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dc.contributor.authorSulaiman, Saleh
dc.contributor.authorKhamis, Mustafa
dc.contributor.authorKaraman, Rafik
dc.contributor.authorBufo, Sabino
dc.contributor.authorScrano, Laura
dc.description.abstractStability and removal of dexamethasone sodium phosphate (DSP) from wastewater produced at Al-Quds University Campus were investigated. Kinetic studies in both pure water and wastewater coming from secondary treatment (activated sludge) demonstrated that the anti-inflammatory DSP underwent degradation to its hydrolytic derivative, dexamethasone, in both media. The first-order hydrolysis rate of DSP in activated sludge at 25◦C (3.80 × 10−6 s−1) was about 12-fold larger than in pure water (3.25 × 10−7 s−1). The overall performance of the wastewater treatment plant (WWTP) installed in the University Campus was also assessed showing that 90% of spiked DSP was removed together with its newly identified metabolites by the ultra-filtration (UF) system, which consists of a UF hollow fibre (HF) with a 100-kDa cutoff membrane as the prepolishing stage for the UF spiral wound with a 20-kDa cutoff membrane. In testing other technologies, the effectiveness of adsorption and filtration by micelle–clay (MC) preparation for removing DSP was ascertained in comparison with activated charcoal. Batch adsorption in aqueous suspensions of the MC composite and activated carbon was well described by Langmuir isotherms showing the best results for MC material. Filtration of DSP water solutions demonstrated a significant advantage of columns filled in with a mixture of sand and MC complex in comparison with activated carbon/sand filters
dc.publisherTaylor & Francisen_US
dc.subject.lcshDexamethasone sodium phosphate
dc.subject.lcshSewage - Purification
dc.subject.lcshWater - Purification - Treatment
dc.subject.lcshCarbon, Activated
dc.subject.lcshSewage -- Purification -- Activated sludge process.
dc.titleStability and removal of dexamethasone sodium phosphate from wastewater using modified claysen_US
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