title: Ethylenediamine-N,N'-diglutaric acid (EDDG) as a promising biodegradable chelator: quantification, complexation and biodegradation.
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.
authors.affiliation: REQUIMTE-Departamento de Quimica, Faculdade de Ciencias e Technologia, Universidade Nova de Lisboa, Caparica, Portugal.
authors.forename: Ana B
authors.initials: AB
authors.lastname: Lanham
authors.forename: Monica
authors.initials: M
authors.lastname: Carvalheira
authors.forename: Alexandre Mourao
authors.initials: AM
authors.lastname: Rodrigues
authors.forename: Vitor Vale
authors.initials: VV
authors.lastname: Cardoso
authors.forename: Maria Joao
authors.initials: MJ
authors.lastname: Benoliel
authors.forename: Maria Teresa
authors.initials: MT
authors.lastname: Barros
authors.forename: Maria Joao
authors.initials: MJ
authors.lastname: Morgado
authors.forename: Helena M V M
authors.initials: HM
authors.lastname: Soares
authors.forename: Paulo Costa
authors.initials: PC
authors.lastname: Lemos
authors.forename: Maria A M
authors.initials: MA
authors.lastname: Reis
mesh_terms: D001673:Biodegradation, Environmental; D002614:Chelating Agents / Q000032:analysis / Q000737:chemistry / Q000378:metabolism*; D018698:Glutamic Acid / Q000031:analogs & derivatives* / Q000032:analysis / Q000737:chemistry / Q000378:metabolism; D008670:Metals / Q000032:analysis / Q000737:chemistry / Q000378:metabolism*; D008956:Models, Chemical; D012722:Sewage / Q000737:chemistry / Q000382:microbiology; D014865:Waste Disposal, Fluid / Q000379:methods; D014874:Water Pollutants, Chemical / Q000032:analysis / Q000737:chemistry / Q000378:metabolism*
chemical_list: D002614:Chelating Agents; D008670:Metals; D012722:Sewage; D014874:Water Pollutants, Chemical; C560197:ethylenediamine-N,N'-diglutaric acid; D018698:Glutamic Acid