Conversion of biowastes to biomaterial: An innovative waste management approach

Kannan, M. Bobby; Ronan, Karly

doi:10.1016/j.wasman.2017.05.045

Cited by 25 publications

(10 citation statements)

References 22 publications

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“…CaO was extracted from chicken eggshell waste according to the reported procedures in the literature 52 , 53 with some modifications as follows: To eliminate suspended impurities from any organic phases and pathogens, the eggshells were first cleansed with double-distilled water before being seethed at 100 °C for 60 min. The washed eggshells were dehydrated in a hot air oven at 150 °C for 24 h and subsequently were ground manually into a fine powder in a pestle and mortar.…”

Section: Methodsmentioning

confidence: 99%

Synthesis and characterization of calcium and magnesium based oxides and titanates for photocatalytic degradation of rhodamine B: a comparative study

Vijayakumar

Imthiaz

Drweesh

et al. 2023

Sci Rep

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The current investigation deals with the simple and ecological synthesis of CaO, MgO, CaTiO3, and MgTiO3 for the photocatalytic dilapidation of rhodamine B dye. CaO was procured from chicken eggshell waste by calcination process, while MgO was produced by solution combustion method using urea as a fuel source. Furthermore, CaTiO3 and MgTiO3 were synthesized through an easy and simple solid-state method by mixing thoroughly the synthesized CaO or MgO with TiO2 before calcination at 900 °C. XRD and EDX investigations confirmed the phase formation of the materials. Moreover, FTIR spectra revealed the existence of Ca–Ti–O, Mg–Ti–O, and Ti–O which resembles the chemical composition of the proposed materials. SEM micrographs revealed that the surface of CaTiO3 is rougher with relatively dispersed particles compared to MgTiO3, reflecting a higher surface area of CaTiO3. Diffuse reflectance spectroscopy investigations indicated that the synthesized materials can act as photocatalysts under UV illumination. Accordingly, CaO and CaTiO3 effectively degraded rhodamine B dye within 120 min with a photodegradation activity of 63% and 72%, respectively. In contrast, the photocatalytic degradation activity of MgO and MgTiO3 was much lower, since only 21.39 and 29.44% of the dye were degraded, respectively after 120 min of irradiation. Furtheremore, the photocatalytic activity of the mixture from both Ca and Mg titanates was 64.63%. These findings might be valuable for designing potential and affordable photocatalysts for wastewater purification.

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Section: Methodsmentioning

confidence: 99%

Synthesis and characterization of calcium and magnesium based oxides and titanates for photocatalytic degradation of rhodamine B: a comparative study

Vijayakumar

Imthiaz

Drweesh

et al. 2023

Sci Rep

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“…The eggshell has been found to be mainly composed of calcium carbonate. 23,24 These findings suggest that the eggshell could be an attractive biosource of lime and could be used as a source of CO 2 sorbent in the gasification of biomass. Ives et al 25 compared the CO 2 carrying capacities of eggshell, limestone, and mussel shell.…”

Section: Introductionmentioning

confidence: 94%

“…27 With a previous investigation showing that the shell occupies 11 wt % of an egg, 28 one can assume that the global eggshell production in 2017 was almost 8 million tons. Previous studies have also revealed that the eggshell is ∼94 wt % CaCO 3, 24,29 suggesting that more than 7.4 million tons of CaCO 3 could have been generated from eggshells in 2017. For those reasons, the eggshell has been studied as a possible CO 2 sorbent in gasification.…”

Section: Introductionmentioning

confidence: 99%

Hydrogen-Rich Gas Stream from Steam Gasification of Biomass: Eggshell as a CO₂ Sorbent

et al. 2020

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The present study investigates the steam gasification of biomass with an in-process CO2 capture. The work is aimed at achieving hydrogen enrichment while reducing the carbon dioxide (CO2) concentration in the gas stream. A perceived waste resource, eggshell, was utilized as the source of the CO2 sorbent, while sawdust was used as the feedstock. The eggshell was calcined at 900 °C to activate it for the carbonation process. The gasification tests were conducted in a bubbling fluidized bed reactor with the calcined eggshell (CES) as the bed material in addition to being a CO2 sorbent. Thermogravimetric analysis conducted on the eggshell showed that 900 °C is sufficient to fully convert the calcium carbonate (CaCO3) in the eggshell to calcium oxide (CaO). The complete conversion was also evident in X-ray diffraction peaks. The effects of key process parameters, steam to biomass ratio (SBR) and calcined eggshell to biomass ratio (CEBR), were examined. Increasing the CEBR provided more CaO to the process, promoted the CO2 uptake via the carbonation reaction, and accordingly enhanced hydrogen enrichment. An increase in SBR in the CES-based tests improved the hydrogen concentration in the gas stream. A minimum CO2 volumetric concentration of 3.3 ± 0.4% and a maximum hydrogen concentration of 78 ± 3.6% were obtained in this study at a temperature of 650 °C, an SBR of 1.2, and a CEBR of 1.0. Additionally, results of the CES-based experiments showed that the water gas shift reaction is more important for the enhancement of hydrogen production than the other gasification reactions.

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“…Worldwide, livestock production is the largest user of agricultural land and it is leaving a noteworthy imprint on the environment. 4,5 Chicken livestock has become a major hot spot for synthetic chemists since, it is the most common food globally and the egg-shell waste has many catalytic applications. Eggs are part of chicken livestock and according to the Food and Agricultural Organization (FAO) 2019 statistics, China stands on top for its production (∼63 million tons) and India got the 3 rd place with a production of ∼12 million tons of eggs, which led to production of egg shell (ES) as a biowaste.…”

Section: Introductionmentioning

confidence: 99%

Biogenic derived egg shell and its derivatives as solid base heterogeneous catalysts for organic transformations: a comprehensive review

Naik,

Divakar,

M. S.

et al. 2024

RSC Sustain.

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Conversion of biowastes to biomaterial: An innovative waste management approach

Cited by 25 publications

References 22 publications

Synthesis and characterization of calcium and magnesium based oxides and titanates for photocatalytic degradation of rhodamine B: a comparative study

Synthesis and characterization of calcium and magnesium based oxides and titanates for photocatalytic degradation of rhodamine B: a comparative study

Hydrogen-Rich Gas Stream from Steam Gasification of Biomass: Eggshell as a CO₂ Sorbent

Biogenic derived egg shell and its derivatives as solid base heterogeneous catalysts for organic transformations: a comprehensive review

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Conversion of biowastes to biomaterial: An innovative waste management approach

Cited by 25 publications

References 22 publications

Synthesis and characterization of calcium and magnesium based oxides and titanates for photocatalytic degradation of rhodamine B: a comparative study

Synthesis and characterization of calcium and magnesium based oxides and titanates for photocatalytic degradation of rhodamine B: a comparative study

Hydrogen-Rich Gas Stream from Steam Gasification of Biomass: Eggshell as a CO2 Sorbent

Biogenic derived egg shell and its derivatives as solid base heterogeneous catalysts for organic transformations: a comprehensive review

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Hydrogen-Rich Gas Stream from Steam Gasification of Biomass: Eggshell as a CO₂ Sorbent