Use of mussel shell waste as a sustainable CaO source in ceramic tableware glazes: effects on phase formation and surface properties

IF 2.6 4区材料科学 Q2 MATERIALS SCIENCE, CERAMICS

Journal of the Australian Ceramic Society Pub Date : 2025-12-23 DOI:10.1007/s41779-025-01327-4

Sumeyra Guven-Goren, Fahriye Taskiran, Suleyman Onder Varisli, Bunyamin Ozturk, Selcuk Bulut Yazan

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Abstract

Mussel shells, commonly discarded by restaurants, households, and aquaculture facilities, cause environmental problems due to their slow decomposition and improper disposal, such as dumping into the sea or landfills. As part of sustainability-oriented strategies, reusing such biogenic waste as a raw material offers both ecological and economic benefits. This study investigates the potential of mussel shell powder as a sustainable calcium oxide (CaO) source to replace calcite in opaque, matte, and transparent ceramic tableware glazes X-ray fluorescence (XRF) analysis revealed that, apart from their organic content, the chemical composition of mussel shells is highly similar to that of calcite. While calcite naturally contains the calcite calcium carbonate (CaCO₃) phase, mussel shells are composed of calcium carbonate and its polymorph, aragonite. During firing, the aragonite phase transforms into calcite and subsequently decomposes into CaO. Thermal and phase analyses indicated that the incorporation of mussel shell promotes anorthite formation, resulting in improved microhardness and enhanced thermal stability of the glazes. Additionally, the use of mussel shell did not adversely affect surface gloss or color; all compositions exhibited ∆E values below 1, indicating a negligible color change. Overall, mussel shells can be effectively utilized as an eco-friendly and cost-efficient CaO source in glaze formulations. This approach contributes to waste valorization and supports the development of sustainable ceramic materials.

Graphical Abstract

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在陶瓷餐具釉中使用贻贝废料作为可持续的CaO源：对相形成和表面性能的影响

贻贝通常被餐馆、家庭和水产养殖设施丢弃，由于其分解缓慢和处置不当，如倾倒入海或填埋，造成了环境问题。作为可持续发展战略的一部分，再利用这些生物废物作为原材料具有生态和经济效益。本研究探讨了贻贝粉作为不透明、哑光和透明陶瓷餐具釉中替代方解石的可持续氧化钙（CaO）来源的潜力。x射线荧光（XRF）分析显示，除了有机含量外，贻贝粉的化学成分与方解石非常相似。虽然方解石天然含有方解石碳酸钙（CaCO₃）相，但贻贝壳是由碳酸钙及其多晶型文石组成的。在烧制过程中，文石相转变为方解石，随后分解为CaO。热分析和物相分析表明，贝壳的加入促进了钙长石的形成，从而提高了釉料的显微硬度和热稳定性。此外，使用贻贝壳不会对表面光泽或颜色产生不利影响；所有成分的∆E值都低于1，表明颜色变化可以忽略不计。总的来说，贻贝壳可以有效地用作釉料配方中环保且经济高效的CaO来源。这种方法有助于废物增值，并支持可持续陶瓷材料的发展。图形抽象

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来源期刊

Journal of the Australian Ceramic Society Materials Science-Materials Chemistry

CiteScore

3.70

自引率

5.30%

发文量

123

期刊介绍： Publishes high quality research and technical papers in all areas of ceramic and related materials Spans the broad and growing fields of ceramic technology, material science and bioceramics Chronicles new advances in ceramic materials, manufacturing processes and applications Journal of the Australian Ceramic Society since 1965 Professional language editing service is available through our affiliates Nature Research Editing Service and American Journal Experts at the author''s cost and does not guarantee that the manuscript will be reviewed or accepted