Surfactant modified tea waste as a novel adsorbent for the removal of Basic dye

Textile industries consume large amount of water and generate highly dye contaminated effluent. The objective of present study was to examine the potential use of Tea waste and anionic surfactant modified house hold tea waste as a low cost sorbent for a basic dye removal from simulated textile effluent. The adsorbents were characterized by XRD, SEM and FTIR techniques. Batch adsorption experiments were carried out for the removal of Basic Red 12 from aqueous solution using tea waste and surfactant modified tea waste. This study examined the effects of parameters like contact time, pH, temperature, adsorbent dose, dye concentration etc. A fixed bed column was designed for the bulk removal of dye from simulated waste water. The effect of inlet flow rate, sorbent bed height and initial dye concentration was studied. The kinetic measurements helped in determining the specific rate constant for the process. Freundlich, Langmuir and Harkins Jura isotherm models were investigated. The values of thermodynamic parameters like
H0,
S0,
G0 were calculated from the isotherm data. Our results reinforce the fact that structure and quantity of natural organic materials can control the sorption of organic pollutants from the water.

Author(s): Ekta Khoslaa, Satindar Kaurb and Pragnesh N. Dave

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