Removal of Congo Red Dye from Industrial Wastewater by Untreated Sawdust

Abstract

See, stats, and : https : / / www . researchgate . net / publication / 281553600 Removal Wastewater Article DOI : 10 . 11648 / j . ajep . 20150405 . 12 READS 104 1 : Mohammad Center 62 SEE All - text , letting . Available : Mohammad Retrieved : 11 Abstract : Dyes have widespread applications and exist in the effluents of various manufacturing and processing units ; therefore , its discharge has a severe environmental impact . However , the complex aromatic molecular structures of dyes make them very stable , and as a result , more difficult to biodegrade . The objective of the present study is to explore the feasibility of using untreated sawdust in the removal of Congo Red dye from industrial wastewater . The adsorption study was carried out using different particle sizes of adsorbent (90 µm , 144 µm and 355 µm) , different pH values ranging from 5 . 0 to 11 . 0 along with different adsorbent amounts from 2 . 0 to 8 . 0 g . Flow rate was also varied in the range of 0 . 3 to 0 . 7 mL / min . Optimization of volume required for saturation of untreated sawdust was investigated . Adsorption method showed the optimum removal of Congo Red dye under the following conditions : constant initial concentration of 10 mg / L dye solution , volume of 200 . 0 mL , flow rate 0 . 3 mL / min , adsorbent amount 8 . 0 g and particle size of 90 µm . This effective removal method may provide a promising solution of removal of Congo Red dyes from textile wastewater in Bangladesh as well as other countries of the world .