在DIET增强的无氧消化中生产沼气的机械模型的比较评估
Satya Brat Tiwari1, Sourabh Dixit2, Vinay Kumar Tyagi3
1School of Civil and Environmental Engineering, Nanyang Technological University, 50 Nanyang Avenue, 639798, Singapore; Residues and Resource Reclamation Centre (R3C), Nanyang Environment and Water Research Institute, Nanyang Technological University, 1 Cleantech Loop, CleanTech One, 637141, Singapore; Interdisciplinary Graduate Program, Nanyang Technological University, Singapore.
Journal of environmental management
|July 20, 2025
概括
陈和哈西莫托模型准确地预测了直接跨物种电子转移增强的无氧消化过程中的生物气体生产,其表现优于其他模型. 机器学习方法用于校准,选择和评估.
科学领域:
- * 环境科学 环境科学
- * 化学工程 化学工程
- * 生物技术 * 生物技术
背景情况:
- * 统计模型对于预测无氧消化 (AD) 中的生物气体产量至关重要.
- *现有模型需要对新系统进行验证,例如直接跨物种电子转移 (DIET) 增强的共消化.
- *机器学习 (ML) 为模型校准,选择和评估提供了强大的方法.
研究的目的:
- * 为了比较分析第一阶动力学,修改后的戈珀茨模型,以及陈和橋本 (CH) 模型的预测性能.
- * 通过 DIET 增强的污水污泥和小麦的共同AD 来评估这些模型,使用新的数据集.
- * 应用ML技术进行严格的模型评估,并确定最佳的预测模型.
主要方法:
- *使用了由DIET增强的污水污泥与小麦共同无氧消化的数据集.
- * 采用ML用于模型校准 (L-BFGS-B,BFGS优化) 和基于根平均平方误差 (RMSE) 的选择.
- * 进行了灵敏度分析 (Morris,Sobol') 以确定关键模型参数,并对测试数据 (R2,斜率) 的性能进行了评估.
主要成果:
- *CH模型被认为是最佳的,与第一阶段的动力和修改的戈珀茨模型相比,其RMSE降低了40-67%.
- * 灵敏度分析表明,CH常数 (KCH) 的影响最小,而最终的沼气潜力 (G0) 是高度敏感的.
- *模型评估显示,CH模型对测试数据的预测准确度 (R2和接近统一的斜率) 是令人满意的.
结论:
- *CH模型非常适合预测DIET增强的co-AD系统中的沼气产量.
- * ML驱动的模型选择和评估提供了可靠的性能评估.
- *建议进行进一步的ML调查,以探索这些模型在各种AD过程中的更广泛适用性.
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