Activated carbon from biochar: Influence of its physicochemical properties on the sorption characteristics of phenanthrene

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Activated carbon from biochar : Influence of its physicochemical properties on the sorption characteristics of phenanthrene. / Park, Junyeong; Hung, Ivan; Gan, Zhehong; Rojas, Orlando J.; Lim, Kwang Hun; Park, Sunkyu.

In: Bioresource Technology, Vol. 149, 12.2013, p. 383-389.

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Park, Junyeong ; Hung, Ivan ; Gan, Zhehong ; Rojas, Orlando J. ; Lim, Kwang Hun ; Park, Sunkyu. / Activated carbon from biochar : Influence of its physicochemical properties on the sorption characteristics of phenanthrene. In: Bioresource Technology. 2013 ; Vol. 149. pp. 383-389.

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@article{8f5904e019d14cb39cc36fd36522711e,
title = "Activated carbon from biochar: Influence of its physicochemical properties on the sorption characteristics of phenanthrene",
abstract = "The relationship between physicochemical properties of biochar-based activated carbons and its adsorption was investigated using an aromatic model compound, phenanthrene. Solid-state C-13 NMR analysis indicated more condensed aromatic structures when pyrolysis temperature increased or after activation process induced. The increasing aromaticity and non-protonated carbon fraction of the activated biochar treated at 300 degrees C amounted to 14.7{\%} and 24.0{\%}, respectively, compared to 7.4{\%} and 4.4{\%} for biochar treated at 700 degrees C. The surface area and pore volume were reduced with the increase in pyrolysis temperature, but increased after activation. Surface characteristics correlated with the initial sorption rate and equilibrium concentration of phenanthrene, but not with the aromaticity. Solid-state H-2 NMR for phenanthrened(10) saturated activated biochars, however, showed substantial difference in molecular mobility, which might be due to the high aromaticity of the activated biochars. Overall, these results provide an opportunity to manipulate the characteristics of biomass-based adsorbents based on the application needs. 0 2013 Elsevier Ltd. All rights reserved.",
keywords = "Biochar, Solid-state NMR, Activation Activated biochar, Phenanthrene adsorption, SOLID-STATE NMR, AROMATIC-HYDROCARBONS, AQUEOUS-SOLUTION, FAST-PYROLYSIS, COCONUT SHELL, CHARS, WOOD, AMENDMENT, DYNAMICS, REMOVAL",
author = "Junyeong Park and Ivan Hung and Zhehong Gan and Rojas, {Orlando J.} and Lim, {Kwang Hun} and Sunkyu Park",
year = "2013",
month = "12",
doi = "10.1016/j.biortech.2013.09.085",
language = "English",
volume = "149",
pages = "383--389",
journal = "Bioresource Technology",
issn = "0960-8524",

}

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TY - JOUR

T1 - Activated carbon from biochar

T2 - Influence of its physicochemical properties on the sorption characteristics of phenanthrene

AU - Park, Junyeong

AU - Hung, Ivan

AU - Gan, Zhehong

AU - Rojas, Orlando J.

AU - Lim, Kwang Hun

AU - Park, Sunkyu

PY - 2013/12

Y1 - 2013/12

N2 - The relationship between physicochemical properties of biochar-based activated carbons and its adsorption was investigated using an aromatic model compound, phenanthrene. Solid-state C-13 NMR analysis indicated more condensed aromatic structures when pyrolysis temperature increased or after activation process induced. The increasing aromaticity and non-protonated carbon fraction of the activated biochar treated at 300 degrees C amounted to 14.7% and 24.0%, respectively, compared to 7.4% and 4.4% for biochar treated at 700 degrees C. The surface area and pore volume were reduced with the increase in pyrolysis temperature, but increased after activation. Surface characteristics correlated with the initial sorption rate and equilibrium concentration of phenanthrene, but not with the aromaticity. Solid-state H-2 NMR for phenanthrened(10) saturated activated biochars, however, showed substantial difference in molecular mobility, which might be due to the high aromaticity of the activated biochars. Overall, these results provide an opportunity to manipulate the characteristics of biomass-based adsorbents based on the application needs. 0 2013 Elsevier Ltd. All rights reserved.

AB - The relationship between physicochemical properties of biochar-based activated carbons and its adsorption was investigated using an aromatic model compound, phenanthrene. Solid-state C-13 NMR analysis indicated more condensed aromatic structures when pyrolysis temperature increased or after activation process induced. The increasing aromaticity and non-protonated carbon fraction of the activated biochar treated at 300 degrees C amounted to 14.7% and 24.0%, respectively, compared to 7.4% and 4.4% for biochar treated at 700 degrees C. The surface area and pore volume were reduced with the increase in pyrolysis temperature, but increased after activation. Surface characteristics correlated with the initial sorption rate and equilibrium concentration of phenanthrene, but not with the aromaticity. Solid-state H-2 NMR for phenanthrened(10) saturated activated biochars, however, showed substantial difference in molecular mobility, which might be due to the high aromaticity of the activated biochars. Overall, these results provide an opportunity to manipulate the characteristics of biomass-based adsorbents based on the application needs. 0 2013 Elsevier Ltd. All rights reserved.

KW - Biochar

KW - Solid-state NMR

KW - Activation Activated biochar

KW - Phenanthrene adsorption

KW - SOLID-STATE NMR

KW - AROMATIC-HYDROCARBONS

KW - AQUEOUS-SOLUTION

KW - FAST-PYROLYSIS

KW - COCONUT SHELL

KW - CHARS

KW - WOOD

KW - AMENDMENT

KW - DYNAMICS

KW - REMOVAL

U2 - 10.1016/j.biortech.2013.09.085

DO - 10.1016/j.biortech.2013.09.085

M3 - Article

VL - 149

SP - 383

EP - 389

JO - Bioresource Technology

JF - Bioresource Technology

SN - 0960-8524

ER -

ID: 10398487