Physiochemical aspects for the adsorption behavior of sodium carboxymethyl cellulose onto mesoporous granular fine quartz surface from its aqueous solutions

ABSTRACT

The present study focused onto adsorptive properties and nature of the interaction between sodiumcarboxymethylcellulose (NaCMC) and mesoporous granular fine quartz (MGFQ) applying various in-depth characterization techniques, adoption isotherm models including statistical aspects and operation variables. The physiochemical parameters of MGFQ such as specific surface area (S_BET)=11.34 m²/g, pore volume (Vp)=0.09 cm³/g, total pore volume (Vtp)=0.09 cm³/g, mean pore diameter=32.52nm were determined. The thermal result revealed that NaCMC could be used at moderate temperature (251°C), which was suitable for its application. The equilibrium isotherm data were fitted with Langmuir, Freundlich, Temkin and Jovanovic model of adsorption and compered by linear determination coefficient (R²), obeyed the order as Freundlich (R²=0.9984)> Langmuir (R²=0.9194)>Temkin (R²=0.8899)>Jovanovic (R²=0.8709). The infra-red spectral changes in the region 1104cm⁻¹ and 1076cm⁻¹ suggested that NaCMC accumulation onto MGFQ was stabilized by H-bonding and some other weak noncovalent interactions depending on the solution optimized conditions.

KEYWORDS:

• Adsorption
• physiochemical aspects
• thermodynamic parameters
• hydrogen bonding

6. Acknowledgements

The authors are thankful to University Sophisticated Instrumental Centre and Sophisticated Instrumental Lab, Department of Chemistry, Babasaheb Bhimrao Ambedkar University (A Central University), Lucknow for SEM, pXRD, and BET surface characterization facility, respectively. The financial support to Ashok Kumar from University Grants Commission, New Delhi (173/Conf./DAC/BBAU, 30/09/2016) is gratefully acknowledged.

Additional information

Funding

This work was supported by the University Grants Commission, New Delhi [173/Conf./DAC/BBAU, 30/09/2016].