<?xml version="1.0" encoding="ISO-8859-1"?><article xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<front>
<journal-meta>
<journal-id>1665-6423</journal-id>
<journal-title><![CDATA[Journal of applied research and technology]]></journal-title>
<abbrev-journal-title><![CDATA[J. appl. res. technol]]></abbrev-journal-title>
<issn>1665-6423</issn>
<publisher>
<publisher-name><![CDATA[Universidad Nacional Autónoma de México, Instituto de Ciencias Aplicadas y Tecnología]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S1665-64232023000600945</article-id>
<article-id pub-id-type="doi">10.22201/icat.24486736e.2023.21.6.2153</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Trans-purification of spent carbide via pressure pot into reusable limes: An economical approach]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Oyedeko]]></surname>
<given-names><![CDATA[K. F. K.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Akinyemi]]></surname>
<given-names><![CDATA[O. P.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ogunyemi]]></surname>
<given-names><![CDATA[O. I.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Olaleru]]></surname>
<given-names><![CDATA[S. A.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Rickette]]></surname>
<given-names><![CDATA[M. S.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ejidike]]></surname>
<given-names><![CDATA[I. P.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
<xref ref-type="aff" rid="Aaf"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Lagos State University Department of Chemical Engineering ]]></institution>
<addr-line><![CDATA[Ojo Lagos]]></addr-line>
<country>Nigeria</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Yaba College of Technology Department of Chemical Engineering ]]></institution>
<addr-line><![CDATA[ Lagos]]></addr-line>
<country>Nigeria</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Yaba College of Technology Department of Physical Science ]]></institution>
<addr-line><![CDATA[ Lagos]]></addr-line>
<country>Nigeria</country>
</aff>
<aff id="Af4">
<institution><![CDATA[,Anchor University Department of Chemical Sciences ]]></institution>
<addr-line><![CDATA[ Lagos]]></addr-line>
<country>Nigeria</country>
</aff>
<aff id="Af5">
<institution><![CDATA[,University of South Africa Department of Chemistry ]]></institution>
<addr-line><![CDATA[Florida ]]></addr-line>
<country>South Africa</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>00</month>
<year>2023</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>00</month>
<year>2023</year>
</pub-date>
<volume>21</volume>
<numero>6</numero>
<fpage>945</fpage>
<lpage>951</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S1665-64232023000600945&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S1665-64232023000600945&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S1665-64232023000600945&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract About 20-30 kg of spent carbides is averagely generated per panel beater daily in Nigeria (West Africa). In this study, pure limes (quicklime and slaked lime) from spent carbide were obtained via lime cycle - calcination/ hydration. The spent carbide (wet) was collected from the panel beater's workshop at Yaba College of Technology, Lagos, Nigeria. 400 g to 600 g from these sieved particles were subjected to calcination at temperature ranges 950&#8451; and 1000&#8451;. Slaking or hydration of 20 g of the calcined spent carbide was conducted in a pressure pot by varying water to sample ratio at separate times (30, 60, and 90 min.). The obtained limes, CaO were characterized only by FTIR, and Ca(OH)2 was characterized by XRD and FTIR. The XRD spectrum of the synthesized slaked limes showed major peaks around 18o to 71.8o (2&#952;) with a dominant peak (011) plane at 34.1o (2&#952;). The crystallite size was found to be 56.55 nm, 56.56 nm, and 42.42 nm for samples A90, A60, and A30, respectively. FTIR spectroscopy of prepared samples (A30 and A60) showed sharp peaks viz-a-viz sample A90 at wave number 3637 cm-1 which is assigned to the presence of O&#8213;H stretching. The observed FTIR peak bands of the synthesized CaO at temperatures of 950oC (B950) and 1000oC (B1000) were found between the range of 1401.47 cm-1 and 998.92 cm-1, the presence of water molecules on the surface of the powder this also noticed in commercial CaO.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[Spent carbide]]></kwd>
<kwd lng="en"><![CDATA[limes]]></kwd>
<kwd lng="en"><![CDATA[FT-IR]]></kwd>
<kwd lng="en"><![CDATA[purification]]></kwd>
<kwd lng="en"><![CDATA[pressure pot]]></kwd>
</kwd-group>
</article-meta>
</front><back>
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