2010
DOI: 10.1016/j.gca.2009.09.033
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Synthesis, characterization and thermochemistry of a Pb-jarosite

Abstract: The enthalpy of formation from the elements of a well-characterized synthetic Pb-jarosite sample corresponding to the chemical formula (H 3 O) 0.74 Pb 0.13 Fe 2.92 (SO 4 ) 2 (OH) 5.76 (H 2 O) 0.24 was measured by high temperature oxide melt solution calorimetry. This value (DH f = À3695.9 ± 9.7 kJ/mol) is the first direct measurement of the heat of formation for a lead-containing jarosite. Comparison to the thermochemical properties of hydronium jarosite and plumbojarosite end-members strongly suggests the exi… Show more

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Cited by 58 publications
(29 citation statements)
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“…c !H ds (SO 3(g) ) as determined by Majzlan et al (2002). Forray et al (2010)., b Drouet and Navrotsky (2003)., c Robie and Hemingway (1995). d Majzlan et al (2002), e SGTE (1999), f Nordstrom and Archer (2003).…”
Section: Discussionmentioning
confidence: 99%
See 1 more Smart Citation
“…c !H ds (SO 3(g) ) as determined by Majzlan et al (2002). Forray et al (2010)., b Drouet and Navrotsky (2003)., c Robie and Hemingway (1995). d Majzlan et al (2002), e SGTE (1999), f Nordstrom and Archer (2003).…”
Section: Discussionmentioning
confidence: 99%
“…These cycles involves the enthalpy of drop solution of lead carbonate PbCO 3 (Forray et al, 2010), ZnO, and CuO as well as other thermodynamic data taken from the literature (Robie and Hemingway, 1995;SGTE, 1999;Majzlan et al, 2002;Drouet and Navrotsky, 2003;Nordstrom and Archer, 2003) and listed in Table 5. Application of these thermodynamic cycles leads to the heat of formation, from the elements (!Hº f ) -3691.2 ± 8.6 kJ/mol for the synthetic Pb-As jarosite, -3653.6 ± 8.2 kJ/mol for the synthetic Pb-Cu jarosite and -3669.4 ± 8.4 kJ/mol for the synthetic Pb-Zn jarosite.…”
Section: Calorimetric Datamentioning
confidence: 99%
“…Thus, the recycling and reuse of ammonium jarosite is of incredible importance. Nowadays, jarosite has been in the headlines of many researchers [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18] aiming at its use in sulfoaluminate cement production [2], ordinary Portland cement production [7], brick production [5] or silver recovery [8]. Jarosite structure can accommodate many other elements [10][11][12][13][14].…”
Section: Introductionmentioning
confidence: 99%
“…[7,8]. The thermal decomposition of natural and synthetic jarosite produced by zinc industry has been studied for some time [6,[12][13][14], with the use of thermogravimetric analysis and infrared spectroscopy [12][13][14][15][16]. In general, jarosite is known as hydrous mineral with approximately 10 mass% H 2 O in the form of OHgroups [10].…”
Section: Introductionmentioning
confidence: 99%
“…This characteristic makes minerals such as jarosite ideal to incorporate undesirable metallic elements that are also potentially dangerous for the environment. 27 The ion substitutions that alter the parameters of the unit cell of the ideal jarosite have been shown regarding the influence of dissolution and solubility rates. The substitution of H 3 O and Na in site A significantly increases the jarosite solubility compared to jarosite with K, while the substitution of chromate by sulfate decreases the solubility of potassium jarosite.…”
Section: Introductionmentioning
confidence: 99%