无氧消化器技术评估的多重标准决策分析技术
Amsalu Tolessa1,2,3, Neill J Goosen1,2, Tobias M Louw1
1Department of Chemical Engineering, Stellenbosch University, Private Bag X1, Matieland, 7602, Stellenbosch, South Africa.
Heliyon
|February 2, 2024
概括
这项研究结合了SMART和AHP方法,为南非农民选择了最佳的小型无氧消化器技术. 发现DIY生物袋和Puxin消化机是最受欢迎的选择.
科学领域:
- 农业工程 农业工程
- 环境科学 环境科学
- 决策科学 决策科学 决策科学
背景情况:
- 在技术选择中,有效的决策需要评估多个标准.
- 小规模无氧消化机技术对于低至中等收入国家至关重要.
- 以前的方法往往无法充分解决技术采用的多标准决策问题的复杂性.
研究的目的:
- 开发和应用一个多标准的选择方法来评估小规模无氧消化器技术.
- 在不同的农业环境下,为南非小农确定最适合的消化器技术.
- 为在类似环境中选择技术提供强大的决策支持工具.
主要方法:
- 结合了简单的多属性评级技术 (SMART) 和分析层次流程 (AHP) 进行多标准决策分析.
- 评估了11种潜在的小规模消化器技术.
- 将开发的方法应用于两个不同的场景:南非的自给自足和以商业为导向的小农农业.
主要成果:
- 在自给自足的农业场景中,DIY生物袋消化器是最受欢迎的 (82.1%).
- 在以商业为导向的农业场景中,Puxin消化机是首选的 (73.7%),取决于资金和施工可行性.
- 在这两种情况中,AGAMA BiogasPro消化器排名第二,这表明其表现强.
结论:
- 开发的模型提供了一个基于知识的框架,用于选择合适的小规模无氧消化器技术.
- 生物袋和Puxin消化机成为领先的选择,其适用性取决于特定的农民环境和经济条件.
- 灵敏度分析证实了所选替代品的稳定性和稳定性,支持了模型的可靠性.
相关概念视频
Microbial Wastewater Treatment
Microbial communities in aquatic ecosystems play a key role in the natural breakdown of contaminants introduced through domestic and industrial effluents. Acting as biological catalysts, these microbes change and mineralize a wide range of organic and inorganic pollutants under different redox conditions.In oxygen-rich surface waters, aerobic heterotrophs lead organic matter breakdown, using oxygen as the terminal electron acceptor to efficiently oxidize substrates to carbon dioxide and water.
Microbial Fuel Cells
Microbial fuel cells (MFCs) are bioelectrochemical devices that generate electricity by exploiting the metabolic processes of electrogenic bacteria. These systems provide a renewable energy source and serve as an innovative method for treating organic waste, such as wastewater.A typical MFC consists of two chambers: an anoxic (oxygen-free) compartment that houses the bacteria and an oxic (oxygen-rich) compartment that contains oxygen as the terminal electron acceptor. Many MFCs use proton...
Bioreactor Design and Operational System
Bioreactors are engineered vessels designed to cultivate microorganisms under controlled conditions for industrial bioprocessing. They maintain sterility and allow precise regulation of pH, temperature, oxygen, and nutrient levels to optimize microbial growth and metabolite production. Bioreactors range from small laboratory units of 1 liter to industrial systems holding up to 500,000 liters, though only about 75% of their volume is actively used for fermentation. The remaining headspace...
Methods of Medium Optimization
Optimizing growth media enhances microbial proliferation and maximizes product yield. Statistical experimental design methodologies provide structured and reproducible approaches, offering progressively higher levels of robustness and efficiency.The One-Factor-at-a-Time (OFAT) MethodThe One-Factor-at-a-Time (OFAT) method involves adjusting a single variable while keeping all others constant. However, it cannot detect interactions between variables, often leading to suboptimal outcomes when...


