In this study, resin-based hydrated iron oxide (HFOR) composites were prepared and used as a functional adsorbent for the simultaneous removal of p-Arsanilic acid (p-ASA) and arsenate (As (V)). The effects of solution pH and coexisting substances on the adsorption of different arsenic species were also investigated. Results showed that the coexisting substances slightly affected the adsorption process of two arsenic species. Analysis of the adsorption behavior, isotherm equilibrium, and adsorption kinetics, as well as that results of the X-ray photoelectron spectroscopy, zeta potential, and other analytical methods revealed that the satisfactory adsorption performance of HFOR can be attributed to the electrostatic interactions induced by the positively charged groups and the coordination of the hydrated iron oxide nanoparticles, which exhibited excellent specific adsorption for both arsenic species. Moreover, HFOR showed high acid and alkali resistance and reusability, as well as a constant co-removal performance for different arsenic species in five consecutive operating cycles (55 mg As/g of As(V) and 18 mg/g of p-ASA). Results of continuous running fixed-bed column experiments confirmed that HFOR enabled excellent simultaneous adsorption for p-ASA and As(V).

在这项研究中，制备了基于树脂的水合氧化铁（HFOR）复合材料，并用作功能性吸附剂，用于同时去除对砷酸（p-ASA）和砷酸盐（As（V））。还研究了溶液pH值和共存物质对不同砷物种吸附的影响。结果表明，共存物质对两种砷的吸附过程影响很小。分析吸附行为，等温线平衡和吸附动力学，以及X射线光电子能谱，ζ电位和其他分析方法的结果表明，HFOR令人满意的吸附性能可以归因于HFOR引起的静电相互作用。带正电的基团和水合氧化铁纳米粒子的配位，对两种砷都有极好的比吸附。此外，HFOR在五个连续的操作周期（55 mg As / g As（V）和18 mg / g p-ASA）中显示出较高的耐酸碱性能和可重复使用性，以及对不同砷物种的恒定共去除性能。 ）。连续运行固定床色谱柱实验的结果证实，HFOR能够出色地同时吸附p-ASA和As（V）。