Biopolishing sanitary landfill leachate via cultivation of lipid-rich Scenedesmus microalgae

Souza, Leandro de Pádua; Lima, Amanda Schueng; Matos, Ângelo Paggi; Wheeler, Rodrigo Menezes; Bork, Jonathan Alexsander; Cubas, Anelise Leal Vieira; Moecke, Elisa Helena Siegel

doi:10.1016/j.jclepro.2021.127094

Cited by 16 publications

(10 citation statements)

References 75 publications

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“…The best result was attained with an 80% landfill leachate, producing 4.21 g/L. Compared to our study [27], we found that treatment with 100% landfill leachate did not yield excellent results, and the higher amounts were below 1.63 g/L. Scenedesmus sp.…”

Section: Biomass Growth Of S Acutus and H Pluvialis In Nejayote And F...contrasting

confidence: 87%

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Nejayote and Food Waste Leachate as a Medium for Scenedesmus acutus and Haematococcus pluvialis Production: A Mixture Experimental Design

Garza-Valverde,

García-Gómez,

Nápoles-Armenta

et al. 2024

Water

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The wastewaters of nejayote and food waste leachate are polluting effluents with a high load of organic matter that cause great problems when discharged to water receptors. In this work, we investigated the treatment of nejayote wastewaters and food waste leachate for the production of microalgae Scenedesmus acutus and Haematococcus pluvialis. For Scenedesmus acutus, treatment with 10% food waste leachate and 90% growth medium resulted in a concentration of 5.34 g/L in 20 days (μmax = 0.16/day). Meanwhile, 10% nejayote and 90% medium growth produced 4.45 g/L at 20 days (μmax = 0.13/d). A significant reduction of up to 82.6% ammonium, 84.1% orthophosphate, and 87.25% COD was also observed between the different treatments. For Haematococcus pluvialis, the treatment of 90% food waste leachate and 10% growth medium produced a concentration of 4.73 g/L at 6 days (μmax = 0.71/day), while the mixture of 25% najayote, 25% food waste leachate, and 50% growth medium produced a concentration of 5.5 g/L at 20 days (μmax = 0.25/dat). A reduction of up to 97.8% ammonia, 97.4% orthophosphate, and 73.19% COD was also recorded. These findings demonstrated the potential to cultivate microalgae and extract biomolecules for commercial purposes.

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Section: Biomass Growth Of S Acutus and H Pluvialis In Nejayote And F...contrasting

confidence: 87%

“…Scenedesmus sp. growth curves (µmax = 0.6) [27] most closely approach the T5 and T3 growth curves (µmax = 0.39, Table 3). The nejayote and food waste leachate concentrations each showed different growth rates of H. pluvialis (T1-T5).…”

Section: Biomass Growth Of S Acutus and H Pluvialis In Nejayote And F...mentioning

confidence: 61%

Nejayote and Food Waste Leachate as a Medium for Scenedesmus acutus and Haematococcus pluvialis Production: A Mixture Experimental Design

Garza-Valverde,

García-Gómez,

Nápoles-Armenta

et al. 2024

Water

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“…In microalgae biotechnology, production and extraction of intracellular compounds involve extensive processing steps that start with algal cultivation either in closed photobioreactor or open raceway ponds (Matos et al 2018;de Souza et al 2021), algal biomass recovery or harvesting through filtration, flocculation and/or centrifugation (Vandamme et al 2013), followed by further processing steps, including dewatering, drying, cell disruption, extraction and product purification (Sharma et al 2013;Feller et al 2018;Matos 2021).…”

Section: Introductionmentioning

confidence: 99%

Effect of non-thermal plasma process on biomass, lipid, fatty acid and lignocellulosic material of Scenedesmus microalga for biofuel production

Cubas

Moecke

Sousa

et al. 2023

Preprint

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This study assessed the effect of short-period (3 min.) application of non-thermal plasma (NTP) on the synthesis of biomass and lipids in Scenedesmus sp. as well as determine fatty acid content, elemental composition and lignocellulosic material. We also investigated the long-period (10 min.) exposure of microalgal biomass to NTP prior to lipid extraction. After subjecting the Scenedesmus biomass for short-period of plasma process, the maximum lipid productivity (20.6 mg L-1 day-1) was achieved on the fourth day of cultivation, with high percentages of saturated fatty acids notably palmitic acid (C16:0). Results of elemental composition (C, N, O, Na, Mg, Si, K, Ca) in Scenedesmus biomass showed that NTP application does not change these chemical compounds in algal biomass, while the lignocellulosic material such as cellulose content doubled (29.3%) of almost twice the value of the control sample (14.5%), which is associated with depolymerization of the D-glucose units mediated by NTP. After exposing the algal biomass for long-period of NTP as a pre-treatment method, the lipid recovery from Scenedesmus sp. ranged from 15.0 to 32.8% and decreased in the following order NTP (air + argon) ˃ sonication ˃ NTP (argon) ˃ NTP (air) ˃ control. These results suggest that NTP is a promising technology to not only induces lipid synthesis in microalgal cells but also to enhance the lipid recovery prior to lipid extraction, which can be converted into biodiesel. The lignocellulosic material in Scenedesmus biomass delignified by NTP can be also used to obtain second-generation bioethanol.

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“…3,4 Providing these nutrients in large quantities for microalgal commercial-scale cultivation can be costly, accounting for ca 15-20% of the cost. 5 To address this issue, researchers have explored alternative cultivation strategies for microalgae using various types of wastewaters, including anaerobic digestate abattoir effluent, 2,6 sanitary landfill leachate, 7 textile dye effluent, 8 olive mill waste 9 and aquaculture and aquaculture wastewaters. 10,11 These studies have been focused on evaluating the ability of microalgae to remove N and P efficiently, and in some cases, heavy metals from wastewater.…”

Section: Introductionmentioning

confidence: 99%

Influence of desalination concentrate medium on microalgal metabolism, biomass production and biochemical composition

Matos,

Saldanha‐Corrêa,

Hurtado

et al. 2023

J of Chemical Tech & Biotech

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Reverse osmosis is currently the most promising method for addressing freshwater scarcity in numerous nations, enabling the production of drinkable water for human consumption. This process, however, generates a byproduct stream, known as desalination concentrate (DC), that is enriched with high concentrations of salts such as Na+ and Cl−, moderate levels of SO42−, Mg2+, Ca2+ and K+ and trace levels of Si, Fe3+, NO3− and PO43−, which can be suitable and valuable for microalgal metabolism and growth. Salt concentration in DC can significantly influence microalgal growth via effects through osmotic shock, salt stress and cellular ionic ratios. Under certain conditions, these salinity changes can have a positive impact on microalgal metabolism, such as the synthesis of lipophilic compounds that include lipids, fatty acids and carotenoids. This mini‐review aims to provide up‐to‐date information of recent studies conducted towards the use of DC as a potential substrate for microalgal cultivation as well as to summarize the response mechanism of microalgae when cultured in DC. Several laboratory‐based studies have examined the effect of different DC concentrations on the biochemical composition of microalgae grown either in photobioreactors or in raceway ponds. These studies have uncovered significant effects of DC on the synthesis of proteins, amino acids and phycocyanin in freshwater species like Chlorella vulgaris and Arthrospira platensis, where DC tends to hinder these processes. Conversely, experiments with halophilic Dunaliella salina and marine Nannochloropsis gaditana have demonstrated that increasing DC concentration can positively influence the production of β‐carotene, lipids and specific saturated fatty acids (C16:0 and C18:0), suggesting that these species can adapt to a broader range of DC salinities. Cultivating salinity‐tolerant microalgae in DC would greatly reduce the production cost of algal‐based products, offering a promising approach to enhance the profitability of desalination and microalgal industries. © 2023 Society of Chemical Industry (SCI).

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Biopolishing sanitary landfill leachate via cultivation of lipid-rich Scenedesmus microalgae

Cited by 16 publications

References 75 publications

Nejayote and Food Waste Leachate as a Medium for Scenedesmus acutus and Haematococcus pluvialis Production: A Mixture Experimental Design

Nejayote and Food Waste Leachate as a Medium for Scenedesmus acutus and Haematococcus pluvialis Production: A Mixture Experimental Design

Effect of non-thermal plasma process on biomass, lipid, fatty acid and lignocellulosic material of Scenedesmus microalga for biofuel production

Influence of desalination concentrate medium on microalgal metabolism, biomass production and biochemical composition

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