Determination of chemical oxygen demand (COD) using ultrasound digestion and oxidation-reduction potential-based titration

Hyunook Kim, Honglae Lim, Mark F. Colosimo

Research output: Contribution to journalArticlepeer-review

10 Scopus citations

Abstract

A new method for determining wastewater chemical oxygen demand (COD) using ultrasonic digestion and titration based on oxidation reduction potential (ORP) was developed. COD values of potassium hydrogen phthalate solution obtained by ultrasonic digestion were well matched with those obtained using Standard Methods. When applied to determine COD of real wastewater collected from a local treatment plant, results from the new method were within 80% to 90% of those obtained using Standard Methods. Nonetheless, the proposed strategy has the potential to be implemented into an online COD analyzing system.

Original languageEnglish
Pages (from-to)1665-1670
Number of pages6
JournalJournal of Environmental Science and Health - Part A Toxic/Hazardous Substances and Environmental Engineering
Volume42
Issue number11
DOIs
StatePublished - Sep 2007

Keywords

  • COD determination
  • Oxidation-reduction potential
  • Process control
  • Ultrasonic digestion

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