Technologies for improving microalgae biomass production coupled to effluent treatment: A life cycle approach

Magalhães, Iara Barbosa; Ferreira, Juliana Ceccato; Castro, Jackeline de Siqueira; Assis, Letícia Rodrigues de; Calijuri, Maria Lúcia

doi:10.1016/j.algal.2021.102346

Cited by 39 publications

(4 citation statements)

References 54 publications

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“…Combining microalgae cultivation with anaerobic digestion or other processes can enhance the overall efficiency of wastewater treatment and facilitate the recovery of valuable resources. Investigating the synergistic effects of different treatment methods can lead to more sustainable and integrated wastewater treatment approaches (Magalhães et al 2021 ). Additionally, conducting a comprehensive life cycle assessment (LCA) of microalgae-based wastewater treatment and biodiesel production is crucial for evaluating the environmental and economic sustainability of the process.…”

Section: Future Prospects Of This Studymentioning

confidence: 99%

Axenic green microalgae for the treatment of textile effluent and the production of biofuel: a promising sustainable approach

Pandey,

Kant,

Chaudhary

et al. 2024

World J Microbiol Biotechnol

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An integrated approach to nutrient recycling utilizing microalgae could provide feasible solutions for both environmental control and energy production. In this study, an axenic microalgae strain, Chlorella sorokiniana ASK25 was evaluated for its potential as a biofuel feedstock and textile wastewater (TWW) treatment. The microalgae isolate was grown on TWW supplemented with different proportions of standard BG-11 medium varying from 0 to 100% (v/v). The results showed that TWW supplemented with 20% (v/v) BG11 medium demonstrated promising results in terms of Chlorella sorokiniana ASK25 biomass (3.80 g L−1), lipid production (1.24 g L−1), nutrients (N/P, > 99%) and pollutant removal (chemical oxygen demand (COD), 99.05%). The COD level dropped by 90% after 4 days of cultivation, from 2,593.33 mg L−1 to 215 mg L−1; however, after day 6, the nitrogen (-NO3−1) and total phosphorus (TP) levels were reduced by more than 95%. The biomass-, total lipid- and carbohydrate- production, after 6 days of cultivation were 3.80 g L−1, 1.24 g L−1, and 1.09 g L−1, respectively, which were 2.15-, 2.95- and 3.30-fold higher than Chlorella sorokiniana ASK25 grown in standard BG-11 medium (control). In addition, as per the theoretical mass balances, 1 tonne biomass of Chlorella sorokiniana ASK25 might yield 294.5 kg of biodiesel and 135.7 kg of bioethanol. Palmitic acid, stearic acid, and oleic acid were the dominant fatty acids found in the Chlorella sorokiniana ASK25 lipid. This study illustrates the potential use of TWW as a microalgae feedstock with reduced nutrient supplementation (20% of TWW). Thus, it can be considered a promising feedstock for economical biofuel production. Graphical abstract

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Section: Future Prospects Of This Studymentioning

confidence: 99%

Axenic green microalgae for the treatment of textile effluent and the production of biofuel: a promising sustainable approach

Pandey,

Kant,

Chaudhary

et al. 2024

World J Microbiol Biotechnol

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“…Atualmente, a biotecnologia microalgal está ajudando a bioeconomia global, produzindo biomassa de alto valor para aplicações relacionadas ao ser humano, como alimentos, cosméticos e produtos farmacêuticos (Bhalamurugan et al, 2018;Magalhães et al, 2021). No âmbito da bioeconomia circular, as microalgas podem recuperar os nutrientes provenientes de águas residuárias da produção de animais de volta ao solo na produção agrícola, ser fonte de biocombustíveis, gerar mais renda para as instalações produtivas (Ferreira et al, 2018;Ferreira et al, 2021;Alvarez et al, 2021) e avançar a bioeconomia circular na indústria hídrica por meio da valorização de bioprodutos de microalgas (Arashiro et al, 2022).…”

Section: Bioeconomia De Microalgasunclassified

Engenharias: Desenvolvimento de processos e produtos

Holzmann¹

2023

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Editora Direitos para esta edição cedidos à Atena Editora pelos autores. Open access publication by Atena Editora Todo o conteúdo deste livro está licenciado sob uma Licença de Atribuição Creative Commons. Atribuição-Não-Comercial-NãoDerivativos 4.0 Internacional (CC BY-NC-ND 4.0). O conteúdo dos artigos e seus dados em sua forma, correção e confiabilidade são de responsabilidade exclusiva dos autores, inclusive não representam necessariamente a posição oficial da Atena Editora. Permitido o download da obra e o compartilhamento desde que sejam atribuídos créditos aos autores, mas sem a possibilidade de alterála de nenhuma forma ou utilizá-la para fins comerciais. Todos os manuscritos foram previamente submetidos à avaliação cega pelos pares, membros do Conselho Editorial desta Editora, tendo sido aprovados para a publicação com base em critérios de neutralidade e imparcialidade acadêmica.A Atena Editora é comprometida em garantir a integridade editorial em todas as etapas do processo de publicação, evitando plágio, dados ou resultados fraudulentos e impedindo que interesses financeiros comprometam os padrões éticos da publicação. Situações suspeitas de má conduta científica serão investigadas sob o mais alto padrão de rigor acadêmico e ético.

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“…如化石柴油(€1.0 kg −1 )、豆油和豆粕(€0.5 kg −1 ) [17] ，仍不具备竞争力。然而，该工艺路线的原位模式难以实施，因为微藻培养地点必须位于火力发电厂附近。火力发电厂需要大量的水才能运行，通常位于自然水体附近，周围通常是农业或林业用地 [25] 。这与开放培养系统对大面积非农业土地的需求相冲突。此外，全年温和稳定的气候是保证生物质生产满足长期连续运行降低成本的期望所必需的。虽然一些研究声称可以利用火电厂烟气余热来确保开放系统即使在寒冷的冬季也能运行 [26] ，但还需要更多的研究来证明其可行性。虽然为了固碳的目的将燃煤电厂烟气引入该工艺路线 [27] ，但许多研究表明该系统并没有达到预期的减排效果。在室外培养中，引入 6564 L 烟气和 538 L 的 CO2 后，微藻生物量仅增加 0.29 g [28] 。由在该系统中，微藻生长的碳源是碳酸氢盐而不是 CO2，因此 PBR 中的培养基将呈碱性，并且随着微藻吸收碳酸氢盐并将其转化为碳酸盐，培养基的碱度将逐渐增加。而且碳酸氢盐中的阳离子也会赋予介质一定的盐度。这些都对微藻物种的耐受性提出了要求 [29] 。根据多年的研究，发现多种微藻物种可以适应这种场景下产生的高盐和高 pH 环境，如小球藻 [30] 、链带藻 [31] 、杜氏盐藻 [32] 、螺旋藻等 [33] 。从海水或盐湖中分离的蓝藻和真核藻类在此技术路线上适应性较好，可优先考虑。Borovkov 等 [34]…”

Section: 微藻的碳源和培养系统unclassified

用于微藻利用的烟气co2供应方法：综述

俞小苏,

郭王彪,

胡毡

et al. 2023

Journal of Clean Energy Science and Technology

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利用烟气作为微藻培养碳源的潜力前景广阔。将烟气作为碳源纳入微藻培养过程中可以加速微藻的生长速度，从而提高集成过程的整体经济可行性。有两个主要烟气来源需要考虑：燃煤发电厂的烟气，其CO2浓度为12–15 w/w%，以及煤化工过程的烟气，其CO2浓度为90–99 w/w%。此外，开放式或密封式微藻培养系统的选择也会影响经济效益。因此，有四种不同的微藻培养路线需要评估：原位开放系统、离位开放系统、原位密封系统和离位密封系统。将烟气作为微藻培养中的碳源，显示出在减少环境影响和成本方面的巨大潜力，使其成为经济高效的微藻培养的一种非常有前途且可持续的方法。在本综述中，建议在烟气CO2浓度较高、目标产品为低利润商品的情况下采用原地开放式路线，而在烟气CO2浓度较低、目标产品为高附加值产品的情况下采用非原地密封式路线。

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Technologies for improving microalgae biomass production coupled to effluent treatment: A life cycle approach

Cited by 39 publications

References 54 publications

Axenic green microalgae for the treatment of textile effluent and the production of biofuel: a promising sustainable approach

Axenic green microalgae for the treatment of textile effluent and the production of biofuel: a promising sustainable approach

Engenharias: Desenvolvimento de processos e produtos

用于微藻利用的烟气co2供应方法：综述

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