Single and competitive adsorption of OMPs by carbon nanotubes - Mechanism and fitting models

Gabriela Kamińska; Mariusz Dudziak; Jolanta Bohdziewicz; Edyta Kudlek

doi:10.1051/e3sconf/20172200076

Single and competitive adsorption of OMPs by carbon nanotubes - Mechanism and fitting models

Department of Water and Wastewater Engineering (RIE/RIE4)

Research output: Contribution to journal › Conference article › peer-review

1 Citation (Scopus)

Abstract

The adsorption of three organic micropollutants (diclofenac - DFN, pentachlorophenol - PCP and octylphenol - OP) on two kinds of carbon nanotubes (single walled carbon nanotubes - SWCNT and single walled carbon nanotubes with amine group - SWCNT-NH₂) was investigated, in single and bicomponent solution at pH 5. SWCNT-NH₂ had three times lower specific surface area than SWCNT. Significant differences were observed in sorption capacity of SWCNT and SWCNT-NH₂ for given chemicals. The sorption uptake changes in the following order: OP > PCP > DFN for SWCNT and DFN > PCP > OP for SWCNT-NH₂. A few times higher adsorption of OP on SWCNT came from low OP solubility in water in comparison to PCP and DFN. While, higher adsorption of DFN and PCP on SWCNT-NH₂ was a result of electrostatic attraction between dissociated form of these chemicals and positively charged SWCNT-NH₂ at pH 5. In adsorption from bicomponent solution, significant competition was observed between PCP and DFN due to similar adsorption mechanism on SWCNT-NH₂. Opposite tendency was observed for SWCNT, DFN did not greatly affect adsorption of PCP and OP since they were very easily absorbable by sigma-sigma interaction.

Original language	English
Article number	00076
Journal	E3S Web of Conferences
Volume	22
DOIs	https://doi.org/10.1051/e3sconf/20172200076
Publication status	Published - 7 Nov 2017
Event	International Conference on Advances in Energy Systems and Environmental Engineering, ASEE 2017 - Wroclaw, Poland Duration: 2 Jul 2017 → 5 Jul 2017

ASJC Scopus subject areas

General Environmental Science
General Energy
General Earth and Planetary Sciences

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title = "Single and competitive adsorption of OMPs by carbon nanotubes - Mechanism and fitting models",

abstract = "The adsorption of three organic micropollutants (diclofenac - DFN, pentachlorophenol - PCP and octylphenol - OP) on two kinds of carbon nanotubes (single walled carbon nanotubes - SWCNT and single walled carbon nanotubes with amine group - SWCNT-NH2) was investigated, in single and bicomponent solution at pH 5. SWCNT-NH2 had three times lower specific surface area than SWCNT. Significant differences were observed in sorption capacity of SWCNT and SWCNT-NH2 for given chemicals. The sorption uptake changes in the following order: OP > PCP > DFN for SWCNT and DFN > PCP > OP for SWCNT-NH2. A few times higher adsorption of OP on SWCNT came from low OP solubility in water in comparison to PCP and DFN. While, higher adsorption of DFN and PCP on SWCNT-NH2 was a result of electrostatic attraction between dissociated form of these chemicals and positively charged SWCNT-NH2 at pH 5. In adsorption from bicomponent solution, significant competition was observed between PCP and DFN due to similar adsorption mechanism on SWCNT-NH2. Opposite tendency was observed for SWCNT, DFN did not greatly affect adsorption of PCP and OP since they were very easily absorbable by sigma-sigma interaction.",

author = "Gabriela Kami{\'n}ska and Mariusz Dudziak and Jolanta Bohdziewicz and Edyta Kudlek",

note = "Publisher Copyright: {\textcopyright} The Authors, published by EDP Sciences, 2017.; International Conference on Advances in Energy Systems and Environmental Engineering, ASEE 2017 ; Conference date: 02-07-2017 Through 05-07-2017",

year = "2017",

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T1 - Single and competitive adsorption of OMPs by carbon nanotubes - Mechanism and fitting models

AU - Kamińska, Gabriela

AU - Dudziak, Mariusz

AU - Bohdziewicz, Jolanta

AU - Kudlek, Edyta

N1 - Publisher Copyright: © The Authors, published by EDP Sciences, 2017.

PY - 2017/11/7

Y1 - 2017/11/7

N2 - The adsorption of three organic micropollutants (diclofenac - DFN, pentachlorophenol - PCP and octylphenol - OP) on two kinds of carbon nanotubes (single walled carbon nanotubes - SWCNT and single walled carbon nanotubes with amine group - SWCNT-NH2) was investigated, in single and bicomponent solution at pH 5. SWCNT-NH2 had three times lower specific surface area than SWCNT. Significant differences were observed in sorption capacity of SWCNT and SWCNT-NH2 for given chemicals. The sorption uptake changes in the following order: OP > PCP > DFN for SWCNT and DFN > PCP > OP for SWCNT-NH2. A few times higher adsorption of OP on SWCNT came from low OP solubility in water in comparison to PCP and DFN. While, higher adsorption of DFN and PCP on SWCNT-NH2 was a result of electrostatic attraction between dissociated form of these chemicals and positively charged SWCNT-NH2 at pH 5. In adsorption from bicomponent solution, significant competition was observed between PCP and DFN due to similar adsorption mechanism on SWCNT-NH2. Opposite tendency was observed for SWCNT, DFN did not greatly affect adsorption of PCP and OP since they were very easily absorbable by sigma-sigma interaction.

AB - The adsorption of three organic micropollutants (diclofenac - DFN, pentachlorophenol - PCP and octylphenol - OP) on two kinds of carbon nanotubes (single walled carbon nanotubes - SWCNT and single walled carbon nanotubes with amine group - SWCNT-NH2) was investigated, in single and bicomponent solution at pH 5. SWCNT-NH2 had three times lower specific surface area than SWCNT. Significant differences were observed in sorption capacity of SWCNT and SWCNT-NH2 for given chemicals. The sorption uptake changes in the following order: OP > PCP > DFN for SWCNT and DFN > PCP > OP for SWCNT-NH2. A few times higher adsorption of OP on SWCNT came from low OP solubility in water in comparison to PCP and DFN. While, higher adsorption of DFN and PCP on SWCNT-NH2 was a result of electrostatic attraction between dissociated form of these chemicals and positively charged SWCNT-NH2 at pH 5. In adsorption from bicomponent solution, significant competition was observed between PCP and DFN due to similar adsorption mechanism on SWCNT-NH2. Opposite tendency was observed for SWCNT, DFN did not greatly affect adsorption of PCP and OP since they were very easily absorbable by sigma-sigma interaction.

UR - https://www.scopus.com/pages/publications/85034429649

U2 - 10.1051/e3sconf/20172200076

DO - 10.1051/e3sconf/20172200076

M3 - Conference article

AN - SCOPUS:85034429649

SN - 2267-1242

VL - 22

JO - E3S Web of Conferences

JF - E3S Web of Conferences

M1 - 00076

T2 - International Conference on Advances in Energy Systems and Environmental Engineering, ASEE 2017

Y2 - 2 July 2017 through 5 July 2017

ER -

Single and competitive adsorption of OMPs by carbon nanotubes - Mechanism and fitting models

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