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A bacterial strain LPM-410 capable of utilizing ethylenediaminetetraacetate (EDTA) as the sole source of energy, carbon, and nitrogen was isolated from sewage sludge and identified as a Pseudomonas sp. on the basis of its phenotypic characteristics. Suspensions of exponential-phase cells degraded EDTA, Mg–, Ca–, Ba–, and Mn–EDTA at constant specific rates ranging from 0.363 to 0.525 mmol EDTA/(g cells h). The more stable chelate, Zn–EDTA, was degraded at a lower rate (0.195 ± 0.030 mmol EDTA/(g cells h)), and here was no degradation of Co–, Cu–, Pb–, and Fe(III)–EDTA. |
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