Transport of hydrophobic organics by colloids through porous media 2. Commercial humic acid macromolecules and polyaromatic hydrocarbons

I. Sojitra; K. T. Valsaraj; D. D. Reible; L. J. Thibodeaux

doi:10.1016/0927-7757(95)03433-1

Transport of hydrophobic organics by colloids through porous media 2. Commercial humic acid macromolecules and polyaromatic hydrocarbons

I. Sojitra, K. T. Valsaraj, D. D. Reible, L. J. Thibodeaux

Civil Environ Construct Engineering

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

26 Scopus citations

Abstract

In Part 1 of this series [Colloids Surfaces A: Physicochem. Eng. Aspects, 94 (1995) 197] we reported the influence of a model colloid (polystyrene latex) on the transport of pollutants through a model porous medium (glass beads). In this paper the influence of commercial Aldrich humic acid macromolecules on the partitioning and transport of polyaromatic hydrocarbons (PAHs) through two different porous media under carefully controlled pH and ionic strength conditions are reported. The PAHs studied were pyrene, phenanthrene and dibenzofuran, and the porous media used were glass beads and quartz sand subjected to extensive cleaning procedures to obtain reproducible surfaces. The influence of ionic strength on the transport of PAHs through the porous media in the presence and absence of humic acid macromolecules were explored. Under low ionic strength conditions, the humic acid macromolecules enhanced the transport of PAHs through the porous media; however, at high ionic strength the deposition of humic acid on the porous media retarded the transport of PAHs. The effects of different types of inorganic salts were studied. CaCl₂ had a greater effect than KCl in retarding the movement of humic acid macromolecules and PAHs through the column.

Original language	English
Pages (from-to)	141-157
Number of pages	17
Journal	Colloids and Surfaces A: Physicochemical and Engineering Aspects
Volume	110
Issue number	2
DOIs	https://doi.org/10.1016/0927-7757(95)03433-1
State	Published - May 15 1996

Keywords

Colloids
Humic matter
Polyaromatic organics
Porous media
Transport

Access to Document

10.1016/0927-7757(95)03433-1

Cite this

@article{c470b8fdc675445c8cca7f26a086c462,

title = "Transport of hydrophobic organics by colloids through porous media 2. Commercial humic acid macromolecules and polyaromatic hydrocarbons",

abstract = "In Part 1 of this series [Colloids Surfaces A: Physicochem. Eng. Aspects, 94 (1995) 197] we reported the influence of a model colloid (polystyrene latex) on the transport of pollutants through a model porous medium (glass beads). In this paper the influence of commercial Aldrich humic acid macromolecules on the partitioning and transport of polyaromatic hydrocarbons (PAHs) through two different porous media under carefully controlled pH and ionic strength conditions are reported. The PAHs studied were pyrene, phenanthrene and dibenzofuran, and the porous media used were glass beads and quartz sand subjected to extensive cleaning procedures to obtain reproducible surfaces. The influence of ionic strength on the transport of PAHs through the porous media in the presence and absence of humic acid macromolecules were explored. Under low ionic strength conditions, the humic acid macromolecules enhanced the transport of PAHs through the porous media; however, at high ionic strength the deposition of humic acid on the porous media retarded the transport of PAHs. The effects of different types of inorganic salts were studied. CaCl2 had a greater effect than KCl in retarding the movement of humic acid macromolecules and PAHs through the column.",

keywords = "Colloids, Humic matter, Polyaromatic organics, Porous media, Transport",

author = "I. Sojitra and Valsaraj, {K. T.} and Reible, {D. D.} and Thibodeaux, {L. J.}",

note = "Funding Information: This work was supported by a grant from the National Science Foundation EPSCoR program (EHR 9108765) through the Louisiana State Board of Regents (NSF/LaSER(1992-96)-ADP-03).",

year = "1996",

month = may,

day = "15",

doi = "10.1016/0927-7757(95)03433-1",

language = "English",

volume = "110",

pages = "141--157",

journal = "Colloids and Surfaces A: Physicochemical and Engineering Aspects",

issn = "0927-7757",

number = "2",

}

TY - JOUR

T1 - Transport of hydrophobic organics by colloids through porous media 2. Commercial humic acid macromolecules and polyaromatic hydrocarbons

AU - Sojitra, I.

AU - Valsaraj, K. T.

AU - Reible, D. D.

AU - Thibodeaux, L. J.

N1 - Funding Information: This work was supported by a grant from the National Science Foundation EPSCoR program (EHR 9108765) through the Louisiana State Board of Regents (NSF/LaSER(1992-96)-ADP-03).

PY - 1996/5/15

Y1 - 1996/5/15

N2 - In Part 1 of this series [Colloids Surfaces A: Physicochem. Eng. Aspects, 94 (1995) 197] we reported the influence of a model colloid (polystyrene latex) on the transport of pollutants through a model porous medium (glass beads). In this paper the influence of commercial Aldrich humic acid macromolecules on the partitioning and transport of polyaromatic hydrocarbons (PAHs) through two different porous media under carefully controlled pH and ionic strength conditions are reported. The PAHs studied were pyrene, phenanthrene and dibenzofuran, and the porous media used were glass beads and quartz sand subjected to extensive cleaning procedures to obtain reproducible surfaces. The influence of ionic strength on the transport of PAHs through the porous media in the presence and absence of humic acid macromolecules were explored. Under low ionic strength conditions, the humic acid macromolecules enhanced the transport of PAHs through the porous media; however, at high ionic strength the deposition of humic acid on the porous media retarded the transport of PAHs. The effects of different types of inorganic salts were studied. CaCl2 had a greater effect than KCl in retarding the movement of humic acid macromolecules and PAHs through the column.

AB - In Part 1 of this series [Colloids Surfaces A: Physicochem. Eng. Aspects, 94 (1995) 197] we reported the influence of a model colloid (polystyrene latex) on the transport of pollutants through a model porous medium (glass beads). In this paper the influence of commercial Aldrich humic acid macromolecules on the partitioning and transport of polyaromatic hydrocarbons (PAHs) through two different porous media under carefully controlled pH and ionic strength conditions are reported. The PAHs studied were pyrene, phenanthrene and dibenzofuran, and the porous media used were glass beads and quartz sand subjected to extensive cleaning procedures to obtain reproducible surfaces. The influence of ionic strength on the transport of PAHs through the porous media in the presence and absence of humic acid macromolecules were explored. Under low ionic strength conditions, the humic acid macromolecules enhanced the transport of PAHs through the porous media; however, at high ionic strength the deposition of humic acid on the porous media retarded the transport of PAHs. The effects of different types of inorganic salts were studied. CaCl2 had a greater effect than KCl in retarding the movement of humic acid macromolecules and PAHs through the column.

KW - Colloids

KW - Humic matter

KW - Polyaromatic organics

KW - Porous media

KW - Transport

UR - http://www.scopus.com/inward/record.url?scp=0030152806&partnerID=8YFLogxK

U2 - 10.1016/0927-7757(95)03433-1

DO - 10.1016/0927-7757(95)03433-1

M3 - Article

AN - SCOPUS:0030152806

SN - 0927-7757

VL - 110

SP - 141

EP - 157

JO - Colloids and Surfaces A: Physicochemical and Engineering Aspects

JF - Colloids and Surfaces A: Physicochemical and Engineering Aspects

IS - 2

ER -

Transport of hydrophobic organics by colloids through porous media 2. Commercial humic acid macromolecules and polyaromatic hydrocarbons

Abstract

Keywords

Access to Document

Other files and links

Fingerprint

Cite this