Microalgae biomass production from cultivation in availability and limitation of nutrients: The technical, environmental and economic performance

Medeiros, Diego Lima; Moreira, Ícaro Thiago Andrade

doi:10.1016/j.jclepro.2022.133538

Cited by 19 publications

(11 citation statements)

References 45 publications

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“…In contrast, the construction, decommissioning, and downstream stages, such as refining, delivery, use, and post-use, were disregarded. The foreground inventory of the Production stage was obtained from estimations, laboratory analysis, and field experiments in Medeiros and Moreira [10]. In contrast, Jones and colleagues obtained that of the Processing stage was obtained from estimations, laboratory analysis and field experiments [11] (Table 1).…”

Section: Methodsmentioning

confidence: 99%

Carbon Footprint of Hydrothermal Liquefaction of Microalgae Biomass Cultivated in Availability and Limitation of Nutrients

Cunha¹,

Medeiros²,

Moreira³

2023

JBTH

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This work aimed to assess the carbon footprint of microalgae biomass processing in hydrothermal liquefaction (HTL) to produce biopetroleum and co-products. The foreground inventory covered the cultivation in open ponds with availability (C1) and limitation (C2) of nutrients, followed by harvesting and processing in HTL for 1 kg of microalgae biomass in total solids. The ecoinvent™ 3.6 databases and IPCC- 2021 GWP 100 years method were used for background inventory and impact indicator in openLCA® 1.11.0. The carbon footprint of C1 (1.1 kg CO2eq) was more significant than that of C2 (0.7 kg CO2eq). The most considerable carbon footprint contribution per stage was the Production stage (cultivation and harvesting), with 64%-88%, in the evaluated scenarios. In comparison, this per process was the fertilizer (71%) in C1 and the heat (32%) in C2.

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Section: Methodsmentioning

confidence: 99%

Carbon Footprint of Hydrothermal Liquefaction of Microalgae Biomass Cultivated in Availability and Limitation of Nutrients

Cunha¹,

Medeiros²,

Moreira³

2023

JBTH

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“…In general, LCA could be used on a variety of operations. Several examples could be given from microalgal operations as plant cell cultures [13], biofuel production [14,15], and algal biomass and its composition [16]. Besides microalgae operations, which inherently promote green technologies, LCA is also applicable to other topics such as the energy efficiency of apartment buildings [17] or loess stabilization [18].…”

Section: Inroductionmentioning

confidence: 99%

Sustainable Point of View: Life Cycle Analysis for Green Extraction Technologies

Aslanbay Guler,

Tepe,

Imamoglu

2024

ChemBioEng Reviews

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Microalgae have emerged as a promising source of renewable energy and natural bioproducts since they show high biomass productivity, offer carbon dioxide fixation, and exhibit a rich content of compounds. Recent efforts have focused on green extraction technologies that utilize green solvents to further promote sustainability and minimize the environmental impact of the microalgal process. At this point, life cycle analysis (LCA) provides valuable insights into the environmental impacts of specific products and techniques. A comprehensive overview of the life cycle environmental and energy assessments conducted for the extraction of metabolites from microalgae is presented. Special attention is given to using green extraction technologies, i.e., supercritical fluid extraction, pressurized liquid extraction, microwave‐assisted extraction, ultrasound‐assisted extraction, and pulsed‐electric field extraction, and solvents to ensure sustainability. Additionally, the main principles, historical development, tools, and challenges of LCA are discussed. By addressing these aspects, the paper attracts attention to the environmental impacts associated with green extraction techniques for obtaining microalgal metabolites.

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“…The estimated costs range from €290 to €570 per kg dry weight, depending on the specific production method employed [ 127 ]. Medeiros and Moreira [ 128 ] and Maroušek et al [ 129 ] showed that the costliest aspects of microalgae are capital expenses for production units and operational cost production expenses related to liquid movement, lighting, temperature control, cleaning, and harvesting. Profitability for cultivation companies is typically achieved only at a very large scale.…”

Section: Challenges Of Large-scale Cultivationmentioning

confidence: 99%

Overview and Challenges of Large-Scale Cultivation of Photosynthetic Microalgae and Cyanobacteria

Novoveská¹,

Nielsen²,

Eroldoğan

et al. 2023

Marine Drugs

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Microalgae and cyanobacteria are diverse groups of organisms with great potential to benefit societies across the world. These organisms are currently used in food, feed, pharmaceutical and cosmetic industries. In addition, a variety of novel compounds are being isolated. Commercial production of photosynthetic microalgae and cyanobacteria requires cultivation on a large scale with high throughput. However, scaling up production from lab-based systems to large-scale systems is a complex and potentially costly endeavor. In this review, we summarise all aspects of large-scale cultivation, including aims of cultivation, species selection, types of cultivation (ponds, photobioreactors, and biofilms), water and nutrient sources, temperature, light and mixing, monitoring, contamination, harvesting strategies, and potential environmental risks. Importantly, we also present practical recommendations and discuss challenges of profitable large-scale systems associated with economical design, effective operation and maintenance, automation, and shortage of experienced phycologists.

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Microalgae biomass production from cultivation in availability and limitation of nutrients: The technical, environmental and economic performance

Cited by 19 publications

References 45 publications

Carbon Footprint of Hydrothermal Liquefaction of Microalgae Biomass Cultivated in Availability and Limitation of Nutrients

Carbon Footprint of Hydrothermal Liquefaction of Microalgae Biomass Cultivated in Availability and Limitation of Nutrients

Sustainable Point of View: Life Cycle Analysis for Green Extraction Technologies

Overview and Challenges of Large-Scale Cultivation of Photosynthetic Microalgae and Cyanobacteria

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