A STUDY ON THE ADSORPTION OF Ni(II) IONS FROM WASTEWATER USING ACID ACTIVATED ANISOMELES MALABARICA LEAVES

Abstract

In the present investigation, the efficiency of activated carbon prepared from Anisomeles malabarica leaves (AMC) as an adsorbent for the removal of Ni (II) ion was investigated. Anisomeles malabarica leaves were treated with sulphuric acid before adsorption. The influence of various operating conditions such as adsorbent dosage, initial concentration of adsorbate, contact time, pH and temperature were explored in a Batch adsorption technique. The Langmuir, Freundlich and Tempkin isotherm models were used to compute the experimental outcomes. Freundlich Isotherm model were fitted well than that of other two isotherm models. The maximum adsorption capacity was obtained as qm =361.73 mg/g with the optimum conditions of adsorbent dosage 25mg, temperature 30˚C, initial adsorbate concentration 30mg/L, contact time 30min and pH 6.5.