Biodegradabilities of Ethylenediamine-N,N′-disuccinic Acid (EDDS) and Other Chelating Agents | Zendy

Rikiya Takahashi | Zendy; Naoshi Fujimoto | Zendy; Masaharu Suzuki | Zendy; Takakazu Endo | Zendy

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Biodegradabilities of Ethylenediamine-N,N′-disuccinic Acid (EDDS) and Other Chelating Agents

Author(s) -

Rikiya Takahashi,

Naoshi Fujimoto,

Masaharu Suzuki,

Takakazu Endo

Publication year - 1997

Publication title -

bioscience biotechnology and biochemistry

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.509

H-Index - 116

eISSN - 1347-6947

pISSN - 0916-8451

DOI - 10.1271/bbb.61.1957

Subject(s) - nitrilotriacetic acid , edds , ethylenediaminetetraacetic acid , ethylenediamine , chelation , chemistry , acclimatization , citric acid , effluent , nuclear chemistry , activated sludge , wastewater , organic chemistry , environmental chemistry , heavy metals , biology , waste management , botany , phytoremediation , engineering

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.

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