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

J Environ Sci Health A Tox Hazard Subst Environ Eng. 2011;46(6):553-9. doi: 10.1080/10934529.2011.562805.

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.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Biodegradation, Environmental
  • Chelating Agents / analysis
  • Chelating Agents / chemistry
  • Chelating Agents / metabolism*
  • Glutamic Acid / analogs & derivatives*
  • Glutamic Acid / analysis
  • Glutamic Acid / chemistry
  • Glutamic Acid / metabolism
  • Metals / analysis
  • Metals / chemistry
  • Metals / metabolism*
  • Models, Chemical
  • Sewage / chemistry
  • Sewage / microbiology
  • Waste Disposal, Fluid / methods
  • Water Pollutants, Chemical / analysis
  • Water Pollutants, Chemical / chemistry
  • Water Pollutants, Chemical / metabolism*

Substances

  • Chelating Agents
  • Metals
  • Sewage
  • Water Pollutants, Chemical
  • ethylenediamine-N,N'-diglutaric acid
  • Glutamic Acid