Mathematical Modeling and Optimization of AnionicDyeRemovalUsingAcacia nilotica(leaves), Terminaliaarjuna(nuts) andBerri ptta(capsule)

Using cost effective and greener approach for water decontamination is the need of the time.Present work deals with the batch mode removal of anionic dye (Alizarin Red S) from waterusingbiological materialsAcacia niloticaleaves(KL),Terminalia arjunanuts(AN)andBerri pttacapsule(BPC). Various parameters like pH, adsorbent dose, temperature, time were optimized tofurther conduct the isothermal, kinetics and thermodynamic studies. Isothermal studies revealedthatqmaxvalues were in the order. AN nuts (52.95 mg/g) > KL (42.546 mg/g) > BPC (40.60 mg/g)following pseudo second order kinetics model. The process of anionic dye removal is spontaneousand exothermic in nature. These biological materials proved very useful for water decontaminationand therefore can be used on large scale.