In this research, Aloe Vera leaf powder (OAMP) was modified with carboxylated carbon nanotubes (CNTs-COOH) and the prepared nanocomposite was used as a novel low cost adsorbent for the removal of cadmium ions from aqueous solutions. The prepared OAMP/CNTs-COOH nanocomposite was characterized by fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), Energy-dispersive x-ray spectroscopy (EDS) and Brunauer–Emmett–Teller (BET) analysis. The influence of operation parameters such as initial concentration of adsorbate, adsorbent dosage, contact time and pH of the cadmium solution on the cadmium adsorption process was studied by response surface methodology (RSM) optimization. The solid phase extraction (SPE) using OAMP/CNTs-COOH based-adsorbent was performed for the pre-concentration and matrix separation and inductively coupled plasma–mass spectrometry (ICP-MS) detector was used for measurement of cadmium ions concentration. The empirical adsorption data ...

中文翻译：

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响应面法在芦荟/羧化碳纳米管纳米复合材料低成本吸附剂优化除镉中的应用

在这项研究中，芦荟叶粉（OAMP）被羧化碳纳米管（CNTs-COOH）改性，制备的纳米复合材料被用作一种新型低成本吸附剂，用于从水溶液中去除镉离子。制备的OAMP / CNTs-COOH纳米复合材料的特征在于傅里叶变换红外光谱（FTIR），扫描电子显微镜（SEM），能量色散X射线光谱（EDS）和Brunauer-Emmett-Teller（BET）分析。通过响应面法（RSM）优化研究了吸附参数的初始浓度，吸附剂量，接触时间和镉溶液的pH等操作参数对镉吸附过程的影响。使用OAMP / CNTs-COOH基吸附剂进行固相萃取（SPE）进行预浓缩和基质分离，并使用电感耦合等离子体质谱（ICP-MS）检测器测量镉离子浓度。经验吸附数据...