Key Laboratory of Coal Mine Disaster Dynamics and Control, Chongqing University, Chongqing 400044, PR China; College of Resource and Environmental Science, Chongqing University, Chongqing 40044, PR China.
Key Laboratory of Coal Mine Disaster Dynamics and Control, Chongqing University, Chongqing 400044, PR China; College of Resource and Environmental Science, Chongqing University, Chongqing 40044, PR China.
Waste Manag. 2018 Dec;82:62-70. doi: 10.1016/j.wasman.2018.10.014. Epub 2018 Oct 16.
MSWI fly ash (MSWI FA) and electrolytic manganese residue (EMR) were successfully co-disposed by use of a geopolymeric system. Alkaline products of MSWI FA and NaOH were used to elicit chemical reactions to promote solidification. The best performing formulation of EMR-based geopolymer for immobilization of heavy metals was composed of 75 wt% MSWI FA and 25 wt% EMR with NaOH solution (7.5 M)/solid of 0.5. Solidification was most effective for the heavy metals: Pb > Cu > Cr > Zn > Mn, respectively. The EMR-based geopolymer had high structural stability likely due to the high ratio of SiO/AlO. The Solidification/Stabilization (S/S) mechanism for heavy metals of geopolymers is likely due to alkaline conditions and geopolymeric encapsulation, highlighting the utility and feasibility of this approach.
城市生活垃圾焚烧飞灰（MSWI FA）和电解锰渣（EMR）成功地通过地质聚合物系统共处置。MSWI FA 的碱性产物和 NaOH 被用来引发化学反应以促进固化。基于 EMR 的地质聚合物中重金属固定效果最好的配方由 75wt% MSWI FA 和 25wt% EMR 组成，NaOH 溶液（7.5M）/固体比为 0.5。重金属的固化效果依次为：Pb>Cu>Cr>Zn>Mn。基于 EMR 的地质聚合物具有高的结构稳定性，这可能是由于 SiO/AlO 的高比例。地质聚合物中重金属的固化/稳定化（S/S）机制可能是由于碱性条件和地质聚合物的封装，突出了这种方法的实用性和可行性。
