In this study, the effectiveness of a rhodamine B (RhB) dye degradation process at concentration 20 mg/L in different advanced oxidation processes—H2O2/UV, O3/UV and PDS/UV—has been studied. The use UV photo-assisted ozonation (O3/UV) proved to be most effective method RhB decolorization (90% after 30 min 100 mg/L). addition sulfate radical precursors (sodium persulfate, PDS) reaction environme...

Since the dark ozonation of frozen NaCl/NaBr solutions is known to exhibit a (nonlinear) [O3] dependence (Oldridge and Abbatt, 2011), and the observed photochemical dihalogen production may be sensitive to the extent of bromide ion depletion and the gas phase concentration of the dihalogens themselves, the effect of [O3] on the photochemical dihalogen production was investigated in experiments ...

There is a growing concern about environmental pollution with digestate, which produced in significant amounts the anaerobic digestion process. The inappropriate application of digestate agriculture may lead to ammonia emission atmosphere, nutrients infiltration groundwater and surface waters eutrophication. great interest development efficient downstream technologies that will help better hand...

This research attempts to find a new approach for the removal of arsenic (As) from drinking water by developing novel solution. To author’s knowledge, iron-loaded activated carbons (Fe-AC) have not been previously applied As in synergistic process using ozonation and catalytic processes. The was investigated samples different areas Lahore, Pakistan, compared with without catalysts. results also...

In a previous work we have shown that heparin, in the presence of ozone (O3), promotes a dose-dependent platelet aggregation, while after Ca2+ chelation with citrate, platelet aggregation is almost negligible. These results led us to think that aggregation may enhance the release of platelet components. We have here shown that indeed significantly higher amount of platelet-derived growth factor...

The current study aimed to examine the overall feasibility of the use of copper oxide nanoparticles (CuO-NPs) as a catalyst in ozonation process for the removal of benzene from aqueous solutions under experimental conditions. This experimental study was conducted on a laboratory scale reactor in a semi-batch mode. The effect of critical operating parameters such factors as pH, concentration of ...

Nanometer zinc oxide (ZnO) powders were used as a catalyst to enhance the ozonation for the degradation of dichloroacetic acid (DCAA) in aqueous solution. The batch experiments were carried out to investigate the effects of key factors such as catalyst dosage, ozone dosage, solution pH and tert-butyl alcohol (t-BuOH) on the degradation efficiency of DCAA. Density functional theory (DFT) was ado...

Polyhydroxyalkanoates (PHA), an intracellular energy and carbon storage polymer, can be accumulated in activated sludge in substantial quantities under wastewater dynamic treatment (i.e., substrate feast-famine) conditions. However, its influence on hydrogen production has never been investigated before. This study therefore evaluated the influences of PHA level and composition in waste activat...

The ample increase in water scarcity and depletion of natural resources due to their overconsumption the contamination sources becomes more challenging day by day. This situation has pushed scientific community cope with it providing alternative solutions. Therefore, is indeed important conduct a sustainable study on recycling wastewater for particular purpose. Taking this into account, an effo...

The macromolecular composition of activated sludge (lipids, intracellular proteins and intracellular polysaccharides) was studied together with its capacity to store macromolecules such as polyhydroxybutyrate (PHB) in a conventional activated sludge system fed with synthetic sewage water at an organic load rate of 1.0 kg COD/(m(3)·d), varying the dissolved oxygen (DO) and temperature. Six DO co...