METHYLENE BLUE BIOADSORPTION POTENTIAL OF AGRICULTURAL WEED ACHYRANTHES AESPERA
Rajesh Kumar Lohchab1, Manju Yadav1 and Poonam2
1Department of Environmental Science and Engineering, Guru Jambheshwar University of Science and Technology, Hisar, 125001, Haryana (India)
2Government Girls Senior Secondary School, Village Mangali, Hisar (Haryana)
A bioadsorbent was developed from Achyranthes aespera plants for removing methylene blue from waste water. The optimum conditions of bioadsorption were determined by investigating the operating variables i.e. solution pH, dye concentration, adsorbent dose and contact time. The bioadsorbent in the form of fine powder was found to be very effective in removing methylene blue dye from aqueous solution. The extent of methylene blue removed increased with increasing contact time and dose. The maximum removal (92.7%) of Methylene blue by bioadsorbent was observed at adsorbent dose 0.6 g/50 ml of dye solution of 50 ppm, pH 10 and contact time of 2hrs. Equilibrium data were well fitted to Freundlich and Langmuir isotherm equations.
Keywords: bioadsorbent, Achyranthes aespera, methylene blue, waste water, solution pH, dye concentration, adsorbent dose