Zeinab Salehi

[ 1 ] - Evaluating the Effect of Graphite Source and Operating Conditions on the Synthesis of Graphene Oxide

In this research graphene oxide was synthesized by two methods. These methods were achieved by changing the improved Hummers’ and modified Hummers’ methods. Structure of graphene oxide was characterized by scanning electron microscopy (SEM) images, X-ray diffraction (XRD) patterns, Raman spectroscopy and Fourier transform infrared (FTIR) spectra. According to SEM image, the thickness of graphen...

[ 2 ] - Biodegradation Modeling of Nitrophenolic Pollutant in a Slurry Bubble Reactor

Biodegradation kinetics of 4-nitrophenol (PNP) in aqueous solution by a gram negative soil bacterium, Ralstoniaeutropha was firstly studied in a small scale batch reactor. The degradation of PNP was evaluated at initial PNP concentrations ranging from 3 mg/L to 14 mg/L. The rate of PNP consumption by the bacterium culture was modeled using Monod and Contois kinetics in batch condition. PNP degr...

[ 3 ] - SPION Conjugated Curcumin Nano-Imaging Probe: Synthesis and Bio-Physical Evaluation

In this work, we investigate the loading and conjugation of Curcumin on oleic acid (OA) and citric acid (CA) functionalized iron oxide nanoparticles and its applications in improving contrast in MRI. Magnetic iron oxide nanoparticles (Fe3O4, MNPs) synthesized using the co-precipitation method and characterized by XRD, DLS, FT-IR, VSM and SEM. FT-IR results confirmed functionalization with oleic...

[ 4 ] - SPION Conjugated Curcumin Nano-Imaging Probe: Synthesis and Bio-Physical Evaluation

In this work, we investigate the loading and conjugation of Curcumin on oleic acid (OA) and citric acid (CA) functionalized iron oxide nanoparticles and its applications in improving contrast in MRI. Magnetic iron oxide nanoparticles (Fe3O4, MNPs) synthesized using the co-precipitation method and characterized by XRD, DLS, FT-IR, VSM and SEM. FT-IR results confirmed functionalization with oleic...

[ 5 ] - Optimized Method for Curcumin Separation from Turmeric Oleoresin

In this work, a novel and modified method for the solvent purification of Curcumin is presented, a composite of normal hexane & 2-propanol solvents was used to separate the fat content and other impurities. The process was modeled considering the response surface methodology as described by the central composite design. The adjusted R-squared was 0.9443 indicating the variation betwe...