scholarly journals Electrocoagulation Treatment for Landfill Leachate using Stainless Steel Electrode

2019 ◽  
Vol 9 (1) ◽  
pp. 2851-2855
Keyword(s):  
Stainless Steel ◽  
Landfill Leachate ◽  
Applied Voltage ◽  
Metal Ion ◽  
Oxygen Demand ◽  
Stainless Steel Electrode ◽  
Electrolysis Time ◽  
Steel Electrode ◽  
Electrode Distance ◽  
Wide Range

Electrocoagulation (EC) process uses direct electric current source between metal electrode submerged in the effluent that results in electrode dissolution, with a suitable pH, metal ion can form a wide range of metal hydroxide and coagulated species that destabilized and dissolved contaminants absorbed. Electrocoagulation (EC) has been working for the percentage removal of BOD (Biochemical oxygen demand)/ chemical oxygen demand (COD) ratio, Color and COD on leachate in a batch Electrocoagulation reactor using stainless steel (SS) electrode. EC technology depends on so many factors such as electrode material, initial pH, applied voltage, inter-electrode distance, and electrolysis time. From the experimental work, results reveal that the maximum percentage of removal achieved were COD and Color 73.5% and 65.0% respectively and increasing BOD/COD ratio 0.11 to 0.62. The optimum inter-electrode distance 1cm with electrode surface area 35 cm2 and optimum electrolysis time of 120 min at optimum applied voltage 12V, stirring speed 250 rpm and pH 9.8. These results proved that the EC process is an appropriate and proficient approach for treating the landfill leachate.

scholarly journals Electrocoagulation Treatment for Removal of Color and Chemical Oxygen Demand in Landfill Leachate using Aluminum Electrode

2019 ◽  
Vol 8 (4) ◽  
pp. 89-92
Keyword(s):  
Chemical Oxygen Demand ◽  
Landfill Leachate ◽  
Applied Voltage ◽  
Research Work ◽  
Oxygen Demand ◽  
Experimental Result ◽  
Aluminum Electrode ◽  
Electrolysis Time ◽  
Leachate Treatment ◽  
Electrode Distance

The present research work mainly deals with the removal percentage of Color and Chemical Oxygen Demand (COD) on landfill leachate by using electrocoagulation (EC) process. An EC process was carried out with an aluminium electrode and it act as both anode and cathode. The study mainly targets the factors affecting on electrode material, electrolysis time, initial pH, applied voltage, inter-electrode distance. The experimental result reveals that there was raise in BOD/COD ratio from 0.11 to 0.66 and the maximum percentage removal achieved were COD and Color 78.4% and 77.0% respectively. The optimum inter-electrode distance 1cm with electrode surface area 35 cm2 and optimum electrolysis time of 90 min at optimum applied voltage 10V, stirring speed 250 rpm and pH is 9.3. These results showed that the EC process is appropriate and well-organized approach for the landfill leachate treatment.

Removal of Cadmium and Zinc Contaminations in Landfill Leachate by Using Electrocoagulation Process

2016 ◽  
Vol 857 ◽  
pp. 519-523 ◽  
Author(s):  
Mohamad Fared Murshed ◽  
Mohd Khairul Nizam Mahmad ◽  
M.A.Z. Mohd Remy Rozainy ◽  
Ismail Abustan ◽  
Norlia Baharun
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Stainless Steel ◽  
Electrolyte Solution ◽  
Landfill Leachate ◽  
Metal Removal ◽  
Stainless Steel Electrode ◽  
Steel Electrode ◽  
Initial Ph ◽  
Electrocoagulation Process

The research works involve the study of removal of cadmium and zinc contaminations in landfill leachate by electrocoagulation process. This project focused on leachate landfill from Pulau Burung, Nibong Tebal, Penang as an electrolyte solution. Heavy metals are the main factor contributing to pollution in leachate landfill. Types of electrodes used in this study were aluminium (grade 5052) and Stainless Steel (grade 316). The ranges of initial pH applied were pH (3, 4, 5, 6 and 7) and voltages applied were 1.5V, 2.0V and 2.5V. At the end of electrocoagulation process, the solutions were stored and analysed usingatomic absorption spectroscopy (AAS) to determine the final concentration of electrolyte solution. It was found difference electrodes have difference effectiveness in removing heavy metals, relies on the types of electrodes (aluminium or stainless steel) and also types of heavy metals that were being treated. The initial pH also gives the significant effect to removal of heavy metal and the maximum voltages give higher removal of heavy metal. Removal of cadmium and zinc by stainless steel electrode was more effective than aluminium electrodes at voltage of 2.5V. The removal using stainless steel was 22.45% and 97.54% respectively. For removal using aluminium electrodes 18.37% and 92.12% respectively. It was found that the maximum voltages give higher removal of heavy metal for all removal of cadmium and zinc. The removal maximum when the applied voltage was 2.5V and minimum at 1.5V.

Application of Taguchi Optimization on the Cassava Starch Wastewater Electrocoagulation Using a Bipolar Stainless Steel Electrode in the Presence Additive Electrolyte

2016 ◽  
Vol 851 ◽  
pp. 226-231 ◽  
Author(s):  
Sudibyo ◽  
Dian Burhani ◽  
Annisa Kusumaningrum ◽  
Wuri Apriyana ◽  
R. Priyo Hartono Aji ◽  
...  
Keyword(s):  
Stainless Steel ◽  
Electrical Resistance ◽  
Cassava Starch ◽  
Pollutant Removal ◽  
Stainless Steel Electrode ◽  
Taguchi Optimization ◽  
Steel Electrode ◽  
Electrode Distance ◽  
Starch Wastewater ◽  
Time Of Operation

Optimization of tapioca wastewater treatment by electrocoagulation has been conducted. Taguchi design experiment was used to calculate the optimum condition. Electrode distance, an electrical resistance of the wastewater and time of operation were used as the parameters. The results show that the electrocoagulation using bipolar stainless steel electrode was able to treat the cassava starch wastewater. The maximum pollutant removal percentage was achieved by the electrical resistance of 60 ohms at 1.5 cm electrode distance for 30 minutes.

Determination of Concentrated Hydrogen Peroxide Free from Oxygen Interference at Stainless Steel Electrode

2018 ◽  
Vol 90 (14) ◽  
pp. 8680-8685 ◽  
Author(s):  
Shimeles Addisu Kitte ◽  
Muhammad Nadeem Zafar ◽  
Yuriy T. Zholudov ◽  
Xiangui Ma ◽  
Anaclet Nsabimana ◽  
...  
Keyword(s):  
Hydrogen Peroxide ◽  
Stainless Steel ◽  
Stainless Steel Electrode ◽  
Steel Electrode

Raw landfill leachate treatment using an electrocoagulation process with a novel rotating electrode reactor

2019 ◽  
Vol 80 (3) ◽  
pp. 458-465 ◽  
Author(s):  
Ahmed Samir Naje ◽  
Mohammed A. Ajeel ◽  
Isam Mohamad Ali ◽  
Hussein A. M. Al-Zubaidi ◽  
Peter Adeniyi Alaba
Keyword(s):  
Landfill Leachate ◽  
Suspended Solids ◽  
Treatment Process ◽  
Oxygen Demand ◽  
Neutral Medium ◽  
Leachate Treatment ◽  
Rotating Speed ◽  
Electrode Distance ◽  
Treatment Performance ◽  
Electrocoagulation Process

Abstract In this work, landfill leachate treatment by electrocoagulation process with a novel rotating anode reactor was studied. The influence of rotating anode speed on the removal efficiency of chemical oxygen demand (COD), total dissolved solids (TDS), and total suspended solids (TSS) of raw landfill leachate was investigated. The influence of operating parameters like leachate pH, leachate temperature, current, and inter-distance between the cathode rings and anode impellers on the electrocoagulation performance were also investigated. The results revealed the optimum rotating speed is 150 rpm and increasing the rotating speed above this value led to reducing process performance. The leachate electrocoagulation treatment process favors the neutral medium and the treatment performance increases with increasing current intensity. Furthermore, the electrocoagulation treatment performance improves with increasing leachate temperature. However, the performance reduces with increasing inter-electrode distance.

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