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Title

REMOVAL DGB ACID GREEN COLOR FROM INDUSTRIAL WASTEWATER BY ADSORPTION ONTO IRON OXIDE FE3O4 NANOPARTICLES

Pages

 Start Page | End Page

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Abstract

 THE EFFICACY OF IRON OXIDE NANOPARTICLE FE3O4 (MNP) WAS INVESTIGATED IN THIS STUDY AS A NOVEL ADSORBENT FOR THE ELIMINATION OF DYE MOLECULES FROM CONTAMINATED STREAMS. REMOVAL OF ACID GREEN DGB (DGB) AS AN ACIDIC MODEL DYE BY MNP FROM AQUEOUS SOLUTION WAS STUDIED UNDER DIFFERENT EXPERIMENTAL CONDITIONS. . THE SODIUM SALTS OF ORGANIC DYES AND DYEING PROTEIN AND NYLON FIBERS ARE USED [1]. THE SELECTED PARAMETERS WERE SOLUTION PH(2–12), MNP DOSAGE (0.05– 0.2G), DGB CONCENTRATIONS(25–100 MG/L) ,CONTACT TIME (0- 60 MIN), AND SOLUTION TEMPERATURE (25, 35 AND 45 ◦C). THE EXPERIMENTAL RESULTS INDICATED THAT THE MAXIMUM MB5 REMOVAL COULD BE ATTAINED AT A SOLUTION PH OF 3. THE DOSAGE OF MNP WAS ALSO FOUND TO BE AN IMPORTANT VARIABLE INFLUENCING THE DGB REMOVAL PERCENTAGE. THE REMOVAL EFFICIENCY OF DGB IMPROVED WHEN THE DGB CONCENTRATION WAS DECREASED FROM 100 TO 25 MG/L AT A PH AND RH DOSAGE OF 3 AND 0.2G, RESPECTIVELY. THE KINETIC ANALYSIS SHOWED THAT THE PSEUDO- SECOND ORDER MODEL HAD THE BEST FIT TO THE EXPERIMENTAL DATA. DIFFERENT ISOTHERM EQUATIONS PROVIDED FROM THE EXPERIMENTAL DATA OF THE EQUILIBRIUM ADSORPTION OF DGB ONTO MNP AT DIFFERENT TEMPERATURES. TEMKIN EQUATIONS SHOW THE BEST FIT WITH THE EXPERIMENTAL DATA. THE THERMODYNAMIC VALUATION OF DGB ADSORPTION ON MNP REVEALED THAT THE ADSORPTION PHENOMENON UNDER THE SELECTED CONDITIONS WAS A SPONTANEOUS PHYSICAL PROCESS.

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