CATALYTIC EFFECTS OF THE SYNTHESIZED PYRITE NANOPARTICLES ON THE DEGRADATION OF DICLOFENAC

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KHABBAZ M.; ENTEZARI M.H.

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Seminar Paper

Paper Information

Seminar: SEMINAR OF CHEMISTRY AND ENVIRONMENT
Year:2015 | Issue:7

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Title

CATALYTIC EFFECTS OF THE SYNTHESIZED PYRITE NANOPARTICLES ON THE DEGRADATION OF DICLOFENAC

Author(s)

KHABBAZ M. | ENTEZARI M.H. | Issue Writer Certificate

Keywords

PYRITE

NANOPARTICLE

DICLOFENAC

PHARMACEUTICAL

DEGRADATION

Abstract

THE CONCERN OVER PHARMACEUTICALS AND THEIR TOXICITY IN WASTEWATER AND DRINKING WATER HAS GROWN OVER THE PAST DECADE [1]. IN THIS STUDY, THE ABILITY OF SYNTHESIZED PYRITE NANOPARTICLES WAS INVESTIGATED IN DEGRADATION OF DICLOFENAC (DCF) AS ONE OF THE COMMON ANTI-INFLAMMATORY AND MODEL POLLUTANTS. THE EFFECTS OF PYRITE LOADING, INITIAL PH AND SCAVENGERS ON REACTION WERE EVALUATED. THE RESULTS INDICATED THAT THE SYNTHESIZED PYRITE NANOPARTICLES HAVE AN EXCESSIVE ACTIVITY IN THE DEGRDATION OF DCF. BASED ON UV-VIS SPECTROSCOPY ASSESSMENT, COMPLETE DEGRADATION (100%) OF DCF WAS OBSERVED WITHIN 3 MIN. BESIDES, THE DOSE OF PYRITE AND PH WERE 40 MG/L AND 3, RESPECTIVELY. TO GAIN AN UNDERSTANDING OF THE ROLE OF PYRITE IN THESE PROCESSES, TECHNIQUES INCLUING UV-VIS SPECTROPHOTOMETRY AND SCAVENGERS WERE EMPLOYED TO INVESTIGATE DCF CONCENTRATION AND THE REACTION MECHANISM, RESPECTIVELY. COMPLETE DEGRADATION WAS VERIFIED BY CHEMICAL OXYGEN DEMAND (COD) (FIGURE 1), AS WELL THE COD MEASUREMENTS ESTIMATED THAT DCF FINALLY DEGRADED TO FURTHER OXIDIZED FORMS (ORGANIC ACIDS, HCL AND CO2). EXPERIMENTS DEMONSTRATED THAT THE HIGH LEVELS OF FE2+IONS HAVE RESULTED FROM DISSOLUTION OF PYRITE. THEREFORE, FERROUS IRON AND OH RADICAL THAT WERE GENERATED FROM PYRITE LEADING TO THE FAST DEGRADATION OF DCF (AS A FENTON REACTION).

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APA: Copy

KHABBAZ, M., & ENTEZARI, M.H.. (2015). CATALYTIC EFFECTS OF THE SYNTHESIZED PYRITE NANOPARTICLES ON THE DEGRADATION OF DICLOFENAC. SEMINAR OF CHEMISTRY AND ENVIRONMENT. SID. https://sid.ir/paper/913275/en

Vancouver: Copy

KHABBAZ M., ENTEZARI M.H.. CATALYTIC EFFECTS OF THE SYNTHESIZED PYRITE NANOPARTICLES ON THE DEGRADATION OF DICLOFENAC. 2015. Available from: https://sid.ir/paper/913275/en

IEEE: Copy

M. KHABBAZ, and M.H. ENTEZARI, “CATALYTIC EFFECTS OF THE SYNTHESIZED PYRITE NANOPARTICLES ON THE DEGRADATION OF DICLOFENAC,” presented at the SEMINAR OF CHEMISTRY AND ENVIRONMENT. 2015, [Online]. Available: https://sid.ir/paper/913275/en

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