Solid-Phase Extraction of Cu2+, Cd2+ and Pb2+from Water Samples Withtetracycline Modified Cellulose Nanoparticles.

Abstract

In our study, cellulose nanoparticles customized with tetracycline were produced and characterized by several instrumental techniques such as scanning electron microscopy (SEM), elemental analysis and FTIR. The modified cellulose nanoparticles were employed for removing of and from aqueous solution. Effect of several essential parameters including temperature, pH, adsorption instances and adsorbate concentration had been examined to evaluate the optimum adsorption condition. Chemical adsorption as the rate limiting step was confirmed, where the adsorption kinetics followed the second-order kinetic model. Also, the adsorption isotherm experiments showed the best fit with Langmuir model with maximum adsorption capacities of Cu 2+ , Cd 2+ and Pb 2+with cellulose modified with tetracycline. Comparing to the solvent extraction method an analytical applications of the present method to real samples containing were used and the results were good satisfied.Copy Right, IJAR, 2016,. All rights reserved.

Internalization of (bis)phosphonate-modified cellulose nanocrystals by human osteoblast cells

“…The site-selective periodate oxidation on native CNCs allows cleavage of the C2-C3 bond of the glucopyranose ring, converting the respective vicinal hydroxyl into two aldehyde groups (Hlady and Buijs 1996;Kenawy et al 2015), while leaving the bulk material crystallinity unchanged (Grate et al 2015). The CNCs' modification with Aln and ApA molecules [presented in Scheme 1, according to the literature (Dash et al 2012)] was carried out using a Shiff-base coupling reaction between (bis)phosphonate amine (in ApA or Aln) and cellulose (CNC) aldehyde groups which are formed during the (periodate) oxidation process.…”