Effects of monosaccharides and protein in extracellular polymeric substances of Klebsiella aerogenes on crystalline forms of CaCO3 crystals

IF 4.7 1区材料科学 Q1 METALLURGY & METALLURGICAL ENGINEERING Transactions of Nonferrous Metals Society of China Pub Date : 2024-12-01 DOI:10.1016/S1003-6326(24)66660-4

Nan HU , Ai-shu LI , Huang YU , Yu-long LIU , Hui ZHANG , Zhi-hui YANG , Guang-yue LI , De-xin DING

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Abstract

A strain of Klebsiella aerogenes (K. aerogenes) capable of decomposing calcium acetate for CaCO₃ biomineralization was screened, and the optimum conditions for producing the maximum mass of CaCO₃ crystals induced by Klebsiella aerogenes were found to be 0.25 mol/L calcium acetate, 4% inoculum level, and pH 7. Following that, the monosaccharides and proteins contained in the extracellular polymeric substances (EPS) of Klebsiella aerogenes were identified. The effects of additional identified monosaccharide and proteins on the crystalline form conversion of CaCO₃ crystals were investigated, and the additional monosaccharides were found to promote the crystalline form conversion of CaCO₃ crystals from vaterite to calcite. Specifically, adding 1.00 g/L glucuronic acid was observed to enhance the conversion of crystalline phases of CaCO₃ crystals to calcite completely after 5 d. Meanwhile, additional catalase was observed to contribute to the regular morphology of CaCO₃ crystals without affecting their crystalline phases. The results indicate that the additional glucuronic acid influences the crystalline forms of CaCO₃ crystals significantly.

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来源期刊

Transactions of Nonferrous Metals Society of China 工程技术-冶金工程

CiteScore

7.40

自引率

17.80%

发文量

8456

审稿时长

3.6 months

期刊介绍： The Transactions of Nonferrous Metals Society of China (Trans. Nonferrous Met. Soc. China), founded in 1991 and sponsored by The Nonferrous Metals Society of China, is published monthly now and mainly contains reports of original research which reflect the new progresses in the field of nonferrous metals science and technology, including mineral processing, extraction metallurgy, metallic materials and heat treatments, metal working, physical metallurgy, powder metallurgy, with the emphasis on fundamental science. It is the unique preeminent publication in English for scientists, engineers, under/post-graduates on the field of nonferrous metals industry. This journal is covered by many famous abstract/index systems and databases such as SCI Expanded, Ei Compendex Plus, INSPEC, CA, METADEX, AJ and JICST.