SO₂ and NO_x emissions from iron and steel production pollute the atmosphere. With the implementation of ultra-low emission standards, the requirements for flue gas purification have become more stringent. Activated carbon, due to its rich surface chemistry, stable physical structure, and excellent adsorption and renewability, has a significant effect on the synergistic removal of multiple pollutants from industrial flue gas, and its industrial application has achieved a SO₂ removal rate of ≥98% and a NO_x removal rate of ≥83%. Firstly, we analyze the structure of activated carbon and the adsorption principle, discuss the mechanism of desulfurization and denitrification, and explore the shortcomings of the technology; then, we summarize the modification methods of activated carbon, determine the impregnation method of loading non-precious metal oxides as the optimal solution, and elucidate the loading conditions, process, and reaction mechanism; finally, we discuss the current status of the research, analyze the process deficiencies and the direction of optimization, and look forward to the prospect of development.

The implementation of ultra-low emission standards in the steel industry imposes higher demands on flue gas purification. Carbon-based materials, leveraging their porous structure and surface activity, demonstrate high adsorption potential for treating heavy metal ions, sulfur- and nitrogen-containing compounds, and volatile organic pollutants. However, their application is constrained by a limited selective adsorption capacity. This paper systematically analyzes the mechanisms by which carbon-based materials treat water, air, and soil pollutants; investigates their physical and chemical degradation patterns; and summarizes practical physicochemical modification pathways. Research indicates that modification techniques can effectively overcome performance limitations of carbon-based materials, enhance pollutant adsorption efficiency, and provide new insights for the engineering application of multi-media pollution synergistic control and environmental remediation technologies.

Under the Belt and Road Initiative, whether architectural education effectively supports sustainability-oriented overseas practice remains insufficiently evidenced. Anchored in the Royal Institute of British Architects (RIBA) and the National Architectural Accrediting Board (NAAB) competency frameworks, this study constructs a tripartite analytical framework linking international standards, educational curricula, and overseas job requirements. Based on curriculum texts and 200 overseas job postings from major international recruitment platforms, paragraph-level semantic alignment is quantified using TF-IDF weighting, SBERT-based embeddings, cosine similarity, and clustering analysis. The results indicate a clear structural divergence: while domestic architectural education shows moderate alignment with overseas demand in foundational technical competencies (average similarity 0.58–0.62), it consistently underperforms in sustainability-critical dimensions—including BIM-based collaboration, international standard adaptation, cross-cultural coordination, and professional ethics—with similarity values below 0.45. This misalignment reflects a systemic imbalance between design-centered training and the governance-oriented competency structure required for sustainable overseas projects, providing a quantitative diagnostic basis for reconfiguring sustainability-oriented architectural education.