The environmental sustainability of calcined calcium phosphates production from the milling of eggshell wastes and phosphoric acid

Francis, A. A.; Rahman, Moksadur

doi:10.1016/j.jclepro.2016.08.029

Cited by 48 publications

(27 citation statements)

References 26 publications

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“…Previous research suggests that calcite, aluminum hydroxides/oxides, and iron hydroxides/oxides are significant phosphate sorbents (Karageorgiou et al., 2007; Lai et al., 2016). Waste eggshells—generally from residences, restaurants, and bakeries—consist primarily of calcium carbonate (Francis and Abdel Rahman, 2016; Guo et al., 2017) and are considered as a waste disposal and landfill problem. In recent years, different studies have explored useful applications for eggshells (Elabbas et al., 2016; Francis and Abdel Rahman, 2016).…”

Section: Introductionmentioning

confidence: 99%

“…Waste eggshells—generally from residences, restaurants, and bakeries—consist primarily of calcium carbonate (Francis and Abdel Rahman, 2016; Guo et al., 2017) and are considered as a waste disposal and landfill problem. In recent years, different studies have explored useful applications for eggshells (Elabbas et al., 2016; Francis and Abdel Rahman, 2016). Those studies concluded that eggshell may be useful as a fertilizer and a feed additive for livestock.…”

Section: Introductionmentioning

confidence: 99%

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Statistical optimization and batch studies on adsorption of phosphate using Al-eggshell

Yan

Zhang

et al. 2017

Adsorption Science & Technology

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This work provides a simple and convenient method to manufacture the sorbent of Al-eggshell. The influence of AlCl 3 concentration and pH values as well as the dosage of sorbent and their interactions on adsorption of phosphate was investigated. Therefore, Box-Behnken design coupled with response surface method was adopted to explore the empirical model for phosphate species removal. It was observed that there is an optimal point, C(AlCl 3 )(0.29 mol/l)-pH(6.12)-dosage(6.72 g/l), for the goal of maximizing phosphate species removal. The second-order polynomial model for phosphate reduction was given asContour pictures implied that the interaction between pH values and sorbent dosage was the strongest, followed by C(AlCl 3 ) versus dosage and C(AlCl 3 ) versus pH. The adsorption of phosphate data had a good agreement with the Freundlich isotherm equation at 313 and 323 K. Otherwise, Langmuir-Freundlich model described the best fitness at the temperature of 293, 298, and 303 K. The process of adsorption of phosphate on Al-eggshell fitted a pseudo-second-order kinetic equation, which indicates the exothermic reaction. In conclusion, the present work suggests Al-eggshell as an efficient and environmental friendly sorbent for phosphate species adsorption from aqueous solutions.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Statistical optimization and batch studies on adsorption of phosphate using Al-eggshell

Yan

Zhang

et al. 2017

Adsorption Science & Technology

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“…Eggshells as biological waste are generally dumped in landfills or discarded. This causes many severe environmental problems including malodor, bugs, and noise pollution [30,31]. Simultaneously, the acceleration of urbanization and the increase in infrastructure demand have caused a scarcity of natural resources.…”

Section: Methodsmentioning

confidence: 99%

Research on High- and Low-Temperature Characteristics of Bitumen Blended with Waste Eggshell Powder

Wang

Zhang

et al. 2021

Materials

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The sustainability of resources is presently a major global concern. Sustainable construction materials can be produced by applying biological waste to engineering. Eggshells, as biological waste, are usually dumped in landfills or discarded. This causes many environmental problems including malodor, noise pollution, and serious waste of resources. To solve these problems, this study combined eggshell waste with bitumen materials for bio-roads construction. This paper investigated the impact of biological waste eggshell powder on the high- and low-temperature characteristics of bitumen materials. Scanning electron microscopy (SEM) revealed the microstructure of eggshell powder. The interaction between eggshell powder and asphalt was analyzed using Fourier transform infrared spectroscopy (FT-IR). The high- and low-temperature characteristics were investigated using conventional performance tests, and dynamic shear rheometer (DSR) and bending beam rheometer (BBR) experiments. These results indicate that eggshell powder (1) has a rough and porous microstructure; (2) has no apparent chemical reaction with asphalt; and (3) improves the consistency, hardness, and high-temperature characteristics. However, it reduces the plastic deformation capacity of asphalt, and the low-temperature crack resistance of asphalt cannot be improved. The research demonstrated that the application of eggshell powder in asphalt is feasible and has long-term resource and environmental advantages.

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“…In the same context, Barakat [117] studied the effect of pH on Cu adsorption and demonstrate that A4 zeolite is efficiently used to adsorb Cu(II), at natural and alkaline pH. At the same time, Francis et al [115,118] studied activated phosphate, zirconium phosphate, and calcined phosphate at 900°C, as net adsorbents to remove Cu(II). In addition, many researchers have reported that electrocoagulation (EC) is a suitable technology for heavy metal removal.…”

Section: Heavy Metal (Namely Cr and Cu) Removal Techniquesmentioning

confidence: 99%

Pollution of Water Sources from Agricultural and Industrial Effluents: Special Attention to NO₃ˉ, Cr(VI), and Cu(II)

Breida¹,

Younssi²,

Ouammou³

et al. 2020

Water Chemistry

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One of the most important challenges facing humanity today is to conserve and sustain water resources (either surface water or groundwater). This challenge became more pronounced with the increase of urban, agricultural, and industrial activities that discharge a considerable amount of wastewater. Therefore, the preservation of water sources from pollutants is a major concern, shared by all, public, industrial, scientific, researchers, and decision-makers. This chapter analyzes in more detail the pollution and pollutants caused by agricultural and industrial activities. Particular attention is given to pollution via nitrogen and heavy metals (NO 3 − , Cr(VI), and Cu(II)) in either international or national level. The effect of these pollutants on human health and environment, their standards/regulations, and the different current methods used for their detection and treatment are all discussed in the chapter.

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The environmental sustainability of calcined calcium phosphates production from the milling of eggshell wastes and phosphoric acid

Cited by 48 publications

References 26 publications

Statistical optimization and batch studies on adsorption of phosphate using Al-eggshell

Statistical optimization and batch studies on adsorption of phosphate using Al-eggshell

Research on High- and Low-Temperature Characteristics of Bitumen Blended with Waste Eggshell Powder

Pollution of Water Sources from Agricultural and Industrial Effluents: Special Attention to NO₃ˉ, Cr(VI), and Cu(II)

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The environmental sustainability of calcined calcium phosphates production from the milling of eggshell wastes and phosphoric acid

Cited by 48 publications

References 26 publications

Statistical optimization and batch studies on adsorption of phosphate using Al-eggshell

Statistical optimization and batch studies on adsorption of phosphate using Al-eggshell

Research on High- and Low-Temperature Characteristics of Bitumen Blended with Waste Eggshell Powder

Pollution of Water Sources from Agricultural and Industrial Effluents: Special Attention to NO3ˉ, Cr(VI), and Cu(II)

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Product

Resources

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Pollution of Water Sources from Agricultural and Industrial Effluents: Special Attention to NO₃ˉ, Cr(VI), and Cu(II)