Abstract

In this work, copper-modified nanoalum as a new natural-based sorbent was synthesized and characterized. Then, it was applied for methyl orange removal from water samples. The effect of some parameters such as initial dye concentration, pH, adsorbent dose and temperature on the removal efficiency was investigated. Under optimal condition, the maximum removal was obtained about 90%. The studies showed the adsorption of methyl orange on the surface of modified nanoalum obeys from Langmuir model with the adsorption capacity 139 mg/g. Therefore, this novel natural-based sorbent can be proposed as a low cost and commercially available adsorbent in the removal of azo dyes such as methyl orange from wastewaters.

摘要

在这项工作中，合成并表征了铜改性纳米铝作为一种新型的天然吸附剂。然后，用于去除水样中的甲基橙。研究了一些参数如初始染料浓度、pH、吸附剂剂量和温度对去除效率的影响。在最佳条件下，最大去除率约为 90%。研究表明，甲基橙在改性纳米铝表面的吸附符合朗缪尔模型，吸附量为 139 mg/g。因此，这种新型的天然吸附剂可以作为一种低成本和市售的吸附剂，用于去除废水中的偶氮染料（如甲基橙）。