Textile wastewater treatment by the adsorption-EC hybrid method: the effect of process parameters and economic study

The current study covers the textile wastewater (TW) treatment by the electrochemical (EC) method in individual and hybrid modes. The EC experiments have been performed to optimise the operating parameters and current: 1 A, NaCl dose: 1 g/L; solution pH: 7; IED: 1.5 cm and stirrer speed: 1000 RPM have been optimised during the experimental study. Furthermore, the effect of bagasse fly ash (BFA) and bagasse fly ash-based nanoparticles (BFA-NC) adsorbent on the EC process has been studied. By adding 1 g/L of BFA and BFA-NC in the EC process, the % COD removal is increased from 86 to 92 and 97%, respectively. While the treatment time is reduced from 60 to 45 & 30 min, respectively. Overall, INR 74.59, 59.61 and 41.04 per kg COD removal is needed for EC, EC + BFA & EC + BFA-NC, respectively for TW treatment. The sludge/scum can produce 2.37, 3.32 and 3.39 J/mg energy generated EC, EC + BFA & EC + BFA-NC, respectively.