◽  
Denis P. Opra ◽  
Sergey L. Sinebryukhov ◽  
Alexander A. Sokolov ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
High Voltage ◽  
Mixed Oxides ◽  
Lithium Ion ◽  
Reversible Capacity ◽  
Potential Range ◽  
Electrochemical Characteristics ◽  
Discharge Process ◽  
X Ray ◽  
High Voltage Discharge

In the present paper, a composite containing mixed oxides of tin and lead has been synthesized by the method of pulsed high-voltage discharge. Material was characterized by X-ray diffraction, scanning electron microscopy, energy-dispersive X-ray analysis and transmission electron microscopy. The composite consists of SnO2 and PbO particles with an average size of ~350 nm, and SnPb2O4 nanowhiskers with size of 100 nm in diameter and few microns in length. The electrochemical performance of nanocomposite as a potential anode of lithium-ion battery has been investigated by the cyclic voltammetry and galvanostatic charge/discharge test in the potential range of 3.0–0.005 V. The reversible capacity of 821 mA·h/g was realized after 5-fold cycling at a current density of 100 mA/g. It was established that further cycling of the material is accompanied by a dramatic capacity fade: only 13 % of the initial capacity was obtained already after 10 cycles. The observed degradation in performance of nanocomposite results from its inability to compensate large lithiation/delithiation-induced volume expansion.

Parameters of the Plasma of a Large-Scale High-Voltage Discharge in Air at Reduced Pressures

2019 ◽  
Vol 45 (6) ◽  
pp. 527-536 ◽  
Author(s):  
A. V. Strikovskiy ◽  
S. V. Korobkov ◽  
M. E. Gushchin ◽  
A. A. Evtushenko ◽  
I. Yu. Zudin
Keyword(s):  
High Voltage ◽  
Large Scale ◽  
High Voltage Discharge ◽  
Reduced Pressures

Potential of Olive Oil Mill Wastewater as a Source of Polyphenols for the Treatment of Skin Disorders: A Review

2021 ◽  
Author(s):  
Morgane Carrara ◽  
Mary T. Kelly ◽  
Florence Roso ◽  
Michel Larroque ◽  
Delphine Margout
Keyword(s):  
Olive Oil ◽  
Skin Disorders ◽  
Olive Oil Mill Wastewater

scholarly journals Observation of hard radiations in a laboratory atmospheric high-voltage discharge

2017 ◽  
Vol 50 (16) ◽  
pp. 165202 ◽  
Author(s):  
A V Agafonov ◽  
V A Bogachenkov ◽  
A P Chubenko ◽  
A V Oginov ◽  
A A Rodionov ◽  
...  
Keyword(s):  
High Voltage ◽  
High Voltage Discharge

scholarly journals Pulsed Discharge Plasma in High-Pressure Environment for Water Pollutant Degradation and Nanoparticle Synthesis

Plasma ◽  
2021 ◽  
Vol 4 (2) ◽  
pp. 309-331
Author(s):  
Wahyu Diono ◽  
Siti Machmudah ◽  
Hideki Kanda ◽  
Yaping Zhao ◽  
Motonobu Goto
Keyword(s):  
High Pressure ◽  
High Voltage ◽  
Electrode Materials ◽  
Discharge Plasma ◽  
Type System ◽  
Nanoparticle Synthesis ◽  
Plasma Source ◽  
Synthesis Of Nanoparticles ◽  
Water Pollutant ◽  
High Voltage Discharge

The application of high-voltage discharge plasma for water pollutant decomposition and the synthesis of nanoparticles under a high-pressure argon gas environment (~4 MPa) was demonstrated. The experiments were carried out in a batch-type system at room temperature with a pulsed DC power supply (15.4 to 18.6 kV) as a discharge plasma source. The results showed that the electrode materials, the pulsed repetition rates, the applied number of pulses, and the applied voltages had a significant effect on the degradation reactions of organic compounds. Furthermore, carbon solid materials from glycine decomposition were generated during the high-voltage discharge plasma treatment under high-pressure conditions, while Raman spectra and the HRTEM images indicated that titanium dioxide with a brookite structure and titanium carbide nanoparticles were also formed under these conditions. It was concluded that this process is applicable in practice and may lead to advanced organic compound decomposition and metal-based nanoparticle synthesis technologies.

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