Quicklime as an alternative in the photodegradation of contaminants

Joya, M. R.; Ruiz, Jorge Hernando Bautista; Raba, Angela

doi:10.1088/1742-6596/687/1/012044

Cited by 4 publications

(4 citation statements)

References 6 publications

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“…For instance, while precipitated calcium carbonate (PCC), shows diverse range of functionality in paper industry in both paper coating and as paper filler, quicklime and slaked lime are used in pulp and PCC manufacturing. In sugar refining, lime causes coagulation of plant material, allowing it to be more easily separated from the sugar syrup (Devenney et al, 2018;Hwidi et al, 2018;Joya et al, 2016). Dried spent carbide is one of the main solid wastes that constitutes municipal solid waste (MSW) generated in many of metropolitan states in Nigeria.…”

Section: Introductionmentioning

confidence: 99%

“…Chukwudebelu et al (2013) mentioned that spent carbides in Nigeria is generated on daily basis an average of 30 kg per panel beater after the hydrolysis of carbides to generate acetylene gas according to Equation (1). This is a useful component for welding main panels and sub panels of minor-and major accidental vehicles (Joya et al, 2016;Tajudeen et al, 2019;Wanyou et al, 2012). However, the indiscriminate dumping of this waste may affect soil fertility and pH of hydrosphere and its inherent organisms' survival.…”

Section: Introductionmentioning

confidence: 99%

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Trans-Purification of spent carbide via pressure pot into reusable limes: An economical approach

Oyedeko,

Akinyemi,

Ogunyemi

et al. 2023

JART

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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℃ and 1000℃. 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 minutes). 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 (2θ) with a dominant peak (011) plane at 34.1o (2θ). 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―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.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Trans-Purification of spent carbide via pressure pot into reusable limes: An economical approach

Oyedeko,

Akinyemi,

Ogunyemi

et al. 2023

JART

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“…En la literatura existen muchos métodos de síntesis de materiales y también con diferentes dificultades en la obtención de varios tipos de nanopartículas [1], [2], [3], [4], [5], [6], [7]. Sin embargo, no siempre es posible tener acceso a todos los equipos de laboratórios complejos.…”

Section: Introductionunclassified

“…Por eso, desde nuestro punto de vista, se hace necesario cada vez desarrollar más métodos de síntesis con óptimos re-sultados y a un precio razonable en la obtención de nuevos materiales. En las diferentes revistas de investigación se pueden encontrar varios artículos con diferentes técnicas tanto físicas, químicas, Biológicas y Electroquímica en la obtención de materiales [1], [2], [4], [5]. No obstante, en el momento de elegir el método de síntesis de los materiales también hay que tener en cuenta que resultados se quieren obtener de las muestras.…”

Section: Introductionunclassified

Obtención de muestras de óxidos a bajo costo

Joya¹,

Barba-Ortega²,

Paris³

2019

revuin

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Synthesis and morphological characterization of CaSO$$_{4}$$: low-temperature Raman spectroscopy analysis of vibrational modes

Raba-Páez,

Barba-Ortega,

Joya

2024

emergent mater.

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This study delves into the synthesis of CaSO$$_{4}$$ 4 materials using the Pechini and sol-gel methods, followed by heat treatment up to 900 $$^{\circ }$$ ∘ C. X-ray analysis discerned distinct phases, with one method yielding pure orthorhombic anhydrite and the other predominantly producing a mixture of orthorhombic anhydrite and bassanite. Scanning electron microscopy (SEM) showcased homogeneous columnar morphologies for the anhydrite samples and irregularly sized particles for the alternative method. Photoluminescence (PL) measurements demonstrated emissions in the visible range (approximately 400 nm to 700 nm) with differences noted between synthesis methods. Low-temperature Raman spectroscopy (20 K to room temperature) unveiled unique vibrational modes, notably with the orthorhombic phase of anhydrite exhibiting the most intense peak at 1017 cm$$^{-1}$$ - 1 . These powders, intended for thin film applications, bear significance in electronics, optoelectronics, and nanotechnology. A thorough comprehension of their structural and vibrational properties at the microscopic level is paramount for material and device design and optimization.

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Quicklime as an alternative in the photodegradation of contaminants

Cited by 4 publications

References 6 publications

Trans-Purification of spent carbide via pressure pot into reusable limes: An economical approach

Trans-Purification of spent carbide via pressure pot into reusable limes: An economical approach

Obtención de muestras de óxidos a bajo costo

Synthesis and morphological characterization of CaSO$$_{4}$$: low-temperature Raman spectroscopy analysis of vibrational modes

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