Industrial And Geological Study Of Protozoic Metacarbonate Rocks From Southern And Central Nigeria

The metacarbonate deposits in the southern Nigeria intercalated with calc-silicate gneiss, intrusive granite and migmatite gneiss rocks are of Proterozoic age. The study focused on examining the suitability of the Okpella and Emiworo metacarbonate via characterization and synthesis for industrial ap...

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Main Author:	Onimisi, Jimoh Abdullateef
Format:	Thesis
Language:	English
Published:	2017
Subjects:	T Technology
Online Access:	http://eprints.usm.my/47205/1/Industrial%20And%20Geological%20Study%20Of%20Protozoic%20Metacarbonate%20Rocks%20From%20Southern%20And%20Central%20Nigeria.pdf
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spelling	my-usm-ep.472052021-11-17T03:42:14Z Industrial And Geological Study Of Protozoic Metacarbonate Rocks From Southern And Central Nigeria 2017-11-01 Onimisi, Jimoh Abdullateef T Technology TA401-492 Materials of engineering and construction. Mechanics of materials The metacarbonate deposits in the southern Nigeria intercalated with calc-silicate gneiss, intrusive granite and migmatite gneiss rocks are of Proterozoic age. The study focused on examining the suitability of the Okpella and Emiworo metacarbonate via characterization and synthesis for industrial applications. This study is based on X-ray Diffractometry (XRD), Scanning electron microscopy (SEM), polarizing and refracted light microscopy; chemical and differential thermal analysis/thermal gravimetric analysis (DTA/TGA) and also the physical properties of the raw marble resources and derived product. Calcite is the dominant phase while silica is the subordinating component of Okpella marble. The Okpella metacarbonate characterized by minimal water absorption, appreciable compressive strength, high loss of ignition (LOI) and bulk specific gravity (SG). The quicklime calcined at 900°C and 1100°C for 60, 90 and 120 minutes of soaking time were unreactive. However, the quicklime calcined at 1000°C exhibited high reactivity. On the other hand, the phase characteristics of the Emiworo marble show that dolomite is the dominant mineral with low silicates. Reactivity of the quicklime measured after calcination at different temperatures revealed that only the quicklime produced in 1 hour at 950°C and 1000°C was found to be more reactive. Physical properties and comparative data show that the Emiworo marble displays lower water absorption, lower compressive strength, and higher loss on ignition compared to the Okpella marble. The marble has affluent industrial applications characteristics attributed to its established microstructure, chemical composition and thermal decomposition behavior. Aloe-Vera extract was found to have an effect on the precipitated calcium carbonate (PCC) morphology, particle sizes, and thermal characteristics of the synthesized PCC. Utilizing a continuous unique tubular reactor under ambient temperature and 1 L/min CO2 flowrate, rhombohedral calcite polymorph and aragonite polymorph composite with polycrystalline dumb bell-like structure, having radiating ends was produced from Okpella marble. However, uniform hierarchical aragonite precipitated calcium carbonate stacked from nanoparticles was synthesized using a natural occurring Emiworo dolomite. The tainted Mg influence on resultant PCC purity was averted via D-glucose extraction of dolomite constituent. 2017-11 Thesis http://eprints.usm.my/47205/ http://eprints.usm.my/47205/1/Industrial%20And%20Geological%20Study%20Of%20Protozoic%20Metacarbonate%20Rocks%20From%20Southern%20And%20Central%20Nigeria.pdf application/pdf en public phd doctoral Universiti Sains Malaysia Pusat Pengajian Kejuruteraan Bahan & Sumber Mineral
institution	Universiti Sains Malaysia
collection	USM Institutional Repository
language	English
topic	T Technology T Technology
spellingShingle	T Technology T Technology Onimisi, Jimoh Abdullateef Industrial And Geological Study Of Protozoic Metacarbonate Rocks From Southern And Central Nigeria
description	The metacarbonate deposits in the southern Nigeria intercalated with calc-silicate gneiss, intrusive granite and migmatite gneiss rocks are of Proterozoic age. The study focused on examining the suitability of the Okpella and Emiworo metacarbonate via characterization and synthesis for industrial applications. This study is based on X-ray Diffractometry (XRD), Scanning electron microscopy (SEM), polarizing and refracted light microscopy; chemical and differential thermal analysis/thermal gravimetric analysis (DTA/TGA) and also the physical properties of the raw marble resources and derived product. Calcite is the dominant phase while silica is the subordinating component of Okpella marble. The Okpella metacarbonate characterized by minimal water absorption, appreciable compressive strength, high loss of ignition (LOI) and bulk specific gravity (SG). The quicklime calcined at 900°C and 1100°C for 60, 90 and 120 minutes of soaking time were unreactive. However, the quicklime calcined at 1000°C exhibited high reactivity. On the other hand, the phase characteristics of the Emiworo marble show that dolomite is the dominant mineral with low silicates. Reactivity of the quicklime measured after calcination at different temperatures revealed that only the quicklime produced in 1 hour at 950°C and 1000°C was found to be more reactive. Physical properties and comparative data show that the Emiworo marble displays lower water absorption, lower compressive strength, and higher loss on ignition compared to the Okpella marble. The marble has affluent industrial applications characteristics attributed to its established microstructure, chemical composition and thermal decomposition behavior. Aloe-Vera extract was found to have an effect on the precipitated calcium carbonate (PCC) morphology, particle sizes, and thermal characteristics of the synthesized PCC. Utilizing a continuous unique tubular reactor under ambient temperature and 1 L/min CO2 flowrate, rhombohedral calcite polymorph and aragonite polymorph composite with polycrystalline dumb bell-like structure, having radiating ends was produced from Okpella marble. However, uniform hierarchical aragonite precipitated calcium carbonate stacked from nanoparticles was synthesized using a natural occurring Emiworo dolomite. The tainted Mg influence on resultant PCC purity was averted via D-glucose extraction of dolomite constituent.
format	Thesis
qualification_name	Doctor of Philosophy (PhD.)
qualification_level	Doctorate
author	Onimisi, Jimoh Abdullateef
author_facet	Onimisi, Jimoh Abdullateef
author_sort	Onimisi, Jimoh Abdullateef
title	Industrial And Geological Study Of Protozoic Metacarbonate Rocks From Southern And Central Nigeria
title_short	Industrial And Geological Study Of Protozoic Metacarbonate Rocks From Southern And Central Nigeria
title_full	Industrial And Geological Study Of Protozoic Metacarbonate Rocks From Southern And Central Nigeria
title_fullStr	Industrial And Geological Study Of Protozoic Metacarbonate Rocks From Southern And Central Nigeria
title_full_unstemmed	Industrial And Geological Study Of Protozoic Metacarbonate Rocks From Southern And Central Nigeria
title_sort	industrial and geological study of protozoic metacarbonate rocks from southern and central nigeria
granting_institution	Universiti Sains Malaysia
granting_department	Pusat Pengajian Kejuruteraan Bahan & Sumber Mineral
publishDate	2017
url	http://eprints.usm.my/47205/1/Industrial%20And%20Geological%20Study%20Of%20Protozoic%20Metacarbonate%20Rocks%20From%20Southern%20And%20Central%20Nigeria.pdf
_version_	1747821754755055616

Industrial And Geological Study Of Protozoic Metacarbonate Rocks From Southern And Central Nigeria

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