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Separation of coal-tar constituents from soil particles in a two-liquid-phase slurry system

Schuur, JHB and Mattiasson, Bo LU (2003) In Environmental Technology 24(6). p.755-765
Abstract
An evaluation has been made of the capability of rapeseed oil to dissolve polycyclic aromatic hydrocarbon (PAH) crystals in a biphasic system and of its capability to extract PAHs from polluted soil in a two-liquid-phase (TLP) slurry system. Up to 220 g l(-1) of the crystalline hydrocarbons could be dissolved in the organic phase, indicating oil/water-partitioning coefficients of 10(5). When soil from a former gasworks site was treated in a TLP slurry system, it was found that a certain critical amount of vegetable oil had to be added in order to form a free oil phase. Single and multiple extractions gave similar results for multiple short-term and single long-term treatments, with a maximum of 87% for pyrene release. Following a 30-day... (More)
An evaluation has been made of the capability of rapeseed oil to dissolve polycyclic aromatic hydrocarbon (PAH) crystals in a biphasic system and of its capability to extract PAHs from polluted soil in a two-liquid-phase (TLP) slurry system. Up to 220 g l(-1) of the crystalline hydrocarbons could be dissolved in the organic phase, indicating oil/water-partitioning coefficients of 10(5). When soil from a former gasworks site was treated in a TLP slurry system, it was found that a certain critical amount of vegetable oil had to be added in order to form a free oil phase. Single and multiple extractions gave similar results for multiple short-term and single long-term treatments, with a maximum of 87% for pyrene release. Following a 30-day bioslurry treatment, the total concentration of the 16 EPA PAHs in the soil decreased from 2740 mg kg(-1) to 1366 mg kg(-1). This was followed by one of three different 12-day post-bioslurry treatments. Further bioslurry treatment reduced the final concentration to 1002 mg kg(-1). Abiotic treatment with a surfactant (Brij 30) achieved a reduction to 797 mg kg(-1). Treatment with rapeseed oil gave the best reduction to 343 mg kg(-1). (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
gasworks site, bioslurry, vegetable oil
in
Environmental Technology
volume
24
issue
6
pages
755 - 765
publisher
Selper Ltd
external identifiers
  • wos:000184174300012
  • pmid:12868531
  • scopus:0037629429
ISSN
1479-487X
language
English
LU publication?
yes
id
695790ab-2d7b-4f5f-88ee-7660f8ed1f70 (old id 306123)
alternative location
http://www.ingentaconnect.com/content/selp/envt/2003/00000024/00000006/art00012
date added to LUP
2007-09-21 12:03:08
date last changed
2018-05-29 09:29:31
@article{695790ab-2d7b-4f5f-88ee-7660f8ed1f70,
  abstract     = {An evaluation has been made of the capability of rapeseed oil to dissolve polycyclic aromatic hydrocarbon (PAH) crystals in a biphasic system and of its capability to extract PAHs from polluted soil in a two-liquid-phase (TLP) slurry system. Up to 220 g l(-1) of the crystalline hydrocarbons could be dissolved in the organic phase, indicating oil/water-partitioning coefficients of 10(5). When soil from a former gasworks site was treated in a TLP slurry system, it was found that a certain critical amount of vegetable oil had to be added in order to form a free oil phase. Single and multiple extractions gave similar results for multiple short-term and single long-term treatments, with a maximum of 87% for pyrene release. Following a 30-day bioslurry treatment, the total concentration of the 16 EPA PAHs in the soil decreased from 2740 mg kg(-1) to 1366 mg kg(-1). This was followed by one of three different 12-day post-bioslurry treatments. Further bioslurry treatment reduced the final concentration to 1002 mg kg(-1). Abiotic treatment with a surfactant (Brij 30) achieved a reduction to 797 mg kg(-1). Treatment with rapeseed oil gave the best reduction to 343 mg kg(-1).},
  author       = {Schuur, JHB and Mattiasson, Bo},
  issn         = {1479-487X},
  keyword      = {gasworks site,bioslurry,vegetable oil},
  language     = {eng},
  number       = {6},
  pages        = {755--765},
  publisher    = {Selper Ltd},
  series       = {Environmental Technology},
  title        = {Separation of coal-tar constituents from soil particles in a two-liquid-phase slurry system},
  volume       = {24},
  year         = {2003},
}