Chrysanthi Berberidou

Aristotle University of Thessaloniki | AUTH · School of Chemistry

BACKGROUND Treatment of liquid hazardous medical wastewater produced by healthcare laboratories is a global matter that has been inadequately addressed. In this study, the potential of heterogeneous and homogeneous photocatalytic oxidation to detoxify and disinfect such effluents was investigated. Experiments were performed using two toxic effluent...

Photocatalytic inactivation of pathogens in aqueous waste is gaining increasing attention. Several homogeneous and heterogeneous photocatalytic protocols exist using the Fenton’s reagent and TiO2, respectively. A comprehensive study of homogeneous and heterogeneous photocatalysis on a range of microorganisms will significantly establish the most ef...

The homogeneous photocatalytic degradation of model pesticide clopyralid (CLPR) has been investigated under various experimental setups. Lab-scale experiments under UV-A radiation in an acidic environment showed that the degradation rate generally increased when increasing either Fe3+ or H2O2 concentration up to a point beyond which (i.e., 100 mg L...

BACKGROUND Liquid hazardous medical wastes (LHMW) originating from health‐care laboratory services present a global environmental hazard as most sustainable wastewater treatment technologies fail to address this particularly demanding issue. In this study, heterogeneous and homogeneous photocatalytic oxidation of simulated and real LHMW has been pe...

Defect-engineering of TiO2 can have a major impact on its photocatalytic properties for the degradation of persisting and non-biodegradable pollutants. Herein, a series of intrinsic and extrinsic defects are induced by post annealing of crystalline TiO2 under different reducing atmospheres. A detailed optoelectronic characterization sheds light on...

BACKGROUND Recombination of photogenerated carriers in titanium dioxide (TiO2)‐mediated semiconducting photocatalysis is considered to be the principal obstacle in its unlimited exploitation in practical applications. Hybridization of TiO2 with graphene‐based materials appears to be a highly promising alternative. In this context, reduced graphene...

Availability of safe drinking water is a top-priority issue. Ιts' quality is continuously being degraded by the presence of hazardous organic pollutants, mainly pesticides. United Nations estimates that approximately 99% of pesticides used in agriculture contaminates soil, air and especially water, with unpredictable consequences. Thus, the need to...

Background Pesticides are listed among the main environmental stressors directly correlated with severe impacts on ecosystems and human health. Here, the potential of TiO2‐mediated photocatalytic oxidation of the insecticide thiacloprid, in aqueous media, is investigated thoroughly. Results Degradation was investigated under various operational co...

The present study proposes an integrated system based on the synergetic action of solar photocatalytic oxidation with surface flow constructed wetlands for the purification of wastewater contaminated with pesticides. Experiments were conducted at pilot scale using simulated wastewater containing the herbicide clopyralid. Three photocatalytic method...

BACKGROUND Photocatalytic decomposition and mineralization of the herbicide clopyralid in aqueous solutions has been studied, aiming at an extended kinetic analysis, the elucidation of potential degradation pathways and the determination of ecotoxicity. RESULTSThe pseudo-first-order degradation kinetics was studied under different operational condi...

Prions are notorious for their extraordinary resistance to traditional methods of decontamination, rendering their transmission a public health risk. Iatrogenic Creutzfeldt-Jakob disease (iCJD) via contaminated surgical instruments and medical devices has been verified both experimentally and clinically. Standard methods for prion inactivation by s...

TiO2 mediated photocatalytic disinfection constitutes an attractive emerging technology against waterborne diseases transmitted through pathogenic microorganisms. This study demonstrates the potential of TiO2 suspensions to fully inactivate highly resistant microorganisms, Bacillus stearothermophilus endospores in water, in the presence of artifici...

In the present work, the combined photocatalytic oxidation/membrane filtration system is evaluated by decolorization, organic content and salinity reduction of a synthetic dyestuff effluent (SDE) containing the dye Reactive Black 5, with the scope to produce water that is able to be reused in the dyeing processes. The heterogeneous photocatalytic o...

Prions are proteinaceous infectious agents postulated to be the causative agents of a group of fatal neurodegenerative diseases known as transmissible spongiform encephalopathies (TSEs). A known iatrogenic transmission route of TSEs to humans occurs via prion-contaminated surgical instruments or biological materials. Prions, unlike most common path...

The photocatalytic degradation of Chloramphenicol, an antibiotic drug, has been investigated in aqueous heterogeneous solutions containing n-type oxide semiconductors as photocatalysts. The disappearance of the organic molecule follows approximately a pseudo-first-order kinetics according to the Langmuir-Hinshelwood model. It was observed that, wit...

The degradation of malachite green (MG) in water by means of ultrasound irradiation and its combination with heterogeneous (TiO2) and homogeneous photocatalysis (photo-Fenton) was investigated. Emphasis was given on the effect of key operating conditions on MG conversion and mineralization rates and the elucidation of major reaction by-products. Ei...

The photocatalytic degradation of Alcian Blue 8 GX, a copper phthalocyanine cationic dye, has been investigated in aqueous solutions both in heterogeneous and homogeneous systems. Initial colour removal rates in different conditions were calculated in both cases. Influence of amounts of H2O2 and FeCl3 was studied and compared for the two photocatal...