| Literature DB >> 27884673 |
Gaurav Sharma1, Mu Naushad2, Ala'a H Al-Muhtaseb3, Amit Kumar4, Mohammad Rizwan Khan2, Susheel Kalia5, Manju Bala4, Arush Sharma4.
Abstract
In this study, chitosan-crosslinked-poly (alginic acid) nanohydrogel (CN-cl-PL(AA)NHG) was synthesized by co-polymerization method. It was used an effective adsorbent for the exclusion of Cr(VI) metal ion from aqueous medium. The synthesized nanohydrogel was characterized by FTIR, SEM and TEM. The TEM images clearly indicated the appearance of smooth surface with average size of particles ranging from 30 to 80nm. The effect of different adsorption parameters like agitation time, temperature, initial metal ion concentration and adsorbent dosage was studied and optimized. The results demonstrated that the prepared chitosan-crosslinked-poly (alginic acid) nanohydrogel had high adsorption tendency for the removal of Cr(VI) from the aqueous solution. The pseudo-second-order equation represented the better adsorption kinetics for the adsorption process. The thermodynamic studies showed the adsorption of Cr(VI) onto CN-cl-PL(AA)NHG was spontaneous and chemical in nature.Entities:
Keywords: Adsorption; Alginic acid; Chitosan; Cr(VI); Kinetics; Nanohydrogel
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Year: 2016 PMID： 27884673 DOI： 10.1016/j.ijbiomac.2016.11.072
Source DB: PubMed Journal: Int J Biol Macromol ISSN： 0141-8130 Impact factor: 6.953