Microwave radiation was used for synthesis of an adsorbent using rice husk. The activation of the rice husk sample was performed by H 3 PO 4 and 6 min of the microwave radiation with power 700 W. The synthesized adsorbent was characterized by SEM, FT-IR, BET and XRD techniques. These analyses showed the prepared adsorbent is an amorphous and mesoporous nano-adsorbent with BET surface area 276.43 m 2 /g. It has some aromatic groups and O-H, C-C, C-O and C-O bands in its structure. Adsorption of alizarin yellow on the synthesized nano-adsorbent was investigated and the influences of adsorbent dosage (0.1–2g/L) and temperature (25–40 ·C) on dye removal from aqueous solution were investigated. The kinetic, equilibrium and thermodynamics studies of alizarin yellow removal from aqueous solution using the prepared adsorbent were carried out. The adsorption performance of alizarin yellow on the prepared adsorbent was compared with a commercial activated carbon. The importance of this study is in providing a condition for preparation of a low cost adsorbent with high adsorption capacity (712.63 mg/g) for alizarin yellow. The comparison of adsorption capacities of the prepared adsorbent from rice husk and other adsorbents proved it is a perfect adsorbent.

中文翻译：

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稻壳微波助剂制备高性能吸附剂

微波辐射用于使用稻壳合成吸附剂。稻壳样品的活化通过 H 3 PO 4 和 6 分钟功率为 700 W 的微波辐射进行。合成的吸附剂通过 SEM、FT-IR、BET 和 XRD 技术进行表征。这些分析表明所制备的吸附剂是一种无定形介孔纳米吸附剂，BET 表面积为276.43 m 2 /g。它的结构中有一些芳香族基团和OH、CC、CO和CO带。研究了茜素黄在合成纳米吸附剂上的吸附情况，考察了吸附剂用量（0.1-2g/L）和温度（25-40℃）对水溶液中染料去除的影响。对制备的吸附剂从水溶液中去除茜素黄进行动力学、平衡和热力学研究。将茜素黄对制备的吸附剂的吸附性能与市售活性炭进行比较。该研究的重要性在于为制备具有高吸附容量（712.63 mg/g）的茜素黄的低成本吸附剂提供了条件。由稻壳制备的吸附剂与其他吸附剂的吸附能力比较证明它是一种完美的吸附剂。