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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引用次数: 0
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.
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.
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