Removal of organics from bilge water by batch electrocoagulation process

Aswathy, P.; Gandhimathi, R.; Ramesh, S.; Nidheesh, P.V.

doi:10.1016/j.seppur.2016.01.001

Cited by 127 publications

(35 citation statements)

References 35 publications

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“…Under optimal conditions, color could be completely removed, while 85% of COD and 78.5% of lignin could be also mitigated. The effective removals of COD were also demonstrated in other waters, e.g., bilge water (Aswathy et al, 2016) and tannery wastewater (Elabbas et al, 2016).…”

Section: Coagulation/flocculationmentioning

confidence: 71%

Physico‐Chemical Processes

Bai¹,

Xiong²,

Kadhom³

et al. 2017

Water Environment Research

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Section: Coagulation/flocculationmentioning

confidence: 71%

Physico‐Chemical Processes

Bai¹,

Xiong²,

Kadhom³

et al. 2017

Water Environment Research

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“…While lower performance for Al electrode at low pH values, Al species will be in the form of Al 3+ and Al(OH) 2+ . Therefore, effective electrocoagulation did not happen in liquids with low pH [3,12,13]. In contrast, the best performance for Cu electrode was at Alkaline media (pH = 10).…”

Section: Effect Of Initial Ph Of the Solution On Cod Removalmentioning

confidence: 97%

“…EC involves many chemical and physical phenomena that use consumable metal electrodes to supply ions into the water stream. Electrodes are classified into cathode and anode based on the type of reaction occurred on its surface where, reduction occurs at the cathode, while oxidation occurs at the anode [3]. The amount of electricity that passes through the cell governed the amount of substance that undergoes oxidation or reduction at each electrode [4].…”

Section: Introductionmentioning

confidence: 99%

Wastewater Treatment by Electrocoagulation: A comparative study using different anode materials

Zaher¹,

Elawwad²,

Nadeem³

2019

World Congress on Civil, Structural, and Environmental Engineering

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This study investigated COD removal by electrocoagulation in both synthetic and real wastewater using different anode material. Experiments were conducted in a batch-scale EC cell using aluminium, iron and copper electrodes as anode and stainless-steel electrode as cathode. Effects of different parameters including pH (4, 7, and 10), time (10 to 60 min), voltage (3 to 12 V) were studied in order to evaluate the efficiency of electrocoagulation process. The initial synthetic COD concentration was 1000 mg/l. The highest COD removal efficiency of 97.7% was observed by aluminium electrode under the following conditions: pH = 7, time of 60 min, and voltage of 12 V. Moreover, it was observed that most of COD removal happened during the first 10 min (about 86%) then the removal rate decreased. For real wastewater, the highest COD removal efficiency was 91.9% which achieved by using aluminium electrode, pH =7.4, time of 60min, and voltage of 12 V. The results showed the feasibility of electrocoagulation process for the treatment of highstrength municipal wastewaters. ICEPTP 152-4 Effect of voltage on COD removalAs shown in figures 2, 3, and 4, the voltage and current have a main important role in increasing the removal efficiency at the same pH. By using Al electrode as anode with constant pH = 7, time 60 min, COD removal efficiencies were 92.4, 94.6, 95.9, and 97.7% at voltages of 3, 6, 9, and 12V, respectively. By using Fe electrode as anode under the same operating conditions, COD removal efficiencies were 91.1, 93.5, 95, and 96.8 respectively finally by using Cu electrode as anode the removal efficiency of COD was 90.3%, 92.9%, 94%, and 96% at voltages of 3, 6, 9, and 12V, respectively. The current induced at 3, 6, 9 and 12V were observed as 0.1, 0.3, 0.6 and 0.9 A, respectively.Current density determines both coagulant dosage and bubble generation rates and influences both solutions mixing and mass transfer at the electrodes [14]. COD removal efficiency increased with increase in voltage due to the increase in metal ions dissolute from anode. According to Faraday's law, as metal hydroxide increases, it adsorbs more COD. Also, it is well known that voltage and current density determines the production rate of coagulant, adjusts also bubble production, and hence affects the growth of flocs [5].

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“…Prediksi penurunan thorium dengan proses elektrokoagulasi mengikuti orde dua mempunyai kecenderungan yang sama dengan hasil penelitian sebelumnya. Kebanyakan penelitian yang menggunakan proses elektrokoagulasi mengikuti orde dua [25], diantaranya studi kinetika pemindahan stronsium dan cesium dalam limbah cair merupakan reaksi orde dua [7], mempelajari kinetika pemindahan total organik karbon pada limbah litografi merupakan reaksi orde dua [8], dan pemindahan partikel pada pengolahan limbah polishing mekanik kimia (CMP) dengan elektrokoagulasi [26]. Gambar …”

Section: Kinetika Dengan Cara Integralunclassified

Model Matematik Reduksi Thorium dalam Proses Elektrokoagulasi

Prayitno

Ridantami

2017

EKSPLORIUM

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ABSTRAKReduksi thorium dengan elektrokoagulasi telah dilakukan pada limbah radioaktif yang memiliki kadar kontaminan thorium 5x10 -4 kg/l dengan sistem batch menggunakan elektrode-elektrode aluminium. Penelitian ini bertujuan untuk mengetahui model matematik reduksi thorium melalui kecepatan reaksi, konstanta laju reaksi, dan orde reaksi yang dipengaruhi oleh parameter proses elektrokoagulasi seperti tegangan, waktu, jarak elektrode, dan pH. Penelitian menghasilkan kondisi optimum tegangan 12,5V, jarak 1 cm, pH 7, dan waktu proses 30 menit dengan efisiensi sebesar 99,6%. Prediksi nilai konstanta laju penurunan thorium didapatkan melalui perhitungan matematika dengan metode integral. Hasil penelitian menunjukkan laju penurunan thorium mengikuti konstanta orde dua dengan nilai konstanta laju penurunan thorium 5x10 -3 KgL -1 min -1 .

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Removal of organics from bilge water by batch electrocoagulation process

Cited by 127 publications

References 35 publications

Physico‐Chemical Processes

Physico‐Chemical Processes

Wastewater Treatment by Electrocoagulation: A comparative study using different anode materials

Model Matematik Reduksi Thorium dalam Proses Elektrokoagulasi

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