Existing research on phosphorus removal from wastewater mostly focused on inorganic phosphorus while ignoring organic phosphorus, which has potential bioavailability. This study aims to provide an innovation for the development of advanced treatment material for both inorganic and organic phosphorus removal in water. In this study, ferrihydrite loaded on the graphene oxide (FeOOH-GO) composite adsorbent was synthesized by surface precipitation method, and its ability to remove both phosphate and diazinon as forms of inorganic and organic phosphorous from water was investigated. Characterization of the loaded composite using X-ray diffraction (XRD), scanning electron microscope (SEM), and Fourier transform-infrared spectroscopy (FTIR) indicated that FeOOH was successfully loaded onto graphene. The results of batch adsorption experiments showed that the adsorbent could remove both inorganic and organic phosphorus compounds simultaneously from water. When FeOOH content is 40%, the equilibrium adsorption amount of FeOOH-GO composite adsorbent for phosphate and diazinon was 5.81 and 23.20 mg g⁻¹, respectively. Environmental parameters such as pH and initial concentration have important influence on phosphorus removal by FeOOH-GO composite adsorbent and the removal efficiency of the inorganic and organic phosphorus from water decreases by increasing the initial concentration of phosphate and diazinon and the pH. It was concluded that the FeOOH-GO composite adsorbent has great potential to remove both inorganic and organic phosphate simultaneously from contaminated water.

中文翻译：

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通过水铁矿装饰到石墨烯上从水溶液中去除无机和有机磷化合物。

现有的废水脱磷研究主要集中在无机磷上，而忽略了具有潜在生物利用度的有机磷。这项研究旨在为开发用于去除水中无机和有机磷的高级处理材料提供创新。在这项研究中，通过表面沉淀法合成了负载在氧化石墨烯（FeOOH-GO）复合吸附剂上的三水铁矿，并研究了其去除水中无机和有机磷形式的磷酸盐和二嗪农的能力。使用X射线衍射（XRD），扫描电子显微镜（SEM）和傅立叶变换红外光谱（FTIR）对负载的复合材料进行表征，表明FeOOH已成功加载到石墨烯上。分批吸附实验结果表明，该吸附剂可以同时从水中去除无机磷和有机磷化合物。当FeOOH含量为40％时，FeOOH-GO复合吸附剂对磷酸盐和二嗪农的平衡吸附量为5.81和23.20 mg g^-1。pH和初始浓度等环境参数对FeOOH-GO复合吸附剂对磷的去除具有重要影响，并且通过增加磷酸盐和二嗪农的初始浓度以及pH值，从水中去除无机和有机磷的效率会降低。结论是，FeOOH-GO复合吸附剂具有同时从污染水中去除无机磷酸盐和有机磷酸盐的巨大潜力。