Electrochemical Treatment of Effluent from Small-Scale Dyeing Unit

Abstract

Electrochemical treatment of small-scale dyeing unit effluent containing Reactive Yellow 86, Indanthrene Blue RS, Basic GR 4 and Reactive Yellow 145 dyes was carried out with aluminium electrodes in batch mode of operation. The effluent was characterized for various parameters. The experiments were performed for 120 min, keeping the inter-electrode distance at 3 cm with a current density of 0.0625 A/cm 2 ; the colour removal efficiency was determined for each of the four dyes. A colour removal efficiency of 97% was obtained for each of the dyes for an electrolysis time of 120 min. Further experiments were performed using aluminium sulphate as chemical coagulant to compare the colour removal efficiencies obtained by electrocoagulation and chemical coagulation.

Treatment of Dairy Wastewater by Electrocoagulation using Iron Filings Electrodes

“…5 shows that the optimum removal efficiency of P was 91.7% at 250 mg/L. This result is consistent with the finding of another study with 92.65% removal efficiency of P 40 . Meanwhile, Fig.…”

Electrochemical technologies for wastewater treatment and resource reclamation

“…Electrocoagulation was first proposed in the nineteenth century and the first treatment plant was erected in 1889 in London for the treatment of sewage wastewater. EC or ECF processes are now used widely in the treatment of many types of wastewaters including dye and textile wastewater, [373][374][375][376][377] refractory oily wastewater, [378][379][380] municipal wastewater, [381][382][383][384][385] manufacturing wastewater, [386][387][388] and wastewaters with phenol, 389 toxic metals [390][391][392][393] and inorganic metals. [394][395][396][397][398] Bench and pilot-scale research studies on using EC and ECF technologies to remove pollutants from many types of water and wastewaters were recently reviewed by Emamjomeha et al, 399 while Khandegar et al provided a more focused review on removal of dyes from textile effluents.…”

Optimization of color and COD removal from livestock wastewater by electrocoagulation process: Application of Box–Behnken design (BBD)

“…Also, by increasing the current denstiy of the cell, the amount of hydrogen bubbles at the cathode increased, resulting in a greater upward flux and a faster removals of color and COD[39,40].…”