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Isotherm analyses for single component and multi‐component metal sorption onto lignite
Author(s) -
Allen Stephen J.,
Brown Pauline A.
Publication year - 1995
Publication title -
journal of chemical technology and biotechnology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.64
H-Index - 117
eISSN - 1097-4660
pISSN - 0268-2575
DOI - 10.1002/jctb.280620103
Subject(s) - sorption , freundlich equation , adsorption , component (thermodynamics) , copper , langmuir , zinc , metal , cadmium , aqueous solution , chemistry , metal ions in aqueous solution , saturation (graph theory) , inorganic chemistry , thermodynamics , organic chemistry , mathematics , combinatorics , physics
The adsorption of the three metal ions, copper, cadmium and zinc in single component and multi‐component mixtures in aqueous solutions by lignite is reported. A comparison is made between the single component saturation uptake and the multi‐component uptakes. The isotherms indicate a competitive uptake with copper being preferentially absorbed by the lignite in multi‐component solutions. The isotherms are plotted to obtain the Langmuir constants, the Freundlich constants and the Redlich–Peterson constants. Lignite is shown to possess an affinity for the metal ions which make its use as an adsorbent a possible alternative to the use of more expensive activated carbons.