Competitive adsorption of heavy metals onto sesame straw biochar in aqueous solutions

Jong Hwan Park; Yong Sik Ok; Seong Heon Kim; Ju Sik Cho; Jong Soo Heo; Ronald D. Delaune; Dong Cheol Seo

doi:10.1016/j.chemosphere.2015.05.093

Competitive adsorption of heavy metals onto sesame straw biochar in aqueous solutions

Jong Hwan Park, Yong Sik Ok, Seong Heon Kim, Ju Sik Cho, Jong Soo Heo, Ronald D. Delaune, Dong Cheol Seo

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

291 Citations (Scopus)

Abstract

Objective of this research was to evaluate adsorption of heavy metals in mono and multimetal forms onto sesame straw biochar (SSB). Competitive sorption of metals by SSB has never been reported previously. The maximum adsorption capacities (mgg^-1) of metals by SSB were in the order of Pb (102)≫Cd (86){between}Cr (65)>Cu (55){between}Zn (34) in the monometal adsorption isotherm and Pb (88){between}Cu (40){between}Cr (21)>Zn (7)≥Cd (5) in the multimetal adsorption isotherm. Based on data obtained from the distribution coefficients, Freundlich and Langmuir adsorption models, and three-dimensional simulation, multimetal adsorption behaviors differed from monometal adsorption due to competition. Especially, during multimetal adsorption, Cd was easily exchanged and substituted by other metals. Further competitive adsorption studies are necessary in order to accurately estimate the heavy metal adsorption capacity of biochar in natural environments.

Original language	English
Pages (from-to)	77-83
Number of pages	7
Journal	Chemosphere
Volume	142
DOIs	https://doi.org/10.1016/j.chemosphere.2015.05.093
Publication status	Published - 2016 Jan 1
Externally published	Yes

Keywords

Biochar
Competitive adsorption
Freundlich isotherm
Langmuir isotherm
Sesame straw
Three-dimension simulation

ASJC Scopus subject areas

Environmental Chemistry
Chemistry(all)

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title = "Competitive adsorption of heavy metals onto sesame straw biochar in aqueous solutions",

abstract = "Objective of this research was to evaluate adsorption of heavy metals in mono and multimetal forms onto sesame straw biochar (SSB). Competitive sorption of metals by SSB has never been reported previously. The maximum adsorption capacities (mgg-1) of metals by SSB were in the order of Pb (102)≫Cd (86){between}Cr (65)>Cu (55){between}Zn (34) in the monometal adsorption isotherm and Pb (88){between}Cu (40){between}Cr (21)>Zn (7)≥Cd (5) in the multimetal adsorption isotherm. Based on data obtained from the distribution coefficients, Freundlich and Langmuir adsorption models, and three-dimensional simulation, multimetal adsorption behaviors differed from monometal adsorption due to competition. Especially, during multimetal adsorption, Cd was easily exchanged and substituted by other metals. Further competitive adsorption studies are necessary in order to accurately estimate the heavy metal adsorption capacity of biochar in natural environments.",

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AU - Park, Jong Hwan

AU - Ok, Yong Sik

AU - Kim, Seong Heon

AU - Cho, Ju Sik

AU - Heo, Jong Soo

AU - Delaune, Ronald D.

AU - Seo, Dong Cheol

PY - 2016/1/1

Y1 - 2016/1/1

N2 - Objective of this research was to evaluate adsorption of heavy metals in mono and multimetal forms onto sesame straw biochar (SSB). Competitive sorption of metals by SSB has never been reported previously. The maximum adsorption capacities (mgg-1) of metals by SSB were in the order of Pb (102)≫Cd (86){between}Cr (65)>Cu (55){between}Zn (34) in the monometal adsorption isotherm and Pb (88){between}Cu (40){between}Cr (21)>Zn (7)≥Cd (5) in the multimetal adsorption isotherm. Based on data obtained from the distribution coefficients, Freundlich and Langmuir adsorption models, and three-dimensional simulation, multimetal adsorption behaviors differed from monometal adsorption due to competition. Especially, during multimetal adsorption, Cd was easily exchanged and substituted by other metals. Further competitive adsorption studies are necessary in order to accurately estimate the heavy metal adsorption capacity of biochar in natural environments.

AB - Objective of this research was to evaluate adsorption of heavy metals in mono and multimetal forms onto sesame straw biochar (SSB). Competitive sorption of metals by SSB has never been reported previously. The maximum adsorption capacities (mgg-1) of metals by SSB were in the order of Pb (102)≫Cd (86){between}Cr (65)>Cu (55){between}Zn (34) in the monometal adsorption isotherm and Pb (88){between}Cu (40){between}Cr (21)>Zn (7)≥Cd (5) in the multimetal adsorption isotherm. Based on data obtained from the distribution coefficients, Freundlich and Langmuir adsorption models, and three-dimensional simulation, multimetal adsorption behaviors differed from monometal adsorption due to competition. Especially, during multimetal adsorption, Cd was easily exchanged and substituted by other metals. Further competitive adsorption studies are necessary in order to accurately estimate the heavy metal adsorption capacity of biochar in natural environments.

KW - Biochar

KW - Competitive adsorption

KW - Freundlich isotherm

KW - Langmuir isotherm

KW - Sesame straw

KW - Three-dimension simulation

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Competitive adsorption of heavy metals onto sesame straw biochar in aqueous solutions

Abstract

Keywords

ASJC Scopus subject areas

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