Separation of pollutants from restaurant wastewater by electrocoagulation

Xueming Chen, Guohua Chen, Po Lock Yue

Research output: Journal article publicationJournal articleAcademic researchpeer-review

656 Citations (Scopus)

Abstract

The characteristics of restaurant wastewater were investigated. High oil and grease contents were detected. Electrocoagulation was used to treat this type of wastewater. Different electrode materials and operational conditions were examined. Aluminum was preferred to iron. Charge loading was found to be the only variable that affected the treatment efficiency significantly. The optimum charge loading and current density were 1.67-9.95 F/m3wastewater and 30-80 A/m2depending on the wastewater tested. The removal efficiency of oil and grease exceeded 94% for all wastewaters tested. The experimental results also show that the electrocoagulation can neutralize wastewater pH. Several mechanisms associated with pH variation are proposed.
Original languageEnglish
Pages (from-to)65-76
Number of pages12
JournalSeparation and Purification Technology
Volume19
Issue number1-2
DOIs
Publication statusPublished - 1 Jun 2000
Externally publishedYes

Keywords

  • Charge loading
  • Chemical oxygen demand
  • Current density
  • Oil and grease
  • Removal efficiency

ASJC Scopus subject areas

  • Analytical Chemistry
  • Filtration and Separation

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