Biodegradation of mixtures of phenolic compounds in an upward-flow anaerobic sludge blanket reactor

Elias Razo-Flores, Margarita Iniestra-González, James A Field, Patricia Olguin-Lora, Laura Puig-Grajales

Research output: Contribution to journalArticle

42 Citations (Scopus)

Abstract

The anaerobic biodegradability of mixtures of phenolic compounds was studied under continuous and batch systems. Continuous experiments were carried out in up-flow anaerobic sludge bed (UASB) reactors degrading a mixture of phenol and p-cresol as the main carbon and energy sources. The total chemical oxygen demand (COD) removal above 90% was achieved even at organic loading rates as high as 7 kg COD/m3/day. Batch experiments were conducted with mixtures of phenolic compounds (phenol, p-cresol, and o-cresol) to determine the specific biodegradation rates using unadapted and adapted anaerobic granular sludge. Phenol and p-cresol were mineralized by adapted sludge with rates several orders of magnitude higher than unadapted sludge. Additionally, an UASB reactor was operated with the mixture phenol, p-cresol, and o-cresol. After 54 days of operation, 80% of o-cresol (supplied at 132 mg/L) was eliminated. The phenol biodegradation was not affected by the presence of o-cresol. These results demonstrate that major phenolic components in petrochemical effluents can be biodegraded simultaneously during anaerobic treatment.

Original languageEnglish (US)
Pages (from-to)999-1006
Number of pages8
JournalJournal of Environmental Engineering
Volume129
Issue number11
DOIs
StatePublished - Nov 2003

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phenolic compound
Phenol
Biodegradation
Phenols
phenol
biodegradation
sludge
Chemical oxygen demand
chemical oxygen demand
Biodegradability
Petrochemicals
Effluents
Carbon
experiment
Experiments
reactor
effluent
4-cresol
2-cresol
carbon

Keywords

  • Anaerobic processes
  • Biodegradation
  • Cisterns
  • Methane
  • Phenol
  • Sludge
  • Wastewater treatment

ASJC Scopus subject areas

  • Environmental Engineering
  • Environmental Science(all)
  • Environmental Chemistry
  • Civil and Structural Engineering

Cite this

Biodegradation of mixtures of phenolic compounds in an upward-flow anaerobic sludge blanket reactor. / Razo-Flores, Elias; Iniestra-González, Margarita; Field, James A; Olguin-Lora, Patricia; Puig-Grajales, Laura.

In: Journal of Environmental Engineering, Vol. 129, No. 11, 11.2003, p. 999-1006.

Research output: Contribution to journalArticle

Razo-Flores, Elias ; Iniestra-González, Margarita ; Field, James A ; Olguin-Lora, Patricia ; Puig-Grajales, Laura. / Biodegradation of mixtures of phenolic compounds in an upward-flow anaerobic sludge blanket reactor. In: Journal of Environmental Engineering. 2003 ; Vol. 129, No. 11. pp. 999-1006.
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