Iron (II)-calcium carbonate: Precipitation interaction

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dc.contributor.advisorTomson, M. B.en_US
dc.creatorAlsaiari, Hamad A.en_US
dc.date.accessioned2018-12-03T18:31:43Zen_US
dc.date.available2018-12-03T18:31:43Zen_US
dc.date.issued2008en_US
dc.description.abstractLittle attention has been paid to the reaction of mixed calcium-iron carbonate in solutions in comparison with the reaction of other solids such as calcium carbonate, calcium sulfate and barium sulfate. As a result, little information is presently available about the interaction and precipitation of iron carbonate and mixed calcium/iron. It is known that iron carbonate precipitation kinetics is sensitive to temperature. At high temperature (65°C), a sharp drop in iron concentration was observed during the first minutes in a solution devoid of calcium. And the drop was gradual at 55°C. However, adding calcium to the solution under the same conditions had a great influence in reducing the drop in iron concentration. The apparent increase in the solubility of ferrous iron was proportional to the concentration of calcium present in the solution. In addition, presence of calcium in solution also reduced the effect of temperature on siderite precipitation. On the other hand, the presence of iron did not show significant impact in the solubility of calcium. The cumulative and instantaneous molar ratio of ferrous iron to calcium in the precipitated solid was found to be varied based on the molar ratio of calcium and iron ions in the inflow stream and the amount of siderite that initially precipitated. The relation between the molar ratio of the calcium to iron in solid and in influent was calculated. It found to be 2.39. The X-ray diffraction analysis showed that the presence of ferrous iron inhibited the growth of calcite but did not prevent the formation of aragonite. The crystal shape of siderite, showed by scanning electron microscope, was completely different from that of calcite and the crystal shape of the solid collected in the co-existence of ferrous iron and calcium varied based on the molar ratio of iron to calcium in the solution.en_US
dc.format.extent119 ppen_US
dc.identifier.callnoTHESIS C.E. 2008 ALSAIARIen_US
dc.identifier.citationAlsaiari, Hamad A.. "Iron (II)-calcium carbonate: Precipitation interaction." (2008) Master’s Thesis, Rice University. <a href="https://hdl.handle.net/1911/103597">https://hdl.handle.net/1911/103597</a>.en_US
dc.identifier.digital304510164en_US
dc.identifier.urihttps://hdl.handle.net/1911/103597en_US
dc.language.isoengen_US
dc.rightsCopyright is held by the author, unless otherwise indicated. Permission to reuse, publish, or reproduce the work beyond the bounds of fair use or other exemptions to copyright law must be obtained from the copyright holder.en_US
dc.subjectGeologyen_US
dc.subjectPetroleum productionen_US
dc.subjectEnvironmental engineeringen_US
dc.subjectApplied sciencesen_US
dc.subjectEarth sciencesen_US
dc.titleIron (II)-calcium carbonate: Precipitation interactionen_US
dc.typeThesisen_US
dc.type.materialTexten_US
thesis.degree.departmentChemical and Biomolecular Engineeringen_US
thesis.degree.disciplineEngineeringen_US
thesis.degree.grantorRice Universityen_US
thesis.degree.levelMastersen_US
thesis.degree.nameMaster of Scienceen_US
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