Abstract A batch adsorption experiments were carried out to study the role of nanoparticles and nanocomposite on removal of some heavy metals and fungicides from aqueous solution. Nano-Hydroxyapatite(n-HAP), Nano-Bentonite (n-Bo) and Bentonite-hydroxyapatite nanocomposite (B-HAP NC) evaluated for the removal of some heavy metals and fungicides. The nanoparticles and nanocomposite were characterized by TEM, SEM and AFM, X-ray powder diffraction (XRD) and BET surface area. The batch adsorption was done using nanoparticles with Pb2+ and Ni2+ as example of heavy metals with concentrations up to 25 mgL−1. Also, the adsorption experiment was conducted using nano-particles (n-HAP, n-Bo and B-HAP NC) with fungicides Stop Feng and Eurozole with concentrations 20 to 200 μg L−1. Langmuir and Freundlich isotherm equations were employed to study the adsorption. The adsorption kinetics were conducted metal ion (Pb2+ and Ni2+) with residence time. The results indicated the maximum adsorption capacity of Ni+2 was occurred on (n-HAP). While that maximum adsorption capacity of Pb2+ was occurred on (B-HAP NC). The rate of Ni+2 removal was found to be very rapid during the initial 60 min. The adsorption of Pb+2 by the n-HAP and (B-HAP NC)was a slow increase with time, it did not bring any remarkable effect. Also, the efficiency of adsorbent compounds used to remove the residue of fungicides Stop Feng and Eurozole shown the highest removal rates obtained with used nano-Hydroxyapatite followed by Bentonite-hydroxyapatitenanocomposite and nano-Bentonite, respectively.The current results are very useful in the treatment of wastewater and the removal of heavy metals and fungicides, Consequently making them suitable for agricultural purposes.

中文翻译：

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使用纳米羟基磷灰石、纳米膨润土和纳米复合材料去除水溶液中的一些重金属和杀菌剂

摘要 通过批量吸附实验研究了纳米颗粒和纳米复合材料对去除水溶液中某些重金属和杀菌剂的作用。评估了纳米羟基磷灰石 (n-HAP)、纳米膨润土 (n-Bo) 和膨润土-羟基磷灰石纳米复合材料 (B-HAP NC) 对某些重金属和杀菌剂的去除效果。通过 TEM、SEM 和 AFM、X 射线粉末衍射 (XRD) 和 BET 表面积对纳米颗粒和纳米复合材料进行了表征。使用含 Pb2+ 和 Ni2+ 的纳米粒子进行批量吸附，例如浓度高达 25 mgL-1 的重金属。此外，使用纳米颗粒（n-HAP、n-Bo 和 B-HAP NC）与浓度为 20 至 200 μg L-1 的杀菌剂 Stop Feng 和 Eurozole 进行吸附实验。Langmuir 和 Freundlich 等温方程用于研究吸附。吸附动力学是通过金属离子（Pb2+ 和 Ni2+）与停留时间进行的。结果表明，Ni+2 的最大吸附容量出现在 (n-HAP) 上。而 Pb2+ 的最大吸附容量发生在 (B-HAP NC) 上。在最初的 60 分钟内，发现 Ni+2 的去除速度非常快。n-HAP和(B-HAP NC)对Pb+2的吸附随时间缓慢增加，未带来显着效果。此外，用于去除杀菌剂 Stop Feng 和 Eurozole 残留物的吸附剂化合物的效率显示，使用纳米羟基磷灰石获得的去除率最高，其次是膨润土-羟基磷灰石复合材料和纳米膨润土。 目前的结果在处理中非常有用废水和去除重金属和杀菌剂，