Search results for "Pitzer."

Liquid–liquid equilibria in the system H3PO4–KCl–H2O–tri-n-butyl phosphate: experiments and modelling

2004

Abstract The liquid–liquid equilibria of the system H3PO4–KCl–H2O–TBP was studied experimentally in the concentration range 0–6 mol/kg. The obtained data were modelled using the Pitzer equation for the aqueous phase and the Sergievskii–Dannus relationship for the organic phase. A fairly good agreement was observed between the model and the experimental data.

Thermodynamic characterisation of novel solutions for closed-loop reverse electrodialysis

2018

Closed-loop reverse electrodialysis is a novel technology to convert low-grade heat directly into electricity. It consists of a reverse electrodialysis unit coupled with a regeneration unit in which the waste-heat is used to restore the initial conditions of the two solutions. One of the most impor- tant advantages of closed-loop system is the possibility to select an ad-hoc salt solution to obtain high efficiency. In this regard, it is important to assess how the salt solution properties affect the performance of the energy generation and solution regeneration processes. The aim of this study is to analyse the effect of thermodynamic properties of non-conventional salt solutions within a R…

Euclid Preparation. XIV. The Complete Calibration of the Color–Redshift Relation (C3R2) Survey: Data Release 3

2021

Stanford, S. A., et al.

Mining minerals and critical raw materials from bittern: Understanding metal ions fate in saltwork ponds

2022

Seawater represents a potential resource for raw materials extraction. Although NaCl is the most representative mineral extracted other valuable compounds such as Mg, Li, Sr, Rb and B and elements at trace level (Cs, Co, In, Sc, Ga and Ge) are also contained in this “liquid mine”. Most of them are considered as Critical Raw Materials by the European Union. Solar saltworks, providing concentration factors of up-to 20 to 40, offer a perfect platform for the development of minerals and metal recovery schemes taking benefit of the concentration and purification achieved along the evaporation saltwork ponds. However, the geochemistry of these elements in this environment has not been yet thoroug…

Oltre Spitzer: «La bellezza artistica dell’antichissima elegia giudeo-italiana»

2013

Hydrolysis and chemical speciation of (C2H5)2Sn2+, (C2H5)3Sn+ and (C3H7)3Sn+ in aqueous media simulating the major composition of natural waters

2001

The hydrolysis of (C 2 H 5 ) 2 Sn 2+ , (C 2 H 5 ) 3 Sn + and (n-C 3 H 7 ) 3 Sn + has been studied, by potentiometric measurements ([H + ]-glass electrode), in NaNO 3 , NaCl, NaCl/Na 2 SO 4 mixtures and in a synthetic seawater (SSWE), as an ionic medium simulating the major composition of natural seawater, at different ionic strengths (0 ≤ I ≤ 5 mol dm -3 ) and salinities (15 ≤ S ≤ 45), and at t = 25 °C. Five hydrolytic species for (C 2 H 5 ) 2 Sn 2+ , three for (C 2 H 5 ) 3 Sn + and two for (C 3 H 7 ) 3 Sn + are found. Interactions with the anion components of SSWE, considered as single-salt seawater, are determined by means of a complex formation model. A predictive equation for the calcul…

利奥 • 斯皮策的问题批评 (Liao Sipice de wenti piping, La critica stlistica di Leo Spitzer)

2013

It is one of the first presentation in China of the Stylistic Criticism by Leo Spitzer.

Un grande filologo e la Grande guerra. Perifrasi del concetto di fame di Leo Spitzer, cento anni dopo

2019

Il giovane romanista Leo Spitzer pubblica al principio degli anni Venti del Secolo scorso tre opere fondamentali per la linguistica italiana, due delle quali strettamente legati alla sua esperienza di direttore di un gruppo di censori della corrispondenza dei prigionieri italiani in Austria-Ungheria in occasione della Prima guerra mondiale. Una di queste ha al centro la varia congerie delle designazioni della fame in tali lettere, tema che era appunto sottoposto al rigido controllo della censura. Recentemente tradotta in italiano e pubblicata con il corredo di apparati e introduzioni, l'opera viene esaminata in questo articolo da una prospettiva non solo dialettologico-variazionista, ma anc…

Quince años de Filología española en el contexto europeo (1912-1927). A propósito de la publicación del libro <i>Leo Spitzers Briefe an Hugo Sc…

2007

The letters written between 1912-1927 by the young scholar Leo Spitzer to the distinguished Romanist Hugo Schuchardt, allow us to look at the situation of Hispanic Studies in its european context. At the same time, this correspondence describes the foundation of the RFE in a great period for Hispanic and Romance Philology.

Modelling of natural and synthetic polyelectrolyte interactions in natural waters.

2006

In this paper SIT and Pitzer models are used for the first time to describe the interactions of natural and synthetic polyelectrolytes in natural waters. Measurements were made potentiometrically at 25 °C in single electrolyte media, such as Et4NI and NaCl (for fulvic acid 0.1 < I /mol L− 1 < 0.75), and in a multi-component medium simulating the composition of natural waters at a wide range of salinities (for fulvic and alginic acids: 5 < S < 45) with particular reference to sea water [Synthetic Sea Water for Equilibrium studies, SSWE]. In order to simplify calculations, SSWE was considered to be a “single salt” BA, with cation B and anion A representing all the major cations (Na+, K+, Mg2+…