pH-metric method determining the solubility and solubility products of slightly soluble salts of arbitrary composition

Autor: Igor Povar, Oxana Spinu, Boris Pintilie

Publikováno v: Romanian Journal of Ecology & Environmental Chemistry, Vol 3, Iss 2, Pp 61-70 (2021)

The developed method of determining KS from pH metric data has a number of advantages compared to those used traditionally. First, in place of the residual concentrations of the salt components, only the pH value of the saturated solution is used in

Externí odkaz: https://doaj.org/article/8200e3600fa24e1697538fdf980e73c3

Revised Pourbaix diagrams for the vanadium – water system

Autor: Igor Povar, Oxana Spinu, Inga Zinicovscaia, Boris Pintilie, Stefano Ubaldini

Publikováno v: Journal of Electrochemical Science and Engineering, Vol 9, Iss 2 (2019)

The forms of occurrence of vanadium metal are determined by the major chemical reactions in the aquatic environment such as hydrolysis, oxidation, reduction, and precipitation. Depending on pH, potential and total concentration of inorganic ions and

Externí odkaz: https://doaj.org/article/57cea40ab6ce43c6b7c2eda60322ddf6

Graphical and computational methods for determining the stability constants of mono- and polynuclear complexes with a common intersection point of the family of formation curves

Autor: Boris Pintilie, Igor Povar, Oxana Spinu

Publikováno v: Romanian Journal of Ecology & Environmental Chemistry. 2:70-77

Aqueous polynuclear systems have been analyzed, for which the family of formation curves intersects at a common point. The analyzed graphical and computational method for determining the stability constants can be used as initial values within the it

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::82288064f97c0062b892d88dbcb8e933
https://doi.org/10.21698/rjeec.2020.210

Thermodinamic analyzing of heavy metals precipitation for their recovery from industrial wastewaters

Autor: Igor Povar, Inga Zinicovscaia, Stefano Ubaldini, Oxana Spinu, Boris Pintilie, Tudor Lupascu, Gheorghe Duca

Publikováno v: Environmental Engineering and Management Journal
19 (2020): 281–288.
info:cnr-pdr/source/autori:Igor Povar, Inga Zinicovscaia, Stefano Ubaldini, Oxana Spinu, Boris Pintilie, Tudor Lupascu and Gheorghe Duca/titolo:Thermodinamic analyzing of heavy metals precipitation for their recovery from industrial wastewaters/doi:/rivista:Environmental Engineering and Management Journal (Print)/anno:2020/pagina_da:281/pagina_a:288/intervallo_pagine:281–288/volume:19

This work seeks to develop a suitable heavy metals precipitation modeling approach that could give reasonable results in mainstream use with industrial wastewater treatment. This paper is devoted to the thermodynamic analysis of the degree of precipi

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=cnr_________::da603903342a5c6df3676327ee4de095
http://www.cnr.it/prodotto/i/434710

Expressions for Enthalpies of Concurrent Polynuclear Complex Formation Reactions in Two-Phase Aqueous Systems

Autor: Oxana Spinu, Igor Povar, Boris Pintilie

Publikováno v: Journal of Solution Chemistry. 47:1725-1739

The paper presents a new thermodynamic approach to studying polynuclear complex formation reactions in multicomponent two-phase systems, solid phase plus saturated aqueous solution, under real conditions. The quintessence of this developed approach c

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::3b66baf96f2c0560ad403cf71bf6dce2
https://doi.org/10.1007/s10953-018-0802-4