Scholarlink

<p>The ternary compounds such as erdite (NaFeS<sub>2</sub>‧2H<sub>2</sub>O) and potassium thioferrite (KFeS<sub>2</sub>) are attracting some interests from scientific communities due to their potential applicability in environmental protection. Such compounds were synthesized by using chemical-pure reagents and/or waste Fe-rich sludge, via alkaline hydrothermal route, and also developed from lab- to pilot-scale at the relative low temperature of 80&#xa0;°C under atmosphere condition. In this paper, the hydrothermal synthesis of two crystals was reviewed, in consideration of the parameters, e.g., OH<sup>−</sup>/HS<sup>−</sup> dosage, impurities, temperature, and Na<sup>+</sup>/K<sup>+</sup>. According, a newly process was explained for the radial growth of (FeS<sub>2</sub>)<sub>n</sub><sup>n−</sup> chain and cleavage as rods. The spontaneous hydrolysis and/or decomposition of erdite and/or KFeS<sub>2</sub> crystal in water solution was also discussed, along with their potential application in environmental pollution control.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Critical Review on Recycling of Erdite/KFeS2 Rods from Waste Sludge as Environmental Functional Materials

  • 期刊论文

  • 发表日期：

    2025年10月3日

查看全文
  • Yu Chen,
  • Jiewen Yang,
  • Dongxu Liang,
  • Ying Zhang,
  • Tong Sun,
  • Weilu Yang,
  • Suiyi Zhu,
  • Xinfeng Xie,
  • Temuujin Jadambaa

摘要

The ternary compounds such as erdite (NaFeS2‧2H2O) and potassium thioferrite (KFeS2) are attracting some interests from scientific communities due to their potential applicability in environmental protection. Such compounds were synthesized by using chemical-pure reagents and/or waste Fe-rich sludge, via alkaline hydrothermal route, and also developed from lab- to pilot-scale at the relative low temperature of 80 °C under atmosphere condition. In this paper, the hydrothermal synthesis of two crystals was reviewed, in consideration of the parameters, e.g., OH−/HS− dosage, impurities, temperature, and Na+/K+. According, a newly process was explained for the radial growth of (FeS2)nn− chain and cleavage as rods. The spontaneous hydrolysis and/or decomposition of erdite and/or KFeS2 crystal in water solution was also discussed, along with their potential application in environmental pollution control.