The Optimization of the Electrocoagulation of Palm Oil Mill Effluent with a Box-Behnken Design

Lubis, Mirna Rahmah; Fujianti, Dwinta; Zahara, Rita; Darmadi, Darmadi

doi:10.14716/ijtech.v10i1.838

Cited by 8 publications

(4 citation statements)

References 9 publications

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“…Alum and ferric chloride-based salts such as alum, aluminium chloride, ferric chloride, and ferric sulphate are frequently used as traditional coagulants (Bektas, 2004). Alum and ferric can have good coagulant properties (Lubis et al, 2019).…”

Section: Introductionmentioning

confidence: 99%

Impact of Temperature and Coagulants on Sludge Dewaterability

Fitria¹,

Scholz²,

Swift³

et al. 2022

IJTech

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Temperature and coagulant types have an important impact on the quantity and quality of the residue (sludge) in water and wastewater treatment processes. Temperature influences water viscosity and the distribution of the coagulant in water. Coagulants can promote the agglomeration of fine particles into larger flocs so that they can be more easily separated from the water. Experiments have been conducted to explore the relationship between temperature (16-26C), the type of coagulant, and sludge dewaterability (estimated using the capillary suction time (CST)). Alum, Ferric, and Moringa oleifera Lam were used as coagulants. The influences of different mixer shapes, turbidity values, and flocs sizes on sludge dewaterability have been assessed. The results show that ferric chloride was unaffected by temperature, whereas alum and M. oleifera performances were influenced by temperature. CST results using the coagulant ferric chloride, regardless of mixer shape, turbidity, and floc size, were insensitive to temperature differences.

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Section: Introductionmentioning

confidence: 99%

Impact of Temperature and Coagulants on Sludge Dewaterability

Fitria¹,

Scholz²,

Swift³

et al. 2022

IJTech

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“…A three-step treatment process of aerobic activated sludge biological pre-oxidation (ASBO), coagulation/sedimentation, and photo-oxidation through a photo-Fenton (PF) reaction has yielded BOD concentrations less than 150 mg/L at the effluent (Silva et al, 2017). Nurrohman and Wardjito (2016) reported satisfactory results from combining physical and chemical treatments to remove low biodegradable contaminants using a flotation and coagulation process, whereas Lubis et al (2019) removed more than 90% of COD in low biodegradable wastewater using electrocoagulation. Recently, there has been increased use of advanced oxidation processes (AOPs) to remove organic contaminants from wastewater.…”

Section: Introductionmentioning

confidence: 99%

Application of Cavitation Ozonation Process on Recalcitrant Organic Matter Degradation from Stabilized Landfill Leachate

Moersidik¹,

Annasari²,

Nugroho³

2021

IJTech

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Treatment of stabilized leachate as a by-product of municipal landfills has been a significant challenge as the leachate contains recalcitrant organic matter which has low biodegradability. In this study, the efficacy of the advanced oxidation process using cavitationozonation to remove recalcitrant organic matter in leachate samples from TPST Bantar Gebang was evaluated. Several operational and process parameters including pH, ozone flowrate, and contact time were varied to determine the best conditions for removing recalcitrant organic matter represented by Chemical Oxygen Demand (COD). This study determined the optimum operating conditions for the cavitation-ozonation process: pH 11, ozone discharge of 3 L/min, and contact time of 30 minutes. The result was a COD removal efficiency of 20.37%, an increase of 52.06% in the concentration of BOD5, and a 90% increase in the ratio of BOD5 to COD. This study has shown that cavitation-ozonation is an effective pre-treatment, as it increases the biodegradability of stabilized leachate and reduces the load on subsequent treatment processes.

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“…Factors that influence EC efficiency include electrolysis time, current density, electrode type, interelectrode spacing, and the pH of the electrolyte [9]. Response surface optimization is a widely used method to investigate optimal process variables of EC when aiming to obtain maximum treatment efficiency [10].…”

Section: Introductionmentioning

confidence: 99%

Response Surface Optimization of Electrocoagulation to Treat Real Indigo Dye Wastewater

Prayochmee¹,

Weerayutsil²,

Khuanmar³

2021

Pol. J. Environ. Stud.

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This research aimed to optimization of the electrocoagulation process was investigated in terms of chemical and physical mechanisms using Box-Behnken response surface design (BBD). The experimental conditions were optimized by examining the interaction effects of initial pH, electrolysis time, and current density on COD and color removal efficiencies. The results showed that the calculated response functions agreed well with the experimental data, where R 2 = 94.87% for COD and 97.86% for color. An ANOVA analysis revealed p-values lower than 0.05 at the 95% confidence interval (CI) (p = 0.05), confirming that the quadratic models were statistically significant and supportive of the phenomenon study on COD and color removal. According to BBD results, for the maximum removal of COD and color, the optimal independent variables were a pH of 4.0, electrolysis time of 60 min, and current density of 300 A/m 2 . Predicted removal efficiencies of COD and color under optimal operating conditions were 71.96% and 96.38%, respectively. Three experiments conducted to confirm optimal operating conditions revealed mean values of COD and color removal efficiency to be 73.13% and 94.68%, respectively. These findings confirmed that predictions of optimal operating conditions generated by the response surface design model were reliable.

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The Optimization of the Electrocoagulation of Palm Oil Mill Effluent with a Box-Behnken Design

Cited by 8 publications

References 9 publications

Impact of Temperature and Coagulants on Sludge Dewaterability

Impact of Temperature and Coagulants on Sludge Dewaterability

Application of Cavitation Ozonation Process on Recalcitrant Organic Matter Degradation from Stabilized Landfill Leachate

Response Surface Optimization of Electrocoagulation to Treat Real Indigo Dye Wastewater

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