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

Authors
Cho, Hye JungBaek, KitaeJeon, Jong-KiPark, Sung HoonSuh, Dong JinPark, 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
Files in This Item:
There are no files associated with this item.
Export
RIS (EndNote)
XLS (Excel)
XML

qrcode

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

BROWSE