An Investigation On The Removal Of Iron And Chromium From Steel Industry Effluent By Adsorption Process Using Brewery Spent Grain

Abstract

Presence of excess heavy metals in water leads to various health problems due to their toxicity. In this paper removal of chromium and iron by using brewery spent grain as adsorbent were studied the adsorption study was evaluated as initial concentration, time, dose and pH of both chromium and iron. BSG was treated with 4M sulphuric acid, cellulose of BSG extracted and grinded to have particle size 250-350 µm. Batch adsorption was done using artificial waste water containing synthesized Fe3O4 for iron and potassium dichromate for chromium. The batch adsorption result indicates that removal percentage of chromium and iron was 87.94% & 97.85% at pH=2 & pH=6 respectively. And also, adsorption parameters equilibrium isotherm and kinetics were conducted. The sorption of chromium by brewery spent grain is well fitted to both Langmuir and freudlich isotherm model with correlation coefficient of 0.98085 and 0.9832 respectively. In addition, the result of the kinetic model proved that pseudo-second-order provided a good description of the experimental data with a maximum R2 of 0.990 and 0.999 respectively for Iron and chromium respectively. So it can be concluded that treated brewery spent grain can be best to remove chromium and iron from waste water.Presence Of Excess Heavy Metals In Water Leads To Various Health Problems Due To Their Toxicity. In This Paper Removal Of Chromium And Iron By Using Brewery Spent Grain As Adsorbent Were Studied The Adsorption Study Was Evaluated As Initial Concentration, Time, Dose And Ph Of Both Chromium And Iron. Bsg Was Treated With 4m Sulphuric Acid, Cellulose Of Bsg Extracted And Grinded To Have Particle Size 250-350 ??M. Batch Adsorption Was Done Using Artificial Waste Water Containing Synthesized Fe3o4 For Iron And Potassium Dichromate For Chromium. The Batch Adsorption Result Indicates That Removal Percentage Of Chromium And Iron Was 87.94% & 97.85% At Ph=2 & Ph=6 Respectively. And Also, Adsorption Parameters Equilibrium Isotherm And Kinetics Were Conducted. The Sorption Of Chromium By Brewery Spent Grain Is Well Fitted To Both Langmuir And Freudlich Isotherm Model With Correlation Coefficient Of 0.98085 And 0.9832 Respectively. In Addition, The Result Of The Kinetic Model Proved That Pseudo-Second-Order Provided A Good Description Of The Experimental Data With A Maximum R2Of 0.990 And 0.999 Respectively For Iron And Chromium Respectively. So It Can Be Concluded That Treated Brewery Spent Grain Can Be Best To Remove Chromium And Iron From Waste Water.