In the current study the application of organo‐modified bentonite for the adsorption of mycotoxins (aflatoxin B1, citrinin, patulin, and zearalenone) is presented. The modification of clays is carried out using benzyl‐tri‐n‐butyl ammonium bromide (BTB), benzethonium chloride (BTC), and dioctyl sodium sulfosuccinate (DSS). Various experimental parameters such as pH, time, adsorbent dose, and mycotoxins concentration are thoroughly studied. The modified clays (B‐BTB, B‐BTC and B‐DSS) are characterized by X‐ray fluorescence, X‐ray diffraction, and Fourier transform infrared spectroscopy. The results depicted the high detoxification efficiency (≈99%) of modified clays for the removal of mycotoxins under optimized conditions (pH 5, time: 30 min, adsorbent amount: 50 mg). The adsorption capacities of modified clays are found in the order of: B‐BTC (AFB1: 18.02, CIT: 18.35, PAT: 18.21, ZEA: 18.09 mg g⁻¹) > B‐BTB (AFB1: 17.7, CIT: 18.11, PAT: 17.95, ZEA: 17.90 mg g⁻¹) > B‐DSS (AFB1: 17.5, CIT: 18.02, PAT: 17.86, ZEA: 17.80 mg g⁻¹). The obtained results fitted well with thermodynamic, isothermal (Langmuir) and pseudo‐second order kinetics. Low cost organo‐modified bentonite shows the promise in mitigating mycotoxin contamination, which could improve food safety and reduce environmental contamination.

中文翻译：

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有机膨润土对霉菌毒素的绿色环保去除；等温，动力学和热力学研究

在当前的研究中，介绍了有机改性的膨润土在霉菌毒素（黄曲霉毒素B1，citrinin，棒曲霉素和玉米赤霉烯酮）吸附中的应用。粘土的修改是使用苄基-三- Ñ叔丁基溴化铵（BTB），苄索氯铵（BTC）和磺基琥珀酸二辛酯钠（DSS）。深入研究了各种实验参数，例如pH，时间，吸附剂剂量和霉菌毒素浓度。改性粘土（B-BTB，B-BTC和B-DSS）的特征在于X射线荧光，X射线衍射和傅立叶变换红外光谱。结果表明，在优化的条件下（pH 5，时间：30分钟，吸附剂量：50 mg），改性粘土对霉菌毒素的去除效率很高（约99％）。改性粘土的吸附能力按以下顺序排列：B‐BTC（AFB1：18.02，CIT：18.35，PAT：18.21，ZEA：18.09 mg g ^-1）> B‐BTB（AFB1：17.7，CIT：18.11， PAT：17.95，ZEA：17.90 mg g ^-1）> B‐DSS（AFB1：17.5，CIT：18.02，PAT：17.86，ZEA：17.80 mg g ^-1）。获得的结果与热力学，等温（Langmuir）和拟二级动力学非常吻合。低成本的有机改性膨润土显示出减轻霉菌毒素污染的希望，这可以提高食品安全性并减少环境污染。