Organic contaminated sediments remediation with active caps: Nonlinear adsorption unveiled by combined isotherm and column transportation studies

Ke Yin, Priscilla Z. Viana, Karl J. Rockne

Research output: Contribution to journalArticle

Abstract

Bench-scale column studies were performed with four cap materials (sand, apatite, organoclay and granular activated carbon) for five target compounds (toluene, naphthalene, phenanthrene, pyrene and dichlorobiphenyl) to represent a range of cap materials and pollutants (volatile & semi-volatile compounds) commonly found in sediments. Two moment-derived methods were used to model cap performance. Rough agreement was observed between the column experiments and modeling data with the fronting and tailing effects identified from certain breakthrough curves indicating a high potential of non-linear adsorption. Distribution coefficients (kd) were experimentally determined with isotherm studies together with measurements of surface area and microporosity of the cap materials via nitrogen adsorption porisimetry. These studies unveiled the occurrence of nonlinear adsorption by Freundlich simulation. The effects of nonlinear adsorption of the cap were further explored via modeling. Results suggested better prediction of cap performance assuming nonlinear adsorption instead of linear adsorption results based upon the risk of release for a 30-year period.

LanguageEnglish (US)
Pages710-718
Number of pages9
JournalChemosphere
Volume214
DOIs
StatePublished - Jan 1 2019

Fingerprint

Remediation
Adsorption
Isotherms
Sediments
isotherm
remediation
adsorption
sediment
organoclay
Apatites
Organoclay
Microporosity
Pyrene
Apatite
Tailings
Toluene
breakthrough curve
Naphthalene
phenanthrene
naphthalene

Keywords

  • Active cap
  • Column study
  • Isotherm
  • Organic contaminants
  • Sediments

ASJC Scopus subject areas

  • Environmental Engineering
  • Environmental Chemistry
  • Chemistry(all)
  • Pollution
  • Health, Toxicology and Mutagenesis

Cite this

Organic contaminated sediments remediation with active caps : Nonlinear adsorption unveiled by combined isotherm and column transportation studies. / Yin, Ke; Viana, Priscilla Z.; Rockne, Karl J.

In: Chemosphere, Vol. 214, 01.01.2019, p. 710-718.

Research output: Contribution to journalArticle

@article{f7040b146c4d44aca5ee3ef9fb01c1af,
title = "Organic contaminated sediments remediation with active caps: Nonlinear adsorption unveiled by combined isotherm and column transportation studies",
abstract = "Bench-scale column studies were performed with four cap materials (sand, apatite, organoclay and granular activated carbon) for five target compounds (toluene, naphthalene, phenanthrene, pyrene and dichlorobiphenyl) to represent a range of cap materials and pollutants (volatile & semi-volatile compounds) commonly found in sediments. Two moment-derived methods were used to model cap performance. Rough agreement was observed between the column experiments and modeling data with the fronting and tailing effects identified from certain breakthrough curves indicating a high potential of non-linear adsorption. Distribution coefficients (kd) were experimentally determined with isotherm studies together with measurements of surface area and microporosity of the cap materials via nitrogen adsorption porisimetry. These studies unveiled the occurrence of nonlinear adsorption by Freundlich simulation. The effects of nonlinear adsorption of the cap were further explored via modeling. Results suggested better prediction of cap performance assuming nonlinear adsorption instead of linear adsorption results based upon the risk of release for a 30-year period.",
keywords = "Active cap, Column study, Isotherm, Organic contaminants, Sediments",
author = "Ke Yin and Viana, {Priscilla Z.} and Rockne, {Karl J.}",
year = "2019",
month = "1",
day = "1",
doi = "10.1016/j.chemosphere.2018.09.122",
language = "English (US)",
volume = "214",
pages = "710--718",
journal = "Chemosphere",
issn = "0045-6535",
publisher = "Elsevier Limited",

}

TY - JOUR

T1 - Organic contaminated sediments remediation with active caps

T2 - Chemosphere

AU - Yin, Ke

AU - Viana, Priscilla Z.

AU - Rockne, Karl J.

PY - 2019/1/1

Y1 - 2019/1/1

N2 - Bench-scale column studies were performed with four cap materials (sand, apatite, organoclay and granular activated carbon) for five target compounds (toluene, naphthalene, phenanthrene, pyrene and dichlorobiphenyl) to represent a range of cap materials and pollutants (volatile & semi-volatile compounds) commonly found in sediments. Two moment-derived methods were used to model cap performance. Rough agreement was observed between the column experiments and modeling data with the fronting and tailing effects identified from certain breakthrough curves indicating a high potential of non-linear adsorption. Distribution coefficients (kd) were experimentally determined with isotherm studies together with measurements of surface area and microporosity of the cap materials via nitrogen adsorption porisimetry. These studies unveiled the occurrence of nonlinear adsorption by Freundlich simulation. The effects of nonlinear adsorption of the cap were further explored via modeling. Results suggested better prediction of cap performance assuming nonlinear adsorption instead of linear adsorption results based upon the risk of release for a 30-year period.

AB - Bench-scale column studies were performed with four cap materials (sand, apatite, organoclay and granular activated carbon) for five target compounds (toluene, naphthalene, phenanthrene, pyrene and dichlorobiphenyl) to represent a range of cap materials and pollutants (volatile & semi-volatile compounds) commonly found in sediments. Two moment-derived methods were used to model cap performance. Rough agreement was observed between the column experiments and modeling data with the fronting and tailing effects identified from certain breakthrough curves indicating a high potential of non-linear adsorption. Distribution coefficients (kd) were experimentally determined with isotherm studies together with measurements of surface area and microporosity of the cap materials via nitrogen adsorption porisimetry. These studies unveiled the occurrence of nonlinear adsorption by Freundlich simulation. The effects of nonlinear adsorption of the cap were further explored via modeling. Results suggested better prediction of cap performance assuming nonlinear adsorption instead of linear adsorption results based upon the risk of release for a 30-year period.

KW - Active cap

KW - Column study

KW - Isotherm

KW - Organic contaminants

KW - Sediments

UR - http://www.scopus.com/inward/record.url?scp=85054633816&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85054633816&partnerID=8YFLogxK

U2 - 10.1016/j.chemosphere.2018.09.122

DO - 10.1016/j.chemosphere.2018.09.122

M3 - Article

VL - 214

SP - 710

EP - 718

JO - Chemosphere

JF - Chemosphere

SN - 0045-6535

ER -