Evaluation of efficiency in congored dye removal - By casurina leaves in twodifferent approch

摘要

The objective of this work is the study of adsorption of dye solution which is a phenol red using low cost adsorbent Casuarinas fresh leaf (sample I) and Casuarinas dried leaf (sample II). Removal of phenol red dye from aqueous solution using these two adsorbents has been investigated. Liquid phase adsorption experiments were conducted. Batch adsorption studies are carried out by observing the effect of experimental parameters namely adsorbent dose, initial dye concentration, time agitation and effect of pH. In present study it was observed that adsorption of initial dye concentration 700mg/L solution showed ,17% adsorption in adsorbent (I) whereas 14% in adsorbent(II). The maximum adsorption observed was 40% with 1gm adsorbent (I) dose, (for the same concentration 700mg/L of dye solution at same condition. The Effect of Time of 100 min contact time for same condition of 700mg/L & 3gm adsorbent dose showed not much difference as adsorbent (I) gives 22% & adsorbent (II) gives 25% adsorption. Since this initial dye concentration of phenol red is acidic dye pH variation of 7, 7.5, 8.5 showed negative value.