Cho, Hye Jung Baek, Kitae Jeon, Jong-Ki Park, Sung Hoon Suh, Dong Jin Park, Young-Kwon 2024-01-20T13:01:54Z 2024-01-20T13:01:54Z 2021-09-01 2013-02-01 1385-8947 https://pubs.kist.re.kr/handle/201004/128365 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. English ELSEVIER SCIENCE SA HEAVY-METAL BIOSORPTION CATIONIC SURFACTANT AQUEOUS-SOLUTIONS ADSORPTION SORPTION BIOMASS ACTIVATION WATER IONS AS(III) Removal characteristics of copper by marine macro-algae-derived chars Article 10.1016/j.cej.2012.11.123 1 CHEMICAL ENGINEERING JOURNAL, v.217, pp.205 - 211 CHEMICAL ENGINEERING JOURNAL 217 205 211 scie scopus 000316835600024 2-s2.0-84871552641 Engineering, Environmental Engineering, Chemical Engineering Article 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