Ethylenediamine-N,N'-diglutaric acid (EDDG) as a promising biodegradable chelator: Quantification, complexation and biodegradation

Ana B. Lanham, Mónica Carvalheira, Alexandre Mourão Rodrigues, Vitor Vale Cardoso, Maria João Benoliel, Teresa Barros Maria, Maria João Morgado, Helena M V M Soares, Paulo Costa Lemos, Maria A M Reis

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

[S,S]-ethylenediamine-N,N'-diglutaric acid (EDDG) has been gaining interest in the industrial sector as a promising chelator. In this study, the effective metal complexing capacity of EDDG over a wide pH range was modelled and its biodegradability assessed. Results showed that EDDG could effectively bind to several metallic ions in a wide pH range and was completely biodegraded after approximately 15 days by un-acclimatized sludge. To confirm its biodegradability, an accurate quantification method based on the combination of liquid chromatography and tandem quadrupole mass spectrometry (LC-MS/MS) was developed. Good linearity of the detector response was found for EDDG at concentrations ranging from 0,15 to 1,2 mg/L.

Original languageEnglish
Pages (from-to)553-559
Number of pages7
JournalJournal of Environmental Science and Health - Part A Toxic/Hazardous Substances and Environmental Engineering
Volume46
Issue number6
DOIs
Publication statusPublished - 2011

Keywords

  • Biodegradable
  • Chemical analysis
  • Environmental chemistry
  • Waste water

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