Comparative Study on Commercial and Corn Cobs Activated Carbon for Removal of Congo Red Dye

Abstract:

Garments plays a vital role among the basic needs of human life, hence there are lots of demand and production of dyestuffs every year to colour the fabrics. In the dyeing process 10 to 20% of the dyes are wasted as effluent. Dye laden wastewater is treated by biological or chemical treatment which is found to be inadequate and expensive. In this study, an attempt has been made to prepare an activated carbon from agro-waste based material, Corn Cobs which are abundantly available in Tamil Nadu. Base activation of Corn Cobs was done with ZnCl₂ solution for 12 hours and carbonized at 350º C for 2 hours. A kinetic experimental study was carried out for Congo red dye removal. In the preliminary studies both the Commercial Activated Carbon (CAC) and Corn Cobs Activated Carbon (CCAC) with various initial adsorbate concentration of 50, 65, 75, 100 and 125 ppm were considered. For further studies on the effect of various parameters such as the contact time and adsorbent dosage, initial concentration of adsorbate was chosen as 65 ppm. The other experimental parameters such as temperature and initial pH were kept at 27±0.5°C and 6.8±0.2 respectively. The experimental results of both CAC and CCAC were compared. The CCAC showed a removal of 97.8% at an adsorbent dosage of 1.2 g, whereas the CAC showed a removal of 98.1% at a dosage of 0.3 g. The result shows that CCAC has abundant potential for the removal of dye.

• Periodical: Applied Mechanics and Materials (Volume 787)
• Pages: 233-237
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.787.233
• Online since: August 2015
• Authors: K.R. Leelavathy, V. Nageshwaran*, M. Bharathi
• Keywords: Adsorption, Adsorption Kinetics, Agro-Waste Adsorbent, Bio Adsorbent, Congo Red Dye Adsorption, Dye Removal, Isotherms, Low Cost Adsorbent, Natural Adsorbent

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