Development of new immobilization technique through investigation on the immobilization selectivity between cement related materials and anionic pollutants

通过研究水泥相关材料与阴离子污染物之间的固定选择性，开发新的固定技术

• 批准号: 21K14574
• 负责人: GUO BINGLIN
• 金额: $ 2.83万
• 依托单位: Kyushu University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Early-Career Scientists
• 财政年份: 2021
• 资助国家: 日本
• 起止时间: 2021-04-01 至 2022-03-31
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-21K14574/
• 关键词: selectivity; anions; cement; immobilization; pollutants; anionic pollutants; selevtivity; minerals; DFT calculation

The selectivity of the anions to cementitious materials is initially investigated. The selectivity of various anions to hydrocalumite and ettringite is studied by a combination of experimental results and computational chemistry. The anions immobilized in hydrocalumite are mainly determined by the anionic radius and hydration abilities. However, the selectivity of anions to ettringite is generally controlled by the anions' hydration ability. The performance of anions to these hydroxides are evaluated for understanding the migration behavior and also applied for development of new immobilization materials. Based on these, we have summarized one work on this and will be published in international journals. Considering the Portland cement have some defects (low compatibility, longer setting time, etc.) on the immobilization of pollutants, I have collaborated with some international research institutes on developing novel immobilization materials based on selectivity research. We have applied this material to immobilize some industrial wastes. Based on the experiments, we found this material exhibits outstanding performance on the immobilization of pollutants. This material could be applied for the treatment of various pollutants.

初步研究了阴离子对胶凝材料的选择性。通过实验结果和计算化学的结合，研究了各种阴离子对水铝钙石和钙矾石的选择性。水铝钙石中固定的阴离子主要由阴离子半径和水合能力决定。然而，阴离子对钙矾石的选择性通常由阴离子的​​水合能力控制。评估阴离子对这些氢氧化物的性能，以了解迁移行为，也可用于开发新的固定材料。在此基础上，我们总结了一篇这方面的工作，并将在国际期刊上发表。考虑到波特兰水泥在固定污染物方面存在一些缺陷（相容性低、凝结时间较长等），我与一些国际研究机构合作，基于选择性研究开发新型固定材料。我们已经应用这种材料来固定一些工业废物。通过实验，我们发现该材料在污染物固定化方面表现出优异的性能。该材料可用于多种污染物的处理。

项目成果

Designing Novel Magnesium Oxysulfate Cement for Stabilization/Solidification of Municipal Solid Waste Incineration Fly Ash

设计用于稳定/固化城市固体废物焚烧飞灰的新型硫氧镁水泥

• DOI: 10.1016/j.jhazmat.2021.127025
• 发表时间: 2021
• 期刊: Journal of Hazardous Materials
• 影响因子: 13.6
• 作者: Lei Wang;Yuying Zhang;Liang Chen;Binglin Guo;Yongshan Tan;Keiko Sasaki;Daniel C.W. Tsang
• 通讯作者: Daniel C.W. Tsang