Removal characteristics of copper by marine macro-algae-derived chars
- Authors
- Cho, Hye Jung; Baek, Kitae; Jeon, Jong-Ki; Park, Sung Hoon; Suh, Dong Jin; Park, Young-Kwon
- Issue Date
- 2013-02-01
- Publisher
- ELSEVIER SCIENCE SA
- Citation
- CHEMICAL ENGINEERING JOURNAL, v.217, pp.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. (C) 2012 Elsevier B.V. All rights reserved.
- Keywords
- HEAVY-METAL BIOSORPTION; CATIONIC SURFACTANT; AQUEOUS-SOLUTIONS; ADSORPTION; SORPTION; BIOMASS; ACTIVATION; WATER; IONS; AS(III); HEAVY-METAL BIOSORPTION; CATIONIC SURFACTANT; AQUEOUS-SOLUTIONS; ADSORPTION; SORPTION; BIOMASS; ACTIVATION; WATER; IONS; AS(III); Macro-algae; Undaria pinnatifida; Pyrolysis; Char; Adsorption; Ion exchange; Cu
- ISSN
- 1385-8947
- URI
- https://pubs.kist.re.kr/handle/201004/128365
- DOI
- 10.1016/j.cej.2012.11.123
- Appears in Collections:
- KIST Article > 2013
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