Synthesized magnetic nanoparticles coated zeolite for the adsorption of pharmaceutical compounds from aqueous solution using batch and column studies.
The contamination of fresh water with pharmaceutical and personal care products (PPCPs) has risen during the last few years. The adsorption of some PPCPs namely, Diclofenac-Na, Naproxen, Gemfibrozil and Ibuprofen from aqueous solution has been studied, magnetic nanoparticles coated zeolite (MNCZ) has been used as the adsorbent. Batch adsorption experiment was conducted to study the influences of different adsorption parameters such as contact time, solution pH and PPCPs concentrations in order to optimize the reaction conditions. The removal was favored at low pH values. Thus, as pH turns from acidic to basic conditions these compounds were less efficiently removed. The initial concentration does not appear to exert a noticeable effect on the removal efficiency of the studied PPCPs at low concentrations, but it showed less removal efficiency during high concentration of PPCPs especially for Ibuprofen. The removal of Diclofenac-Na was independent on time, while the contact time was of significant effect on the adsorption of Naproxen, Gemfibrozil and Ibuprofen even though these compounds were removed up to 95% during 10 min using MNCZ. From the isotherm adsorption study, the adsorption of PPCPs studied on MNCZ was best fitted with Freundlich isotherm equation. Pseudo-second order model providing the best fit model with the experimental data. Column adsorption study was conducted to compare the removal efficiency of MNCZ with other processes used at drinking water treatment plants (DWTPs), MNCZ showed high removal efficiency (>99%) than other used processes at DWTPs.
Key Laboratory of Yangtze River Water Environment, Ministry of Education, College of Environmental Science and Engineering, Tongji University, Shanghai, China; Soils, Water and Environment Research Institute, Agricultural Research Center, Ministry of Agricultural and Land Reclamation, Egypt.
Tamer Mohamed
TM
Salem Attia
Xia Lin
XL
Hu
Da Qiang
DQ
Yin
D000327:Adsorption; D052918:Environmental Restoration and Remediation; D007700:Kinetics; D008280:Magnetics; D008956:Models, Chemical; D053758:Nanoparticles / Q000737:chemistry*; D004364:Pharmaceutical Preparations / Q000032:analysis* / Q000737:chemistry; D014874:Water Pollutants, Chemical / Q000032:analysis* / Q000737:chemistry; D018508:Water Purification / Q000379:methods; D017641:Zeolites / Q000737:chemistry*
D004364:Pharmaceutical Preparations; D014874:Water Pollutants, Chemical; D017641:Zeolites
Adsorption isotherm equations; Drinking water treatment plants; Kinetic study; Magnetic nanoparticles coated zeolite (MNCZ); Pharmaceutical compounds (PPCPs)