水合氧化铬吸附剂及其制备工艺研究

Research on Chromium Oxide Hydrate Adsorbent and Its Preparation Process

摘要

水合氧化铬作为具备高效性能的介孔吸附材料，在铬盐工业含钒废水治理相关工作中应用价值颇高。本文对γ-CrOOH与Cr(OH)₃两类水合氧化铬吸附剂的研究进展予以系统综述，梳理其结构相关特性、主流制备工艺、钒吸附表现、作用机理及再生应用，比较氢气还原、碱沉淀、水热、焙烧法各自的工艺特征，揭示比表面积、孔结构和吸附性能的结构—功能关系，归纳化学吸附为主、静电吸引为辅的吸附机制，以期为水合氧化铬吸附剂的研发和工业化应用提供理论参考。

Abstract

As a mesoporous adsorbent with high performance, hydrated chromium oxide holds significant application value in the treatment of vanadium-containing wastewater from the chromium salt industry. This paper provides a systematic review of the research progress on two types of hydrated chromium oxide adsorbents—γ-CrOOH and Cr(OH)₃—covering their structural characteristics, mainstream preparation methods, vanadium adsorption performance, mechanisms of action, and regeneration techniques. It compares the distinct process features of hydrogen reduction, alkaline precipitation, hydrothermal treatment, and calcination methods, elucidates the structure-function relationships between specific surface area, pore structure, and adsorption performance, and summarizes an adsorption mechanism dominated by chemical adsorption with electrostatic attraction playing a supplementary role. The findings aim to provide theoretical references for the development and industrial application of hydrated chromium oxide adsorbents.

关键词

水合氧化铬 / 吸附剂 / 制备工艺 / 钒污染 / 废水处理

Key words

hydrated chromium oxide / adsorbent / preparation process / vanadium contamination / wastewater treatment

参考文献

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