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Language: korean

Conflict of Interest: In relation to this article, we declare that there is no conflict of interest.

Publication history: Received August 7, 2020
Accepted September 9, 2020

This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/bync/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

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라이신 첨가에 의한 폐 굴껍질 이용 vaterite형 탄산칼슘 제조

Production of Vaterite Type Calcium Carbonate by using Oyster Shell Waste with Lysine

박영철^†

Young-Cheol Bak^†

경상대학교 화학공학과 공학연구원, 52828 경상남도 진주시 진주대로 501

Engineering Research Institute, Department of Chemical Engineering Gyeongsang National University, 501, Jinju-daero, Jinju-si, Gyeongsangnam-do, 52828, Korea

Korean Chemical Engineering Research, February 2021, 59(1), 118-126(9), 10.9713/kcer.2021.59.1.118 Epub 15 January 2021

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Abstract

폐기물로 대량 발생되는 굴껍질을 활용한 vaterite 형 탄산칼슘 제조 실험을 하였다. 굴껍질을 800 °C 의 온도에서 항량이 되도록 가열하여 산화칼슘이 주성분인 소성 굴껍질을 제조하였다. 이 굴껍질을 질산 용액에 녹여 0.1M 질산칼슘 수용액을 만들고, 0.1 몰 라이신/1 몰 생석회가 첨가된 0.1 M 탄산나트륨 수용액과 20 °C, 600 rpm 교반 조건에서 1시간동안 반응시켜 탄산칼슘을 제조하였다. XRD, SEM, Size 분석을 하고 vaterite 84.5%, calcite 15.5% 함유한 구형 탄산칼슘을 확인하였다. 평균 입경 범위는 6.87 μm 이었고, 아미노산 분석에서 탄산칼슘 내의 라이신 함유량은 0.1%이었다.

The experiments to produce the vaterite type calcium carbonate were conducted for using the waste oyster shell as the recycling resources. Firstly, the oyster shell were calcinated at 800 °Cfor 24 h. Calcinated oyster shell were reacted with the nitric acid solution, and were diluted to 0.1 M Ca(NO3)2 solution. This solution was mixed with 0.1 M Na2CO3 contained 0.1 mol lysine/1 mol CaO at 20 °C and 600 rpm mixing condition for 1 h. The reaction products were identified to vaterite type calcium carbonate (84.5% vaterite, 15.5% calcite) by XRD and SEM analysis. Mean particle diameter was 6.87 μm, and the lysine content in calcium carbonate was analyzed to 0.1%.

Keywords

Oyster shell Lysine Calcium carbonate Vaterite CaCO3

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