scholarly journals Decolorization of Reactive Red 195 solution by electrocoagulation process

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.

The Use of Electrocoagulation Technique for Paper Mill Wastewater Treatment

2017 ◽  
Vol 901 ◽  
pp. 149-153 ◽  
Author(s):  
Galuh Yuliani ◽  
Kinia Mitasari ◽  
Agus Setiabudi
Keyword(s):  
Wastewater Treatment ◽  
Applied Voltage ◽  
Paper Industry ◽  
Paper Mill ◽  
Iron Electrode ◽  
Aluminum Electrode ◽  
Electrolysis Time ◽  
Operational Parameters ◽  
Electrode Distance ◽  
Metal Plates

Electrocoagulation technique has been widely used in wastewater treatment because it is considered as safe, efficient and environmentally friendly. In this research, electrocoagulation cell was constructed using aluminum and iron electrodes. These metal plates were cut into three parts and were arranged in parallel modes. The constructed electrocoagulation cells were then utilized for the treatment of wastewater obtained from local paper industry. Some operational parameters namely electrolysis time, pH, applied voltage, and electrode distance were analyzed. It was found that the optimum conditions were electrolysis time of 60 minute, pH of 7, applied voltage of 14 V and electrode distance of 1.5 cm. For iron electrode, percentage removals of conductivity, turbidity, COD and BOD were 62%, 97%, 37% and 30%, respectively. For aluminum electrode, the percentage removals of conductivity, turbidity, COD and BOD were 42%, 98%, 37% and 50%, respectively.

Decolorization of Reactive Dye Wastewater by Electrocoagulation

2012 ◽  
Vol 550-553 ◽  
pp. 2308-2311
Author(s):  
Xu Huang ◽  
Wei Dong Zhang
Keyword(s):  
Operating Cost ◽  
Reactive Dye ◽  
Iron Electrode ◽  
Brilliant Blue ◽  
Electrochemical Technique ◽  
Dye Wastewater ◽  
Electrolysis Time ◽  
Remazol Brilliant Blue R ◽  
Operation Conditions ◽  
Decolorization Efficiency

Electrocoagulation is an electrochemical technique for treating polluted effluent, such as dye wastewater. In this paper, Remazol Brilliant Blue R was decolorized by electrocoagulation method used iron electrode. The operating cost was also considered to confirm the optimum operation conditions. High decolorization efficiency (>99%) for Remazol Brilliant Blue R dye solution was obtained with 15mA cm-2 of current density, 10min of electrolysis time, pH 6 and 500mg l-1 dye concentration.

scholarly journals TREATMENT OF SERVICE STATION WASTEWATER USING ELECTROCOAGULATION PROCESS

2017 ◽  
Vol 5 (7) ◽  
pp. 348-353
Author(s):  
Krishna M. K ◽  
Manjunath H.N ◽  
Ayesha Siddiqa
Keyword(s):  
Stainless Steel ◽  
Removal Efficiency ◽  
Iron Electrode ◽  
Electrode Spacing ◽  
Electrolysis Time ◽  
Constant Voltage ◽  
Oil And Grease ◽  
Initial Ph ◽  
Electrocoagulation Process ◽  
Electro Coagulation

The various electrodes such as iron, aluminium, stainless steel and graphite are used in this study. Main objectives of the present paper is to evaluate the removal of COD, pH, TDS and oil and grease from the automobile wastewater by Electro coagulation using iron as Monopolar configuration at different voltages and electrolysis time. To study the effect of inter electrode spacing and effect of different initial pH for the removal of selected parameter at constant voltage for the iron electrode. The removal efficiency decreases with increase in electrode spacing as 71.2% of COD, 96.5% of TDS and 88.76% of oil and grease removal was achieved with iron electrode.

scholarly journals Efficient Removal of Coralene Red 3g Dye in Ec Process with Zn/Tio2 using Statistical Algorithm

2019 ◽  
Vol 9 (1S3) ◽  
pp. 225-229
Keyword(s):  
Thermal Decomposition ◽  
Spray Pyrolysis ◽  
Statistical Approach ◽  
Color Removal ◽  
Operational Parameters ◽  
Efficient Removal ◽  
Applied Current ◽  
Electrocoagulation Process ◽  
Spss Software ◽  
Level Of Significance

This work describes the statistical approach for the efficiency of electrodes Zn/TiO2, prepared by spray pyrolysis and thermal decomposition of TiCl3, in treating Coralene Red 3G dye for its color removal in electrocoagulation process with the optimization of operational parameters. Using Design Experts software, ANOVA design model was carried out and the efficiency of color removal for the parameters such as pH, concentration of dye, electrolyte, applied current and time were derived. Replicates were maintained for all experiments, and the results were statistically analyzed by performing ANOVA at 5% level of significance using SPSS software. A better efficiency was observed for the electrodes Zn/TiO2 obtained from spray pyrolysis

scholarly journals Modeling the removal of Sunfix Red S3B from aqueous solution by electrocoagulation process using artificial neural network

2016 ◽  
Vol 81 (8) ◽  
pp. 959-970 ◽  
Author(s):  
Ha Manh
Keyword(s):  
Aqueous Solution ◽  
Removal Efficiency ◽  
Current Density ◽  
Dye Removal ◽  
Percentage Error ◽  
Electrolysis Time ◽  
Connection Weight ◽  
Sulphate Concentration ◽  
Electrocoagulation Process ◽  
Artificial Neural

This study presents an application of artificial neural networks (ANNs) to predict the dye removal efficiency (color and chemical oxygen demand value) of Electrocoagulation process from Sunfix Red S3B aqueous solution. The Bayesian regulation algorithm was applied to train the networks with experimental data including five factors: pH, current density, sulphate concentration, initial dye concentration (IDC), and electrolysis time. The predicting performance of the ANN models was validated through the low root mean square error value (9.844 %), mean absolute percentage error (13.776 %) and the high determination coefficient value (0.836). Garson, Connection weight method and neural interpretation diagram were also used to study the influence of input variables on dye removal efficiency. For decolorization, the most effective inputs are determined as current density, electrolysis time and initial pH, while COD removal is found to be strongly affected by initial dye concentration and sulphate concentration. Through these steps, we demonstrated ANN?s robustness in modeling and analysis of electrocoagulation process.

scholarly journals Factors Influencing the Formation of Sodium Hydroxide by an Ion Exchange Membrane Cell

Batteries ◽  
2021 ◽  
Vol 7 (2) ◽  
pp. 34
Author(s):  
Jimmy Aurelio Rosales-Huamani ◽  
Juan Taumaturgo Medina-Collana ◽  
Zoila Margarita Diaz-Cordova ◽  
Jorge Alberto Montaño-Pisfil
Keyword(s):  
Ion Exchange ◽  
Sodium Hydroxide ◽  
Linear Trend ◽  
Electrolytic Cell ◽  
Electrolysis Time ◽  
Operational Parameters ◽  
Graphite Electrodes ◽  
Exchange Membrane ◽  
Membrane Cell ◽  
Production Cell

The present study aimed to evaluate the factors that influence the formation of sodium hydroxide (NaOH) by means of an electrolytic cell with ion exchange membranes. To achieve this experiment, the NaOH production cell had to be designed and built inexpensively, using graphite electrodes. The operational parameters in our study were: initial NaOH concentration, applied voltage, and temperature. All experiments were carried out using model NaCl solutions with a concentration of 40 g/L for 150 min. The results of the experiment were that the NaOH concentration, conductivity, and pH presented an increasing linear trend with the electrolysis time. Finally, it was possible to obtain the efficiency level of the electric current in our investigation, which was an average of 80.2%, that indicated good performance of the built cell.

Effects of operational parameters on defluoridation efficiency using electrocoagulation process

2011 ◽  
Vol 6 (1) ◽  
Author(s):  
M. Behbahani ◽  
M.R. Alavi Moghaddam ◽  
M. Arami
Keyword(s):  
Reaction Time ◽  
Anode Material ◽  
Removal Efficiency ◽  
Fluoride Concentration ◽  
Fluoride Removal ◽  
Operational Parameters ◽  
Applied Current ◽  
Initial Ph ◽  
Electrocoagulation Process ◽  
Electrode Connection

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.

Synthesis and Application of Zn‑BTC/GO Nanocomposites as Highly Efficient Photocatalysts in the Dye Degradation

2021 ◽  
Vol 11 (1) ◽  
pp. 67-73
Author(s):  
Manh Nguyen Ba ◽  
Trang Pham Thi Thu ◽  
Hoa Tran Thi ◽  
Giang Le Ha
Keyword(s):  
Removal Efficiency ◽  
Dye Degradation ◽  
High Surface ◽  
High Surface Area ◽  
Reactive Dye ◽  
High Photocatalytic Activity ◽  
Microwave Method ◽  
Sem Image ◽  
High Initial Concentration ◽  
Reactive Red 195

Nanocomposite Zn-BTC/GO (BTC: benzene-1,3,5-tricarboxylic, GO: graphene oxide) was successfully synthesized by hydrothermal treatment with a microwave method. Samples were characterized by XRD, FTIR, EDS-mapping, BET, SEM, UV-vis DRS and XPS. SEM-image result showed nano Zn-BTC/GO particles size of 50-80 nm. Nanocomposite Zn-BTC/GO showed the a high surface area (1303 m2/g) and pore volume (1.08 cm3/g). The Zn-BTC/GO nanocomposite were tested for the photocatalytic degradation of reactive dye (Reactive Red 195) in an aqueous solution. The Zn-BTC/GO composites exhibited high photocatalytic activity. Thus, at the pH of 6.5 and the high initial concentration of 30 mg RR-195/L, removal efficiency reached the value of 96.16% after 60 min reaction. Moreover, nano Zn-BTC also showed high RR-195 removal efficiency after 3 catalytic regeneration. This contributes to sustainable development and green chemistry.

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