Recent Advances of Biogas Production and Future Perspective

Korbag, Issa; Omer, Salma Mohamed Saleh; Boghazala, Hanan; Abusasiyah, Mousay Ahmeedah Aboubakr

doi:10.5772/intechopen.93231

Cited by 28 publications

(8 citation statements)

References 159 publications

(218 reference statements)

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“…Some physicochemical and biological technologies include cleaning and upgrading techniques to evaluate the raw biogas quality. Biological methods, cryogenic separation, hydrate separation, membrane enrichment, in situ upgrading, multistage, and high-pressurized anaerobic digestion can be given as examples of advanced modern biogas upgrading techniques . As an example of biogas production from food waste, a study focused on improving the anaerobic digestion process used in biogas production .…”

Section: Novel Approaches For the Valorization Of Agricultural Food W...mentioning

confidence: 99%

“…Biological methods, cryogenic separation, hydrate separation, membrane enrichment, in situ upgrading, multistage, and highpressurized anaerobic digestion can be given as examples of advanced modern biogas upgrading techniques. 39 As an example of biogas production from food waste, a study focused on improving the anaerobic digestion process used in biogas production. 40 They concluded that the practical usage of ultrasound during the pretreatment of food wastes and the anaerobic digestion increase the yield of biogas within a shorter time range.…”

Section: Novel Approaches For the Valorization Ofmentioning

confidence: 99%

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Novel Approaches in the Valorization of Agricultural Wastes and Their Applications

Capanoglu

Nemli

Tomás-Barberán

2022

J. Agric. Food Chem.

200

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Worldwide, a huge amount of agricultural food wastes and byproducts containing valuable bioactive compounds are generated, especially throughout the entire supply chain. Minimizing food wastes and byproducts is the first option to avoid environmental problems, and to help the economy and the society. Although many countries implement policies to reduce food wastes and byproducts, and different management methods are available to utilize agricultural food wastes, they are still produced annually. Nanotechnological and biotechnological approaches are recently used as novel and green applications to valorize agricultural food wastes and improve their stability and applicability. In this Review, these approaches are covered in detail with given examples. Another valorization way of consumable food waste is using it for functional food production. This Review focuses on specific examples of functional foods with food waste as an ingredient. In addition, the problems and limitations of waste management and valorization methods are investigated, considering future perspectives.

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Section: Novel Approaches For the Valorization Of Agricultural Food W...mentioning

confidence: 99%

Section: Novel Approaches For the Valorization Ofmentioning

confidence: 99%

Novel Approaches in the Valorization of Agricultural Wastes and Their Applications

Capanoglu

Nemli

Tomás-Barberán

2022

J. Agric. Food Chem.

200

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“…The Indonesian government recently passed legislation regulating minimum amounts of biogas output from new waste disposal plants under development. [15]…”

Section: Degradation Percentagementioning

confidence: 99%

The Production of Biogas From Food Waste

2023

IRJMETS

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Due to the rise in energy crises around the globe and the fear of the exhaustion of non-renewable resources, the world has started focusing on the use of sustainable energy production methods and technologies. One of such technologies is the biogas production method. The production of biogas from food waste is one of the most reliable and effective energy-producing techniques in today's world. Food waste, being organic, has the potential to generate the energy needed to fulfill daily needs. Biogas is produced when food waste is used as raw material and an aerobically converted with the pH value of the content inside the biodigester, which is measured and maintained at a neutral value, and a specific moisture level is also maintained. Anaerobic digestion is very sensitive to changes in pH, and it is important to maintain a pH of 6.7-7.4 for a healthy system. Biogas, formed by the anaerobic digestion of food wastes, makes sustainable, reliable, and renewable energy possible.The study concluded that anaerobic digestion of the food wastes enhanced biogas production, although not significantly, but surely in the future its significance will reach new heights. In this paper, a review of experimental work by different researchers for the generation of biogas from food waste has been outlined. This paper even opens a new avenue for the waste-to-energy method of disposing of food waste. These If treated properly, waste can be utilised for integrated solid waste management. This paper presents findings on the efficiency and significance of food waste utilisation for energy production as biogas.

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“…The excess biogas production through anaerobic digestion results in a dramatic increase in effluents, called digestates. This type of by-product is enriched with remarkable levels of nitrogen, phosphorous and organic substances depending on the composition of the substrates used [ 2 ]. After an analysis of 213 different liquid digestates, an average ammonium nitrogen concentration was determined close to 2 g L −1 , forming a C:N ratio of around 6.5, while phosphorus oxide levels were 0.39% w / w , based on digestate fresh weight [ 3 ].…”

Section: Introductionmentioning

confidence: 99%

Comparative Assessment of Nitrogen Concentration Effect on Microalgal Growth and Biochemical Characteristics of Two Chlorella Strains Cultivated in Digestate

et al. 2022

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Microalgae have been recently recognized as a promising alternative for the effective treatment of anaerobic digestion effluents. However, to date, a widely applied microalgae-based process is still absent, due to several constraints mainly attributed to high ammonia concentrations and turbidity, both hindering microalgal growth. Within this scope, the purpose of the present study was to investigate the performance of two Chlorella strains, SAG 211-11b and a local Algerian isolate, under different nitrogen levels, upon ammonia stripping. The experiments were performed on cylindrical photobioreactors under controlled pH (7.8 ± 0.2) and temperature (25 ± 2 °C). Cultures were monitored for biomass production and substrate consumption. After sampling at the beginning of the stationary phase of growth (12th day) and after the maturation of the cells (24th day), an analysis of the produced biomass was conducted, in terms of its biochemical components. The local isolate grew better than C. vulgaris 211-11b, resulting in 1.43 mg L−1 biomass compared to 1.02 mg L−1 under 25 mg NH4-N L−1, while organic carbon and nutrient consumption varied between the two strains and different conditions. Concerning biomass quality, a high initial NH4-N concentration led to high protein content, while low nitrogen levels favored fatty acid (FA) accumulation, though the production of pigments was inhibited. In particular, the protein content of the final biomass was determined close to 45% of the dry weight in all experimental scenarios with adequate nitrogen, while proteins decreased, and the fatty acids approached 20% in the case of the local isolate grown on the substrate with the lowest initial ammonium nitrogen (25 mg NH4-N L−1). The novelty of the present work lies in the comparison of a microalga with industrial applications against a local isolate of the same species, which may prove to be even more robust and profitable.

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Recent Advances of Biogas Production and Future Perspective

Cited by 28 publications

References 159 publications

Novel Approaches in the Valorization of Agricultural Wastes and Their Applications

Novel Approaches in the Valorization of Agricultural Wastes and Their Applications

The Production of Biogas From Food Waste

Comparative Assessment of Nitrogen Concentration Effect on Microalgal Growth and Biochemical Characteristics of Two Chlorella Strains Cultivated in Digestate

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