添加二氧化硅对碱活化高炉渣铅离子吸附能力的影响

IF 0.8 4区材料科学 Q4 MATERIALS SCIENCE, CERAMICS Glass Physics and Chemistry Pub Date : 2023-12-27 DOI:10.1134/S1087659623600035

Yosuke Uchida, Takumi Iwaki, Teruhisa Hongo

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引用次数: 0

摘要

摘要高炉矿渣是钢铁生产过程中产生的大量副产品。本研究探讨了一种通过碱活化高炉矿渣合成高吸附能力铅离子吸附剂的方法。使用氢氧化钠水溶液作为碱活化剂，并在水溶液中加入二氧化硅以提高吸附能力。用氢氧化钠水溶液对高炉炉渣进行碱活化，可得到铅离子吸附剂。在氢氧化钠水溶液中加入二氧化硅可进一步提高铅离子的吸附能力。朗缪尔吸附等温线表明，在 50 毫升氢氧化钠水溶液中加入 5 克二氧化硅时，最大吸附容量为 1658.1 毫克-铅/克。在氢氧化钠水溶液中加入 10 克以上的二氧化硅时，铅离子的吸附容量下降。

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Effect of Silica Addition on Lead Ion Adsorption Ability of Alkali-Activated Blast Furnace Slag

Blast furnace slag is produced in large quantities as a by-product in the steel manufacturing process. In this study, a method for synthesizing lead ion adsorbent with high adsorption ability was investigated by alkali activation of the blast furnace slag. A sodium hydroxide aqueous solution was used as an alkali activator, and silica was added to the aqueous solution to improve the adsorption capacity. Alkali activation of the blast furnace slag with the sodium hydroxide aqueous solution yielded lead ion adsorbent. Addition of silica to the sodium hydroxide aqueous solution further increased the lead ion adsorption capacity. Langmuir adsorption isotherms revealed that the highest maximum adsorption capacity of 1658.1 mg-Pb/g was obtained when 5 g of silica was added to 50 mL of the sodium hydroxide aqueous solution. The adsorption capacity for lead ion decreased when more than 10 g of silica was added to the sodium hydroxide aqueous solution.

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来源期刊

Glass Physics and Chemistry 工程技术-材料科学：硅酸盐

CiteScore

1.20

自引率

14.30%

发文量

审稿时长

6-12 weeks

期刊介绍： Glass Physics and Chemistry presents results of research on the inorganic and physical chemistry of glass, ceramics, nanoparticles, nanocomposites, and high-temperature oxides and coatings. The journal welcomes manuscripts from all countries in the English or Russian language.