Formation of Fe(II)NO-NTA complex from HNO<SUB>2</SUB> and Fe(II)-NTA complex

Biodegradation of nitrilotriacetic acid (NTA) and ferric-NTA complex by aerobic microbial granules.

Development of mixed-culture microbial granules under aerobic conditions in a sequencing batch reactor (SBR), capable of completely degrading a recalcitrant metal chelating agent is reported. In laboratory-scale reactor studies, the microbial granules degraded 2mM of free nitrilotriacetic acid (NTA) and Fe(III)-NTA completely in 14 and 40 h, respectively. Free NTA was degraded at a specific rat...

2 Dta 2 Nta Nta

15 2DTA 2NTA NTA p MITL k U k DTA Figure 5: Relationship between various classes Theorem 5.2 The membership problem for 2NTA is solvable in PSPACE. Proof. Consider a 2NTA A, and let k be the magnitude of the largest constant appearing in a clock constraint in the transitions of A. Given a timed word w = (;) of length n, deene R w to be the set comprising of i + c and (i + j + c)=2 for 1 i; j n ...

The Formation of Intermediates in EDTA and NTA Biodegradation

Widely used anthropogenic chelating agents EDTA and NTA are ubiquitous in wastewaters and natural waters. Chelating agents may enhance the mobility of heavy metals and radionuclides or increase eutrophication. Biodegradation of these chelates may reduce metal mobility, offering a remediation solution. Formation of metabolic intermediates was previously reported during the biodegradation of EDTA...

Uptake of iron and nitrilotriacetate (NTA) in rat liver and the toxic effect of Fe-NTA.

A previous study has shown that a single injection of ferric nitrilotriacetate (Fe-NTA) produces hepatic parenchymal iron loading in rats. The present paper reports on iron uptake by rat liver and iron toxicity in the liver after a single injection of Fe-NTA (7.5 mg Fe/kg B.W.). Iron uptake was examined with 59Fe-NTA and Fe-[14C]-NTA. Thirty percent of the injected 59Fe was incorporated in the ...

OPINION ON Trisodium nitrilotriacetate (NTA)