title: Ibuprofen removal from aqueous solution by in situ electrochemically generated ferrate(VI): proof-of-principle.
abstract: The possibility of removing pharmaceuticals from aqueous solutions was examined using ibuprofen (Ibu) oxidation as an example, using in situ electrochemically synthesized ferrate(VI), a strong oxidant and coagulant, with forming of non-harmful byproducts. A solution of ibuprofen of 206 mg/L in 0.1 M phosphate buffer solution was treated with different amounts of fresh, electrochemically synthesized ferrate(VI). The changes of ibuprofen concentration in samples were determined using a UV-Vis spectrophotometer. The extent of mineralization was estimated using the changes in chemical oxygen demand (COD) values and total organic carbon (TOC) values of test samples. The largest reduction of the concentration of Ibu (41.75%) was obtained by adding 69.2 mg/L ferrate(VI) as Fe (Ibu: Fe = 1: 0.34). An effective removal of ibuprofen from aqueous solutions was recorded up to 68% and it can be done by using ferrate(VI) in the ratio Ibu: Fe = 1:3 as Fe. The possibility of ibuprofen removal by ferrate(VI) was confirmed by COD and TOC results, which demonstrated reduction up to 65% and 63.6%, respectively.
authors.affiliation: IHIS Techno-experts d.o.o, Research and Development Center, Batajnički put 23, Belgrade, Serbia E-mail: mimosa@eunet.rs.
authors.forename: Ljiljana
authors.initials: L
authors.lastname: Nikolić-Bujanović
authors.affiliation: IHIS Techno-experts d.o.o, Research and Development Center, Batajnički put 23, Belgrade, Serbia E-mail: mimosa@eunet.rs.
authors.forename: Milan
authors.initials: M
authors.lastname: Čekerevac
authors.affiliation: IHIS Techno-experts d.o.o, Research and Development Center, Batajnički put 23, Belgrade, Serbia E-mail: mimosa@eunet.rs.
authors.forename: Milena
authors.initials: M
authors.lastname: Tomić
authors.affiliation: IHIS Techno-experts d.o.o, Research and Development Center, Batajnički put 23, Belgrade, Serbia E-mail: mimosa@eunet.rs.
authors.forename: Mladen
authors.initials: M
authors.lastname: Zdravković
mesh_terms: D057919:Biological Oxygen Demand Analysis; D055664:Electrochemical Techniques; D007052:Ibuprofen / Q000302:isolation & purification*; D007501:Iron / Q000737:chemistry*; D016877:Oxidants; D010084:Oxidation-Reduction; D014874:Water Pollutants, Chemical / Q000302:isolation & purification*
chemical_list: D016877:Oxidants; D014874:Water Pollutants, Chemical; C017311:ferrate ion; D007501:Iron; D007052:Ibuprofen