Department of Applied Chemistry, School of Science and Technology, Meiji University, 1-1-1 Higashimita, Tama-ku, Kawasaki, Kanagawa 214-8571, Japan.
Applied Chemistry Course, Graduate School of Science and Technology, Meiji University, 1-1-1 Higashimita, Tama-ku, Kawasaki, Kanagawa 214-8571, Japan.
Waste Manag. 2021 Apr 1;124:154-159. doi: 10.1016/j.wasman.2021.02.016. Epub 2021 Feb 21.
Suppression of heavy metal elution from municipal solid waste incineration (MSWI) fly ash by cement or geopolymer solidification was studied. When these approaches are implemented, however, the volume of the solidified body increases as a consequence of the solidifying agent addition. Considering that residual landfill disposal capacity is decreasing in the long term, a novel method to suppress the elution of heavy metals from MSWI fly ash without decreasing the disposal capacity is needed. We studied four different water repellents and the results indicated that heavy metal elution can easily be suppressed by impregnating the incineration fly ash with commercially available silane oligomers, alkyl alkoxysilane compounds, and water repellents like fatty acids.
研究了通过水泥或地质聚合物固化来抑制城市固体废物焚烧（MSWI）飞灰中重金属的浸出。然而，当采用这些方法时，由于固化剂的添加，固化体的体积会增加。考虑到长期来看，剩余的垃圾填埋处置能力正在减少，因此需要一种新的方法来抑制 MSWI 飞灰中重金属的浸出，而不会降低处置能力。我们研究了四种不同的疏水剂，结果表明，通过用市售的硅烷低聚物、烷氧基硅烷化合物和脂肪酸等疏水剂浸渍焚烧飞灰，很容易抑制重金属的浸出。
