Chitosan grafted SiO 2 -Fe 3 O 4 nanoparticles for removal of antibiotics from water

The antibiotic wastes in environment are very dangerous for human being because of the spread of epidemics due to increasing of the antibiotic-resistant bacteria. For reducing the proliferation of these bacteria, an environmental-friendly, cheap and non-toxic adsorbent, chitosan-grafted SiO /Fe O ,...

Full description

Saved in:
Bibliographic Details
Published in:Environmental science and pollution research international 2018-12, Vol.25 (36), p.36661
Main Authors: Danalıoğlu, Selen Tuğba, Kerkez Kuyumcu, Özge, Abdel Salam, Mohamed, Bayazit, Şahika Sena
Format: Article
Language:English
Subjects:
Adsorption
Anti-Bacterial Agents - analysis
Chitosan - chemistry
Ferrosoferric Oxide - chemistry
Kinetics
Models, Theoretical
Nanoparticles - chemistry
Silicon Dioxide - chemistry
Waste Water - chemistry
Water Pollutants, Chemical - analysis
Water Purification - methods
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The antibiotic wastes in environment are very dangerous for human being because of the spread of epidemics due to increasing of the antibiotic-resistant bacteria. For reducing the proliferation of these bacteria, an environmental-friendly, cheap and non-toxic adsorbent, chitosan-grafted SiO /Fe O , was developed in this study. The chitosan-grafted SiO /Fe O (Chi-SiO /Fe O ) nanoparticles were prepared and characterised by different physical and chemical techniques such as X-ray diffraction spectroscopy (XRD), Fourier transform infrared spectroscopy (FTIR), N adsorption-desorption isotherms (BET), thermogravimetric analysis (TGA), vibrating sample magnetometer (VSM), scanning electron microscopy (SEM) and zeta-potential analysis. The prepared nanoparticles were used for ciprofloxacin (CPX) adsorption from water. The nonlinear Langmuir and Freundlich isotherms were applied to experimental data. And Langmuir isotherm showed the best fit. The nonlinear pseudo-first-order and pseudo-second-order kinetic models and Weber-Morris intraparticle diffusion model were applied to kinetic data. The adsorption process followed the pseudo-second-order kinetic model. And the rate-limiting step was intraparticle diffusion step. The most suitable eluent for CPX desorption was determined as phosphate buffer solution rather than ethanol, and NaCl solution. It desorbed the 100% of CPX solution in 5 h. Graphical abstract ᅟ.
ISSN:1614-7499
DOI:10.1007/s11356-018-3573-y