Stripping as a pretreatment process of industrial oily wastewater

S. G. Poulopoulos, E. C. Voutsas, H. P. Grigoropoulou, C. J. Philippopoulos

Research output: Contribution to journalArticle

24 Citations (Scopus)

Abstract

In the present work, the potential of purifying an oily wastewater from a lubricant production unit, consisting mainly of alcohols, phenols and heavy linear saturated hydrocarbons, using the stripping process was examined. The effect of stripping gas flow (75-300 L N2 L WW -1 h -1) and system temperature (295-355 K) on the chemical oxygen demand (COD) of the effluent was investigated. A decrease in COD content of 25-30% was achieved after 4 h for stripping gas flow rates over 150 L N2 L WW -1 h -1, whereas the rate of organic compounds removal was enhanced by increasing temperature up to 333 K. At higher temperatures an effluent condensation was observed. Gas chromatography-mass spectrometry analysis of both liquid and gas phase showed that linear saturated hydrocarbons of high molecular weight were stripped out from the wastewater. The results are in agreement with the equilibrium ratio of these compounds as predicted from by theoretical calculations.

Original languageEnglish
Pages (from-to)135-139
Number of pages5
JournalJournal of Hazardous Materials
Volume117
Issue number2-3
DOIs
Publication statusPublished - Jan 31 2005
Externally publishedYes

Fingerprint

Waste Water
gas flow
chemical oxygen demand
Biological Oxygen Demand Analysis
Wastewater
Gases
Chemical oxygen demand
hydrocarbon
effluent
Hydrocarbons
wastewater
Temperature
Flow of gases
lubricant
Effluents
Lubricants
condensation
phenol
alcohol
organic compound

Keywords

  • Equilibrium ratio
  • Lubricant
  • Oily wastewater
  • Pretreatment
  • Stripping

ASJC Scopus subject areas

  • Chemical Health and Safety
  • Process Chemistry and Technology
  • Safety, Risk, Reliability and Quality
  • Environmental Engineering

Cite this

Stripping as a pretreatment process of industrial oily wastewater. / Poulopoulos, S. G.; Voutsas, E. C.; Grigoropoulou, H. P.; Philippopoulos, C. J.

In: Journal of Hazardous Materials, Vol. 117, No. 2-3, 31.01.2005, p. 135-139.

Research output: Contribution to journalArticle

Poulopoulos, S. G. ; Voutsas, E. C. ; Grigoropoulou, H. P. ; Philippopoulos, C. J. / Stripping as a pretreatment process of industrial oily wastewater. In: Journal of Hazardous Materials. 2005 ; Vol. 117, No. 2-3. pp. 135-139.
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