Optimizing CO2 capture property of alkali-activated ladle slag materials with sodium dodecyl sulfate

IF 4.5 2区工程技术 Q2 ENGINEERING, CHEMICAL

Powder Technology Pub Date : 2024-10-24 DOI:10.1016/j.powtec.2024.120388

Binbin Huo , Yamei Zhang , Dongmin Wang

引用次数: 0

Abstract

Ladle slag is a kind of metallurgical solid waste with great potential to be used to prepare alkali-activated ladle slag materials (ALS) and to capture CO₂ due to its rich Ca and Si minerals. In this investigation, sodium dodecyl sulfate (SDS) was applied to optimize the microstructure of ALS, aiming to improve the CO₂ capture property of ALS. The effect of SDS on CO₂ capture property, compressive strength, pore structure and mineral evolution of ALS were comprehensively analyzed. The results show that adding SDS improves the CO₂ capture property of ALS, and at 0.20 % SDS dosage, the CO₂ capture capability of ALS reaches 6.17 %, a 48 % increase over the reference group. However, SDS incorporation decreases the compressive strength of ALS, but benefits for the carbon footprint owing to the improved CO₂ capture amount. This study provides a novel direction for optimizing the CO₂ capture properties and application of LS.

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用十二烷基硫酸钠优化碱激活钢包渣材料的二氧化碳捕获特性

钢包渣是一种冶金固体废弃物，因其富含 Ca 和 Si 矿物质，在制备碱活性钢包渣材料（ALS）和捕集二氧化碳方面具有巨大潜力。本研究采用十二烷基硫酸钠（SDS）优化 ALS 的微观结构，旨在提高 ALS 的二氧化碳捕集性能。研究全面分析了 SDS 对 ALS 的二氧化碳捕集性能、抗压强度、孔隙结构和矿物演化的影响。结果表明，添加 SDS 可改善 ALS 的二氧化碳捕集性能，当 SDS 用量为 0.20 % 时，ALS 的二氧化碳捕集能力达到 6.17 %，比参照组提高了 48 %。然而，加入 SDS 会降低 ALS 的抗压强度，但由于提高了二氧化碳捕获量，对碳足迹也有好处。这项研究为优化二氧化碳捕集性能和 LS 的应用提供了一个新的方向。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Powder Technology 工程技术-工程：化工

CiteScore

9.90

自引率

15.40%

发文量

1047

审稿时长

46 days

期刊介绍： Powder Technology is an International Journal on the Science and Technology of Wet and Dry Particulate Systems. Powder Technology publishes papers on all aspects of the formation of particles and their characterisation and on the study of systems containing particulate solids. No limitation is imposed on the size of the particles, which may range from nanometre scale, as in pigments or aerosols, to that of mined or quarried materials. The following list of topics is not intended to be comprehensive, but rather to indicate typical subjects which fall within the scope of the journal's interests: Formation and synthesis of particles by precipitation and other methods. Modification of particles by agglomeration, coating, comminution and attrition. Characterisation of the size, shape, surface area, pore structure and strength of particles and agglomerates (including the origins and effects of inter particle forces). Packing, failure, flow and permeability of assemblies of particles. Particle-particle interactions and suspension rheology. Handling and processing operations such as slurry flow, fluidization, pneumatic conveying. Interactions between particles and their environment, including delivery of particulate products to the body. Applications of particle technology in production of pharmaceuticals, chemicals, foods, pigments, structural, and functional materials and in environmental and energy related matters. For materials-oriented contributions we are looking for articles revealing the effect of particle/powder characteristics (size, morphology and composition, in that order) on material performance or functionality and, ideally, comparison to any industrial standard.