For decades, distiller waste and CO₂ were not the first choice for production of high valued products. Here, CaCO₃ hollow microspheres, a high-value product was synthesized from such a reaction system. The synthetic methods, the formation mechanism and operational cost were discussed. When 2.5 L·min⁻¹·L⁻¹ CO₂ was flowed into distiller waste (pH = 11.4), spheres with 4–13 diameters and about 2 shell thickness were obtained. It is found that there is a transformation of CaCO₃ particles from solid-cubic nuclei to hollow spheres. Firstly, the Ca(OH)₂ in the distiller waste stimulated the nucleation of calcite with a non-template effect and further maintained the calcite form and prevented the formation of vaterite. Therefore, in absence of auxiliaries, the formation of hollow structures mainly depended on the growth and aging of CaCO₃. Studies on the crystal morphology and its changes during the growth process point to the inside-out Ostwald effect in the formation of hollow spheres. Change in chemical properties of the bulk solution caused changes in interfacial tension and interfacial energy, which promoted the morphological transformation of CaCO₃ particles from cubic calcite to spherical clusters. Finally, the flow process for absorption of CO₂ by distiller waste was designed and found profitable.

几十年来，蒸馏器废物和 CO ₂并不是生产高价值产品的首选。在此，由这样的反应体系合成了高价值产品CaCO _{3中空微球。}讨论了合成方法、形成机理和运行成本。当2.5 L·min ^-1 ·L ^-1 CO ₂流入蒸馏器废物（pH = 11.4）时，得到直径为4-13、壳厚约为2的球体。发现CaCO ₃颗粒从实心立方核转变为空心球体。首先，Ca(OH) ₂酒糟中的非模板效应刺激了方解石的形核，并进一步保持了方解石的形态并阻止了球霰石的形成。因此，在没有助剂的情况下，中空结构的形成主要依赖于CaCO ₃的生长和老化。对晶体形态及其在生长过程中的变化的研究表明，空心球形成过程中存在由内而外的奥斯特瓦尔德效应。本体溶液化学性质的变化引起界面张力和界面能的变化，促进了CaCO ₃颗粒从立方方解石向球形团簇的形态转变。最后，通过蒸馏器废物 吸收CO ₂的流程被设计并发现是有利可图的。