Investigation on the Efficiency of Activated Carbon Produced from Grapes Wood for the Removal of Reactive Blue 19 and Reactive Red 198 dyes from Aqueous Solution- Equilibrium and Kinetic Studies

Reactive dyes are the most commonly used dyes in textile industry. During the dyeing process about 60 to 70 percent of consumer dye is fixed on the fibers. So about 10-15 % of consumed reactive dyes enters into the wastewater and causes environmental problems. The aim of this study was to remove Reactive Blue 19 and Reactive Red 198 dyes using activated carbon made from waste of tree pruning grapes in a batch system.

In this study, activated carbon were synthesized with phosphoric acid in a ratio of 1: 2 at 400 C °. Also the optimum conditions for maximum adsorption of reactive Blue 19 and Red 198 dyes was determined (pH=2, adsorption dose= 0.05 g/l, dye concentration = 300 mg/l, temperature = 60°C, solution volume = 200 mL and contact time= 120 min).

Batch adsorption results showed that activated carbon sample with a surface area 1950 m2/g and total pore volume 1.588 cm3/g and 51 percent pore size distribution in the range of micro-hole with the maximum adsorption capacity 1154 mg/g for Reactive Blue19 and 431 mg/g for Reactive Red 198 (In optimum condition) has great potential for the removal of dyes. Experimental data for Reactive Blue 19 are more compliance with Freundlich model and experimental data for Reactive Red 198 are more compliance with Langmuir model. Adsorption of dyes also be followed pseudo-second-order kinetic model.

The study showed activated carbon produced from annual pruning vineyards waste has high potential in the treatment of textile wastewater