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All Journal Budapest International Research in Exact Sciences (BirEx Journal) Journal Pesona Indonesia
Odeh, Calistus Princewill
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Civil Engineering, Building, Construction & Architecture Physics Transportation

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Firing Temperature Effect on the Thermo-structural Properties of Clay for Refractory Purposes: A Comparative Study on Nigerian Clay Deposits Obialo, Nwokeocha Tochukwu; Okolie, Paul Chukwulozie; Odeh, Calistus Princewill; Okoye, Chibuzo Ndubuisi; Uzodinma, Madumere Augustine
Budapest International Research in Exact Sciences (BirEx) Journal Vol 7, No 2 (2025): Budapest International Research in Exact Sciences, April
Publisher : Budapest International Research and Critics University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33258/birex.v7i2.8045

Abstract

A comparative study on firing temperature effect on the thermo-structural properties of clay for refractory purposes, have been carried out on three Nigerian clay deposits (Mgbom, Amokwe and Amagu Ishiagu clay deposits). Three firing temperatures; 900, 1100 and 1200oC were considered in the study. Standard clay preparation procedures were employed in setting up the experiment, these include; crushing, soaking, drying, grinding, sieving, blending and moulding. Six refractory property tests (linear shrinkage, bulk density, apparent porosity, water absorption, thermal shock resistance and refractoriness) were carried out on the prepared clay according to ASTM standards. For the purpose of microstructural characteristics, the Scanning Electron Microscope (SEM) test was also conducted. The test result gave a 27.26 - 42.53N/mm2, 4.09 – 9.27% 1.66 – 2.07g/cm3 1.01 – 15.65% 19-28 cycles for modulus of rupture, linear shrinkage, bulk density, apparent porosity and thermal shock respectively. The microstructural analysis showed a level of similarity between that of Mgbom and Amagu while that of Amokwe gave a number of visible pores. From the analysis of the obtained results 1200oC firing temperature was recommended among the studied temperatures.
Analysis of heavy metal concentrations of ofia-imoka river inAwka town Southeast Nigeria for domestic purposes Nwanna, Emmanuel Chukwudi; Maduegbuna, John Ikedinachukwu; Odeh, Calistus Princewill; Ekwueme, Godspower Onyekachukwu; Okadigwe, Emmanuel Igwebudu
Jurnal Pesona Indonesia Vol. 2 No. 2 (2025): JPI 2025
Publisher : Institut Teknologi Pendidikan Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.71436/jpi.v2i2.39

Abstract

Recognizing the heavy metal attributes of water is essential when handling resources, evaluating its purity, as well as tackling environmental issues. Water is an essential part of life and a vital resource for industrial, residential, and environmental uses. Because of the possible connections to cancer and other illnesses, the presence of heavy metal poisoning in rivers poses major health hazards through ingestion and skin exposure. The river's typical usage for drinking, cooking, and other domestic tasks are restricted since it flows via a channel that may have become polluted by manufacturing, agriculture, among other human activity. The sample was gathered, and its degree of contamination by heavy metals as well as appropriateness for household use were assessed. Lead (Pb), cadmium (Cd), mercury (Hg), chromium (Cr), iron (Fe), molybdenum (Mo), manganese (Mn), arsenic (As), cobalt (Co), nickel (Ni), silver (Ag), and calcium (Ca) are among the characteristics that were examined. Atomic Absorption Spectrometer (AAS) were used to analyze the metal content in water samples and contrasted with World Health Organization (WHO) permissible limits. All of the metrics, with the exception of nickel mg/l (0.011) and mercury mg/l (0.003), were found to be below WHO permissible levels. The administration of agricultural chemical products, growth in urbanization, industrialization, mining for minerals, and natural factors such as weathering of rocks are the main causes of this contamination. As a means to tackle pollution from heavy metals and safeguard human health, the study highlights the need for ongoing surveillance and focused mitigation techniques. Given the recommended values, the Ofia-Imoka river is unfit for human consumption since the levels of nickel, and mercury exceeded what the WHO considers safe.
Co-Authors Ekwueme, Godspower Onyekachukwu Maduegbuna, John Ikedinachukwu Nwanna, Emmanuel Chukwudi Obialo, Nwokeocha Tochukwu Okadigwe, Emmanuel Igwebudu Okolie, Paul Chukwulozie Okoye, Chibuzo Ndubuisi Uzodinma, Madumere Augustine