A Study on physicochemical and calcination processed characteristic of oyster shell

Lee, Hak-Soo; Park, Deok-Won; Woo, Dal-Sik

doi:10.5762/kais.2009.10.12.3971

Cited by 7 publications

(2 citation statements)

References 3 publications

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“…Then, it is further calcined at 800°C, 900°C, and 1000°C for 1, 2, and 4 hours in a furnace. When the calcination temperature reached 900°C, the calcium carbonate present in the oyster shells was completely converted into calcium oxide as 15 :…”

Section: Methodsmentioning

confidence: 99%

Study of Algal Organic Matter Removal Efficiency Using a Newly Developed Removal System

Kim

Yeo

Park

2020

Air, Soil and Water Research

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Water sources are currently facing great challenges from rapid population growth and industrial developments. Investigations into how to remove algal organic matter (AOM) are thus of great importance from an environmental point of view because most lakes and reservoirs in South Korea suffer from algae problems, especially in the summer. Many efforts have been made to remove AOM from the aquatic environment in South Korea. In this study, we focus on development of a new AOM removal system, utilizing waste oyster shells and ferrihydrite as the media of the filtration system. Using this system, the removal rate of AOM was investigated regarding the concentrations of chlorophyll a, total phosphorus, and alginate. It was found that about 92% of the total phosphorus was removed through this system when raw oyster shell powders were heated at 900°C to convert them into calcium oxide powders. The use of a continuous system also led to a reduction of 94.2% in total phosphorus, 78.8% in chlorophyll a, and 43.6% in alginate.

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Section: Methodsmentioning

confidence: 99%

Study of Algal Organic Matter Removal Efficiency Using a Newly Developed Removal System

Kim

Yeo

Park

2020

Air, Soil and Water Research

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“…The main chemical composition of ROSP is 92.08% of calcium carbonate (CaCO 3 ) [17]. ROSP was calcined at ambient air condition inside an electric furnace at a constant temperature of 900°C for 1 h. After that heat treatment, it is mixed with some calcium carbonate containing CO 2 portion and most of crystalline CaO [18].…”

Section: Preparation Of Tospmentioning

confidence: 99%

Effect of oyster shell powder on nitrogen releases from contaminated marine sediment

Khirul

Kim

Cho

et al. 2019

Environmental Engineering Research

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Nitrogen flux release from organically enriched sediments into overlying water, which may have significantly influence on water quality and increasing continuous eutrophication. The purpose of this study is to evaluate the remediation efficiency of oyster shell powder and its treated product into organically enriched sediment in terms of nitrogen flux, organic matter, chlorophyll-a, pH and dissolved oxygen (DO). The TOSP was mainly composed of CaO2. The application of TOSP into the sediment has increased the pH, DO and significantly decreased the concentrations of NH4 +-N and T-N compared to other basins. On the other hand, nitrate was enriched with the addition of treated oyster powder, an oxygen releasing compound on both phases. Furthermore, chlorophyll-a was found to be increasing with time in the control basin meanwhile it dropped drastically with the addition of TOSP, which implied on the repression of algal growth owing to blockage of nitrogen source migrating from the sediment. This study has shown that the TOSP was effective to improve sediment-water quality, diminish eutrophication and control harmful algae blooms in a marine environment. Therefore, it is a good reference as an effective environmental remediation agent.

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The effect of calcium peroxide originating from oyster shell powder on control of phosphorus compounds in oceanic sediment

Kim

Khirul

Cho

et al. 2020

Korean J. Chem. Eng.

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A Study on physicochemical and calcination processed characteristic of oyster shell

Cited by 7 publications

References 3 publications

Study of Algal Organic Matter Removal Efficiency Using a Newly Developed Removal System

Study of Algal Organic Matter Removal Efficiency Using a Newly Developed Removal System

Effect of oyster shell powder on nitrogen releases from contaminated marine sediment

The effect of calcium peroxide originating from oyster shell powder on control of phosphorus compounds in oceanic sediment

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