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

Hye Jung Cho; Kitae Baek; Jong Ki Jeon; Sung Hoon Park; Dong Jin Suh; Young Kwon Park

doi:10.1016/j.cej.2012.11.123

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

Hye Jung Cho, Kitae Baek, Jong Ki Jeon, Sung Hoon Park, Dong Jin Suh, Young Kwon Park

School of Environmental Engineering

Research output: Contribution to journal › Article › peer-review

69 Scopus citations

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.

Original language	English
Pages (from-to)	205-211
Number of pages	7
Journal	Chemical Engineering Journal
Volume	217
DOIs	https://doi.org/10.1016/j.cej.2012.11.123
State	Published - 1 Feb 2013

Keywords

Adsorption
Char
Cu
Ion exchange
Macro-algae
Pyrolysis
Undaria pinnatifida

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1016/j.cej.2012.11.123

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title = "Removal characteristics of copper by marine macro-algae-derived chars",

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.",

keywords = "Adsorption, Char, Cu, Ion exchange, Macro-algae, Pyrolysis, Undaria pinnatifida",

author = "Cho, {Hye Jung} and Kitae Baek and Jeon, {Jong Ki} and Park, {Sung Hoon} and Suh, {Dong Jin} and Park, {Young Kwon}",

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T1 - Removal characteristics of copper by marine macro-algae-derived chars

AU - Cho, Hye Jung

AU - Baek, Kitae

AU - Jeon, Jong Ki

AU - Park, Sung Hoon

AU - Suh, Dong Jin

AU - Park, Young Kwon

PY - 2013/2/1

Y1 - 2013/2/1

N2 - 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.

AB - 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.

KW - Adsorption

KW - Char

KW - Cu

KW - Ion exchange

KW - Macro-algae

KW - Pyrolysis

KW - Undaria pinnatifida

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DO - 10.1016/j.cej.2012.11.123

M3 - Article

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SN - 1385-8947

VL - 217

SP - 205

EP - 211

JO - Chemical Engineering Journal

JF - Chemical Engineering Journal

ER -

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

Abstract

Keywords

UN SDGs

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