Dolomite dissolution in aqueous solutions in the presence of nucleotides and their structural components at 25 °C and pCO2 ~ 1 atm

Veetil, Sanoopkumar Puthiya; Mucci, Alfonso; Arakaki, Takemitsu

doi:10.1016/j.chemgeo.2017.05.022

Cited by 8 publications

(5 citation statements)

References 90 publications

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“…In the time interval 30–60 days, unlike the continuous increase in Mg 2+ concentration in the absence of CO 2 , it does not change significantly in the experiments conducted in the presence of CO 2 . Both Ca 2+ and

{HCO}_{3}^{-}

inhibit the dissolution of dolomite 32,39,40 . Despite the reduction of Ca 2+ concentration in CO 2 ‐treated experiments in the time interval 30–60 days (Fig.…”

Section: Resultsmentioning

confidence: 87%

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Experimental investigation of CO₂–brine–rock interactions in relation with CO₂ sequestration in an Iranian oil reservoir

2020

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The main purpose of this study is to evaluate the feasibility of geologic CO 2 sequestration in terms of CO 2-brine-rock interactions in Ramin oil field, Iran. Static experiments were conducted with carbonate rocks at 70°C and atmospheric pressure for 14, 30, and 60 days. CO 2-brine-rock interactions were inferred from the evaluation of Ca 2+ , Mg 2+ , Cl − , and SO 2− 4 concentrations and a thorough characterization of the carbonate rocks before and after treatment. Scanning electron microscopy (SEM) micrographs revealed the formation of dissolution pits and the growth of new structures. Energy dispersive X-ray spectroscopy (EDS) and X-ray diffraction (XRD) indicated these minerals to be calcite. Porosity of the carbonate rocks increased from an initial value of 4.72% to the maximum value of 11.83%. Then, it decreased to a value of 5.48% until the end of the experiments, that is, 60 days. Chemical analysis of brine suggested the precipitation and dissolution of calcium sulfate. In addition, dolomite dissolution and halite precipitation/dissolution were inferred. Calcite precipitation and porosity reduction suggested that CO 2 can be stored via mineral entrapment in the Ramin oil field, which is desired from the perspective of CO 2 geologic sequestration.

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{HCO}_{3}^{-}

inhibit the dissolution of dolomite 32,39,40 . Despite the reduction of Ca 2+ concentration in CO 2 ‐treated experiments in the time interval 30–60 days (Fig.…”

Section: Resultsmentioning

confidence: 87%

“…2d, the Mg 2+ concentration in CO 2 ‐treated experiments is higher than the CO 2 ‐free experiments during the first 30 days. This can be attributed to higher dolomite dissolution rate at lower solution pH 29,38,39 . In fact, because of lower pH in CO 2 ‐treated experiments (Fig.…”

Section: Resultsmentioning

confidence: 88%

Experimental investigation of CO₂–brine–rock interactions in relation with CO₂ sequestration in an Iranian oil reservoir

2020

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“…As mentioned, Angera stone is mainly composed of dolomite (CaMg(CO 3 ) 2 ) and its dissolution in water solution is nearly the stoichiometric ratio ([Ca 2+ ]/[Mg 2+ ] = 1) [22][23][24]; however, in presence of calcium or phosphate ions in solution, an enrichment of magnesium in solution occurs, up to a ratio of [Ca 2+ ]/[Mg 2+ ] = 0.32 [24].…”

Section: Diammonium Hydrogenphosphate and Dolomitic Matrixmentioning

confidence: 99%

Investigation of Calcium and Magnesium Phosphate Crystals in Stones Treated with Diammonium Hydrogen Phosphate Conservation Product: Potential of Micro-Raman Spectroscopy

Conti,

Cutard,

Botteon

et al. 2023

Crystals

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This study is aimed at investigating crystals (calcium and magnesium phosphates) formed due the interaction of an inorganic conservation treatment (diammonium hydrogen phosphate—DAP) with carbonatic (calcitic and dolomitic) stones through micro-Raman Spectroscopy. The addressed questions concern (i) the identification of magnesium and calcium phosphate minerals crystallized within dolomitic stone samples with a different degree of conservation state and treated with two different DAP solution molarities and (ii) the distinction of complex calcium phosphate mixtures (hydroxyapatite—HAP and octa calcium phosphate—OCP) crystallized within a calcarenite stone treated with DAP. A statistically relevant number of Raman spectra have been acquired in sample cross sections and curve fitting analysis has been performed for the in-depth interpretation of data. The outcomes indicate that Raman Spectroscopy is an effective alternative method for the identification of poorly crystalline calcium phosphates (not easily detectable with X-ray diffraction), even when scarcely present in mixture with magnesium phosphates. Evidence of the Raman analytical capability and high potential to distinguish HAP and OCP in calcitic stones are also presented and discussed.

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“…Studies show the feasibility of magnesium extraction using hydrometallurgy from dolomite, magnesite, dolomite phosphate rock, nickel laterite, and magnesite tailings (Abali et al, 2006;Karidakis, 2005;Puthiya et al, 2017;Solihin et al, 2018;Xiong et al, 2014).…”

Section: Dolomite and Magnesiummentioning

confidence: 99%

“…The compounds were acquired as solid/precipitated; were CaSO4 and PbSO4 in the nonleached fraction and was leached Mg and Cd in a pH <2. In the dolomite leaching, some challenges are found due to the control of the partial pressure of the CO2 generated, as well as the pH measurement, because there is a disparity in the values of solubility product of dolomite in an acid medium above room temperature (Abali et al, 2006;Puthiya et al, 2017). The other analysis step was carried out with the non-leached fraction with acid digestion with the microwave aid.…”

Section: Leaching Testsmentioning

confidence: 99%

Recovery of magnesium sulfate from a zinc ore flotation tailing using hydrometallurgical route.

Costa¹

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por aceitar ser minha orientadora, pela compreensão em momentos atípicos, e pelas contribuições e acompanhamento do trabalho.À Dra. Tatiana Scarazzato, pelas dicas como pesquisadora durante toda sua jornada de coorientação, pela paciência e amizade durante esse tempo, deixando o trabalho mais leve durante essa fase tão importante.Ao Prof. Dr. Jorge Alberto Soares Tenório, por disponibilizar o laboratório para o desenvolvimento deste trabalho, pelos ensinamentos e questionamentos que me fez crescer como pesquisadora e pessoa.À empresa Votorantim Metais/Nexa Resources pela disponibilização do material a ser estudado e pela confiança.À técnica do laboratório da Escola Politécnica da USP Ana Carolina, que sempre se dispôs a ajudar e ensinar química para um trabalho melhor. Assim como, a amizade durante todo esse tempo de aprendizado.Ao meu noivo, Nicholas Braun Rodrigues, que nunca mediu esforços para me incentivar, me fazendo acreditar sempre no melhor. Por todos os momentos de descontração e apoio. À Paula Aliprandini pelas discussões a cada dia sobre etapas do trabalho, conversas que me fizeram crescer no mestrado e, pelas conversas que deixaram esse tempo de pesquisa mais leves acompanhados de um bom café.Ao Caio e a Yara pelas conversas e momentos extrovertidos. Pela motivação e apoio a cada etapa turbulenta, assim como as boas risadas em momentos de descontração. À Jaqueline que se fez presente assim que chegou ao laboratório disposta a ajudar. À toda equipe do Laboratório de Reciclagem, Tratamento de Resíduos e Metalurgia Extrativa (LAREX), que se tornaram amigos durante um momento cheio de desafios como o mestrado, aprimorando, portanto, o conhecimento nesta etapa.

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Dolomite dissolution in aqueous solutions in the presence of nucleotides and their structural components at 25 °C and pCO2 ~ 1 atm

Cited by 8 publications

References 90 publications

Experimental investigation of CO₂–brine–rock interactions in relation with CO₂ sequestration in an Iranian oil reservoir

Experimental investigation of CO₂–brine–rock interactions in relation with CO₂ sequestration in an Iranian oil reservoir

Investigation of Calcium and Magnesium Phosphate Crystals in Stones Treated with Diammonium Hydrogen Phosphate Conservation Product: Potential of Micro-Raman Spectroscopy

Recovery of magnesium sulfate from a zinc ore flotation tailing using hydrometallurgical route.

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Dolomite dissolution in aqueous solutions in the presence of nucleotides and their structural components at 25 °C and pCO2 ~ 1 atm

Cited by 8 publications

References 90 publications

Experimental investigation of CO2–brine–rock interactions in relation with CO2 sequestration in an Iranian oil reservoir

Experimental investigation of CO2–brine–rock interactions in relation with CO2 sequestration in an Iranian oil reservoir

Investigation of Calcium and Magnesium Phosphate Crystals in Stones Treated with Diammonium Hydrogen Phosphate Conservation Product: Potential of Micro-Raman Spectroscopy

Recovery of magnesium sulfate from a zinc ore flotation tailing using hydrometallurgical route.

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Experimental investigation of CO₂–brine–rock interactions in relation with CO₂ sequestration in an Iranian oil reservoir

Experimental investigation of CO₂–brine–rock interactions in relation with CO₂ sequestration in an Iranian oil reservoir