Performance of Activated carbon from coconut Shell, Chitosan, Starch for Treating dyes: Health Risk Assessment of Aquatic Life

IJEP 44(3): 273-281 : Vol. 44 Issue. 3 (March 2024)

Usha Subburaj*, Piranavpathy E.K., Saravana Pandian S. and Shridar P.

Mepco Schlenk Engineering College, Department of Civil Engineering, Sivakasi – 626 005, Tamil Nadu, India


In 21st century, water pollution due to textile dye industry has turned into a severe problem around the world including India. The dye industry in India is made-up of about 85 large organized units and 4,000 small scale units, they produce around 1,60,000 tonnes of dyestuff per month. These direct discharges of dye wastewater effluent into waterbodies, like lakes, rivers and others, affect plants and animals. The aim of our research is to prepare activated carbon from coconut shell with surface modification through chemical activation method. Adsorption of Allura Red dye was done using both pellet and powder form of activated carbon at different contact times. The effects of contact time, powdered activated carbon and chitosan dosage and speed on adsorption efficiency was studied. The maximum removal efficiency of 96.73% was achieved at optimum contact time of 90 min with the ratio of 2:1:1 of chemically activated carbon, chitosan and dye wastewater. Adsorption kinetics were also studied and it followed the second order kinetics. The effect of dyes when it is discharged into natural waterbodies was studied.


Allura Red dye, Activated coconut shell, Adsorption


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