EFFECTIVENESS & ECONOMY OF SAWDUST WOOD ADSORBENTS IN REMOVING ANIONIC DYES OF AQUEOUS SOLUTIONS

Abstract

Adsorption of methyl orange (MO) from the aqueous solution on a low-cost adsorbent made of sawdust wood (SW) is studied experimentally. In the current research, a comparative study has been conducted between the natural sawdust wood (SW) and the activated sawdust wood (ASW). Conditions of experimental study were included the followings: 10 ppm of methyl-orang, pH=6 and a dosage in the range of 0.5 - 2 gm for different sizes of sawdust. During the study, Fourier-transform infrared spectroscopy-(FTIR) as well as (UV/V) is spectroscopy techniques were used. Results obtained indicate that the removal efficiency of methyl orange at 25 ± 3 C exceeded 38.7%. A good fit for equilibrium data was obtained as per Langmuir model (R2> 0.99). Maximum adsorption capacity of MO on ASW is 1.8 mg g-1. Results analysis of the activated sawdust waste show more a potential effectiveness as cheap adsorbent for the dyes removal from industrial wastewater.