使用机器学习预测CO2和NaCl水溶液的界面张力
Kashif Liaqat1, Daniel J Preston2, Laura Schaefer2
1Department of Mechanical Engineering, Rice University, Houston, TX, 77005, USA. Kashif.Liaqat@rice.edu.
Scientific reports
|July 15, 2025
概括
机器学习准确地预测了用于碳捕集的CO2-盐水界面张力. 支持矢量机和多层感知器模型表现出卓越的性能,为实验测量提供了具有成本效益的替代方案.
科学领域:
- 地质化学和环境科学
- 计算化学的计算化学
- 材料科学 材料科学 材料科学
背景情况:
- 二氧化碳的地质封存对于碳中和至关重要.
- 二氧化碳和盐水之间的界面张力 (IFT) 影响二氧化碳储存能力.
- 实验IFT测量具有挑战性,耗时且昂贵.
研究的目的:
- 为了比较各种机器学习 (ML) 模型在预测二氧化碳盐溶液IFT方面的有效性.
- 在各种条件下确定最准确的ML模型用于IFT预测.
- 建立ML作为实践IFT测定实验的可行,高效的替代方案.
主要方法:
- 使用多个ML模型:线性回归 (LR),支向量机 (SVM),决策树回归器 (DTR),随机森林回归器 (RFR) 和多层感知器 (MLP).
- 在一个涵盖温度,压力和NaCl盐度的广泛范围的实验数据集上训练模型.
- 使用超参数调整优化模型,并通过平均绝对误差 (MAE) 和平均绝对百分比误差 (MAPE) 评估性能.
主要成果:
- SVM和MLP模型实现了最高的精度,MAPE为~0.97-0.99%和MAE为~0.39-0.40 mN/m.
- 线性回归的表现很差 (MAPE 4.25%,MAE 1.7 mN/m). 在线性回归的表现很差 (MAPE 4.25%,MAE 1.7 mN/m).
- 压力被确定为影响IFT的最重要因素.
结论:
- 优化的ML模型,包括SVM和MLP,提供高度准确的CO2-盐水IFT预测.
- ML为IFT测量提供了实验方法的经济有效和高效的替代方案.
- 这种方法可以显著帮助优化地质二氧化碳封存策略.
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