Synthesis of aragonite-precipitated calcium carbonate from oyster shell waste via a carbonation process and its applications

Ramakrishna, Chilakala; Thriveni, Thenepalli; Han, Choon; Ahn, Ji-Whan

doi:10.1007/s11814-016-0264-6

Cited by 45 publications

(54 citation statements)

References 28 publications

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“…The dried calcium (Ca 2+ )-rich powders of limestone and mollusk shells were used for the synthesis of aragonite needles by the carbonation process. In this process, we used 26 g of each mollusks shell and limestone calcium-rich dried samples were added individually to 0.6 M of MgCl2 solution, and CO2 gas was injected (50 mL/min flow rate) into the MgCl2-Ca 2+ -rich mollusk shell powder suspension at pH 11 for aragonite form of needle synthesis by carbonation reaction at 80 °C for 3 h duration time, as described in Figure 4 [17]. In the agaronite form of CaCO3 synthesis process, the Ca 2+ ions from mollusk shells reacted with hydrated carbon dioxide (CO3 − ) at 80 °C for 3 h reaction time.…”

Section: Aragonite Synthesis From Limestone and Different Mollusks Shmentioning

confidence: 99%

Sustainable Solutions for Oyster Shell Waste Recycling in Thailand and the Philippines

et al. 2019

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This paper studies the utilization and management of the waste mollusk shell. The two major export countries of mollusk shell are the Southeast Asia’s Thailand and the Philippines. First, the aquaculture of oysters and bivalve shells has been studied as background understanding. The effect of the global climate change on farming and the consequences of farming on the nearby environment and neighborhoods have also been discussed. The utilization technologies on the waste shell are available on a small scale and not industrialized. This study offers an enabling context under which a suitable method can take action to solve the overflow waste shell problem, and at the same time, provide sustainable management.

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Section: Aragonite Synthesis From Limestone and Different Mollusks Shmentioning

confidence: 99%

Sustainable Solutions for Oyster Shell Waste Recycling in Thailand and the Philippines

et al. 2019

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“…The different report stated by Song et al, (2020) that the vaterite phase changes to calcite with an increase in temperature from 20 to 80 ° C. The vaterite formation observed at 60 ℃ (Konopacka-Łyskawa et al, 2020). Polymorph aragonite is the dominant species at high temperatures (Ramakrishna et al, 2017) due to higher growth rates of aragonite as compared to the other polymorphs (Chong et al, 2014). Even though the calcium source was the same and also used the carbonation method, the product of polymorph was different.…”

Section: Introductionmentioning

confidence: 98%

“…Calcite is almost formed in every synthesis treatment while vaterite and aragonite require certain treatments (Onimisi et al, 2016). Calcite is a good and more suitable functional mineral filler for plastics and papers (Ramakrishna et al, 2017). The synthesis of vaterite has been used as a carrier of active compounds for medical treatment purposes, biodegradable polymer capsules (Choukrani et al, 2020), and supported the field of microrheology and microfluidics (Han et al, 2006).…”

Section: Introductionmentioning

confidence: 99%

“…Research on CaCO3 has been widely reported to produced calcite (Ding et al, 2018), aragonite (Ramakrishna et al, 2017), vaterite (Konopacka-Łyskawa et al, 2020, and amorphous precipitated calcium carbonate (Dominique et al, 2016) using various methods. Precipitated calcium carbonate usually produced through several processes such as calcium chloride, lime-soda, and carbonation process (Chang et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

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Transformation of Calcium Carbonate Polymorph From Various Type of Shells by Carbonation Methods

Muljani

Saputra

Sumada

2021

Reaktor

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The utilization of shells can reduce the accumulation of shell wastes and increase the value of shells to achieve ecological and economic incentives. This study examines the transformation of calcium carbonate polymorph from several types of shells to understand the causes of their characteristics in order to suitable for their use. The types of shells used in this experiment are selected based on consumable and their habitats such as snail shells, crab shells, eggshells, batik mussels shells, and golden conch shells. The prepared shells calcinate at 900 °C, the reaction with hydrochloric acid, and carbonation by flowing CO2 into a stirred reactor to produce precipitated CaCO3. The characteristics of polymorph CaCO3 in the sintering temperature of 30, 50, and 70 ℃ were identified by XRD, FTIR, and SEM morphological. The result is that the polymorphs formed from each shell are different in shape, size, and crystallinity. At the temperature of 70 ℃, the rhombohedral calcite was obtained from snail shells, the cubic calcite was obtained from batik mussel shell, while rhombohedral calcite multilayers obtained (100%) from golden conch shells. The aragonite was obtained from batik mussel shells at 30 and 70 ℃. The pure vaterite (100%) was obtained from snail shells and crab shells at 50 ℃. The characteristic of polymorph formed might be useful as information for more suitable applications, especially as nano-bio materials, optical, or filler

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“…Furthermore, Ferhat et al proved that heavy metals such as copper and zinc were effectively adsorbed by using a modified clay and chitosan [28]. During our previous research for synthesis of precipitated calcium carbonate (PCC) using the oyster shell [29], our group has considered that waste oyster shell can be an environmentally friendly reagent for removing algae or eutrophic substances. It has been reported that hundreds of tons of waste oyster shells are thrown away to temporary storage every year in a few of countries including South Korea and China, which has led to social and environmental issues [30][31][32].…”

Section: Introductionmentioning

confidence: 99%

Effect by Alkaline Flocculation of Algae and Phosphorous from Water Using a Calcined Waste Oyster Shell

Nam

Choi²,

Lee

et al. 2017

Water

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Alkaline flocculation has been considered as a potential candidate to remove algae and eutrophic substances from water. A number of researches using low-cost and environmentally friendly methods have been suggested to optimize removal efficiency. In this study, a calcium-containing waste oyster shell, as an environmentally friendly substance, has been used to treat phosphorous, a eutrophic substance, and to remove algae from the fresh water simultaneously. The X-ray Fluorescence (XRF) analysis showed that CaO was a major phase in a raw oyster shell, which played an important role for flocculation of phosphorous as well as algae. In order to eliminate the algae or phosphorous effectively, oyster shell was calcined at 1000 • C and hydrated in water. The slurry of hydrated calcined oyster shell, from 5 g/L to 12.5 g/L, was utilized in this experiment, where the experimental results were compared with that of dolomite. A series of experimental investigations, such as pH and turbidity changes using the water quality analyzer and UV-Visible spectroscopy (UV-Vis), demonstrated that the algae were efficiently removed. In addition, total phosphorous (TP) and total nitrogen (TN) analyses at different amounts of slurries of the hydrated calcined oyster shell showed that almost all the phosphorous was removed at 7.5 g/L of hydrated oyster shell, but due to the high solubility of nitrogen compounds, no obvious effect for the removal of nitrogen was observed. Furthermore, powder X-ray diffractions (PXRD) showed that Ca(OH) 2 compounds were transformed to the phosphate compound, suggesting that the oyster shell caused flocculation by chemically forming with phosphorous ions.

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Synthesis of aragonite-precipitated calcium carbonate from oyster shell waste via a carbonation process and its applications

Cited by 45 publications

References 28 publications

Sustainable Solutions for Oyster Shell Waste Recycling in Thailand and the Philippines

Sustainable Solutions for Oyster Shell Waste Recycling in Thailand and the Philippines

Transformation of Calcium Carbonate Polymorph From Various Type of Shells by Carbonation Methods

Effect by Alkaline Flocculation of Algae and Phosphorous from Water Using a Calcined Waste Oyster Shell

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