Full utilization of marine microalgal hydrothermal liquefaction liquid products through a closed-loop route: towards enhanced bio-oil production and zero-waste approach

Al-Mutairi, Adel

doi:10.1007/s13205-022-03262-8

Cited by 12 publications

(2 citation statements)

References 57 publications

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“…In lab experiments, microalgae showed high potential to treat different wastewater streams, such as municipal wastewater [146][147][148], distillery wastewater [149], brewery wastewater [150], pharmaceutical-rich wastewater [151], and dairy effluents [152]. In addition, microalgae have the potential to play a significant role in seawater desalination coupled with biofuel production [153][154][155]. From an economic perspective, microalgae have been reported as potential candidates to contribute to the bioeconomy through biofuel generation coupled with eco-friendly clean-up of different wastewaters and the application of biomass/byproducts as biofertilizers, nutrients, biopesticides, and bioplastics [156].…”

Section: Microalgae-mnp Interactionmentioning

confidence: 99%

Recent Advances in Micro-/Nanoplastic (MNPs) Removal by Microalgae and Possible Integrated Routes of Energy Recovery

Abomohra

Hanelt

2022

Microorganisms

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Reliance on plastic has resulted in the widespread occurrence of micro-/nanoplastics (MNPs) in aquatic ecosystems, threatening the food web and whole ecosystem functions. There is a tight interaction between MNPs and microalgae, as dominant living organisms and fundamental constituents at the base of the aquatic food web. Therefore, it is crucial to better understand the mechanisms underlying the interactions between plastic particles and microalgae, as well as the role of microalgae in removing MNPs from aquatic ecosystems. In addition, finding a suitable route for further utilization of MNP-contaminated algal biomass is of great importance. The present review article provides an interdisciplinary approach to elucidate microalgae–MNP interactions and subsequent impacts on microalgal physiology. The degradation of plastic in the environment and differences between micro- and nanoplastics are discussed. The possible toxic effects of MNPs on microalgal growth, photosynthetic activity, and morphology, due to physical or chemical interactions, are evaluated. In addition, the potential role of MNPs in microalgae cultivation and/or harvesting, together with further safe routes for biomass utilization in biofuel production, are suggested. Overall, the current article represents a state-of-the-art overview of MNP generation and the consequences of their accumulation in the environment, providing new insights into microalgae integrated routes of plastic removal and bioenergy production.

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Section: Microalgae-mnp Interactionmentioning

confidence: 99%

Recent Advances in Micro-/Nanoplastic (MNPs) Removal by Microalgae and Possible Integrated Routes of Energy Recovery

Abomohra

Hanelt

2022

Microorganisms

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“…However, issues still need to be resolved, such as the high costs of the complicated methods required to convert lignocelluloses into fermentable sugars and the ineffective microbial technology for fully fermenting these sugars into ethanol [4,5]. Alternatively, algae (including macroalgae and microalgae) have been extensively investigated as highly promising candidates for third-generation biofuels, boasting numerous advantages over their first-and secondgeneration counterparts [6][7][8]. However, their inherent limitations in natural productivity and efficiency have prompted researchers to explore metabolic engineering, aiming to position engineered algae as fourth-generation biofuels.…”

Section: Introductionmentioning

confidence: 99%

Exploring the Prospects of Fermenting/Co-Fermenting Marine Biomass for Enhanced Bioethanol Production

Osman,

Abo-Shady,

Elshobary

et al. 2023

Fermentation

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With the rising demands for renewable fuels, there is growing interest in utilizing abundant and sustainable non-edible biomass as a feedstock for bioethanol production. Macroalgal biomass contains a high content of carbohydrates in the form of special polysaccharides like alginate, agar, and carrageenan that can be converted to fermentable sugars. In addition, using seagrass as a feedstock for bioethanol production can provide a sustainable and renewable energy source while addressing environmental concerns. It is a resource-rich plant that offers several advantages for bioethanol production, including its high cellulose content, rapid growth rates, and abundance in coastal regions. To reduce sugar content and support efficient microbial fermentation, co-fermentation of macroalgae with seagrass (marine biomass) can provide complementary sugars and nutrients to improve process yields and economics. This review comprehensively covers the current status and future potential of fermenting macroalgal biomass and seagrass, as well as possible combinations for maximizing bioethanol production from non-edible energy crops. An overview is provided on the biochemical composition of macroalgae and seagrass, pretreatment methods, hydrolysis, and fermentation processes. Key technical challenges and strategies to achieve balanced co-substrate fermentation are discussed. The feasibility of consolidated bioprocessing to directly convert mixed feedstocks to ethanol is also evaluated. Based on current research, macroalgae-seagrass co-fermentation shows good potential to improve the bioethanol yields, lower the cost, and enable more optimal utilization of diverse marine biomass resources compared to individual substrates.

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Catalyst in Action

Esakkimuthu,

Wang,

Abomohra

2023

Value-Added Products From Algae

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Full utilization of marine microalgal hydrothermal liquefaction liquid products through a closed-loop route: towards enhanced bio-oil production and zero-waste approach

Cited by 12 publications

References 57 publications

Recent Advances in Micro-/Nanoplastic (MNPs) Removal by Microalgae and Possible Integrated Routes of Energy Recovery

Recent Advances in Micro-/Nanoplastic (MNPs) Removal by Microalgae and Possible Integrated Routes of Energy Recovery

Exploring the Prospects of Fermenting/Co-Fermenting Marine Biomass for Enhanced Bioethanol Production

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