从废水中预测性地将 (II) 移除到纤维素纳米晶纳米复合材料上,使用深度机器学习
Banza Jean Claude1, Vhahangwele Masindi1, Linda Lunga Sibali1,2
1Department of Environmental Science, College of Agriculture and Environmental Sciences, University of South Africa, Florida, South Africa.
概括
可生物降解的纤维素纳米晶 (CNC) 纳米复合材料有效地从水中去除 (II),达到98.3%的效率. 像ANFIS这样的机器学习模型准确地预测了性能,证实了它对可持续水处理的潜力.
科学领域:
- 材料科学 材料科学 材料科学
- 环境科学 环境科学
- 纳米技术纳米技术
背景情况:
- 水溶液中的 (II) 污染对环境和健康构成风险.
- 开发可持续和高效的吸附剂对于重金属的去除至关重要.
- 纤维素纳米晶 (CNC) 为吸附剂开发提供了可生物降解的平台.
研究的目的:
- 为了合成和表征一种可生物降解的基于CNC的纳米复合材料来去除 (II).
- 在各种条件下研究CNC纳米复合材料的吸附性能.
- 评估机器学习模型用于预测吸附效率的适用性.
主要方法:
- 使用FTIR证实了CNC与EDTA的功能.
- 使用SEM分析了表面形态.
- 热稳定性通过TGA进行评估.
- 进行批量吸附实验以优化参数 (pH,接触时间,剂量,度).
- 吸附动力学和同热量是使用兰木尔模型,伪二阶模型和杜比宁-拉杜什凯维奇模型来建模的.
- 人工神经网络 (ANN) 和自适应神经模糊推理系统 (ANFIS) 模型被开发用于预测.
主要成果:
- 该CNC纳米复合材料表现出粗,多孔的表面和高达320°C的热稳定性.
- 在pH值为6,接触时间为120分钟,剂量为8g/100mL,初始度为150mg/L时,达到98.3%的最大 (II) 去除效率.
- 电影扩散是限制速度的步骤 (R2=0.983).
- 吸附遵循兰格穆尔等温模型 (R2=0.996) 和伪二阶动力学,表明化学吸附 (能量=9.375 kJ/mol).
- ANN和ANFIS模型显示出高的预测准确性 (R2=0.987和R2=0.995,分别).
结论:
- 该CNC纳米复合材料是一种高效,热稳定和可持续的吸附剂,用于 (II) 去除.
- 开发的吸附剂在水性介质中表现出色.
- 机器学习模型 (ANN,ANFIS) 为优化吸附过程提供可靠的预测.
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