APPLICATION OF MNO2 NANOPARTICLES FOR DYE REMOVAL FROM AQUEOUS SOLUTIONS

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ANSARI R.; MAHMOODI N.; DEZHAMPANAH H.

مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

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Seminar: IRANIAN CHEMISTRY CONGRESS
Year:2013 | Issue:16

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Title

APPLICATION OF MNO2 NANOPARTICLES FOR DYE REMOVAL FROM AQUEOUS SOLUTIONS

Author(s)

ANSARI R. | MAHMOODI N. | DEZHAMPANAH H. | Issue Writer Certificate

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Abstract

INDUSTRIES THAT USE DYES IN DIFFERENT PROCESSES OF THEIR PRODUCTION LINES GENERATE WIDESPREAD WASTEWATER CONTAINING OF SIGNIFICANT AMOUNT OF DYE COMPOUNDS. MOST OF DYES ARE TOXIC AND DIFFICULT TO BIODEGRADE. THEREFORE, IT IS ESSENTIAL TO DEVELOP METHODS THAT CAN LEAD TO DESTRUCTION OF SUCH COMPOUNDS BEFORE THEIR DISCHARGE INTO RIVERS OR ENVIRONMENT. VARIOUS METHODS SUCH AS CHEMICAL, ELECTROCHEMICAL, BIOLOGICAL AND ADSORPTION ARE USED FOR TEXTILE WASTEWATER TREATMENT. AMONG THEM, SORPTION TECHNIQUE EMPLOYING LOW COST ADSORBENTS HAS BEEN PROVED TO BE THE MOST SUITABLE BECAUSE OF ITS EFFICIENCY, FLEXIBILITY, AND ECONOMIC FEASIBILITY [1-3]. IN THE CURRENT WORK, MANGANESE DIOXIDE NANOPARTICLES (MNO2 NPS) WAS PREPARED VIA CHEMICAL ROUTE IN THE LAB AND CHARACTERIZED USING XRD, SEM, AND IR SPECTROSCOPIC TECHNIQUES. THE PREPARED MNO2 NPS THEN WERE USED AS ADSORBENT FOR REMOVAL OF MALACHITE GREEN (MG) DYE FROM AQUEOUS SOLUTIONS. MG IS A BASIC DYE WHICH IS WIDELY USED FOR COLORING VARIOUS FABRICS SUCH AS WOOL, COTTON, LEATHER AND ACRYLIC. THE ADSORPTION EXPERIMENTS WERE CONDUCTED IN BATCH MODE. IN ORDER TO FIND OUT THE MAXIMUM REMOVAL CONDITIONS, THE EFFECT OF IMPORTANT PARAMETERS SUCH AS PH, ADSORBENT DOSE, CONTACT TIME, INITIAL DYE CONCENTRATION, TEMPERATURE AND IONIC STRENGTH, WERE INVESTIGATED. THE EQUILIBRIUM ADSORPTION DATA OBTAINED FROM INITIAL CONCENTRATION, CONTACT TIME AND SOLUTION TEMPERATURE WERE USED FOR ISOTHERM, KINETIC AND THERMODYNAMIC INVESTIGATION RESPECTIVELY. THE KINETICS OF ADSORPTION WAS STUDIED APPLYING THE PSEUDO-FIRST, PSEUDO-SECOND ORDER AND INTRA-PARTICLE DIFFUSION MODELS. THE DATA OBTAINED SHOWS THAT THE SORPTION PROCESS IS OCCURRED VERY FAST (~10 MIN) AND WITH HIGH EFFICIENCY (98%). MAXIMUM ADSORPTION CAPACITY OF 200 MG/G CAN BE ACHIEVED WITH THE INTRODUCED ADSORBENT. WITH REGARD TO THE HIGH PERFORMANCE OF THE ADSORBENT USED IN THE CURRENT STUDY, MNO2 NPS MIGHT BE CONSIDERED AS A PROMISING AND NOVEL ADSORBENT FOR DYE REMOVAL NANOTECHNOLOGY.

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APA: Copy

ANSARI, R., MAHMOODI, N., & DEZHAMPANAH, H.. (2013). APPLICATION OF MNO₂ NANOPARTICLES FOR DYE REMOVAL FROM AQUEOUS SOLUTIONS. IRANIAN CHEMISTRY CONGRESS. SID. https://sid.ir/paper/915476/en

Vancouver: Copy

ANSARI R., MAHMOODI N., DEZHAMPANAH H.. APPLICATION OF MNO₂ NANOPARTICLES FOR DYE REMOVAL FROM AQUEOUS SOLUTIONS. 2013. Available from: https://sid.ir/paper/915476/en

IEEE: Copy

R. ANSARI, N. MAHMOODI, and H. DEZHAMPANAH, “APPLICATION OF MNO₂ NANOPARTICLES FOR DYE REMOVAL FROM AQUEOUS SOLUTIONS,” presented at the IRANIAN CHEMISTRY CONGRESS. 2013, [Online]. Available: https://sid.ir/paper/915476/en

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