本研究旨在评估其可行性 以及粒状氢氧化铁的成本效益 （GFH）用于除砷，以响应2002年 美国环境保护局（USEPA）降低砷最大污染物 饮用水中的浓度达到10微克/升。这项研究建立了模型 吸附活化能、动力学和 等温线热力学参数。结果显示 GFH是一种有前途且具有成本效益的砷（V），或 As（V），吸附剂。GFH容易吸附As（V）并具有 动力学表明吸附容量大 和等温线模型。吸附是非线性的，非均相的， 而且是多层的。它也可能受到损害 通过竞争性阴离子的存在，例如 天然土壤中的二氧化硅、钒、硒和磷酸盐 水域。例如，二氧化硅的干扰可能 需要一个预处理步骤来延长GFH的寿命 作为砷吸收剂。这可以通过以下方式实现: 常用的混凝/絮凝单元工艺。 建立的热力学参数 GFH As（V）的移除将有助于水务设施经理 比较并找到最合适的除砷方法 满足其公用事业需求的策略。包括33个参考文献、表格和图表。

This research was undertaken to evaluate the feasibility and cost-effectiveness of granular ferric hydroxide (GFH) for arsenic removal, in response to the 2002 US Environmental Protection Agency (USEPA) lowering of the arsenic maximum contaminant level to 10 µg/L in drinking water. The research modeled the adsorption activation energy, kinetics, and isotherm thermodynamic parameters. Results show GFH to be a promising and cost-effective arsenic(V), or As(V), sorbent. GFH adsorbs As(V) readily and has a large As(V) adsorption capacity indicated by kinetics and isotherm models. The adsorption is nonlinear, heterogeneous, and multilayered. It can also be compromised by the presence of competitive anions, such as silica, vanadium, selenium, and phosphate in natural waters. The interference of silica, for example, may require a pretreatment step to prolong the life of GFH as an arsenic sorbent. This could be achieved through the commonly used unit process of coagulation/flocculation. The thermodynamics parameters established for GFH As(V) removal will help water utility managers compare and find the most suitable arsenic removal strategy to meet the needs of their utilities. Includes 33 references, tables, figures.