High performance electrocoagulation process in treating palm oil mill effluent using high current intensity application

Nasrullah, Mohd; Zularisam, A. W.; Krishnan, Santhana; Sakinah, Mimi; Singh, Lakhveer; Fen, Yap Wing

doi:10.1016/j.cjche.2018.07.021

Cited by 73 publications

(32 citation statements)

References 45 publications

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“…The effects of the initial pH on the treatment performance of the electro-coagulation is pollutant-dependent process. Some pollutants found to be more effectively removed at higher pH [13] while others reported maximum removal at acidic pH [16,19]. It is reported that performance of sewage treatment improves by increasing the initial pH from 3 to 7.8 [13].…”

Section: Effect Of Phmentioning

confidence: 99%

“…On the other hand, maximum removal of Remazol Black B color was reported to happen at pH 2 and pH 4 with percentage removal of 99% and 91%, respectively [19]. Also, reported results of electrocoagulation of palm oil mill effluent [16] showed better treatment performance at slightly acidic pH rather than neutral or alkaline pH while Zazouli and his colleagues achieved better treatment performance for the electrochemical coagulation of pulp and paper recycled wastewater at neutral pH (7) comparing to acidic (5) and alkaline (9) pH [18]. Also, You and Han [9] reported faster and higehr arsenic removal rate from arseniccontaminated ground water at neutral (7) pH.…”

Section: Effect Of Phmentioning

confidence: 99%

“…Nawarkar and Salkar [14] reported a current density of 40 A/m 2 and reaction time of 20 min as optimal operating conditions for sewage treatment using electro-coagulation with estimated percentages removal of 92% and 94% for COD and turbidity, respectively while others concluded that initial pH of 7.8, 100 A/m 2 , and 10 minutes reaction time are optimal conditions for COD (72%), turbidity (98%) and Phosphorus (98%) removal from domestic wastewater [13]. The electro-coagulation has been investigated for removal of organic matter from high strength industrial wastewaters [15][16][17]. Nasrullah and his colleagues [16] studied treatment of palm oil mill effluent using stainless steel electrodes and achieved 95%, 94% and 96% for the removal of COD, Biochemical Oxygen Demand (BOD) and Total Suspended Solids (TSS), respectively.…”

Section: Introductionmentioning

confidence: 99%

“…The electro-coagulation has been investigated for removal of organic matter from high strength industrial wastewaters [15][16][17]. Nasrullah and his colleagues [16] studied treatment of palm oil mill effluent using stainless steel electrodes and achieved 95%, 94% and 96% for the removal of COD, Biochemical Oxygen Demand (BOD) and Total Suspended Solids (TSS), respectively. Electrolysis cell containing stainless steel cathode and aluminum anode was used to remove petroleum organics from drilling fluids wastewater [15].…”

Section: Introductionmentioning

confidence: 99%

“…The process is used to remove color and COD of textile dye [20], destruction and removal of Remazol Black B from synthetic dye wastewater [19] and treatment of real textile wastewater with 1280 mg/L initial COD concentration [21]. Different process operating parameters of the electro-coagulation like initial concentration [11,19], electrolysis time [7,16], initial pH [9,12,16,18], current intensity [10],voltage [19], inter-electrode distance [7,8,22], material of the electrodes [8,10,22] and its configuration [21,22] are investigated in various research works. Aim of the current research work is color and COD removal from dye wastewater using electrochemical coagulation cell containing iron electrodes.…”

Section: Introductionmentioning

confidence: 99%

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Innovative Electrochemical treatment of textile dye wastewater

2019

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A PPLICATION of electrocoagulation (EC) for removal of Chemical Oxygen Demand (COD) and color from textile wastewater is the aim of this research. Batch wise experiments were carried out using iron electrodes to investigate effect of pH, current density and electrolysis time on percentage removals. Results show maximum removal efficiency of COD (65%) and color (97%) at 0.9 A and 0.4 A, respectively at 1.6 V and 120 minutes reaction time. Moreover, the results show that the COD removal is influenced by the pH with maximum removal at pH 8. The EC process improves wastewater biodegradability with increasing BOD/ COD ratio from 29% to 34%. The results prove that the EC is effective in color and COD removal. Regarding electrical current, there was no significant difference between 0.5 A and 0.7A in color removal and so 0.5 A is selected as cost effective for the treatment process with estimated Electricity Consumption of 3.2 kWh/m 3. Impact of treated wastewater on oxygen uptake rate of activated sludge biomass was investigated and the results indicated that both dye and minerals content have negative impact and therefore it is recommended to reuse treated effluent in industrial processes or consider total dissolved solids in the effluent disposal limits.

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Section: Effect Of Phmentioning

confidence: 99%

Section: Effect Of Phmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Innovative Electrochemical treatment of textile dye wastewater

2019

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Simultaneous removal of chloride and hardness from groundwater by cassava peel biosorption: Optimization and sorption studies

Nyangi

2023

Remediation Journal

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In this study, activated carbon produced from cassava peel (CP) via carbonization at 400°C was utilized as a biosorbent for the removal of chloride (Cl−) and total hardness (TH) from groundwater. A response surface methodology (RSM) employing a Box–Behnken design (BBD) was implemented to optimize process parameters, including pH (3–10), biosorbent dosage (1–10 g), contact time (10–60 min), initial Cl− concentration (50–2000 mg/L), and initial TH concentration (40–900 mg/L). The biosorbent was applied in a batch reactor setup to evaluate its performance in removing Cl− and TH from groundwater under the optimized conditions. The experimental data showed good agreement with the model predictions, exhibiting R2 of 0.991 and 0.905 for Cl− and TH removal, respectively. The CP biosorbent removed Cl− (245 mg/L) and TH (321 mg/L) by 84% and 90%, respectively, under optimal conditions of 6.9 g CP dose, 19.6 min, and initial pH of 8.1. The sorption kinetics followed a pseudo‐second‐order, and the equilibrium data fit the Freundlich and Langmuir models to Cl− and TH, respectively. The removal of Cl− and TH exhibited maximum adsorption capacities (qm) of 31.25 and 6.57 mg/g for Cl− and TH, respectively. Overall, CP shows potential as an adsorbent for remediating groundwater containing Cl− and TH.

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Formation of Arsenic Minerals in Aqueous Media During Electrocoagulation using Iron Electrodes

2022

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Complex solid residuals can form during the electrocoagulation of arsenic from aqueous media based on the characteristics of the electrochemical system and cooccurring processes, such as adsorption, hydrolysis, chemical precipitation, and flotation. Herein, we study the composition and behaviors of solid residuals produced after electrocoagulation with iron electrodes in various solution media at pH 3, 7 and 10. The instrumental analysis including FTIR, XRD and SEM show that different minerals were formed by electrocoagulation depending on the pH of the solution, and they included scorodite (FeAsO 4 ⋅2H 2 O), symplesite (Fe 3 (AsO 4 ) 2 ⋅8H 2 O), and parasymplesite (Fe 3 (AsO 4 ) 2 ⋅8H 2 O) under acidic conditions; scorodite and kaatialaite (Fe(H 2 AsO 4 ) 3 ⋅5H 2 O) under neutral conditions; and scorodite, symplesite, parasymplesite, and schneiderhoehnite (FeFe 3 As 5 O 13 ) under alkaline conditions. The behaviors of solid residues on distilled water and acidic and alkaline solutions show that adsorption and chemical precipitation occurred simultaneously during the electrocoagulation of arsenic in aqueous media in the different reaction media.

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High performance electrocoagulation process in treating palm oil mill effluent using high current intensity application

Cited by 73 publications

References 45 publications

Innovative Electrochemical treatment of textile dye wastewater

Innovative Electrochemical treatment of textile dye wastewater

Simultaneous removal of chloride and hardness from groundwater by cassava peel biosorption: Optimization and sorption studies

Formation of Arsenic Minerals in Aqueous Media During Electrocoagulation using Iron Electrodes

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