Study on consolidated bioprocessing of pre-treated Nannochloropsis gaditana biomass into ethanol under optimal strategy

Kavitha, S.; Gajendran, T.; Saranya, K.; Selvakumar, Ponniah; Manivasagan, V.

doi:10.1016/j.renene.2021.03.015

Cited by 29 publications

(3 citation statements)

References 32 publications

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“…Hydrolysis, acidogenesis, acetogenesis, and methanogenesis are the four phases that make up the complex process known as anaerobic digestion (AD), as depicted in Exhibit 3 (Induchoodan et al., 2022). Although hydrolysis is frequently viewed as a rate‐limiting phase, it transforms both insoluble organic compounds and polymeric compounds, including proteins, polysaccharides, and lipids, into monomeric compounds (Kavitha et al., 2021). The second stage involves splitting the components created by hydrolysis during acidogenesis, in which acidogenic bacteria create volatile fatty acid, CO 2 , H 2 sulfide, NH 3 , and other byproducts (Harirchi et al., 2022; Kavitha et al., 2022).…”

Section: Bio‐chemical Convection Of Sewage Sludgementioning

confidence: 99%

A comprehensive review on sewage sludge as sustainable feedstock for bioenergy production

Gizaw,

Periyasamy,

Redda

et al. 2023

Environmental Quality Mgmt

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The greatly rising amounts of sewage sludge from different sources are causing severe concerns around the globe. Disposal of sewage sludge is exceptionally difficult and poses serious environmental problems due to the significant quantity of toxic heavy metals and organic contaminants in its constituents. This review provides an overview of different conversion methods of sewage sludge into energy, that is, pyrolysis, hydrothermal gasification, hydrothermal liquefaction, hydrothermal carbonization, anaerobic digestion, and transesterification. It also focuses on each conversion route's state‐of‐the‐art research advances, features, and drawbacks to ensure financial and ecological responsibility. The detailed descriptions of the methods and respective energy generation could help scholars and industrialists produce energy from sewage sludge to keep the environment harmless.

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Section: Bio‐chemical Convection Of Sewage Sludgementioning

confidence: 99%

A comprehensive review on sewage sludge as sustainable feedstock for bioenergy production

Gizaw,

Periyasamy,

Redda

et al. 2023

Environmental Quality Mgmt

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“…In this study, the hemicellulose removal of dilute H 2 SO 4 treatment was found to be best for the pretreatment of biomass at the concentration of 2.5% under 100 • C for 60 min, effectively disrupting a complex matrix of the holocellulose sample and removing the hemicellulose. The optimized conditions of the medium components and process parameters yielded a maximum ethanol concentration of 12.90 g/L [191]. The investigation on the potential of the fungus Trichoderma asperellum to produce ethanol and the physicochemical parameters required for paddy straw waste conversion via CBP using the numerical optimization was statistically validated by comparing the volume of ethanol produced, to the volume analyzed via Response Surface Methodology (RSM).…”

Section: Ethanol Synthesis Based On Fermentationmentioning

confidence: 99%

Recent Advances in the Technologies and Catalytic Processes of Ethanol Production

et al. 2023

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On the basis of its properties, ethanol has been identified as the most used biofuel because of its remarkable contribution in reducing emissions of carbon dioxide which are the source of greenhouse gas and prompt climate change or global warming worldwide. The use of ethanol as a new source of biofuel reduces the dependence on conventional gasoline, thus showing a decreasing pattern of production every year. This article contains an updated overview of recent developments in the new technologies and operations in ethanol production, such as the hydration of ethylene, biomass residue, lignocellulosic materials, fermentation, electrochemical reduction, dimethyl ether, reverse water gas shift, and catalytic hydrogenation reaction. An improvement in the catalytic hydrogenation of CO2 into ethanol needs extensive research to address the properties that need modification, such as physical, catalytic, and chemical upgrading. Overall, this assessment provides basic suggestions for improving ethanol synthesis as a source of renewable energy in the future.

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“…The species that are used in aquaculture are selected following criteria such as the absence of toxic compounds, their nutritional values, and good digestibility for the species to be fed. In this context, Nannochloropsis gaditana, by virtue of its richness in eicosapentanoic acid (EPA, C20:5n-3), pigments, and other natural antioxidants and bioactive compounds [21][22][23], together with its availability at the industrial or semiindustrial scale [24,25], is a promising candidate as a commercial additive in Aquafeed [20]. So far, numerous studies have reported positive effects of microalgae-enriched diets on fish growth [26][27][28][29][30][31][32].…”

Section: Introductionmentioning

confidence: 99%

Long-Term Effects of a Short Juvenile Feeding Period with Diets Enriched with the Microalgae Nannochloropsis gaditana on the Subsequent Body and Muscle Growth of Gilthead Seabream, Sparus aurata L.

Ayala

Balsalobre

Chaves-Pozo

et al. 2023

Animals

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Currently, microalgae are used in fish diets, but their long-term growth effect is unknown. In this experiment, juvenile seabream specimens were fed with microalgae-enriched diets for three months, and then transferred to a microalgae-free diet for 10 months to assess long-term effects up to commercial size (≈ 27 cm and ≈ 300 g). The juvenile diets contained Nannochloropsis gaditana at 2.5 or 5% inclusion levels, either raw (R2.5 and R5 groups) or cellulose-hydrolyzed (H2.5 and H5 groups). The body length and weight were measured in 75 fish group-1 at commercial stage. The size, number, and fibrillar density of white muscle fibers and the white muscle transverse area were measured in nine fish group-1 at commercial stage. The results showed the highest body weight in H5 at commercial stage. The white muscle transverse area and the white fibres hyperplasia and density also showed the highest values in H5, followed by H2.5. In contrast, the highest hypertrophy was observed in C and R2.5, being associated with the lowest muscle growth in both groups. These results showed a microalgae concentration-dependent effect in hydrolyzed diets as well as an advantageous effect of the hydrolyzed versus raw diets on the long-term growth of Sparus aurata.

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Study on consolidated bioprocessing of pre-treated Nannochloropsis gaditana biomass into ethanol under optimal strategy

Cited by 29 publications

References 32 publications

A comprehensive review on sewage sludge as sustainable feedstock for bioenergy production

A comprehensive review on sewage sludge as sustainable feedstock for bioenergy production

Recent Advances in the Technologies and Catalytic Processes of Ethanol Production

Long-Term Effects of a Short Juvenile Feeding Period with Diets Enriched with the Microalgae Nannochloropsis gaditana on the Subsequent Body and Muscle Growth of Gilthead Seabream, Sparus aurata L.

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