Abstract
Abstract
One of the most important techniques for converting complex organic waste into renewable energy in the form of biogas and effluent is anaerobic digestion. Several issues have been raised related to the effectiveness of the anaerobic digestion process in recent years. Hence nanoparticles (NPs) have been used widely in anaerobic digestion process for converting organic wastes into useful biogas and effluent in an effective way. This review addresses the knowledge gaps and summarizes recent researchers’ findings concentrating on the stability and effluent quality of the cattle manure anaerobic digestion process using single and combinations nanoparticle. In summary, the utilization of NPs have beneficial effects on CH4 production, process optimization, and effluent quality. Their function, as key nutrient providers, aid in the synthesis of key enzymes and co-enzymes, and thus stimulate anaerobic microorganism activities when present at an optimum concentration (e.g., Fe NPs 100 mg/L; Ni NPs 2 mg/L; Co NPs 1 mg/L). Furthermore, utilizing Fe NPs at concentrations higher than 100 mg/L is more effective at reducing H2S production than increasing CH4, whereas Ni NPs and Co NPs at concentrations greater than 2 mg/L and 1 mg/L, respectively, reduce CH4 production. Effluent with Fe and Ni NPs showed stronger fertilizer values more than Co NPs. Fe/Ni/Co NP combinations are more efficient in enhancing CH4 production than single NPs. Therefore, it is possible to utilize NPs combinations as additives to improve the effectiveness of anaerobic digestion.
Article highlights
Single NPs (e.g., Fe, Ni, and Co NPs) in low concentrations are more effective in increasing CH4 production than reducing H2S production.
Optimal Fe, Ni, and Co NP concentrations enhance anaerobic digestion process performance.
Addition of Fe, Ni, and Co NPs above tolerated concentration causes irreversible inhibition in anaerobic digestion.
Effluent with Fe, Ni, and Co NPs showed stronger fertilizer values.
Nanoparticle combinations are more effective for increasing the CH4 production than signal NPs.
Publisher
Springer Science and Business Media LLC
Subject
General Earth and Planetary Sciences,General Physics and Astronomy,General Engineering,General Environmental Science,General Materials Science,General Chemical Engineering
Reference143 articles.
1. Kumar A, Bhattacharya T, Hasnain SM, Nayak AK, Hasnain S (2020) Applications of biomass-derived materials for energy production, conversion, and storage. Mater Sci Energy Technol 3:905–920. https://doi.org/10.1016/j.mset.2020.10.012
2. Zakari A, Khan I, Tan D, Alvarado R, Dagar V (2022) Energy efficiency and sustainable development goals (SDGs). Energy 239:122365. https://doi.org/10.1016/j.energy.2021.122365
3. BP Energy Outlook (2017) Energy economics. pp 78. UK: BP. February 2017 edition. https://www.bp.com/content/dam/bp/business-sites/en/global/corporate/pdfs/energy-economics/energy-outlook/bp-energy-outlook-2017.pdf. (Accessed July 17, 2019)
4. IEA (2020) Outlook for biogas and biomethane: prospects for organic growth. Paris: IEA. International. Energy Agency. World energy outlook special report 2019. https://www.iea.org/reports/world-energy-outlook-2019
5. Rogelj J, Popp A, Calvin KV, Luderer G, Emmerling J, Gernaat D, Fujimori S, Strefler J, Hasegawa T, Marangoni G, Krey V (2018) Scenarios towards limiting global mean temperature increase below 1.5 C. Nat Clim Change 8(4):325. https://doi.org/10.1038/s41558-018-0091-3
Cited by
8 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献