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A platform for research: civil engineering, architecture and urbanism
Modified biochar, preparation method thereof and carbon sequestration cement material
The invention relates to the technical field of new materials, in particular to modified biochar, a preparation method thereof and a carbon sequestration cement material. The preparation method comprises the following steps: adding a salt solution into solid waste for extraction treatment to obtain an extracting solution; adding soluble sulfide into the extracting solution for precipitation treatment to obtain a heavy metal precipitate and a modified solution; and performing modification treatment on the biochar by using the modified solution to obtain the modified biochar. The modified solution is rich in various active ions which can be combined with or react with functional groups rich in the biochar, so that active sites on the surface of the biochar are enriched, the pore structure is improved, the prepared modified biochar can further improve the performance of capturing and fixing CO2, and meanwhile, the interaction with a cement material is further improved; the compactness, the fracture resistance and the compression resistance are enhanced, the durability is improved, and the service life is prolonged. The preparation method is simple in process, low in cost and not prone to secondary pollution. The cement material and the modified charcoal can also be used for preparing a carbon-sequestration cement material.
本申请涉及新材料技术领域，尤其涉及改性生物炭及其制备方法、固碳水泥材料。制备方法包括如下步骤：向固废中加入盐溶液进行提取处理，得到提取液；向提取液中加入可溶性硫化物进行沉淀处理，得到重金属沉淀物和改性溶液；将改性溶液对生物炭进行改性处理，得到改性生物炭。改性溶液中富含多种活性离子，会与生物炭中富含的官能团结合或反应，丰富了生物炭表面的活性位点以及改善孔隙结构，使制得的改性生物炭可以进一步提高捕捉和固定CO2的性能，同时进一步提高与水泥材料的相互作用，增强密实度和抗折性能、抗压性能，提高耐久性和使用寿命。制备方法工艺精简、成本降低、不易二次污染。水泥材料与改性生物炭还可以制得固碳水泥材料。
Modified biochar, preparation method thereof and carbon sequestration cement material
The invention relates to the technical field of new materials, in particular to modified biochar, a preparation method thereof and a carbon sequestration cement material. The preparation method comprises the following steps: adding a salt solution into solid waste for extraction treatment to obtain an extracting solution; adding soluble sulfide into the extracting solution for precipitation treatment to obtain a heavy metal precipitate and a modified solution; and performing modification treatment on the biochar by using the modified solution to obtain the modified biochar. The modified solution is rich in various active ions which can be combined with or react with functional groups rich in the biochar, so that active sites on the surface of the biochar are enriched, the pore structure is improved, the prepared modified biochar can further improve the performance of capturing and fixing CO2, and meanwhile, the interaction with a cement material is further improved; the compactness, the fracture resistance and the compression resistance are enhanced, the durability is improved, and the service life is prolonged. The preparation method is simple in process, low in cost and not prone to secondary pollution. The cement material and the modified charcoal can also be used for preparing a carbon-sequestration cement material.
本申请涉及新材料技术领域，尤其涉及改性生物炭及其制备方法、固碳水泥材料。制备方法包括如下步骤：向固废中加入盐溶液进行提取处理，得到提取液；向提取液中加入可溶性硫化物进行沉淀处理，得到重金属沉淀物和改性溶液；将改性溶液对生物炭进行改性处理，得到改性生物炭。改性溶液中富含多种活性离子，会与生物炭中富含的官能团结合或反应，丰富了生物炭表面的活性位点以及改善孔隙结构，使制得的改性生物炭可以进一步提高捕捉和固定CO2的性能，同时进一步提高与水泥材料的相互作用，增强密实度和抗折性能、抗压性能，提高耐久性和使用寿命。制备方法工艺精简、成本降低、不易二次污染。水泥材料与改性生物炭还可以制得固碳水泥材料。
Modified biochar, preparation method thereof and carbon sequestration cement material
改性生物炭及其制备方法、固碳水泥材料
LONG WUJIAN (author) / LI HAO (author) / ZHONG ANNAN (author) / HU KAIYUE (author) / LUO QILING (author) / DONG BIQIN (author) / XING FENG (author)
2025-01-14
Patent
Electronic Resource
Chinese
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