Efficiency of barium removal from radioactive waste water using the combination of maghemite and titania nanoparticles in PVA and alginate beads.
In this paper, both maghemite (γ-Fe2O3) and titanium oxide (TiO2) nanoparticles were synthesized and mixed in various ratios and embedded in PVA and alginate beads. Batch sorption experiments were applied for removal of barium ions from aqueous solution under sunlight using the beads. The process has been investigated as a function of pH, contact time, temperature, initial barium ion concentration and TiO2:γ-Fe2O3 ratios (1:10, 1:60 and 1). The recycling attributes of these beads were also considered. Furthermore, the results revealed that 99% of the Ba(II) was eliminated in 150min at pH 8 under sunlight. Also, the maghemite and titania PVA-alginate beads can be readily isolated from the aqueous solution after the process and reused for at least 7 times without significant losses of their initial properties. The reduction of Ba(II) with maghemite and titania PVA-alginate beads fitted the pseudo first order and second order Langmuir-Hinshelwood (L-H) kinetic model.
Department of Bioprocess Engineering, Faculty of Chemical Engineering, UniversitiTeknologi Malaysia, UTM, Skudai, 81310 Johor Bahro, Malaysia.
Zohreh
Z
Majidnia
Department of Bioprocess Engineering, Faculty of Chemical Engineering, UniversitiTeknologi Malaysia, UTM, Skudai, 81310 Johor Bahro, Malaysia. Electronic address: ani@fkkksa.utm.my.
Ani
A
Idris
Construction Research Center (CRC), Institute for Smart Infrastructure and Innovation Construction (ISIIC), Faculty of Civil Engineering, UniversitiTeknologi Malaysia, UTM Skudai, 81310, Johor Bahru, Malaysia.
MuhdZaimiAbd
M
Majid
Construction Research Center (CRC), Institute for Smart Infrastructure and Innovation Construction (ISIIC), Faculty of Civil Engineering, UniversitiTeknologi Malaysia, UTM Skudai, 81310, Johor Bahru, Malaysia.
RosliMohamad
R
Zin
Construction Research Center (CRC), Institute for Smart Infrastructure and Innovation Construction (ISIIC), Faculty of Civil Engineering, UniversitiTeknologi Malaysia, UTM Skudai, 81310, Johor Bahru, Malaysia.
Mohanadoss
M
Ponraj
D000327:Adsorption; D000464:Alginates; D001464:Barium / Q000302:isolation & purification*; D001465:Barium Radioisotopes / Q000302:isolation & purification; D005290:Ferric Compounds; D020723:Glucuronic Acid; D006603:Hexuronic Acids; D006801:Humans; D006863:Hydrogen-Ion Concentration; D007700:Kinetics; D058185:Magnetite Nanoparticles / Q000648:ultrastructure; D053768:Metal Nanoparticles / Q000648:ultrastructure; D008855:Microscopy, Electron, Scanning; D008956:Models, Chemical; D055668:Photochemical Processes; D011142:Polyvinyl Alcohol; D011850:Radioactive Waste / Q000032:analysis*; D014025:Titanium; D062065:Wastewater / Q000737:chemistry*; D014874:Water Pollutants, Chemical / Q000302:isolation & purification*; D014875:Water Pollutants, Radioactive / Q000302:isolation & purification
D000464:Alginates; D001464:Barium; D001465:Barium Radioisotopes; D005290:Ferric Compounds; D020723:Glucuronic Acid; D006603:Hexuronic Acids; D058185:Magnetite Nanoparticles; D011142:Polyvinyl Alcohol; D011850:Radioactive Waste; D014025:Titanium; D062065:Wastewater; D014874:Water Pollutants, Chemical; D014875:Water Pollutants, Radioactive; C009495:titanium dioxide; C000499:ferric oxide
Adsorption; Barium ions; Maghemite nanoparticles; PVA–alginate beads; Photocatalysts; Titania nanoparticles