Removal of lead by solar-photovoltaic electrocoagulation using novel perforated zinc electrode

Hussin, Farihahusnah; Abnisa, Faisal; Issabayeva, Gulnaziya; Aroua, Mohamed Kheireddine

doi:10.1016/j.jclepro.2017.01.096

Cited by 76 publications

(24 citation statements)

References 35 publications

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“…EC has been successfully used for the removal of oil and grease from biodiesel wastewater, with a removal efficiency as high as 98.42% . Similar successful results were obtained from treatment of antibiotics, textile wastewater phosphate from surface water, lead, landfill leachate, phenolic compounds, and heavy metals …”

Section: Introductionsupporting

confidence: 52%

“…[25][26][27] EC has been successfully used for the removal of oil and grease from biodiesel wastewater, with a removal efficiency as high as 98.42%. [28] Similar successful results were obtained from treatment of antibiotics, [19] textile wastewater [29] phosphate from surface water, [30] lead, [31] landfill leachate, [32] phenolic compounds, [21] and heavy metals. [33,34] Although, there are some studies regarding the removal of boron by electrocoagulation process, [10,[35][36][37] its lack of full scale optimization on boron removal in low concentration by electrocoagulation process, especially electrode optimization which causes that makes difference on results and also lack of operating cost calculation.…”

Section: Introductionmentioning

confidence: 59%

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Operating Cost and Treatment of Boron from Aqueous Solutions by Electrocoagulation in Low Concentration

Deniz

Akarsu

2018

Global Challenges

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The objective of this study is to determine the optimum parameters of electrocoagulation process in treatment of boron in low concentrations. Especially, studies on electrode optimization in low boron concentrated waters are insufficient. Therefore, the effect of electrode combination (Al–Al, Al–Fe, Al–SS, Fe–Al, Fe–Fe, and Fe–SS), pH (5–9), current density (8–24 mA cm −2 ), distance (1–3 cm), and electrolysis time (10–90 min) on treatment of boron containing wastewater is studied to obtain maximum removal efficiency. The maximum removal efficiency of boron is obtained as 95.6%. Operation conditions for maximum removal are the electrode combination of Fe–Al, current density of 16 mA cm −2 , pH 7.0, concentration of 30 mg L −1 and the reaction time of 70 min. Operating cost of the electrocoagulation process is calculated as 2.35 $ m −3 . This study indicates that the electrocoagulation process can be successfully applied in order to treat boron‐polluted wastewaters at low initial concentrations.

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Section: Introductionsupporting

confidence: 52%

Section: Introductionmentioning

confidence: 59%

Operating Cost and Treatment of Boron from Aqueous Solutions by Electrocoagulation in Low Concentration

Deniz

Akarsu

2018

Global Challenges

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“…In addition, the reducing agent zinc oxidized and donated the electrons to the oxidizing agents. The reaction of zinc is shown below (1); [16] Zn → Zn 2+ + 2e -…”

Section: Resultsmentioning

confidence: 99%

The Treatment of Landfill Leachate by Electrocoagulation to Reduce Heavy Metals and Ammonia-Nitrogen

Kasmuri

Tarmizi

2018

IJET

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Landfill leachate contains high concentration of contaminants in the form of nitrogen, suspended solids and heavy metals, which effects the environment adversely. Hence leachate treatment is considered vital in landfill management as the effluent needs to undergo several treatments before being discharged into natural water bodies. Without treatment, the leachate will contaminate the surface and ground water as it can penetrate through soils and subsoils. Several methods have been applied for the treatment of landfill leachate. However, these methods have several constraints due to area required and cost incurred. This paper presents the application of electrocoagulation in removing pollutants from landfill leachate; particularly ammonia-nitrogen and heavy metals. Three metals namely aluminium, iron and zinc were used as electrodes. Aluminium electrode was found to be the most effective where it was capable to extract 89% of zinc and 75% of iron in 30-minute retention time. Subsequently, 93% of zinc and 83% of iron was removed in 120 minutes. In addition, 93% of ammonia-nitrogen was also removed. These results led to a conclusion that the electrocoagulation had the capacity to remove heavy metals and ammonia-nitrogen present in landfill leachate.

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“…In other words, by the increase of dye concentration, the removal percentage of dye was significantly reduced (17). Hussin et al (2017) examined the lead removal efficiency at a concentration range of 5-30 mg/l In a research conducted by on lead removal by photovoltaic electrocoagulation using a perforated lead electrode. The results showed that the increase of the lead concentration led to the decrease of the removal efficiency The reason is that the increase in lead concentration caused an increase in concentration polarity through adsorption on the anode and cathode and led to reduced anode dissolution and gas production in the cathode (18).…”

Section: Discussionmentioning

confidence: 99%

Decolorization of reactive blue 19 from aqueous solutions by electrocoagulation process

Arghavan

Nabavian

Entezari

et al. 2018

JHST

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Background: Industrial wastewater contains several harmful chemicals, such as textile dyes, that are toxic to human and biological life. Accordingly, the wastewater from textile industry must be treated to minimize hazardous effects, including carcinogenic, mutagenic, teratogenic, coloring agent prior to disposal. The aim of the present study was to investigate the effect of electrocoagulation (EC) process for reactive blue 19 dye removal from aqueous solutions. Materials and Methods: In the current experimental study the electrocoagulation process was employed to remove reactive blue dye from aqueous solution using laboratory scale batch reactor. The electrodes were positioned vertically and parallel to each other. Two iron and two aluminum electrodes were used as anode and cathode, respectively. Different operating parameters, including current density (0.2, 0.5, 1.3, 2.6, 5.2 mA/cm 2 ), initial pH (3,5,7,9,11), initial dye concentration (10, 20, 30, 50, 100, 200 mg/l), and reaction time (10, 20, 30, 60 min), were tested with the synthetic wastewater in order to determine the optimal parameters. Results: The best-operating conditions were achieved at the current density of 0.5 mA/cm 2 , initial pH of 3, and the dye concentration of 30 mg/l. The optimum parameters at the batch-stirred EC system led to 92.26 % and 98.93% of decolorization after 20 and 60 min of operation, respectively. Conclusions: The results clearly showed that EC was an effective and operational process for reactive blue 19 removals.

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Removal of lead by solar-photovoltaic electrocoagulation using novel perforated zinc electrode

Cited by 76 publications

References 35 publications

Operating Cost and Treatment of Boron from Aqueous Solutions by Electrocoagulation in Low Concentration

Operating Cost and Treatment of Boron from Aqueous Solutions by Electrocoagulation in Low Concentration

The Treatment of Landfill Leachate by Electrocoagulation to Reduce Heavy Metals and Ammonia-Nitrogen

Decolorization of reactive blue 19 from aqueous solutions by electrocoagulation process

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