Desirability Analysis of Multiple Responses for Electrocoagulation Remediation of Paper Mill Wastewater by Using a Central Composite Design


The present study illustrates the electrocoagulation remediation of paper mill wastewater for multiple response optimization. Multiple response optimization can be combined into one desirability function. All variables and responses varied for a unique global solution. The effect of basic electrocoagulation process variables pH (3–10), conductivity (3.15–10 mS/cm), electrode distance (1–2.5 cm) and current density (5–20 mA/cm2) on four response parameters such as chemical oxygen demand, color, total dissolved solids and total organic carbon has been analyzed experimentally and statistically. The global solution for these variables and responses obtained by software over a hundred design points. For unit desirability function variables conditions were pH 7.49, Conductivity 8.34 mS/cm, electrode distance 2.06 cm and current density 9.32 mA/cm2. In these global variable conditions, responses were observed to be COD 70.19%, Color 75.03%, TDS 70.69% and TOC 71.93%, respectively.

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Correspondence to Chandrakant Thakur.

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Pandey, N., Thakur, C., Ghosh, P. et al. Desirability Analysis of Multiple Responses for Electrocoagulation Remediation of Paper Mill Wastewater by Using a Central Composite Design. J. Inst. Eng. India Ser. E (2021).

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  • Desirability
  • Paper mill wastewater
  • Electrocoagulation
  • Total organic carbon
  • Multiple responses