Statistical analysis of salinity reduction in Borneo tropical brackish peat water with continuous electrocoagulation treatment system

Rahman, Nazeri Abdul; Jol, Calvin Jose; Linus, Allene Albania; Borhan, Wan Wafi Shahanney Wan; Jalal, Nur Syahida Abdul; Baharuddin, Nooranisha; Samsul, Shaleen Nur Ain; Mutalip, Nurshazatul’aini Abdul

doi:10.1016/j.hazadv.2023.100265

Cited by 4 publications

(1 citation statement)

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“…Factorial designs only predict the variables’ linear trend and cannot determine curvature or critical points in the designed space 46 ; therefore, RSM was used to model the process with the least number of experimental runs and with a precise analysis of the variables in different formats. Based on the number of variables, a specific number of experiments are designed according to the following equation: where E is the number of demanded experiments for analysis, V is the number of independent variables, and P is the number of replications at the central point.…”

Section: Methodsmentioning

confidence: 99%

Domestic greywater treatment using electrocoagulation-electrooxidation process: optimisation and experimental approaches

Mousazadeh,

Khademi,

Kabdaşlı

et al. 2023

Sci Rep

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A synergistic combination of electrocoagulation-electrooxidation (EC-EO) process was used in the current study to treat domestic greywater. The EC process consisted of an aluminium (Al) anode and an iron (Fe) cathode, and the EO process consisted of titanium with platinum coating mesh (Ti/Pt) as an anode and stainless steel as a cathode. The effect of operative variables, namely current density, pH, EC time and EO time, on the removal of chemical oxygen demand (COD), colour, turbidity, and total organic carbon (TOC) was studied and optimised using Response Surface Methodology (RSM). The results showed that although the pH affected the removal of all studied pollutants, it had more effect on turbidity removal with a contribution of 88.44%, while the current density had the main dominant effect on colour removal with a contribution of 73.59%. It was also found that at optimal operation conditions for a current density of 2.6 A, an initial pH of 4.67, an EC time of 31.67 min, and an EO time of 93.28 min led to a COD, colour, turbidity, and TOC removal rates of 96.1%, 97.5%, 90.9%, and 98%, respectively, which were close to the predicted results. The average operating cost and energy consumption for the removal of COD, colour, turbidity, and TOC were 0.014 $/m3 and 0.01 kWh/kg, 0.083 $/m3 and 0.008 kWh/kg, 0.075 $/m3 and 0.062 kWh/kg, and 0.105 $/m3 and 0.079 kWh/kg, respectively.

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Section: Methodsmentioning

confidence: 99%