**2.1. Wastewater characteristics**

The wastewater used for the present study was obtained from one of the foremost textile industries in Babylon (Iraq). For dyeing of fabrics, the industry employs Imperon Violet KB (CAS #: 6358-46-9). **Table 1** presents the major characteristics of the textile wastewater, while **Table 2** shows the properties of the employed Imperon Violet KB.

**2.3. Experimental procedure**

**Table 1.** Characteristics of textile wastewater.

Chlorides, Cl<sup>−</sup>

The performance of EC process was determined based on color removal, TSS and COD. The experiment was initially performed by investigating the influence of CD and the anode rotation speed. The overall competence of the reactor was investigated using three major variables: overall rotation speed of the anode, CD and processing time. The value of RT of

**Parameters Values** Electrical conductivity (μS/cm) 1455 Turbidity (NTU) 396 Total suspension solid, TSS (mg/L) 3270 Total dissolved solid, TDS (mg/L) 1250 Dissolved oxygen, DO (mg/L) 0.72 pH 4.50

Treatment of Textile Wastewater Using a Novel Electrocoagulation Reactor Design

http://dx.doi.org/10.5772/intechopen.76876

113

(mg/L) 35

Sulfate (mg/L) 678 Phosphate (mg/L) 7.2 Nitrates (mg/L) 11 Phenols (mg/L) 335 Oil and grease (mg/L) 3.2 BOD (mg/L) 112 COD (mg/L) 990

anode rotation speed (75, 150 and 250 rpm) were observed at room temperature (25–27°C). The selection of the current densities was based on some initial studies, which show an insignificant change in the total removal efficiency when the value of CD exceeds 8 mA/cm<sup>2</sup>

all the runs, a 10 L sample was used for the EC process, and nine different batches of EC runs were performed. Upon concluding each run, a primary sample was removed, and the cells were washed with a 5% HCl solution for 10 min and subsequently washed using a sponge. The anode and cathode were linked to the positive and negative parts of DC power supply (YIZHAN, 0–6 A; 0-40 V, China). 30 V was used as the main voltage was for each experiment. For voltage measurement, a voltmeter was attached to the cell in parallel. For each run, the current was kept constant by using a variable resistance and monitored using an ammeter. For each iteration, the samples were left to settle for 30 min and subsequently filtered. About 100 ml of supernatant sample was collected for examination and analysis in replicates. The

) with different steady-state

. For

10–30 min was maintained. Three values of CD (4, 6 and 8 mA/cm<sup>2</sup>

same parameters were examined for the entire replicated sample.
