Adsorption

, Volume 19, Issue 1, pp 161–188

A review on reactive adsorption for potential environmental applications

Authors

    • Department of Chemical EngineeringMalaviya National Institute of Technology
  • Raj K. Vyas
    • Department of Chemical EngineeringMalaviya National Institute of Technology
  • Kailash Singh
    • Department of Chemical EngineeringMalaviya National Institute of Technology
Article

DOI: 10.1007/s10450-012-9436-9

Cite this article as:
Sharma, M., Vyas, R.K. & Singh, K. Adsorption (2013) 19: 161. doi:10.1007/s10450-012-9436-9

Abstract

The aim of this paper is to present a critical review on reactive adsorption processes. The impact of surface modification on adsorption behavior of various adsorbents in context of reactive adsorption has been reviewed. Various characterization and detection methods involved to access and verify the surface morphology of adsorbent, presence of surface functionalities on adsorbent, and concentration of adsorbate have been concisely presented. The paper also delves into the inadequately researched grey areas of reactive adsorption which require further attention such as modeling and adsorbent regeneration so as to make the process more economic. The applicability of reactive adsorption to ensure a cleaner environment has also been briefly discussed. This article also underlines the areas, in which reactive adsorption can be implemented on a pilot scale.

Keywords

Reactive adsorptionAdsorbent modificationModelingAdsorbent regenerationProcess intensification

Abbreviations

ci

fluid phase concentration in interparticle voids, mol/m3

cp,i

fluid phase concentration in pores, mol/m3

cs,i

fluid concentration in pores at the close vicinity of pore surface, mol/m3

dp

particle diameter, m

De

effective diffusion coefficient in pores, m2/s

k

reaction rate constant, 1/s

ka

adsorption rate constant, m/s

kc

mass transfer coefficient, m/s

K

adsorption linear equilibrium constant

NW,i

mass flux, mol/(m2 s)

qi

concentration in the solid phase, mol/m3

r

radial coordinate, m

r

rate of homogeneous reaction, mol/(m3 s)

rS

rate of heterogeneous reaction, mol/(m3 s)

SP,i

rate of adsorption (adsorption + reaction), mol/(m3 s)

t

time, s

u

interstitial fluid velocity, m/s

x

axial coordinate, m

ε

bed porosity

εp

particle porosity

ν

stoichiometric coefficient

Ψ

kinetic function

Copyright information

© Springer Science+Business Media New York 2012