Removal of phosphate from surface and wastewater via electrocoagulation

Franco, Daniel; Lee, Jabari; Arbelaez, Sebastian; Cohen, Nozha; Kim, Jong-Yeop

doi:10.1016/j.ecoleng.2017.07.031

Cited by 48 publications

(12 citation statements)

References 18 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%

“…To determine optimum initial concentration, different initial concentration of boron (10,20,30,40, and 50 mg L −1 ) was studied. Other experimental conditions were Fe-Al electrode pair, pH 7, 20 mm electrode distance and 16 mA cm −2 current density.…”

Section: Methodsmentioning

confidence: 99%

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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%

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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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“…Hem toksik alg patlaması hem de hipoksik bölgeler sucul canlılara zarar vermekte ve balık ölümlerine yol açabilmektedir. Su kütlelerinin ötrofikasyonu ayrıca bitki ve hayvan türleri kompozisyonunda değişime, biyolojik çeşitliliğin kaybına ve besin ağlarının bozulmasına da yol açabilmektedir [7]. Suların farklı amaçlar için kullanımında ciddi bir problem olmaktadır [3].…”

Section: Igi̇ri̇şunclassified

Aktif Karbon Destekli Nano Boyutlu Sıfır Değerlikli Demir ile Sulu Ortamlardan Fosfat Giderimi: Cevap Yüzey Yöntemi ile İşletme Parametrelerinin Optimizasyonu

Tunç

2019

Bilecik Şeyh Edebali Üniversitesi Fen Bilimleri Dergisi

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z-Bu çalışmada, sulu faz borhidrür indirgeme metodu ile aktif karbon destekli nano boyutlu sıfır değerikli demir (AC-nZVI) partikülleri sentezlenmiş ve sentezlenen AC-nZVI partikülleri sulu ortamlardan fosfat gideriminde kullanılmıştır. Fosfat giderim verimi üzerinde çözelti pH'ı, AC-nZVI miktarı, başlangıç fosfat konsantrasyonu ve temas süresi işletme parametrelerinin etkilerini ve optimum şartları belirlemek için cevap yüzey metodu (CYM) uygulanmıştır. Deneysel dizaynda ve sonuçların analizinde merkezi kompozit dizaynı (MKD) kullanılmıştır. Varyans analizi (ANOVA) sonuçlarına göre, ikinci dereceden polinominal model istatistiksel olarak anlamlı (P=0.0002) ve determinasyon katsayısı (R 2 ) 0.8735 olarak bulunmuştur. AC-nZVI ile maksimum fosfat giderimi için optimum şartlar pH 3.09, AC-nZVI miktarı 0.59 g/L, fosfat konsantrasyonu 30.69 mg P/L ve temas süresi 66.58 dakika olarak belirlenmiştir. Bu çalışmanın sonuçları, atıksulardan fosfat gideriminde AC-nZVI'nın etkili bir adsorbent olarak kullanılabileceğini göstermiştir. Anahtar Kelimeler-Adsorpsiyon, Fosfat, AC-Nzvı, Optimizasyon, Cevap Yüzey Yöntemi.bstract-In this study, activated carbon-supported nano-scale zero-valent iron particles were synthesized by the aqueous phase borohydride reduction method and the synthesized AC-nZVI particles were used for the phosphate removal from aqueous solutions. The effects of the operating parameters that included pH, AC-nZVI amount, initial phosphate concentration and contact time on the phosphate removal were investigated using response surface methodology. The central composite design was employed for the experimental design and analysis of the results. According to results of variance analysis (ANOVA), the second order polynomial model was statistically significant (P=0.0002) and determination coefficient (R 2 ) was 0.8735. The optimum conditions for phosphate removal by AC-nZVI were determined as pH of 3.09, AC-nZVI amount of 0.59 g/L, initial phosphate concentration of 30.69 mg P/L and contact time of 66.58 minutes. The results of this study demonstrated that AC-nZVI could be used as an effective adsorbent for phosphate removal from wastewater.

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“…EC is composed of a current generator and electrodes that are in general made from aluminium (Al), stainless steel (SS) and iron (Fe) [1,2]. Electrocoagulation treatment is effective for many types of wastewater [3] such as wastewater contaminated by oil [4], acid dyes [5], pharmaceutical products [6], pulp and paper manufacturing [7], phosphate-contaminated surface water [8]. The principle of EC is oxidation reaction at Anode and reduction at Cathode [9] which can be represented in Equations (1)(2)(3)(4):…”

Section: Introductionmentioning

confidence: 99%

Using Waste from Food Cans as Electrode in Electrocoagulation for Wastewater Treatment

Soonsorn¹,

Khuanmar²,

Padungthon³

et al. 2018

IJET

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Wastes from soda and milk cans which contain metals can be used as electrode in Electrocoagulation (EC) technique. The study used wastewater from dyeing and finishing process of textile factory. Both the electrodes made from soda cans and milk cans were compared to the conventional electrodes made from aluminium sheet. Characterization of aluminium (Al) element in electrode showed 67.28% in aluminium sheets, 4.99% in soda cans, and 0% in milk cans. Nevertheless, only milk cans contain iron (Fe) and tin (Sn) at 45.87% and 23.87%, respectively. Based on treatment efficiency in COD removal from the real wastewater, it turned out that the highest efficiency was from aluminium sheets, at 83.57%, whereas soda-can electrodes and milk-can electrodes were 80.71% and 71.14%, respectively. This could result from the fact that soda-can electrodes contain high percentage of aluminium while milk-can electrodes have no aluminium, leading to its low efficiency. Although Fe in milk can function as electrodes, the efficiency cannot be compared to electrodes made from soda cans. Therefore, soda cans make an efficient material for electrodes because of its high percentage of aluminium. Analysis of SEM images demonstrated compactly agglomerated sludge from aluminium electrodes and soda-can electrodes. The image from testing milk can material demonstrated in contrast loosely agglomerated sludge. It can be concluded that the use of electrodes containing aluminium produces relatively more effective sedimentation.

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Removal of phosphate from surface and wastewater via electrocoagulation

Cited by 48 publications

References 18 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

Aktif Karbon Destekli Nano Boyutlu Sıfır Değerlikli Demir ile Sulu Ortamlardan Fosfat Giderimi: Cevap Yüzey Yöntemi ile İşletme Parametrelerinin Optimizasyonu

Using Waste from Food Cans as Electrode in Electrocoagulation for Wastewater Treatment

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