Photocatalytic degradation of hydrocarbons by bentonite and TiO 2 in aqueous suspensions containing surfactants

Tímea Pernyeszi, I. Dékány

Research output: Contribution to journalArticle

28 Citations (Scopus)

Abstract

Organic substances (toluene, asphaltene dissolved in toluene) poorly soluble in water were solubilized by sodium dodecylsulfate (SDS) and the organic pollutants were mineralized together with the surfactants in diluted TiO2 suspension by UV light. In concentrated aqueous suspension, crude oil was photodegraded on the surface of Na-bentonite and the photocatalyst TiO2. Experiments have been carried out with Na-bentonite contaminated with crude oil mixed in a ratio of 1:1 with TiO 2 as well. The photooxidation processes were followed by total organic carbon content (TOC) and diffuse reflection infrared spectroscopy (DRIFT) measurements.

Original languageEnglish
Pages (from-to)191-199
Number of pages9
JournalColloids and Surfaces A: Physicochemical and Engineering Aspects
Volume230
Issue number1-3
DOIs
Publication statusPublished - Dec 10 2003

Fingerprint

Bentonite
bentonite
Petroleum
Toluene
Hydrocarbons
crude oil
Surface-Active Agents
toluene
Suspensions
Surface active agents
Crude oil
hydrocarbons
surfactants
degradation
Degradation
Photooxidation
Organic pollutants
photooxidation
Photocatalysts
Organic carbon

Keywords

  • Asphaltenes
  • Clay minerals
  • Crude oil emulsions
  • Photooxidation
  • Solubilization
  • TiO hydrocarbons

ASJC Scopus subject areas

  • Colloid and Surface Chemistry
  • Physical and Theoretical Chemistry

Cite this

@article{94a441f4cc1449608c136dae49227518,
title = "Photocatalytic degradation of hydrocarbons by bentonite and TiO 2 in aqueous suspensions containing surfactants",
abstract = "Organic substances (toluene, asphaltene dissolved in toluene) poorly soluble in water were solubilized by sodium dodecylsulfate (SDS) and the organic pollutants were mineralized together with the surfactants in diluted TiO2 suspension by UV light. In concentrated aqueous suspension, crude oil was photodegraded on the surface of Na-bentonite and the photocatalyst TiO2. Experiments have been carried out with Na-bentonite contaminated with crude oil mixed in a ratio of 1:1 with TiO 2 as well. The photooxidation processes were followed by total organic carbon content (TOC) and diffuse reflection infrared spectroscopy (DRIFT) measurements.",
keywords = "Asphaltenes, Clay minerals, Crude oil emulsions, Photooxidation, Solubilization, TiO hydrocarbons",
author = "T{\'i}mea Pernyeszi and I. D{\'e}k{\'a}ny",
year = "2003",
month = "12",
day = "10",
doi = "10.1016/j.colsurfa.2003.09.023",
language = "English",
volume = "230",
pages = "191--199",
journal = "Colloids and Surfaces A: Physicochemical and Engineering Aspects",
issn = "0927-7757",
publisher = "Elsevier",
number = "1-3",

}

TY - JOUR

T1 - Photocatalytic degradation of hydrocarbons by bentonite and TiO 2 in aqueous suspensions containing surfactants

AU - Pernyeszi, Tímea

AU - Dékány, I.

PY - 2003/12/10

Y1 - 2003/12/10

N2 - Organic substances (toluene, asphaltene dissolved in toluene) poorly soluble in water were solubilized by sodium dodecylsulfate (SDS) and the organic pollutants were mineralized together with the surfactants in diluted TiO2 suspension by UV light. In concentrated aqueous suspension, crude oil was photodegraded on the surface of Na-bentonite and the photocatalyst TiO2. Experiments have been carried out with Na-bentonite contaminated with crude oil mixed in a ratio of 1:1 with TiO 2 as well. The photooxidation processes were followed by total organic carbon content (TOC) and diffuse reflection infrared spectroscopy (DRIFT) measurements.

AB - Organic substances (toluene, asphaltene dissolved in toluene) poorly soluble in water were solubilized by sodium dodecylsulfate (SDS) and the organic pollutants were mineralized together with the surfactants in diluted TiO2 suspension by UV light. In concentrated aqueous suspension, crude oil was photodegraded on the surface of Na-bentonite and the photocatalyst TiO2. Experiments have been carried out with Na-bentonite contaminated with crude oil mixed in a ratio of 1:1 with TiO 2 as well. The photooxidation processes were followed by total organic carbon content (TOC) and diffuse reflection infrared spectroscopy (DRIFT) measurements.

KW - Asphaltenes

KW - Clay minerals

KW - Crude oil emulsions

KW - Photooxidation

KW - Solubilization

KW - TiO hydrocarbons

UR - http://www.scopus.com/inward/record.url?scp=0344925656&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0344925656&partnerID=8YFLogxK

U2 - 10.1016/j.colsurfa.2003.09.023

DO - 10.1016/j.colsurfa.2003.09.023

M3 - Article

AN - SCOPUS:0344925656

VL - 230

SP - 191

EP - 199

JO - Colloids and Surfaces A: Physicochemical and Engineering Aspects

JF - Colloids and Surfaces A: Physicochemical and Engineering Aspects

SN - 0927-7757

IS - 1-3

ER -