The pH-dependent adsorption of tributyltin to charcoals and soot

Liping Fang; Ole K. Borggaard; Helle Marcussen; Peter Engelund Holm; Hans Chr. Bruun Hansen

doi:10.1016/j.envpol.2010.08.003

The pH-dependent adsorption of tributyltin to charcoals and soot

Liping Fang, Ole K. Borggaard, Helle Marcussen, Peter Engelund Holm, Hans Chr. Bruun Hansen

19 Citations (Scopus)

Abstract

Widespread use of tributyltin (TBT) poses a serious environmental problem. Adsorption by black carbon (BC) may strongly affect its behavior. The adsorption of TBT to well characterized soot and two charcoals with specific surface area in the range of 62-111 m² g^-1 have been investigated with main focus on pH effects. The charcoals but not soot possess acidic functional groups. TBT adsorption reaches maximum at pH 6-7 for charcoals, and at pH > 6 for soot. Soot has between 1.5 and 15 times higher adsorption density (0.09-1.77 μmol m^-2) than charcoals, but charcoals show up to 17 times higher sorption affinities than soot. TBT adsorption is successfully described by a new pH-dependent dual Langmuir model considering electrostatic and hydrophobic adsorption, and pH effects on TBT speciation and BC surface charge. It is inferred that strong sorption of the TBTOH species to BC may affect TBT toxicity.

Original language	English
Journal	Environmental Pollution
Volume	158
Issue number	12
Pages (from-to)	3642-3649
Number of pages	8
ISSN	0269-7491
DOIs	https://doi.org/10.1016/j.envpol.2010.08.003
Publication status	Published - Dec 2010

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title = "The pH-dependent adsorption of tributyltin to charcoals and soot",

abstract = "Widespread use of tributyltin (TBT) poses a serious environmental problem. Adsorption by black carbon (BC) may strongly affect its behavior. The adsorption of TBT to well characterized soot and two charcoals with specific surface area in the range of 62-111 m2 g-1 have been investigated with main focus on pH effects. The charcoals but not soot possess acidic functional groups. TBT adsorption reaches maximum at pH 6-7 for charcoals, and at pH > 6 for soot. Soot has between 1.5 and 15 times higher adsorption density (0.09-1.77 μmol m-2) than charcoals, but charcoals show up to 17 times higher sorption affinities than soot. TBT adsorption is successfully described by a new pH-dependent dual Langmuir model considering electrostatic and hydrophobic adsorption, and pH effects on TBT speciation and BC surface charge. It is inferred that strong sorption of the TBTOH species to BC may affect TBT toxicity.",

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language = "English",

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T1 - The pH-dependent adsorption of tributyltin to charcoals and soot

AU - Fang, Liping

AU - Borggaard, Ole K.

AU - Marcussen, Helle

AU - Holm, Peter Engelund

AU - Hansen, Hans Chr. Bruun

PY - 2010/12

Y1 - 2010/12

N2 - Widespread use of tributyltin (TBT) poses a serious environmental problem. Adsorption by black carbon (BC) may strongly affect its behavior. The adsorption of TBT to well characterized soot and two charcoals with specific surface area in the range of 62-111 m2 g-1 have been investigated with main focus on pH effects. The charcoals but not soot possess acidic functional groups. TBT adsorption reaches maximum at pH 6-7 for charcoals, and at pH > 6 for soot. Soot has between 1.5 and 15 times higher adsorption density (0.09-1.77 μmol m-2) than charcoals, but charcoals show up to 17 times higher sorption affinities than soot. TBT adsorption is successfully described by a new pH-dependent dual Langmuir model considering electrostatic and hydrophobic adsorption, and pH effects on TBT speciation and BC surface charge. It is inferred that strong sorption of the TBTOH species to BC may affect TBT toxicity.

AB - Widespread use of tributyltin (TBT) poses a serious environmental problem. Adsorption by black carbon (BC) may strongly affect its behavior. The adsorption of TBT to well characterized soot and two charcoals with specific surface area in the range of 62-111 m2 g-1 have been investigated with main focus on pH effects. The charcoals but not soot possess acidic functional groups. TBT adsorption reaches maximum at pH 6-7 for charcoals, and at pH > 6 for soot. Soot has between 1.5 and 15 times higher adsorption density (0.09-1.77 μmol m-2) than charcoals, but charcoals show up to 17 times higher sorption affinities than soot. TBT adsorption is successfully described by a new pH-dependent dual Langmuir model considering electrostatic and hydrophobic adsorption, and pH effects on TBT speciation and BC surface charge. It is inferred that strong sorption of the TBTOH species to BC may affect TBT toxicity.

U2 - 10.1016/j.envpol.2010.08.003

DO - 10.1016/j.envpol.2010.08.003

M3 - Journal article

C2 - 20828900

SN - 0269-7491

VL - 158

SP - 3642

EP - 3649

JO - Environmental Pollution

JF - Environmental Pollution

IS - 12

ER -

The pH-dependent adsorption of tributyltin to charcoals and soot

Abstract

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