Various wastewaters treatment by sono-electrocoagulation process: A comprehensive review of operational parameters and future outlook

The aim of this study is to examine the effect of operational parameters on fluoride removal using electrocoagulation method. For this purpose, various operational parameters including initial pH, initial fluoride concentration, applied current, reaction time, electrode connection mode, anode material, electrolyte salt, electrolyte concentration, number of electrodes and interelectrode distance were investigated. The highest defluoridation efficiency achieved at initial pH 6. In the case of initial fluoride concentration, maximum removal efficiency (98.5%) obtained at concentration of 25mg/l. The increase of applied current and reaction time improved defluoridation efficiency up to 99%. The difference of fluoride removal efficiencies between monopolar and bipolar series and monopolar parallel were significant, especially at reaction time of 5 min. When aluminum used as anode material, higher removal efficiency (98.5%) achieved compared to that of iron anode (67.7%). The best electrolyte salt was NaCl with the maximum defluoridation efficiency of 98.5% compared to KNO3 and Na2SO4. The increase of NaCl had no effect on defluoridation efficiency. Number of electrodes had little effect on the amounts of Al3+ ions released in the solution and as a result defluoridation efficiency. Almost the same fluoride removal efficiency obtained for different interelectrode distances.

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Application of electrocoagulation for water conditioning

Environmental engineering ◽

10.37023/ee.6.2.3 ◽

2019 ◽

Vol 6 (2) ◽

pp. 59-70

Author(s):

Hana Posavčić ◽

Ivan Halkijević ◽

Živko Vuković

Keyword(s):

Water Source ◽

Point Of View ◽

Pollutant Removal ◽

Operating Costs ◽

Mechanical Equipment ◽

Operational Parameters ◽

Economic Point ◽

Water Conditioning ◽

Electrocoagulation Process

Water conditioning is a method of removing altering minerals, chemicals and contaminants from a water source and it is carried out on facilities equipped with the corresponding electro-mechanical equipment. Although efficient, conventional processes typically use several complex devices connected to a single functional unit, which are often expensive to maintain and occupy large areas. Therefore, the aim of this paper is to present the electrocoagulation (EC) method as an alternative to conventional water conditioning processes. The examples of previous studies of the EC process application is presented in this paper. The focus of the paper is to investigate the influence of the certain operational parameters such as pH, temperature, electrode material, etc., on the efficiency of pollutant removal such as Escherichia coli and elevated concentrations of iron, arsenic, manganese, ammonia and others. Further, an economic analysis is made, which, from an economic point of view, shows when it is feasible to use the EC in the conditioning process. Furthermore, a case study of electrocoagulation process for Total Nitrogen (TN) removal is presented. According to results, 69.7 % of TN was removed with aluminum electrodes after 240 minutes. For this case, total operating costs were 7.60 €/m3.

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The influence of operational parameters on elimination of cyanide from wastewater using the electrocoagulation process

Desalination ◽

10.1016/j.desal.2011.06.052 ◽

2011 ◽

Vol 280 (1-3) ◽

pp. 127-133 ◽

Cited By ~ 39

Author(s):

Gholamreza Moussavi ◽

Farzad Majidi ◽

Mahdi Farzadkia

Keyword(s):

Operational Parameters ◽

Electrocoagulation Process

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Application of Electrocoagulation for the Removal of Color from Institutional Wastewater: Analysis with Response Surface Methodology

Journal of Environmental Treatment Techniques ◽

10.47277/jett/9(2)479 ◽

2021 ◽

Vol 9 (2) ◽

pp. 470-479

Keyword(s):

Response Surface Methodology ◽

Reaction Time ◽

Response Surface ◽

The Other ◽

Quadratic Model ◽

Operational Parameters ◽

Electrode Combination ◽

Electrocoagulation Process ◽

Percentage Removal ◽

Central Composite

The removal percentage of color from institutional wastewater was studied using an electrocoagulation process with different electrode combination at the anode and cathode. This was done by considering operational parameters such as pH at (3, 6 and 9), current at (0.03A, 0.06A and 0.09A) and reaction time at (20, 40 and 60 minutes). When electrode combined in the form of Al-Al (anode-Cathode/Cathode-Anode) and Fe-Fe (anode-Cathode/Cathode-Anode) the percentage removal of color was up to 95.50% and 97.24% respectively. On the other hand around 98.03% and 91.95% of color was removed when Al-Fe (Anode-Cathode) and Fe-Al (Anode-Cathode) combined at pH 9 and 60 minutes of reaction time respectively. Central composite design from response surface methodology was used up to analysis the statistical and mathematical data based on experimental results such as the model was significant for all electrode combinations. Similarly a quadratic model was used for further study of operational effects on the removal (%) of color from institutional wastewater. The value of coefficient of the determination (R2) also indicated the model was a good fit as well as optimization was done by Response Surface Methodology.

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Influences of operational parameters on phosphorus removal in batch and continuous electrocoagulation process performance

Environmental Science and Pollution Research ◽

10.1007/s11356-017-0180-2 ◽

2017 ◽

Vol 24 (32) ◽

pp. 25441-25451 ◽

Cited By ~ 3

Author(s):

Dinh Duc Nguyen ◽

Yong Soo Yoon ◽

Xuan Thanh Bui ◽

Sung Su Kim ◽

Soon Woong Chang ◽

...

Keyword(s):

Phosphorus Removal ◽

Process Performance ◽

Operational Parameters ◽

Electrocoagulation Process

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Assessment of Effective Operational Parameters on Removal of Amoxicillin from Synthetic Wastewater Using Electrocoagulation Process

Journal of Pharmaceutical Research International ◽

10.9734/jpri/2019/v29i130227 ◽

2019 ◽

pp. 1-8

Author(s):

Davoud Balarak ◽

Kethineni Chandrika ◽

Marzieh Attaolahi

Keyword(s):

Cost Effective ◽

Synthetic Wastewater ◽

Simultaneous Increase ◽

Operational Parameters ◽

Effective Removal ◽

Electrocoagulation Process ◽

Synthetic Solution ◽

Water And Wastewater ◽

Aluminum Electrodes ◽

The Cost

In this study, efficiency of electrocoagulation (EC) process with aluminum electrodes for treatment of Amoxicillin (AMO) from synthetic solution has been studied and concluded. This experiment was conducted in a batch system with a volume of 1 L that had been equipped with four aluminum electrodes. The effect of operating parameters, such as voltage, time of reaction, initial AMO concentration, KCl concentration and pH on the AMO removal efficiency was investigated. In optimum condition (pH 7, voltage 60 V, electrolysis time 75 min, KCl concentration 3 g/L), electrocoagulation method was able to remove 98.8% of AMO antibiotics from synthetic solution. In addition, it is found that an increase in the applied voltage the speed of the treatment significantly. However, simultaneous increase of electrode and energy consumption was observed. The method was found to be highly efficient and relatively fast compared to conventional existing techniques and also, it can be concluded that the electrocoagulation process has the potential to be utilized for the cost-effective removal of AMO from water and wastewater.

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Decolorization of Reactive Red 195 solution by electrocoagulation process

Journal of Vietnamese Environment ◽

10.13141/jve.vol5.no1.pp22-26 ◽

2014 ◽

Vol 5 (1) ◽

pp. 22-26

Author(s):

Yuan-Shing Perng ◽

Ha Manh Bui

Keyword(s):

Electric Current ◽

Reactive Dye ◽

Sodium Sulphate ◽

Color Removal ◽

Iron Electrode ◽

Electrolysis Time ◽

Operational Parameters ◽

Sulphate Concentration ◽

Electrocoagulation Process ◽

Reactive Red 195

In this study, the application of bipolar electrocoagulation (EC) with iron electrode has been assessed for color removal of simulated wastewater containing Reactive Red 195. The influence of initial pH, sodium sulphate concentration, initial dye concentration, electrolysis time, and electric current were examined. The optimum operational parameters were found to be pH =11, concentration of dye = 50 mg L-1, sodium sulphate concentration = 1200 mg L-1, electrolysis time = 5 min, and electric current = 4 A. In such condition, color removal efficiency achieved over 99%. This result indicates that EC can be used as an efficient and “green” method for color removal from reactive dye solution. Trong nghiên cứu này, quá trình khử màu nhuộm hoạt tính (Reactive Red 195) được khảo sát bằng hệ thống keo tụ điện hóa điện cực kép, với vật liệu sắt. Các yếu tố ảnh hưởng đến quá trình khử màu như pH, nồng độ màu nhuộm, nồng độ muối Na2SO4, thời gian phản ứng và cường độ dòng được lựa chọn nghiên cứu. Kết quả cho thấy hệ thống điện hóa trên loại gần như hoàn toàn màu nhuộm với hiệu suất đạt trên 99 % tại pH 11, nồng độ màu 50 mgL-1 và nống độ muối Na2SO4 1200 mgL-1 trong khoảng thời gian 5phút. Kết quả trên cho thấy keo tụ điện hóa có thể xem là một phương pháp xử lý hiệu quả và “xanh” trong việc loại bỏ hoàn toàn màu từ nước thải nhuộm hoạt tính.

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The influence of operational parameters on reduce of azithromyin COD from wastewater using the peroxi -electrocoagulation process

Journal of Water Process Engineering ◽

10.1016/j.jwpe.2015.03.005 ◽

2015 ◽

Vol 6 ◽

pp. 51-57 ◽

Cited By ~ 14

Author(s):

Ahmad Reza Yazdanbakhsh ◽

Mohammad Reza Massoudinegad ◽

Sima Eliasi ◽

Amir Sheikh Mohammadi

Keyword(s):

Operational Parameters ◽

Electrocoagulation Process

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Fundamentals of the Biological Processes for Nitrogen Removal

Technologies for the Treatment and Recovery of Nutrients from Industrial Wastewater - Advances in Environmental Engineering and Green Technologies ◽

10.4018/978-1-5225-1037-6.ch005 ◽

2017 ◽

pp. 112-146 ◽

Cited By ~ 1

Author(s):

Francisco J. Cervantes ◽

Flor Cuervo-López ◽

Jorge Gómez Hernández

Keyword(s):

Wastewater Treatment ◽

Nitrogen Removal ◽

Biological Treatment ◽

Biological Processes ◽

Review Of The Literature ◽

Operational Parameters ◽

Comprehensive Review ◽

Treatment Processes

In this chapter the fundamental aspects involved in biological treatment processes applied for the removal of nitrogen from wastewaters are described. A comprehensive review of the literature is provided including kinetic, microbiological and biochemical aspects of nitrification, denitrification and anammox, as well as key operational parameters affecting the processes. This information is relevant for designing wastewater treatment processes applied for the removal of nitrogen from wastewaters. The information is also essential for predicting and controlling the performance of these treatment processes.

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