Marigold wastewater treatment in a lab-scale and a field-scale continuous bipolar-mode electrocoagulation system

Damaraju, Madhuri; Bhattacharyya, Debraj; Panda, Tarun K.; Kurilla, Kiran Kumar

doi:10.1016/j.jclepro.2019.118693

Cited by 23 publications

(8 citation statements)

References 40 publications

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“…Interest has recently been to electrocoagulation (EC), which is the in situ production of coagulants by the electrification of metal electrodes immersed in the solution being treated as it has several advantages including cost-effectiveness, simplicity, and the need for less chemical additives (de la Fuente et al, 2019;Kuokkanen, 2016). EC technology has also proved to be efficient (Bazrafshan et al, 2015;Damaraju et al, 2020), the literature indicating the sensitivity of EC to the presence of OM in water (Khandegar and Saroha, 2013;Mohora et al, 2014). OM can cause more complex problems in EC plants though.…”

Section: Introductionmentioning

confidence: 99%

“…MW heating is used to decompose the OM-iron complex, which enables the EC unit to remove the heavy metal. Coupling MW and EC technologies in one unit not only facilitates the removal of refractory pollutant, but also helps to minimise the environmental impacts of the treatment process as neither technology requires chemical additives to work, nor do they produce toxic secondary pollutants (Damaraju et al, 2020;Hashim, 2017).…”

Section: Introductionmentioning

confidence: 99%

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Water purification from metal ions in the presence of organic matter using electromagnetic radiation-assisted treatment

Hashim

Shaw

Alkhaddar

et al. 2021

Journal of Cleaner Production

106

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Water purification from metal ions in the presence of organic matter using electromagnetic radiation-assisted treatment

Hashim

Shaw

Alkhaddar

et al. 2021

Journal of Cleaner Production

106

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“…To improve the performance of EC, the number of electrodes in monopolar or bipolar configuration may be increased as more number of electrodes will result in more electrode surface area leading to the higher current through electrodes which in turn increases the release of more number of ions and hydroxyl ion flocs aiding the adsorption of dye molecule [25]. This type of configuration has been tried by very few researchers for dye removal [26,27], and also very few works have been explored in both batch and continuous modes of treatment [28,29].…”

Section: Introductionmentioning

confidence: 99%

Utilization of Waste Aluminium Foil as a Sacrificial Electrode for the Treatment of Wastewater

Perumalsamy

Chithra

Rajamanickam

2021

J. Electrochem. Sci. Technol

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In this study, the use of waste food grade aluminium foil and mild steel as a sacrificial electrode in an electrocoagulation system was developed to remove reactive red 111 from wastewater. The effect of different parameters like pH, current density, electrode material, and different electrode configurations was investigated. Optimum operating conditions for maximum COD removal were determined as, 6 mA/cm 2 current density and 30 min at 5 pH for aluminium foil and 7 pH for mild steel. Maximum COD reduction obtained at optimum conditions using monopolar 4 electrodes, monopolar 2 electrodes and bipolar electrode configuration were 96.5%, 89.3%, and 90.2% for Mild steel as a sacrificial electrode and 92.1%, 84.2%, and 88.6% for aluminium foil as a sacrificial electrode. The consumption of electrode and energy for both the electrodes of different configurations were calculated and compared. Using batch experimental data, a continuous-flow reactor was developed. Sludge analysis using Fourier Transform Infra-Red Spectroscopy (FTIR) analysis was done. Different adsorption kinetic models and isotherms were developed and it was found that pseudo second-order model and Langmuir isotherm fit best with the experimental data obtained.

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“…The organic pollutants are removed by adsorption on the coagulant, generated during the electrochemical reactions, or passive oxidation at the electrode (Damaraju et al, 2020). The removal of the inorganic pollutants takes place through adsorption on to coagulant or due to chemical precipitation; both the mechanisms are pH‐dependent (Damaraju et al, 2020b). EC process, when coupled with other treatments like anaerobic fixed film bed reactor (AFFBR) and photocatalysis, enhanced the biodegradability of emerging contaminants (Zaied et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

“…The ECR consisted of a parallel array of iron plates, also called sacrificial electrodes, inserted between the two end electrodes, which are connected to the power supply. The continuous‐flow bipolar mode electrochemical reactors require a smaller footprint, reaction time, and energy compared to conventional monopolar mode electrochemical reactors for the same degree of wastewater treatment (Damaraju et al, 2020b).…”

Section: Introductionmentioning

confidence: 99%

Domestic wastewater treatment in a coupled sequential batch reactor‐electrochemical reactor process

Akula

Gaddam

Damaraju

et al. 2020

Water Environment Research

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The effectiveness of a sequenced biological–physicochemical reactor system for treating sewage was studied. The biological degradation was conducted in a Sequential Batch Reactor, which had innovative features for simplifying the operation and maintenance of the reactor. The reactor was operated at 4, 6, 8, and 12 hr cycle. Up to 82% removal of Chemical Oxygen Demand (COD), 50% removal of Dissolved Organic Carbon (DOC), 45% removal of Total Nitrogen (TN), and 45% removal of Total Phosphorus (TP) were achieved. The treated effluent was further polished in a continuous‐flow bipolar‐mode electrochemical reactor to remove additional recalcitrant organic matter from the wastewater. The process parameters were optimized using Response Surface Methodology. At the optimum condition (pH = 8.7; Current = 1.0; reaction time = 9.0), up to 90% removal of COD, 67% removal of DOC, 61% removal of TN, and 99.9% removal of TP were achieved in the coupled system. Micropollutants belonging to Pharmaceutically Active Compounds, pesticides, etc., were significantly removed. The coupled system completely removed Salmonella, Pseudomonas, and Staphylococcus. However, coliforms were detected at the outlet samples. A UV or ozone disinfection treatment is recommended for the safe reuse of the treated water for nonpotable purposes. Practioner points Sequential sequential batch reactor‐electrochemical reactor process (SBR‐ECR) technology is effective for micropollutant removal from sewage. The coupled SBR‐ECR system requires less footprint compared to conventional biological systems for wastewater treatment. Carbon material balance study revealed that more than 60% of carbon escapes from wastewater in the form of CO2

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Marigold wastewater treatment in a lab-scale and a field-scale continuous bipolar-mode electrocoagulation system

Cited by 23 publications

References 40 publications

Water purification from metal ions in the presence of organic matter using electromagnetic radiation-assisted treatment

Water purification from metal ions in the presence of organic matter using electromagnetic radiation-assisted treatment

Utilization of Waste Aluminium Foil as a Sacrificial Electrode for the Treatment of Wastewater

Domestic wastewater treatment in a coupled sequential batch reactor‐electrochemical reactor process

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