Indigenous Green Microalgae for Wastewater Treatment: Nutrient Removal and Resource Recovery for Biofuels and Bioproducts

IF 3 3区工程技术 Q3 ENERGY & FUELS BioEnergy Research Pub Date : 2023-05-19 DOI:10.1007/s12155-023-10611-9

Ikumi Umetani, Michał Sposób, Olga Tiron

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Abstract

Microalgae biotechnology can strengthen circular economy concepts in the wastewater treatment sector. This study investigated the Norwegian microalgae strains of Tetradesmus wisconsinensis, Lobochlamys segnis, and Klebsormidium flaccidum for their efficiency in nutrient removal. Their biomass productivity and compositions were evaluated for bioenergy and bi-products development. In the laboratory batch experiment with synthetic municipal wastewater, all strains accomplished total removal of nitrogen and phosphorus. L. segnis removed all NH₄⁺ and PO₄³⁻ (initial concentration of 28 and 15 mg/L, respectively) earliest among others. T. wisconsinensis biomass was superior in total carbohydrates content (40%) and fatty acid profile that imply biorefinery potential. The fatty acid (TFA) content was the highest in L. segnis (193 ± 12 mg/g dry cells), while K. flaccidum accumulated fatty acids that consisted largely of polyunsaturated fatty acids (82% of TFA). The highest protein level was measured in K. flaccidum (53%). Observed variations in biomass components can be used for a strategic production of targeted compound in resource recovery scenarios for biofuel generation.

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用于废水处理的本土绿色微藻：生物燃料和生物制品的养分去除和资源回收

微藻生物技术可以加强废水处理领域的循环经济理念。本研究考察了挪威微藻菌株Tetradesmus wisconsin， Lobochlamys segnis和Klebsormidium flacacum去除营养物质的效率。评估了它们的生物量生产力和组成，以开发生物能源和副产品。在合成城市污水的实验室批量试验中，所有菌株都完成了氮、磷的全部去除。L. segnis对NH4+和PO43−（初始浓度分别为28 mg/L和15 mg/L）的去除率最高。在总碳水化合物含量（40%）和脂肪酸分布方面，威斯康星柽柳生物量具有优势，这意味着生物精炼潜力。其中，龙舌兰的脂肪酸（TFA）含量最高（193±12 mg/g），而黄花龙舌兰的脂肪酸以多不饱和脂肪酸为主（占总脂肪酸的82%）。蛋白含量最高的是黄花金（53%）。观察到的生物质成分的变化可用于在生物燃料生产的资源回收方案中战略性地生产目标化合物。

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来源期刊

BioEnergy Research ENERGY & FUELS-ENVIRONMENTAL SCIENCES

CiteScore

6.70

自引率

8.30%

发文量

174

审稿时长

3 months

期刊介绍： BioEnergy Research fills a void in the rapidly growing area of feedstock biology research related to biomass, biofuels, and bioenergy. The journal publishes a wide range of articles, including peer-reviewed scientific research, reviews, perspectives and commentary, industry news, and government policy updates. Its coverage brings together a uniquely broad combination of disciplines with a common focus on feedstock biology and science, related to biomass, biofeedstock, and bioenergy production.