Amylopectin Regulated Mineralization of Calcium Carbonate and Its Application in Removing of Pb(II)

IF 1.5 4区 材料科学 Q3 CRYSTALLOGRAPHY Crystal Research and Technology Pub Date : 2021-06-15 DOI:10.1002/crat.202100012
Qinjiang Zhao, Lihong Zhou, Jie Du, Guanghui Wang, X. Pei
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引用次数: 6

Abstract

As an ecological and environment‐friendly building material, sticky rice mortar has attracted the attention of many researchers. Amylopectin is the most important organic matter of it, which can improve the mechanical properties and durability of sticky rice mortar by inducing mineralization of calcium carbonate (CaCO3). However, amylopectin induced formation of CaCO3 has not been reported. In this paper, mineralization of CaCO3 induced by gelatinized amylopectin is investigated. For comparison, the different morphologies of CaCO3 are studied in the presence of Mg2+, Fe3+. Moreover, these CaCO3 products with different morphologies are used to clean the waste water. The results indicate that gelatinized amylopectin is conducive to formation of pumpkin‐like vaterite. It forms uniform rod and dumbbell‐shaped calcite in the presence of Mg2+, form calcite with stepped depressions in the presence of Fe3+. The adsorption of Pb(II) can reach extremely high level (1445.86 mg g−1) with the rod‐like calcite.
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支链淀粉调控碳酸钙矿化及其在Pb(II)脱除中的应用
糯米砂浆作为一种生态环保的建筑材料,受到了众多研究者的关注。支链淀粉是糯米砂浆中最重要的有机物,支链淀粉通过诱导碳酸钙矿化来改善糯米砂浆的力学性能和耐久性。然而,支链淀粉诱导CaCO3的形成尚未见报道。本文研究了糊化支链淀粉对CaCO3矿化的影响。为了比较,研究了Mg2+、Fe3+存在下CaCO3的不同形貌。此外,这些不同形态的碳酸钙产品被用来净化废水。结果表明,糊化支链淀粉有利于南瓜样淀粉体的形成。在Mg2+存在下形成均匀的棒状和哑铃状方解石,在Fe3+存在下形成阶梯式凹陷方解石。棒状方解石对Pb(II)的吸附达到极高水平(1445.86 mg g−1)。
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来源期刊
自引率
6.70%
发文量
121
审稿时长
1.9 months
期刊介绍: The journal Crystal Research and Technology is a pure online Journal (since 2012). Crystal Research and Technology is an international journal examining all aspects of research within experimental, industrial, and theoretical crystallography. The journal covers the relevant aspects of -crystal growth techniques and phenomena (including bulk growth, thin films) -modern crystalline materials (e.g. smart materials, nanocrystals, quasicrystals, liquid crystals) -industrial crystallisation -application of crystals in materials science, electronics, data storage, and optics -experimental, simulation and theoretical studies of the structural properties of crystals -crystallographic computing
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