Removal characteristics of copper by marine macro-algae-derived chars

Title
Removal characteristics of copper by marine macro-algae-derived chars
Authors
조혜정배기태전종기박성훈서동진박영권
Keywords
Macro-algae; Undaria pinnatifida; Pyrolysis; Char; Adsorption; Ion exchange; Cu
Issue Date
2013-02
Publisher
Chemical engineering journal
Citation
VOL 217, 205-211
Abstract
The char derived from the fast pyrolysis of macro-algae biomass, a brown alga Undaria pinnatifida, proved to be useful for the removal or recovery of copper from aqueous solutions. Even at a low dose of 0.1 g char/L, a high adsorption capacity was obtained. Physical activation with steam enhanced the adsorption of Cu, but chemical activation with a KOH solution decreased the adsorption capacity. A pseudo-second order kinetic model was used to explain the adsorption kinetics. The physically-activated char showed a Langmuir type of isotherm, and had a maximum adsorption capacity of 125.85 mg Cu/g. Based on the adsorption capacity, even at a low copper concentration, the char derived from the fast pyrolysis of U. pinnatifida is a valuable adsorbent for recovering copper from aqueous solutions.
URI
http://pubs.kist.re.kr/handle/201004/44625
ISSN
13858947
Appears in Collections:
KIST Publication > Article
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