Escherichia coli inactivation using a hybrid ultrasonic–electrocoagulation reactor

Hashim, Khalid; Ali, Shaimaa Satae M.; Al-Rifaie, Jawad K.; Kot, Patryk; Shaw, Andy; Khaddar, Rafid Al; Idowu, Ibijoke; Gkantou, Michaela

doi:10.1016/j.chemosphere.2020.125868

Cited by 104 publications

(27 citation statements)

References 41 publications

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“…The decrease in the E. coli count in our research findings was in accordance with these previous reports. Hence, it could be hypothesized that the possible mechanism behind the antimicrobial potential of these extracts could be due to precipitation or cell membrane disruption [ 50 , 51 ]. Altogether, the combined extract (seed and leaf) showed a better coagulation potential than the individual seed and leaf extracts of Moringa oleifera , improving various water quality parameters.…”

Section: Discussionmentioning

confidence: 99%

Study to Investigate the Potential of Combined Extract of Leaves and Seeds of Moringa oleifera in Groundwater Purification

Alam

Pandey²,

Khan³

et al. 2020

IJERPH

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Several parts of the Moringa oleifera plant have revealed incredible potential for water quality improvement. However, the purification potential of a combined leaf and seed extract of Moringa oleifera plants remains unexplored. To the best of our knowledge, this research would be the first to work towards exploiting the combined potential of a leaf and seed extract of the Moringa oleifera plant in the process of water purification. In this study, we investigated the combined effectiveness of the leaf and seed extract in the purification of groundwater. The jar test method was used to analyze the effectiveness of Moringa plant extract (in combination) on different quality parameters of groundwater. Treatment with the combined plant extract (seed and leaf) resulted in significant improvement of various physicochemical (hardness, pH, turbidity, Total Dissolved Solid (TDS), and metallic impurities) and biological parameters (E.coli count) over individual seed and leaf extracts in groundwater samples. Experimental findings have strongly shown the enhanced purification efficacy of the hexane extract of combined plant materials in comparison to the individual extracts, thereby providing us with a potent natural coagulant that could combat the side effects of chemical coagulants.

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Section: Discussionmentioning

confidence: 99%

Study to Investigate the Potential of Combined Extract of Leaves and Seeds of Moringa oleifera in Groundwater Purification

Alam

Pandey²,

Khan³

et al. 2020

IJERPH

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“…2) A fresh hybrid ultrasonic-EC device was presented to kill E. coli existing in water [68]. The setup may be a helpful and cost-efficient choice to classical methods for disinfecting water.…”

Section: Discussionmentioning

confidence: 99%

“…Once again Hashim et al [68] proposed a fresh hybrid ultrasonic-EC device to demobilize E. coli in water. The novel hybrid setup is composed of an ultrasonic bath fitted with four perforated aluminum electrodes.…”

Section: Ultrasonication Of Electrocoagulation Reactor For Killing Esmentioning

confidence: 99%

Electrocoagulation Process in the Context of Disinfection Mechanism

Ghernaout¹,

Elboughdiri²

2020

OALib

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During the last three decades, the electrocoagulation (EC) process has known an exemplary renaissance in the field of water and wastewater treatment. Several researchers focused on applying this electrochemical technology in removing diverse pollutants such as pathogens. During EC method, the coagulant is furnished via solubilizing sacrificial electrodes upon an applied electric field. The easiness of the technology and the side phenomena involving the generation of gas bubbles are the major advantages. This work discusses briefly the main achievements and mechanisms in employing EC in disinfecting water. In the EC process, the microbes may be demobilized thanks to the direct adsorption on the surface of the anode pursued by electron transfer, and physical elimination through floating pathogens with formed hydrogen gas and/or precipitating with the produced flocs. Integrating EC with free radical assisted processes (e.g., electrooxidation), magnetic field and/or ultrasonic field remains an encouraging method to promote its implantation at full scale. Membrane processes should be considered as safe barriers towards disinfection by-products and hydroxyl radicals.

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“…Therefore, ultrasound wave reduces the resistance of microorganisms by inducing physical damage to them compared to the temperature, and similarly, can inactivate enzymes (Samani & Lorigooini, 2015; Valero et al., 2007). In addition to inactivating microorganisms, this process also prevents the corruption caused by enzymes resulting from the metabolic activities of microorganisms (Hashim et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

The investigation and optimization of two combined pasteurization methods of ultrasonic‐pulse electric field and hydrodynamic‐pulse electric field on sour cherry juice using RSM‐TOPSIS

Samani

Behruzian

Khoshtaghaza

et al. 2020

J Food Process Preserv

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In this research, sour cherry juice (SCJ) was treated using a combination of the Ultrasound‐Pulsed electric field (UP) wave and Hydrodynamic‐Pulsed electric field (HP) systems. The main objective of this study was to investigate the effect of the combination of the pulsed electric field, ultrasonic wave, and hydrodynamic as new non‐thermal technologies on the inactivation of microorganisms, energy changes in one cycle of E. coli inactivation, and the quality of SCJ. The range of experimental conditions was as follows: electrical field intensity: 5–10 kV/cm, electric field time: 5–35 s, ultrasound power: 100–200 W, ultrasonic exposure time: 3–5 min, and hydrodynamic exposure time: 3–9 min. The results of the treatments indicated that the combination methods maintained the total phenolic content, anthocyanins, and vitamin C compared to the conventional method. By TOPSIS, a comparison between two combination methods showed that the pasteurization with UP performed better than the HP method. Practical applications One of the most effective ways for the utilization of nutritional benefits of fruits is to use their extracts or juices. Also, to kill any harmful bacteria, most juices thermally are pasteurized. Where such treatments often lead to a substantial decrease in their quality (vitamins, phenolics, anthocyanins, etc.). For this goal, researchers are following up on new methods to dispel the adverse effects of thermal pasteurization. The present research aimed to assay the simultaneous effect of the ultrasonic‐AC electric field and hydrodynamic‐AC electric field to eliminate microorganisms and preserve the quality of SCJ. The current research recommends a novel and combined method for SCJ pasteurization and this method can benefit the food industry.

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Escherichia coli inactivation using a hybrid ultrasonic–electrocoagulation reactor

Cited by 104 publications

References 41 publications

Study to Investigate the Potential of Combined Extract of Leaves and Seeds of Moringa oleifera in Groundwater Purification

Study to Investigate the Potential of Combined Extract of Leaves and Seeds of Moringa oleifera in Groundwater Purification

Electrocoagulation Process in the Context of Disinfection Mechanism

The investigation and optimization of two combined pasteurization methods of ultrasonic‐pulse electric field and hydrodynamic‐pulse electric field on sour cherry juice using RSM‐TOPSIS

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