title: Biodegradabilities of ethylenediamine-N,N'-disuccinic acid (EDDS) and other chelating agents.
abstract: Biodegradabilities of chelating agents were tested with activated sludge. Ethylenediaminetetraacetic acid (EDTA) remained intact in the effluent even after acclimation for 100 days, but propanediamine-N,N'-disuccinic acid (PDDS) and nitrilotriacetic acid (NTA) were biodegraded after acclimation for 5 and 23 days, respectively. Optical isomers of ethylenediamine-N,N'-disuccinic acid (EDDS) had different biodegradabilities: SS- and RS-isomers were susceptible to biodegradation, but the RR-isomer was resistant. SS-isomer was degraded even by activated sludge without acclimation.
authors.affiliation: Department of Brewing and Fermentation, Faculty of Agriculture, Tokyo University of Agriculture, Japan.
authors.forename: R
authors.initials: R
authors.lastname: Takahashi
authors.forename: N
authors.initials: N
authors.lastname: Fujimoto
authors.forename: M
authors.initials: M
authors.lastname: Suzuki
authors.forename: T
authors.initials: T
authors.lastname: Endo
mesh_terms: D001673:Biodegradation, Environmental; D002614:Chelating Agents / Q000378:metabolism*; D002851:Chromatography, High Pressure Liquid; D005029:Ethylenediamines / Q000378:metabolism*; D010726:Phosphodiesterase Inhibitors / Q000378:metabolism*; D011437:Propylamines / Q000737:chemistry / Q000378:metabolism; D012722:Sewage; D013237:Stereoisomerism; D013386:Succinates / Q000737:chemistry / Q000378:metabolism*
chemical_list: D002614:Chelating Agents; D005029:Ethylenediamines; D010726:Phosphodiesterase Inhibitors; D011437:Propylamines; D012722:Sewage; D013386:Succinates; C109840:propanediamine-N,N'-disuccinic acid; C041447:N,N'-ethylenediamine disuccinic acid