{"title":"Strategies for effective foam mitigation in industrial biodigestors: A state-of-the-art analysis","authors":"","doi":"10.1016/j.psep.2024.09.059","DOIUrl":null,"url":null,"abstract":"<div><p>In the renewable energies scenario, biogas has several advantages, such as reducing greenhouse gas emissions, the possibility of decentralized production, and using a wide variety of substrates. Many operational factors significantly impact biogas production efficiency, and failure to ideally align them can lead to adverse situations in the production process. In this context, uncontrolled foam formation is one of these main negative factors. To obtain a better understanding of foam formation during biogas production, this article carried out a survey of the most likely causes. The most relevant factors found are the inefficient agitation system, the excess organic loading rate into the equipment, and the stress of the microbial community. In addition, ways of mitigating the formed foam were investigated, and this work provides effective guidelines to overcome this problem, such as maintaining the agitation efficiently, regulating temperature and pH within ideal ranges, and controlling the microbial community with the application of antifoams being the most relevant action. Therefore, understanding the mechanisms of foam formation and mitigation methods will help develop more efficient forms of industrial operation. Finally, future research directions were proposed for anaerobic digestion and foam formation.</p></div>","PeriodicalId":20743,"journal":{"name":"Process Safety and Environmental Protection","volume":null,"pages":null},"PeriodicalIF":6.9000,"publicationDate":"2024-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Process Safety and Environmental Protection","FirstCategoryId":"93","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0957582024011984","RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ENGINEERING, CHEMICAL","Score":null,"Total":0}
引用次数: 0
Abstract
In the renewable energies scenario, biogas has several advantages, such as reducing greenhouse gas emissions, the possibility of decentralized production, and using a wide variety of substrates. Many operational factors significantly impact biogas production efficiency, and failure to ideally align them can lead to adverse situations in the production process. In this context, uncontrolled foam formation is one of these main negative factors. To obtain a better understanding of foam formation during biogas production, this article carried out a survey of the most likely causes. The most relevant factors found are the inefficient agitation system, the excess organic loading rate into the equipment, and the stress of the microbial community. In addition, ways of mitigating the formed foam were investigated, and this work provides effective guidelines to overcome this problem, such as maintaining the agitation efficiently, regulating temperature and pH within ideal ranges, and controlling the microbial community with the application of antifoams being the most relevant action. Therefore, understanding the mechanisms of foam formation and mitigation methods will help develop more efficient forms of industrial operation. Finally, future research directions were proposed for anaerobic digestion and foam formation.
期刊介绍:
The Process Safety and Environmental Protection (PSEP) journal is a leading international publication that focuses on the publication of high-quality, original research papers in the field of engineering, specifically those related to the safety of industrial processes and environmental protection. The journal encourages submissions that present new developments in safety and environmental aspects, particularly those that show how research findings can be applied in process engineering design and practice.
PSEP is particularly interested in research that brings fresh perspectives to established engineering principles, identifies unsolved problems, or suggests directions for future research. The journal also values contributions that push the boundaries of traditional engineering and welcomes multidisciplinary papers.
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