Recovery of Acrylic Acid Using Calcium Peroxide Nanoparticles: Synthesis, Characterisation, Batch Study, Equilibrium, and Kinetics

Chemical and Biochemical Engineering Quarterly

V. R. Dhongde¹  K. L. Wasewar¹  S. S. Madan¹  B. S. De¹  A. Gomase² 

[1] Advanced Separation and Analytical Laboratory (ASAL),Department of Chemical Engineering, Visvesvaraya National Institute of Technology (VNIT),Nagpur (M.S) 440010, India;Department of Fibres and Textile Processing Technology, Instituteof Chemical Engineering (ICT), Mumbai (M.S) 400019, India;

关键词: acrylic acid;    adsorption;    calcium peroxide nanoparticles;    equilibrium;    kinetics;    batch study;   

DOI  :  10.15255/CABEQ.2016.1055b

来源: DOAJ

【 摘 要 】

Recovery of acrylic acid from aqueous solution using low-cost CaO2 nanoparticles was investigated. CaO2 nanoparticles were synthesized by co-precipitation technique and characterised using XRD and FTIR. A mechanism was proposed for adsorption of acrylic acid onto CaO2 nanoparticles based on FTIR analysis. Acrylic acid recovery is highly dependent on contact time, CaO2 nanoparticle dosage, initial acrylic concentration, and temperature. Langmuir, Freundlich, Dubinin-Radushkevich, Tempkin, Hill, Redlich-Peterson, Sips and Toth isotherms were used and well represented by Redlich-Peterson isotherm (R2 = 0.9998) as compared to other isotherms. Kinetic studies revealed pseudo-second-order kinetics (k2 = 1.962·10–4 g mg–1 min–1) for adsorption of acrylic acid onto CaO2 nanoparticles. CaO2 nanoparticles exhibited high acrylic acid recovery over varied concentration ranges. The acrylic acid can be regenerated by desorption from the surface of adsorbent and utilised for numerous applications. The presented results may be useful for the design of adsorption system using nanoparticles, which can be extended to other systems.

【 授权许可】

Unknown