The article presents the results of improving methods for diagnosing energy oil “Tp-30” pumping unit NPP equipment coolant circulation system. When studying physicochemical and thermophysical properties this oil, it was found that: indicators “acid number”, “water content”, “content mechanical impurities”, additive “Ionol”, “flash point”, “kinematic viscosity” correspond to established standard...

A new non-fluorinated malonamide-based ionic liquid extractant was synthesized and investigated for the extraction behavior of europium(III) and other trivalent rare-earth ions from nitric acid medium. The extractant was the functionalized ionic liquid trihexyl(tetradecyl)phosphonium N,N,N',N'-tetra(2-ethylhexyl)malonate, [P66614][MA], and it was used in combination with the non-fluorinated ion...

Chemical extractants used to measure labile soil metal must ideally select for and solubilise the labile fraction, with minimal solubilisation of non-labile metal. We assessed four extractants (0.43 M HNO3, 0.43 M CH3COOH, 0.05 M Na2H2EDTA and 1 M CaCl2) against these requirements. For soils contaminated by contrasting sources, we compared isotopically exchangeable Ni, Cu, Zn, Cd and Pb (EValue...

There has been increasing environmental concerns on the metallic pollution in recent decades. The conventional technologies used for metal extraction are ion-exchange resins, polymer ultrafiltration and microemulsion. The whole extraction mechanism can be divided into 4 steps: 1) The binding of dissolved metal to active sites, 2) Separation of the metal load extractant from the lean phase, 3) R...

Abstract Amine absorption processes designed to remove acid gases from gas streams generally face a major challenge of solvent degradation. This degradation leads the formation heat-stable salts (HSS), corrosive agents that irreversibly bind free alkanolamine. The present study proposes, for first time, method HSS perstraction using liquid–liquid membrane contactor allows transfer through porou...

It had previously been shown that 2,6-di(5,6-dialkyl-1,2,4-triazin-3-yl)pyridines extract Am(III) selectively over Eu(III), giving a separation factor of 100-120. In this work a more detailed study of the distribution equilibria was made. If not given otherwise, 2,6-di(5,6-dipropyl-1,2,4-triazin-3yl)pyridine (= B) was taken as a representative of the title extractant class and a mixture of bran...

Abstract Extractant for estimating plant available arsenic (As) in soil has not been universally established. Moreover, to assess and monitor the complex chemical behaviour of subsequently its transfer crops, a suitable extraction protocol considering properties relation crop uptake is required. For this purpose, pot experiment was conducted evaluate suitability extractants determination extrac...

Three room temperature ionic liquids (RTILs), viz. C(4)mim(+)·PF(6)(-), C(6)mim(+)·PF(6)(-) and C(8)mim(+)·PF(6)(-), were evaluated as diluents for the extraction of Am(III) by N,N,N',N'-tetraoctyl diglycolamide (TODGA). At 3 M HNO(3), the D(Am)-values by 0.01 M TODGA were found to be 102, 34 and 74 for C(4)mim(+)·PF(6)(-), C(6)mim(+)·PF(6)(-) and C(8)mim(+)·PF(6)(-), respectively. The extracti...

Mobile carrier properties of two schiff base ligands, named <span style="font-size: 10.0pt; font-family: 'Times New Roman','serif'; mso-fareast-font-family: 'Times New Roman'; mso-ansi-langua...