Conference Proceeding Paper -

Catalytic photodegradation of diclofenac from synthetic wastewater using MgO nanoparticles synthesized by direct precipitation method
Catalytic photodegradation of diclofenac from synthetic wastewater using MgO nanoparticles synthesized by direct precipitation method

Conference Proceeding Paper -

Catalytic photodegradation of diclofenac from synthetic wastewater using MgO nanoparticles synthesized by direct precipitation method

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The catalytic photodegradation of diclofenac, which is a non-steroidal anti-inflammatory drug, from synthetic waste water was investigated under a 254 nm ultra-violet light using MgO nanoparticle as a photocatalyst. The kinetics of the catalytic photodegradation of DF was followed in batch system. It was found that DF degrades to form by-products which are in turn degrades further with slower rates to other by-products and /or CO2 and H2O. The reaction was found to be of consecutive type with the observed pseudo first-order rate constants for the overall catalytic photodegradation (kobs1 = 0.1191, 0.0411, 0.0127 and 0.0052 min−1 for the initial concentrations of DF = 10, 20, 50 and 100 mg L−1). 100% degradation efficiency was obtained in 60 min for 10 mg L−1 DF. The pseudo-first order rate constant for the adsorption (kAds) of DF on 0.1 g MgO-NPs was measured as 0.00762 min−1 and the photolysis rate constant (kp) (0.0069 min−1).

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