1Department of Chemistry, University of Allahabad, Allahabad 211 002, India
2Indian Institute of Technology Kanpur, Kanpur 208016, India
Adv. Mater. Lett., 2015, 6 (1), pp 19-26
DOI: 10.5185/amlett.2015.5603
Publication Date (Web): Dec 28, 2014
Copyright © IAAM-VBRI Press
E-mail: singhvandanasingh@rediffmail.com
This study puts forward the synthesis of an excellent cadmium adsorbent having unprecedented high capacity (Qmax = 5000 mg g-1) to capture cadmium ions from synthetic cadmium solution. To synthesize the adsorbent (A700), base catalyzed polymerization of tetra ethylorthosilicate (TEOS) was conducted under the sacrificial templation effect of poly(acrylamide) grafted Cassia grandis seed gum (CG) while using H2O, TEOS and EtOH in 8:1:1: ratio (v/v). The CG inspired adsorbent was characterized by FTIR, XRD and SEM, both before and after cadmium adsorption. The adsorption parameters for the synthesized adsorbent were optimized by performing the batch adsorption studies under different pH, initial cadmium concentration, adsorbent dose, and contact time. The adsorption showed pseudo second order kinetics with a rate constant of 1.55 x 10-4 g mg-1min-1 at 450 mg mL-1 Cd(II) concentration. The thermodynamic study showed that the adsorption is endothermic and spontaneous. The adsorbent could be successfully reused for three cycles. The present adsorbent is not only very efficient in cadmium uptake; it is greener than the contemporary porous silica adsorbents derived through templation of pure synthetic polymers or surfactants. Moreover the source polysaccharide used for its synthesis is abundant and cheap. This hybrid can utilized as versatile and sustainable adsorbent for cadmium recovery from industrial wastes.
Tetraethylorthrosilicate, Cassia grandis-graft-polyacrylamide, Cd(II) adsorbent.
Perspectives on Published Energy Sources and Smart Energy Supplies
State of Art Review on Nanobubbles
Eggshell Membrane Assisted CdS Nanoparticles for Manganese Removal in Water Treatment
Green Chemistry Synthesis of Nano-Hydroxyapatite using Natural Stabilisers
Structural, Optical and Electrical Properties of CaSnO3 and Ca0.98Nd0.02Sn0.98Ti0.02O3 Synthesized using Sol-Gel Method
Phase Change Materials Reinforced with Aluminium Foam for Latent Heat Storage
Influence of Manganese and Copper Doping on Structural and Optical Properties of Chromium Oxide Nanoparticles
Understanding of intriguing metal to semiconductor transition in Ni0.5Zn0.5Fe2O4 nanoparticulates
Flaw Resistance and Mode - I Fracture Energy Redistribution in Bamboo - A Correlation
COVID-19: A Significant Revival Approach - Concurrent Case Study in India
Recent Advances in Biochar Modification for Energy Storage in Supercapacitors: A Review
Viral Evolution of Multiple Coronavirus Genomes on Genomic Index Maps
Solution Combustion Synthesis and Energy Transfer in LaMgAl11O19:Tb3+/Sm3+ Tunable Phosphor
Influence of Fe3O4 and CTABr on the Rate of Degradation of Methylene Blue by H2O2
Effect of Sulfurization Temperature on RF Sputtered MoS2 Thin Film
Fatigue Analysis for Fe-34.5Mn-l0Al-0.76C Tidal Turbine Blades using Rainflow Algorithm
Modelling for the Study of Thermoelastic Properties of Nanoparticles
Potato Starch Edible Films as Environmentally Friendly Carriers for Model Drug: In vitro Release Study