Decolourization and removal of phenolic compounds from olive mill wastewater by electrocoagulation

Adhoum, Nafaâ; Monser, Lotfi

doi:10.1016/j.cep.2003.12.001

Cited by 391 publications

(232 citation statements)

References 29 publications

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“…Initial pH of wastewater is one of the most important process parameters in electrocoagulation (19,20). Since the pH of untreated wastewater can affect the stability of hydroxide types, this effect can also be seen on pollutant removal efficiency negatively or positively.…”

Section: Resultsmentioning

confidence: 99%

The Effect of Initial pH on Pistachio Processing Industrial Wastewater Pre-treatment by Electrocoagulation Method

Bayar¹,

Yılmaz²,

Köksal³

et al. 2015

Proceedings of the 2015 International Conference on Sustainable Energy and Environmental Engineering

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Abstract-In this study, removal of chemical oxygen demand (COD) and total phenols (TP) from pistachio processing industry wastewater was investigated using electrocoagulation method. COD and TP removal efficiencies were compared considering wastewater initial pH by using stainless steel cathodes and aluminum anodes. To determine the effect of initial pH on removal efficiency, 4, 5.2 (original wastewater pH), 6 and 7 pH were investigated. Results showed that optimum values of operating variables wastewater initial pH was 5.2 for COD removal efficiency and 7 for TF removal efficiency. Removal of COD of pH 5.2 up has increased. Removal of COD began to decrease at higher pH values than the original pH value. TF removal efficiency increased with increasing pH. The pH values at the obtained the highest energy consumption value was the original pH. The energy consumption value were decreased above and below the original pH value. The highest removal efficiencies for COD and TF were %60 and %95, respectively under operating conditions as 25 ml/min flow rate and 20 A current intensity.

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Section: Resultsmentioning

confidence: 99%

The Effect of Initial pH on Pistachio Processing Industrial Wastewater Pre-treatment by Electrocoagulation Method

Bayar¹,

Yılmaz²,

Köksal³

et al. 2015

Proceedings of the 2015 International Conference on Sustainable Energy and Environmental Engineering

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show abstract

“…There is only two studies which electrohydrolysis experiments were carried out in a Plexiglas bottle with aluminium electrodes for OMW. [18] were investigate the treatment of olive mill wastewater with electrohydrolysis with 0-10 V, using three aluminium electrodes as anodes and four as cathodes. The optimum condition, 76% of COD, 91% of polyphenol and 95% of dark colour removal efficiencies were reported.…”

Section: Resultsmentioning

confidence: 99%

Electrohydrolysis of Olive Mill Wastewater: Effect of Applied DC Voltage

2017

IJAAEE

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Abstract-The aim of this study is the investigation of electrohydrolysis treatment process for olive mill wastewater in terms of pollutants removal and hydrogen production. For this purpose, Different voltages including 4, 6 and 8 V DC were tested for 3 hours. 8 V DC for 3 hours was found to be as the most effective condition. At this optimum voltage, different time periods were also investigated. At 8 V, significant pollutant removal efficiencies were obtained. 68% turbidity, 70% TSS, 52% COD and 19% sCOD removal efficiencies were achieved. Volume of produced gas was 1500±10 ml and hydrogen percent was determined as 85%. Hydrogen production along with pollutant removal is one of the advantages of electrohydrolysis. Therefore, electrohydrolysis can be proposed as a feasible alternative treatment step for wastewaters which is characterized by high organic matter and also suspended matter.

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“…Essadki et al (2008) observed that the difference between maximum pH for COD and turbidity can be attributed to the formation of more stable flocs when pH is about 7, although it does not correspond to the optimum for dye removal. This behavior was attributed to the amphoteric character of aluminum hydroxide which does not precipitate at very low pH (Adhoum and Monser, 2004). The defluoridation by electrodes is a major contributor to overall removal efficiency in an EC system.…”

Section: Effect Of Phmentioning

confidence: 99%

Efficiency of aluminum and iron electrodes in removal of colour, turbidity and total suspended solid from biologically treated municipal wastewater

Sharma

Chopra

2015

JANS

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The present investigation was undertaken to observe the effect of different combinations of almunium and iron (Al-Al, Al-Fe, Fe-Fe and Fe-Al) electrodes on the removal of colour, turbidity (TD) and total suspended solids (TSS) of biologically treated municipal wastewater ( BTMW) using applied potential (V), operating time (OT) and initial pH. The maximum removal of colour (98.7 %) and TSS (96.89 %) was found with the use of Al-Al combination with optimum operating conditions (Voltage: 40 V; OT: 40 mins.; IED: 1.0 cm; EA: 160 cm 2 ; initial pH: 7.5 and ST: 30 mins). It was interesting to note that TD of BTMW was completely removed at these optimal operating conditions. The economic evaluation of electrode combinations was observed to be in the order of Fe-Al

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Decolourization and removal of phenolic compounds from olive mill wastewater by electrocoagulation

Cited by 391 publications

References 29 publications

The Effect of Initial pH on Pistachio Processing Industrial Wastewater Pre-treatment by Electrocoagulation Method

The Effect of Initial pH on Pistachio Processing Industrial Wastewater Pre-treatment by Electrocoagulation Method

Electrohydrolysis of Olive Mill Wastewater: Effect of Applied DC Voltage

Efficiency of aluminum and iron electrodes in removal of colour, turbidity and total suspended solid from biologically treated municipal wastewater

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