Recent advances in green processing technologies for valorisation of eggshell waste for sustainable construction materials

Ngayakamo, Blasius; Onwualu, Azikiwe Peter

doi:10.1016/j.heliyon.2022.e09649

Cited by 21 publications

(1 citation statement)

References 89 publications

(121 reference statements)

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“…Eggshell is a waste material with about 7 million tonnes produced annually all over the world [28]. A small amount of this waste is used as fertilizer, household cleansers, and feed for human and animal supplements.…”

Section: Introductionmentioning

confidence: 99%

One‐Pot Synthesis of ZnO‐Activated Eggshell@kaolinite: Sorbents for Phosphate Capture in Water

Bayode,

Badamasi,

Olusola

et al. 2023

Chem Eng & Technol

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The availability of colossal amounts of phosphate in water bodies has led to serious environmental challenges all over the world. In this study, a new adsorbent was synthesized using treated kaolinite clay, pulverized eggshells, and ZnCl2. Surface characterizationof these adsorbents showed the availability of functional moieties, morphological variations, pore sizes, particle sizes, etc. Adsorption of phosphate occurs via multiple mechanisms, comprising ligand exchange, complexation, hydrogen bonding, and electrostatic interaction, among others. The effect of pH, showed that maximum adsorption of 93.3 % was achieved at pH 3.0. It was also shown that these cost‐effective adsorbents could be regenerated in six cycles, hence increasing their applicability.

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Section: Introductionmentioning

confidence: 99%

One‐Pot Synthesis of ZnO‐Activated Eggshell@kaolinite: Sorbents for Phosphate Capture in Water

Bayode,

Badamasi,

Olusola

et al. 2023

Chem Eng & Technol

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Compressive behavior of Habesha eggshell particulate reinforced epoxy composites

et al. 2022

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Environmental pollution has become one of the major challenges to overcome in recent decades. Disposing waste materials has caused great concern by creating a landfill burden and increased environmental pollution. Utilizing or recycling wastes is one of the approaches considered that could bring positive environmental and economic benefits. Eggshells are among the understated waste materials that have great potential to impact the material world. In the present work, Habesha eggshells native to Ethiopia are utilized to prepare epoxy based composites. Five types of composites by varying the Habesha eggshell content (0, 2.5, 5, 7.5, and 10 vol%) are investigated. Physical characterization in terms of density and void content estimations, and eggshell particle size analysis are carried out. Mechanical characterization in terms of normal and quasi-static compression tests are performed. Results infer the density of eggshell particles to increase with increasing eggshell content, while quasi-static compression tests infer that modulus and strength of eggshell/epoxy composites are sensitive to variations in the strain rate. However, irrespective of the strain rates, all the eggshell/epoxy composites depict higher modulus as compared with neat epoxy specimens. At 1.43, 0.1, and 0.001 strain rates, increase in modulus of composites are in the range of 17%-57%, 3%-107%, 30%-114%, respectively. Further, compressive yield strength of all the Habesha eggshell/ epoxy composites is low compared with epoxy specimens for all the strain rates investigated. Scanning electron micrographs of test specimens for different loading conditions reveal reinforcing egg shell particles assists in absorbing the loading effectively.

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3D concrete printing success: an exhaustive diagnosis and failure modes analysis

Oulkhir,

Akhrif,

El Jai

2024

Prog Addit Manuf

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Recent advances in green processing technologies for valorisation of eggshell waste for sustainable construction materials

Cited by 21 publications

References 89 publications

One‐Pot Synthesis of ZnO‐Activated Eggshell@kaolinite: Sorbents for Phosphate Capture in Water

One‐Pot Synthesis of ZnO‐Activated Eggshell@kaolinite: Sorbents for Phosphate Capture in Water

Compressive behavior of Habesha eggshell particulate reinforced epoxy composites

3D concrete printing success: an exhaustive diagnosis and failure modes analysis

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