Decontamination of ofloxacin: optimization of removal process onto sawdust using response surface methodology

AbstractOfloxacin is one of the most used fluoroquinolones, a potent broad spectrum antibiotic class; it is also included in pharmaceutically active compounds that are considered as environmental pollutants. To clean the water systems sorption has been found as an effective way to remove these pollutants. Present study demonstrates the effect of different sawdust treatments on removal of ofloxacin from aqueous solutions. The sorption of ofloxacin by treated sawdust has been optimized by response surface methodology using central composite design. Set of 18 experiments was used and factors as pH, amount of sorbent, contact time, and concentration of sorbate were considered the critical factors to be studied for removal. HCl-treated sawdust was found to have maximum removal efficiency (96%) with the sorption capacity of 47 μmol g−1 as compared to other treated sorbents. Amount of sorbent have significantly positive impact on the removal for all three treated sorbents whereas concentration of sorbate has non...

[1]  Xing Xu,et al.  Equilibrium and kinetic adsorption study of the adsorptive removal of Cr(VI) using modified wheat residue. , 2010, Journal of colloid and interface science.

[2]  D. Barceló,et al.  Development of a multi-residue analytical methodology based on liquid chromatography-tandem mass spectrometry (LC-MS/MS) for screening and trace level determination of pharmaceuticals in surface and wastewaters. , 2006, Talanta.

[3]  D. Hooper,et al.  Fluoroquinolone antimicrobial agents. , 1991, Clinical microbiology reviews.

[4]  Muhammad Aqeel Ashraf,et al.  Study of modern nano enhanced techniques for removal of dyes and metals , 2014 .

[5]  M. L. Rahman,et al.  Preparation of mesoporous SBA-16 silica-supported biscinchona alkaloid ligand for the asymmetric dihydroxylation of olefins , 2014 .

[6]  Lu Lv,et al.  Critical review in adsorption kinetic models , 2009 .

[7]  Jian-hui Sun,et al.  Highly efficient degradation of ofloxacin by UV/Oxone/Co2+ oxidation process , 2012, Environmental Science and Pollution Research.

[8]  Najma Memon,et al.  Sawdust: A green and economical sorbent for thallium removal , 2008 .

[9]  Geert Boeije,et al.  Chemical fate prediction for use in geo-referenced environmental exposure assessment , 1999 .

[10]  Klaus Kümmerer,et al.  Antibiotics in the aquatic environment--a review--part I. , 2009, Chemosphere.

[11]  E. Hapeshi,et al.  Drugs degrading photocatalytically: Kinetics and mechanisms of ofloxacin and atenolol removal on titania suspensions. , 2010, Water research.

[12]  M. Bezerra,et al.  Response surface methodology (RSM) as a tool for optimization in analytical chemistry. , 2008, Talanta.

[13]  M. Hanif,et al.  Kinetic and thermodynamic aspects of Cu(II) and Cr(III) removal from aqueous solutions using rose waste biomass. , 2009, Journal of hazardous materials.

[14]  Vera Homem,et al.  Degradation and removal methods of antibiotics from aqueous matrices--a review. , 2011, Journal of environmental management.

[15]  Siuli Mukhopadhyay,et al.  Response surface methodology , 2010 .

[16]  W. Weber,et al.  Kinetics of Adsorption on Carbon from Solution , 1963 .

[17]  W. Arnold,et al.  Direct photochemistry of three fluoroquinolone antibacterials: norfloxacin, ofloxacin, and enrofloxacin. , 2013, Water research.

[18]  J. Peterson,et al.  Interaction of the fluoroquinolone antibiotic, ofloxacin, with titanium oxide nanoparticles in water: adsorption and breakdown. , 2012, The Science of the total environment.

[19]  Hua-ming Li,et al.  Macroporous polystyrene resins as adsorbents for the removal of tetracycline antibiotics from an aquatic environment , 2014 .

[20]  S. Kansal,et al.  Removal of ofloxacin from aqueous phase using Ni-doped TiO2 nanoparticles under solar irradiation. , 2014, Journal of nanoscience and nanotechnology.

[21]  Shuai Guo,et al.  Sunlight responsive BiVO4photocatalyst: Effects of pH on L-cysteine-assisted hydrothermal treatment and enhanced degradation of ofloxacin , 2011 .

[22]  H. A. Okeri,et al.  Analytical profile of the fluoroquinolone antibacterials. I. Ofloxacin , 2008 .

[23]  M. Crespo-Alonso,et al.  Biomass against emerging pollution in wastewater: Ability of cork for the removal of ofloxacin from aqueous solutions at different pH , 2013 .