NDLI: Equilibrium and Kinetic Study of Congo Red Adsorption onto Lignin-Based Activated Carbons

Content Provider	Springer Nature Link
Author	Cotoruelo, Luis M. Marqués, María D. Díaz, Francisco J. Rodríguez Mirasol, José Rodríguez, Juan J. Cordero, Tomás
Copyright Year	2009
Abstract	The adsorption of Congo Red (CR) from aqueous solutions has been studied using various activated carbons prepared by us from eucalyptus kraft lignin. The adsorption isotherms were complex; nevertheless their data were fitted to the Langmuir and BET models. ΔG values suggested spontaneous nature of the adsorption processes. The high amounts adsorbed were studied as a function of the operating variables (pH, temperature) as well as the specific surface properties (zero-point charge, burn-off, and porosity) of the activated carbons. The diffusion coefficients have been estimated on the basis of an internal diffusion controlling mechanism for the net adsorption rate. Therefore, the obtained results in the present study should be of utility for the preparation of new adsorbents and they should make a contribution to design the adsorption equipment. Technical, economical, and environmental concerns have been considered in the purpose of the present study for water purification where that is polluted by anionic dyes.
Starting Page	573
Ending Page	590
Page Count	18
File Format	PDF
ISSN	01693913
Journal	Transport in Porous Media
Volume Number	83
Issue Number	3
e-ISSN	15731634
Language	English
Publisher	Springer Netherlands
Publisher Date	2009-09-08
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Congo Red Activated carbon Adsorption Thermodynamics Kinetics Classical Continuum Physics Hydrogeology Civil Engineering Industrial Chemistry/Chemical Engineering Geotechnical Engineering
Content Type	Text
Resource Type	Article
Subject	Catalysis

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