Salicylic acid elimination by pulsed corona discharge as novel technique for wastewater treatment

2021 ◽  
Author(s):  
Gehad M. Abd El-Gelil ◽  
Moustapha S. Mansour ◽  
Ebrahiem Esmail Ebrahiem ◽  
Hanaa Abou-Gabal ◽  
Ahmed El Saghir
Keyword(s):  
Wastewater Treatment ◽  
Salicylic Acid ◽  
Corona Discharge ◽  
Pulsed Corona Discharge ◽  
Novel Technique ◽  
Pulsed Corona

Degradation of Hydroquinone by Pulsed Corona Discharge Combined with Ozone Process

2011 ◽  
Vol 356-360 ◽  
pp. 1909-1913 ◽  
Author(s):  
Hong Ai Zheng ◽  
Jian She Liu ◽  
Li Li Pan
Keyword(s):  
Wastewater Treatment ◽  
Organic Carbon ◽  
Corona Discharge ◽  
High Efficiency ◽  
Oxygen Demand ◽  
Cod Removal ◽  
Feed Concentration ◽  
Pulsed Corona Discharge ◽  
Pulsed Corona ◽  
In Series

Owing to toxicity of pharmacy wastewater to microbe, commonly used biodegradation is often limited in application; accordingly exploiting new ways of the wastewater treatment with high efficiency is a hot topic. As a new efficient advanced oxidation, pulsed corona discharge combining with ozone is attracting more and more attention. In this study, a special reactor was designed, in addition, the removal of TOC(Total Organic Carbon) and COD (Chemical Oxygen Demand)of simulant pharmacy wastewater containing hydroquinone (500mg/L) by pulsed corona discharge combining with ozone were investigated . It was showed that the TOC and COD removal (53.8% and 72.3%) by the combined technology was much higher than by using the two techniques in series when all the samples were treated 40mins.The two methods in combination have a synergistic effect. TOC and COD removal could be improved obviously when NaCl feed concentration increased from 0 to1000 mg/L, yet further increase in NaCl feed led to a markedly decrease removal efficiency of TOC and COD.

scholarly journals Hospital wastewater treatment with pilot-scale pulsed corona discharge for removal of pharmaceutical residues

2018 ◽  
Vol 6 (2) ◽  
pp. 1569-1577 ◽  
Author(s):  
Petri Ajo ◽  
Sergei Preis ◽  
Timo Vornamo ◽  
Mika Mänttäri ◽  
Mari Kallioinen ◽  
...  
Keyword(s):  
Wastewater Treatment ◽  
Corona Discharge ◽  
Pilot Scale ◽  
Hospital Wastewater ◽  
Pulsed Corona Discharge ◽  
Pharmaceutical Residues ◽  
Pulsed Corona

Study of Wastewater Treatment by OH Radicals Using DC and Pulsed Corona Discharge over Water

2006 ◽  
Vol 45 (4A) ◽  
pp. 2743-2748 ◽  
Author(s):  
Fumiyoshi Tochikubo ◽  
Yasutomo Furuta ◽  
Satoshi Uchida ◽  
Tsuneo Watanabe
Keyword(s):  
Wastewater Treatment ◽  
Corona Discharge ◽  
Oh Radicals ◽  
Pulsed Corona Discharge ◽  
Pulsed Corona

scholarly journals Oxidation of Aqueous Toluene by Gas-Phase Pulsed Corona Discharge in Air-Water Mixtures Followed by Photocatalytic Exhaust Air Cleaning

Catalysts ◽  
2021 ◽  
Vol 11 (5) ◽  
pp. 549
Author(s):  
Maarja Kask ◽  
Marina Krichevskaya ◽  
Sergei Preis ◽  
Juri Bolobajev
Keyword(s):  
Corona Discharge ◽  
Gas Phase ◽  
Contact Time ◽  
Closed Loop ◽  
Simultaneous Treatment ◽  
Pulsed Corona Discharge ◽  
Air Cleaning ◽  
Pulsed Corona ◽  
Volatile Organic ◽  
Gaseous Toluene

The treatment of wastewaters containing hazardous volatile organic compounds (VOCs) requires the simultaneous treatment of both water and air. Refractory toluene, extensively studied for its removal, provides a basis for the comparison of its abatement methods. The oxidation of aqueous toluene by gas-phase pulsed corona discharge (PCD) in combination with the subsequent photocatalytic treatment of exhaust air was studied. The PCD treatment showed unequalled energy efficiencies in aqueous and gaseous toluene oxidation, reaching, respectively, up to 10.5 and 29.6 g·kW−1·h−1. The PCD exhaust air contained toluene residues and ozone in concentrations not exceeding 0.1 and 0.6 mg·L−1, respectively. As a result of the subsequent photocatalytic treatment, both airborne residues were eliminated within a contact time with TiO2 as short as 12 s. The results contribute to the possible application of the studied approach in closed-loop energy-saving ventilation systems.

Effects of Pulsed Corona Discharge on SO2Absorption into Water from an SO2/Air Mixture

2003 ◽  
Vol 42 (9) ◽  
pp. 2030-2032
Author(s):  
Joo-Youp Lee ◽  
Soon-Jai Khang ◽  
Tim C. Keener
Keyword(s):  
Corona Discharge ◽  
Pulsed Corona Discharge ◽  
Pulsed Corona

Pulsed corona discharge for degradation of aqueous humic substances

2011 ◽  
Vol 11 (2) ◽  
pp. 238-245 ◽  
Author(s):  
Iris Panorel ◽  
Iakov Kornev ◽  
Henry Hatakka ◽  
Sergei Preis
Keyword(s):  
Energy Efficiency ◽  
Corona Discharge ◽  
Humic Substances ◽  
Pulse Generator ◽  
Pulse Repetition Frequency ◽  
Water Flow Rate ◽  
Oh Radicals ◽  
Pulsed Corona Discharge ◽  
Pulsed Corona ◽  
Voltage Pulse Generator

The research into oxidation of aqueous humic substances (HS) with pulsed corona discharge (PCD) was undertaken to estimate the energy efficiency of the treatment. The PCD system consists of a voltage pulse generator and reactor, in which the gas-phase discharge generating OH radicals and ozone treats the water showered between electrodes. The influence of HS initial concentration, pulse repetition frequency, water flow rate, and the atmosphere composition was evaluated by the decrease in total organic carbon (TOC) and color. The PCD treatment reduced TOC by 40 to 50% and the color by up to 97%. The PCD energy efficiency ranged about 20 g kW−1 h−1 in air and 30 g kW−1 h−1 in oxygen for the lowest initial color of about 50 Pt-Co degrees. Ozone contributed about 30% to the color reduction and only 15% to the reduction in TOC, indicating predominant role of OH radicals in mineralization of oxidation by-products.

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