The electrocoagulation set-up is schematically shown in Fig. 2.
The electrocoagulation reactor consists of a circular batch
cylindrical reactor with 11 cm in diameter made of glass with
2 L capacity of aqueous solution. The cathode consists of a circular
horizontal iron plate that has a 11 cm diameter and
placed at the cell bottom; its back is insulted with epoxy resin.
The anode was made of 4 arrays of separated horizontal rods,
each rod is 15 cm long and 0.3 cm diameter and has a7 hex
nuts, and the rods in the array are separated by a distance of
0.87 cm. The horizontal rods were fixed at their ends to two
iron rods, each of the cathode and anode is held in position by a welded and insulated vertical iron strip to act as a current
feeder. The cathode and anode are separated by a perforated
plastic sheet of a 1 mm thickness. The electrical circuit consists
of a digital DC power supply (20 V, 5 A).