Optimisation of ultrasonication pretreatment on microalgae Chlorella Vulgaris &amp; Nannochloropsis Oculata for lipid extraction in biodiesel production

Krishnamoorthy, Amarnath; Rodríguez, Cristina; Durrant, Andrew

doi:10.1016/j.energy.2023.128026

Cited by 17 publications

(1 citation statement)

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“…For the study of microalgae-based biorefineries, three main stages must be considered, starting with the growth conditions of microalgae and biomass production, then progressing to the extraction of lipids and other compounds of interest, and finally, the processing methods of the extracted products into commercially viable products [16,17]. One of the current approaches to the use of microalgal lipids is for biodiesel production, which offers several advantages over petrodiesel, including a sulfur content of 0%, lower levels of CO 2 , CO, unburned hydrocarbons (HC), reduced particulate emissions, and a higher oxygen concentration, allowing for complete combustion [18]. However, it has been reported that it currently does not match the economic competitiveness of petrodiesel [19].…”

Section: Introductionmentioning

confidence: 99%

Evaluation of Technical and Economic Indicators for the Production Process of Microalgae Lipids Considering CO2 Capture of a Thermoelectric Plant and Use of Piggery Wastewater

Valdovinos-García,

Cabrera-Capetillo,

Bravo-Sánchez

et al. 2023

Energies

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Microalgae are highly studied microorganisms for the production of high-value products due to their high content of proteins, lipids, carbohydrates, and chlorophyll. These compounds are refined to obtain profitable industrial products. This article analyzes the lipid production of Chlorella sp. biomass, considering 18 scenarios for its production, with 9 of these being partially supplemented with swine wastewater. A 1 ha area was considered for biomass cultivation, primary and secondary biomass harvesting, and lipid extraction. Using simulation in the software SuperPro Designer v10, parameters such as CO2 capture (from a thermoelectric power plant), freshwater consumption, wastewater consumption, energy consumption, and unit production cost were evaluated. The results show that the production cost is high, ranging from 836.9 US $/kg to 1131.5 US $/kg of produced lipids, with a maximum CO2 capture of 454 kg of CO2/kg of lipids. The use of wastewater reduces the production cost by approximately 10%. The evaluation of technical and economic parameters allows us to identify bottlenecks and implement strategies to reduce production costs.

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