Spectroscopic Analysis of Chemical Compounds Derived from the Calcination of Snail Shells Waste at Different Temperatures

Ouafi, Redouane; Atemni, Ibrahim; Mehdaoui, Imane; Asri, Meryem; Taleb, M.; Raïs, Z.

doi:10.1007/s42250-021-00277-1

Cited by 8 publications

(18 citation statements)

References 47 publications

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“…We can say that the white colour appeared thanks to the SSP calcined in the state (K-L) and remained stable in temperatures 800℃ and 900℃. Therefore, we suggest it was due to a change in the treated SSP's composition and morphology [11].…”

Section: Visual Aspectmentioning

confidence: 91%

“…Calcium oxide crystals CaO formed due to the carbonation of Ca(OH)2 without an organic substrate [10]. The major difference between the snails and eggs shell is in their composition, the eggs shell is rich in calcite, and when chemical treatment is made, they form calcium oxide phases [11]. While the snail shell is rich in aragonite, transforms to calcite polymorph, decomposes to calcium oxide, and liberates carbon dioxide [4,11].…”

Section: Introductionmentioning

confidence: 99%

“…The major difference between the snails and eggs shell is in their composition, the eggs shell is rich in calcite, and when chemical treatment is made, they form calcium oxide phases [11]. While the snail shell is rich in aragonite, transforms to calcite polymorph, decomposes to calcium oxide, and liberates carbon dioxide [4,11]. The structure of the snail shell is constituted mainly of 3 layers.…”

Section: Introductionmentioning

confidence: 99%

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Physico-chemical characterization of snail shells powder prepared by mechanochemical processes and thermal treatment

Karaoui¹,

Hsissou

Alami³

et al. 2023

J Met Mater Miner

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Natural particles are the most abundant resources exist in nature. Bio-sources of CaCO3 particles have attracted the attention of researchers for multiple cosmetics, industrial, and medical applications. This work investigates the structural evolution of CaCO3 containing in snail shell particles prepared by a mechanochemical process using methods of characterization as well as Differential scanning calorimeter (DSC), Thermogravimetric analysis (TGA), X-ray diffraction (X-RD), Fourier transformation infra-red (FT-IR), and Scanning microscopy equipped with Energy-dispersive X-Ray spectroscopy (SEM-EDXS). The result obtained from the above analysis indicates that SSP calcined between 200℃ to 400℃ undergoes an elimination of water molecules, followed by a phase transformation from Aragonite to CaCO3 Calcite. At 800℃, the SSP decomposes CaCO3, giving rise to calcium oxide crystals CaO, which release CO2 molecules. These eliminations and transformations represent a loss of 47.08% of the initial mass at 800℃. The morphological analysis shows the surface of SSP calcined at 800℃ with CaO/CaCO3 crystal formation. Also, the mechanochemical process leads to obtaining an SSP with a size between 3.311 µm to 10.140 µm. Snail shells can be a natural source of CaCO3 and CaO, thanks to their ease of extraction and processing.

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Section: Visual Aspectmentioning

confidence: 91%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Physico-chemical characterization of snail shells powder prepared by mechanochemical processes and thermal treatment

Karaoui¹,

Hsissou

Alami³

et al. 2023

J Met Mater Miner

View full text Add to dashboard Cite

show abstract

“…The thermal treatment range has a large range of values to find the right temperature for each shell. The results of a temperature range study from 200 to 1000 °C to compare the particle evaluation of different raw materials and pyrolysis materials revealed that a calcined snail shell at 200 °C was aragonite polymorphs, calcite at 400–600 °C, and calcium oxide at 800–1000 °C [ 92 ].…”

Section: Popular Biochar-modification Methodologies For Snail Shell M...mentioning

confidence: 99%

“…Analysis of heavy-metal composition in snail shells found that iron content was highest for other metal components, such as zinc, manganese, copper, and iron [ 91 ]. Other minor components, Cr, P, Al, Ni, Mg, Si, and K, also exist in snail shells [ 92 , 93 ]. This is also a demonstration of the effective use of snail shells as coagulant materials in wastewater treatment.…”

Section: Property Structure and Process Of Snail Shell As Bio-adsorbentmentioning

confidence: 99%

A Critical Review of Snail Shell Material Modification for Applications in Wastewater Treatment

2023

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Sea material is becoming increasingly popular and widely used as an adsorbent in wastewater treatment. Snail shell, a low-cost and natural animal waste material, has been shown to have a high calcium content (>99%) and a large potential surface area for the development of sustainable adsorbents. This paper presents a novel synthesis of methods for using snail shell absorbent materials in the treatment of wastewater containing heavy metals, textile dyes, and other organic substances. Modified biochar made from snail shells has gained popularity in recent years due to its numerous benefits. This paper discusses and analyzes modification methods, including impregnating with supplements, combining other adsorbents, synthesis of hydroxyapatite, co-precipitation, and the sol–gel method. The analysis of factors influencing adsorption efficiency revealed that pH, contact time, temperature, initial concentration, and adsorbent dose all have a significant impact on the adsorption process. Future research directions are also discussed in this paper as a result of presenting challenges for current snail adsorbents.

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Thermal, flow, and mechanical properties of composites based on polystyrene (PS) and snail shell powder (SSP) biofiller (PS/SSP)

Karaoui

Hsissou²,

Alami³

et al. 2023

Iran Polym J

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Spectroscopic Analysis of Chemical Compounds Derived from the Calcination of Snail Shells Waste at Different Temperatures

Cited by 8 publications

References 47 publications

Physico-chemical characterization of snail shells powder prepared by mechanochemical processes and thermal treatment

Physico-chemical characterization of snail shells powder prepared by mechanochemical processes and thermal treatment

A Critical Review of Snail Shell Material Modification for Applications in Wastewater Treatment

Thermal, flow, and mechanical properties of composites based on polystyrene (PS) and snail shell powder (SSP) biofiller (PS/SSP)

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