初步研究表明，与活性氧化铝相比，颗粒氢氧化铁（GFH）材料去除砷酸盐对常见水质成分的竞争不太敏感。GFH颗粒大小影响伪平衡结果，但大尺寸材料可能无法提供足够的颗粒内扩散时间。收到的GFH材料的粒径范围很广。中试和快速小规模柱试验（RSSCT）运行表明，比较结果的能力有限，尽管GFH介质在开关循环中的运行改善了整体砷酸盐去除。一种与颗粒活性炭（GAC）去除天然有机物（NOM）相似的概念性方法可能适用于无机离子去除（e。 g、 ，砷酸盐），通过多孔吸附剂（如GFH）。然而，这种标度方法必须回到我们用于（GAC）有机大分子标度方程的基本原理，并验证它们对较小无机离子的适用性。包括表格、数字。

Preliminary work has demonstrated that arsenate removal by granular ferric hydroxide (GFH) material is less sensitive to competition from common water quality constituents than activated alumina. GFH particle size affected pseudo-equilibrium results, but sufficient time for intraparticle diffusion may not have been provided with the large size material. As received GFH material has a wide range of particle sizes. Pilot and rapid small scale column test (RSSCT) operation demonstrated limited ability to compare results, although operation of GFH media in on-off cycles improved overall arsenate removal. A conceptual approach paralleling that developed for natural organic matter (NOM) removal by granular activated carbon (GAC) may be applicable for inorganic ion removal (e.g., arsenate) by porous sorbents (e.g., GFH). However, such scaling approaches must go back to the fundamental principles that we used to (GAC) scaling equations for organic macromolecules, and verify their applicability for smaller inorganic ions. Includes tables, figures.