Eggshell waste as catalyst: A review

Laca, Amanda; Laca, Adriana; Dı́az, Mario

doi:10.1016/j.jenvman.2017.03.088

Cited by 193 publications

(89 citation statements)

References 55 publications

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“…In this respect, catalysts based on lecithin, 198,199 chitosan 200 or animal-based wool have been used for COC synthesis 100 and natural catalysts/supports are being exploited in other applications. 201,202 Finally, a thorough life-cycle analysis (LCA) of the obtained polymers is required to assess the sustainability of the process. For example, CO 2 -containing materials do not necessarily decrease the net amount of CO 2 since energy is required for their transformations.…”

Section: Current Limitations Future Perspectives and Conclusionmentioning

confidence: 99%

En route to CO₂-containing renewable materials: catalytic synthesis of polycarbonates and non-isocyanate polyhydroxyurethanes derived from cyclic carbonates

Bobbink

Muyden

2019

Chem. Commun.

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Combining CO 2 -chemistry with biomass conversion allows renewable polymeric materials including polycarbonates and polyhydroxyurethanes (PHUs) to be generated. The demand for robust materials with modular properties that can be prepared on an industrial scale is important and, to date, the most important polymeric materials are derived from petrochemicals. These materials inevitably result in CO 2 emissions, and therefore making robust materials from renewable sources will contribute to a more sustainable society. An attractive way to address this challenge is to combine biomass transformations with CO 2 -fixation and material science. An identified target that combines all three aspects involves the preparation of PHUs (or non-isocyanate polyurethanes, NIPUs) via the polymerization of fully renewable cyclic carbonates derived from biomass and CO 2 with a diamine compound that can also been derived from biomass sources. In this review, we critically analyze the progress in catalyst development for the efficient transformation of epoxides and CO 2 to cyclic carbonates and polycarbonates. We also discuss the synthesis of PHUs from cyclic carbonates and diamines (not restricted to fully renewable compounds), including challenges in regiocontrol and biodegradability, as well as the role catalysts play in the synthesis of these polymers.

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Section: Current Limitations Future Perspectives and Conclusionmentioning

confidence: 99%

En route to CO₂-containing renewable materials: catalytic synthesis of polycarbonates and non-isocyanate polyhydroxyurethanes derived from cyclic carbonates

Bobbink

Muyden

2019

Chem. Commun.

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“… atuação como um catalisador benéfico para o meio ambiente, consistindo em material adsorvente para remoção de íons poluentes, como o níquel (LACA, 2017). O níquel é considerado um dos metais mais tóxicos que está presente na água (RAMESH et al, 2016).…”

Section: Introductionunclassified

Obtenção De Óxido De Cálcio a Partir Da Casca De Ovo De Galinha

Vieira

Pinho

Pinheiro

et al. 2017

JCEC

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“…Details of the chemical composition of eggshell powders can be seen in Table 1 which shows a calcium content of more than 50%. Egg shells, as cited in [17] contain around 96% calcium carbonate, 1% calcium phosphate, 1% magnesium carbonate, and other organic materials as well as water. Furthermore, [18] explained that egg shells are environmentally friendly, inexpensive, and available in abundance.…”

Section: Methodsmentioning

confidence: 99%

Performance of Eggshell Powder Addition to Clay Soil for Stabilization

2019

IJRTE

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Abstract: The behavior of clay soil often becomes problematic for the building above it. One problem is its shrinking and swelling behavior which is affected by its water content, which also frequently influences the soil bearing of capacity in holding the load of the building above it. The powder from eggshell which abbreviated as ESP is a food industry waste that is high calcium and not often used for reprocessing. This experiment purposes is to know the effect of adding ESP as a stabilizing material in clay. Soil sample for laboratory testing was carried out from Cot Bagie Village, Blang Bintang, Aceh Besar District, and Aceh Province. From AASHTO classification system, the soil sample is A-7-5 (21) and from USCS system, is organic clay with high plasticity (OH). The percentages of ESP added are 0%, 3%, 6% and 9% of the dry weight of the clay for experiment on laboratory. The Atterberg Limit parameters commonly incline with ESP addition. Based on the standard Proctor test, the original soil has an Optimum Moisture Content (OMC) of 19.8% and a maximum dry unit weight (γ d max ) of 1.367 gr/cm 3 . Overall, adding ESP to the clay sample increases the mechanical properties of soil compared to the sample without ESP. Thus, the use of ESP for stabilization in this experiment can improve the bearing capacity, so that it is beneficial for construction in the field.

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Eggshell waste as catalyst: A review

Cited by 193 publications

References 55 publications

En route to CO₂-containing renewable materials: catalytic synthesis of polycarbonates and non-isocyanate polyhydroxyurethanes derived from cyclic carbonates

En route to CO₂-containing renewable materials: catalytic synthesis of polycarbonates and non-isocyanate polyhydroxyurethanes derived from cyclic carbonates

Obtenção De Óxido De Cálcio a Partir Da Casca De Ovo De Galinha

Performance of Eggshell Powder Addition to Clay Soil for Stabilization

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Eggshell waste as catalyst: A review

Cited by 193 publications

References 55 publications

En route to CO2-containing renewable materials: catalytic synthesis of polycarbonates and non-isocyanate polyhydroxyurethanes derived from cyclic carbonates

En route to CO2-containing renewable materials: catalytic synthesis of polycarbonates and non-isocyanate polyhydroxyurethanes derived from cyclic carbonates

Obtenção De Óxido De Cálcio a Partir Da Casca De Ovo De Galinha

Performance of Eggshell Powder Addition to Clay Soil for Stabilization

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Product

Resources

About

En route to CO₂-containing renewable materials: catalytic synthesis of polycarbonates and non-isocyanate polyhydroxyurethanes derived from cyclic carbonates

En route to CO₂-containing renewable materials: catalytic synthesis of polycarbonates and non-isocyanate polyhydroxyurethanes derived from cyclic carbonates