BULLETIN OF THE CHINESE CERAMIC SOCIETY ›› 2026, Vol. 45 ›› Issue (8): 2737-2748.DOI: 10.16552/j.cnki.issn1001-1625.2026.0091
• Solid Waste and Eco-Materials • Previous Articles Next Articles
QIN Yongbo1,2,3,4, ZHANG Li1,2,3,4, GUO Xiliang1,2,3,4, WANG Ji1,2,3,4, REN Yafeng1,2,3,4, HAN Xu1,2,3,4, YANG Zijie1,2,3,4, YAN Xiaojun1,2,3,4, GAO Chao1,2,3,4(
)
Received:2026-01-23
Revised:2026-03-23
Online:2026-08-15
Published:2026-09-01
Contact:
GAO Chao
CLC Number:
QIN Yongbo, ZHANG Li, GUO Xiliang, WANG Ji, REN Yafeng, HAN Xu, YANG Zijie, YAN Xiaojun, GAO Chao. Research Progress on Solidification of Radioactive Waste by Phosphoric Acid-Based Geopolymers[J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2026, 45(8): 2737-2748.
| 离子类型 | 原材料 | PGP特性 | 固化机理分析 | 参考文献 |
|---|---|---|---|---|
| Cs+ | 偏高岭土+磷酸+CsNO3 | 结构致密,孔隙率低 | 致密性:机械固封 负电基团:静电作用 | [ |
| 偏高岭土+磷酸+CsNO3 | Cs浸出率高,抗压强度高 | Cs电量低,静电作用弱 Cs均匀分布在凝胶表面 | [ | |
| Sr2+ | 偏高岭土+磷酸+Sr(NO3)2 | Sr浸出率低,抗压强度低 | Sr电量高,静电作用强, 嵌入固化体结构 | [ |
| 偏高岭土+磷酸+磷酸三钠+SrCl2·6H2O | 协同激发使抗压强度和 Sr固化能力提升 | 形成稳定Sr-O-P结构 主要以内层络合固化 | [ | |
| I-、 | 偏高岭土+磷酸+KI/KIO3/K2Se2O3/K2Se2O4 | 随磷酸浓度升高表面正 电荷量增加 | Al溶出形成AlVI-O AlVI-O正电荷吸附 | [ |
| Pb2+ | 粉煤灰+磷酸二氢铝+Pb2+污染酸性土壤 | PbHPO4、Pb3(PO4)2沉淀, AlPO4凝胶 | 形成磷酸盐化学沉淀 AlPO4凝胶吸附作用 | [ |
粉煤灰+偏高岭土+磷酸二氢铝+ Pb2+污染酸性土壤 | 偏高岭土3%最佳 形成钾长石等晶体 | 形成磷酸盐化学沉淀 钾长石等晶体吸附 | [ | |
| Pb2+、Ni2+、Cd2+ | 偏高岭土+磷酸+过氧化氢+ 辛基酚聚氧乙烯醇 | 高孔隙率泡沫结构 毫米级孔径与微裂纹 | H+与重金属离子交换 —OH表面络合作用 | [ |
Table 1 Immobilization mechanisms of PGP for different types of ions
| 离子类型 | 原材料 | PGP特性 | 固化机理分析 | 参考文献 |
|---|---|---|---|---|
| Cs+ | 偏高岭土+磷酸+CsNO3 | 结构致密,孔隙率低 | 致密性:机械固封 负电基团:静电作用 | [ |
| 偏高岭土+磷酸+CsNO3 | Cs浸出率高,抗压强度高 | Cs电量低,静电作用弱 Cs均匀分布在凝胶表面 | [ | |
| Sr2+ | 偏高岭土+磷酸+Sr(NO3)2 | Sr浸出率低,抗压强度低 | Sr电量高,静电作用强, 嵌入固化体结构 | [ |
| 偏高岭土+磷酸+磷酸三钠+SrCl2·6H2O | 协同激发使抗压强度和 Sr固化能力提升 | 形成稳定Sr-O-P结构 主要以内层络合固化 | [ | |
| I-、 | 偏高岭土+磷酸+KI/KIO3/K2Se2O3/K2Se2O4 | 随磷酸浓度升高表面正 电荷量增加 | Al溶出形成AlVI-O AlVI-O正电荷吸附 | [ |
| Pb2+ | 粉煤灰+磷酸二氢铝+Pb2+污染酸性土壤 | PbHPO4、Pb3(PO4)2沉淀, AlPO4凝胶 | 形成磷酸盐化学沉淀 AlPO4凝胶吸附作用 | [ |
粉煤灰+偏高岭土+磷酸二氢铝+ Pb2+污染酸性土壤 | 偏高岭土3%最佳 形成钾长石等晶体 | 形成磷酸盐化学沉淀 钾长石等晶体吸附 | [ | |
| Pb2+、Ni2+、Cd2+ | 偏高岭土+磷酸+过氧化氢+ 辛基酚聚氧乙烯醇 | 高孔隙率泡沫结构 毫米级孔径与微裂纹 | H+与重金属离子交换 —OH表面络合作用 | [ |
| 性能 | OPC | AAG | PGP | |
|---|---|---|---|---|
| 抗压强度 | 大于42 MPa(强度等级42.5水泥应用最广泛) | 最高可达117 MPa[ | 最高在146~166 MPa 相同液固比、养护温度下抗压强度比AAG高30 MPa | |
| 耐腐蚀性能 | 耐酸 | 水化产物易溶解于酸,导致结构疏松、强度大幅下降 | 渗透性低,阻止酸性介质渗透;粉煤灰、矿渣体系钙可能形成溶解性钙盐[ | 致密网络结构阻滞渗透,无易溶钙盐生成,耐酸性最强 |
| 耐硫酸盐侵蚀 | 硫酸盐与水化产物反应生成钙矾石和石膏,体积膨胀导致开裂、强度下降 | 原材料含钙,导致一定程度膨胀性产物生成 | 耐硫酸盐侵蚀性优异,优于OPC和PGP[ | |
| 耐氯离子渗透 | 毛细孔连通性强,氯离子易通过扩散渗透 | 通过物理吸附+C-A-S-H凝胶结合氯离子[ | 以物理吸附为主 | |
| 耐高温性能 | 耐高温性较差,低温区间相对稳定,高温快速劣化 | 耐高温性优良,中高温(≤800 ℃)稳定性突出;矿渣基体系热稳定性略低 | 耐高温性最佳,高温(≤1 050 ℃)强度最稳定[ | |
| 核素浸出性 | Cs | 高碱环境下迁移性强,难以有效固化,需额外添加材料 | 通过离子交换,电荷平衡和机械固封有效固化Cs | 凝胶负电基团静电吸附,低孔隙率机械固封效果显著 |
| Sr | 通过化学沉淀和机械固封固化Sr | 通过离子交换、电荷平衡和机械固封固化Sr,高Sr含量下长时间浸出结构受损 | 通过化学络合、电荷平衡和机械固封固化Sr,结构稳定不易破坏 | |
| 阴离子核素 | 仅通过机械固封,阴离子核素迁移快,需添加吸附剂辅助固化 | 结构整体带负电,形成排斥作用,仅通过机械固封和少量表面正电位点结合 | 结构呈电中性,正电基团静电吸附阴离子核素;机械固封效果优异 | |
| 废物包容能力 | 含硼废物 | 硼强烈抑制水泥水化反应,导致缓凝,强度降低,发展慢 | 硼酸盐部分参与反应;阻碍缩聚过程,导致缓凝 | 硼酸盐部分参与反应,生成非晶态磷酸硼,废物包容率比AAG提升约3倍 |
| 废树脂 | 质量包容率为15%~20% | 质量包容率为25%~35% | 质量包容率最高达到40% | |
| 有机废液 | 有机组分强烈抑制水泥水化反应;对TBP/OK质量包容率15%左右,强度仅为11.4 MPa | 部分极性有机液体难以固化,易导致抗压强度显著下降[ | 与有机相相容性好,无明显聚合抑制效应;质量包容率18%时抗压强度达59.19 MPa | |
Table 2 Comprehensive comparison of performance of OPC, AAG, and PGP in solidifying radioactive waste
| 性能 | OPC | AAG | PGP | |
|---|---|---|---|---|
| 抗压强度 | 大于42 MPa(强度等级42.5水泥应用最广泛) | 最高可达117 MPa[ | 最高在146~166 MPa 相同液固比、养护温度下抗压强度比AAG高30 MPa | |
| 耐腐蚀性能 | 耐酸 | 水化产物易溶解于酸,导致结构疏松、强度大幅下降 | 渗透性低,阻止酸性介质渗透;粉煤灰、矿渣体系钙可能形成溶解性钙盐[ | 致密网络结构阻滞渗透,无易溶钙盐生成,耐酸性最强 |
| 耐硫酸盐侵蚀 | 硫酸盐与水化产物反应生成钙矾石和石膏,体积膨胀导致开裂、强度下降 | 原材料含钙,导致一定程度膨胀性产物生成 | 耐硫酸盐侵蚀性优异,优于OPC和PGP[ | |
| 耐氯离子渗透 | 毛细孔连通性强,氯离子易通过扩散渗透 | 通过物理吸附+C-A-S-H凝胶结合氯离子[ | 以物理吸附为主 | |
| 耐高温性能 | 耐高温性较差,低温区间相对稳定,高温快速劣化 | 耐高温性优良,中高温(≤800 ℃)稳定性突出;矿渣基体系热稳定性略低 | 耐高温性最佳,高温(≤1 050 ℃)强度最稳定[ | |
| 核素浸出性 | Cs | 高碱环境下迁移性强,难以有效固化,需额外添加材料 | 通过离子交换,电荷平衡和机械固封有效固化Cs | 凝胶负电基团静电吸附,低孔隙率机械固封效果显著 |
| Sr | 通过化学沉淀和机械固封固化Sr | 通过离子交换、电荷平衡和机械固封固化Sr,高Sr含量下长时间浸出结构受损 | 通过化学络合、电荷平衡和机械固封固化Sr,结构稳定不易破坏 | |
| 阴离子核素 | 仅通过机械固封,阴离子核素迁移快,需添加吸附剂辅助固化 | 结构整体带负电,形成排斥作用,仅通过机械固封和少量表面正电位点结合 | 结构呈电中性,正电基团静电吸附阴离子核素;机械固封效果优异 | |
| 废物包容能力 | 含硼废物 | 硼强烈抑制水泥水化反应,导致缓凝,强度降低,发展慢 | 硼酸盐部分参与反应;阻碍缩聚过程,导致缓凝 | 硼酸盐部分参与反应,生成非晶态磷酸硼,废物包容率比AAG提升约3倍 |
| 废树脂 | 质量包容率为15%~20% | 质量包容率为25%~35% | 质量包容率最高达到40% | |
| 有机废液 | 有机组分强烈抑制水泥水化反应;对TBP/OK质量包容率15%左右,强度仅为11.4 MPa | 部分极性有机液体难以固化,易导致抗压强度显著下降[ | 与有机相相容性好,无明显聚合抑制效应;质量包容率18%时抗压强度达59.19 MPa | |
| 序号 | 原材料体系 | 养护条件 | 抗压强度/MPa | 参考文献 |
|---|---|---|---|---|
| 1 | 偏高岭土+H3PO4 | 50 ℃ 1 d+室温27 d | 98.8 | [ |
| 2 | 偏高岭土+H3PO4 | 室温 28 d | 93.8 | [ |
| 3 | 偏高岭土+ H3PO4 | 50 ℃ 28 d | 78.1 | [ |
| 4 | 偏高岭土+H3PO4 | 室温7 d | 29.0 | [ |
| 5 | 偏高岭土+H3PO4 | 室温2 h+60 ℃ 1 d+室温14 d | 146.0 | [ |
| 6 | 偏高岭土+H3PO4 | 50 ℃ 水浴加热28 d | 166.7 | [ |
| 7 | 偏高岭土+H3PO4 | 40 ℃ 6 d+80 ℃ 2 h+室温 | 115.0 | [ |
| 8 | SiO2·Al2O3+H3PO4 | 60 ℃密封3 d+放置3 d | 145.3 | [ |
| 9 | 偏高岭土+Na3PO4·12H2O/H3PO4 +Sr | 60 ℃ 3 d+室温25 d | 35.2 | [ |
| 10 | 偏高岭土+H3PO4+40%(质量分数)含硼废物 | 60 ℃ 4 d+90 ℃ 1 d | 26.0 | [ |
| 11 | 偏高岭土+ H3PO4+40%(质量分数)废树脂 | 60 ℃ 1 d+室温 5 d | 7.0 | [ |
| 12 | 高岭土+铀尾矿+H3PO4 | 800 ℃ 煅烧30 min | 22.4 | [ |
| 13 | 粉煤灰+磷酸二氢铝+Pb污染土壤 | 室温 7 d+60 ℃ 21 d | 18.6 | [ |
Table 3 Analysis of curing condition for PGP preparation
| 序号 | 原材料体系 | 养护条件 | 抗压强度/MPa | 参考文献 |
|---|---|---|---|---|
| 1 | 偏高岭土+H3PO4 | 50 ℃ 1 d+室温27 d | 98.8 | [ |
| 2 | 偏高岭土+H3PO4 | 室温 28 d | 93.8 | [ |
| 3 | 偏高岭土+ H3PO4 | 50 ℃ 28 d | 78.1 | [ |
| 4 | 偏高岭土+H3PO4 | 室温7 d | 29.0 | [ |
| 5 | 偏高岭土+H3PO4 | 室温2 h+60 ℃ 1 d+室温14 d | 146.0 | [ |
| 6 | 偏高岭土+H3PO4 | 50 ℃ 水浴加热28 d | 166.7 | [ |
| 7 | 偏高岭土+H3PO4 | 40 ℃ 6 d+80 ℃ 2 h+室温 | 115.0 | [ |
| 8 | SiO2·Al2O3+H3PO4 | 60 ℃密封3 d+放置3 d | 145.3 | [ |
| 9 | 偏高岭土+Na3PO4·12H2O/H3PO4 +Sr | 60 ℃ 3 d+室温25 d | 35.2 | [ |
| 10 | 偏高岭土+H3PO4+40%(质量分数)含硼废物 | 60 ℃ 4 d+90 ℃ 1 d | 26.0 | [ |
| 11 | 偏高岭土+ H3PO4+40%(质量分数)废树脂 | 60 ℃ 1 d+室温 5 d | 7.0 | [ |
| 12 | 高岭土+铀尾矿+H3PO4 | 800 ℃ 煅烧30 min | 22.4 | [ |
| 13 | 粉煤灰+磷酸二氢铝+Pb污染土壤 | 室温 7 d+60 ℃ 21 d | 18.6 | [ |
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