Cattle wastewater treatment using green microalga Coelastrella sp. KNUA068 as a promising bioenergy feedstock with enhanced biodiesel quality.

IF 2.5 4区环境科学与生态学 Q3 ENGINEERING, ENVIRONMENTAL Water Science and Technology Pub Date : 2024-02-01 DOI:10.2166/wst.2024.015

Ho-Seong Suh, Jeong-Mi Do, Hee-Tae Yeo, Ho-Sung Yoon

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Abstract

Global water scarcity increased the demand for clean water, leading to attention on microalgae-based biological treatment for wastewater due to economic feasibility and sustainable biomass applications. This study isolated indigenous microalga Coelastrella sp. KNUA068 from a wastewater treatment plant, observed its admissible growth rate in diluted cattle wastewater (DCW), and used it for wastewater treatment analysis. The microalga showed high growth rates in indoor and outdoor cultivation with 100% DCW. In addition, the ammonia nitrogen and nitrate nitrogen removal rates of the microalga were 69.97 and 60.35%, respectively, in indoor cultivation, and 50.63 and 67.20%, respectively, in outdoor cultivation. Carotenoid content analysis revealed lutein as the highest productivity carotenoid, and zeaxanthin production was higher in outdoor cultivation. The biomass exhibited suitable biodiesel quality with a cetane number of 50.8 for high-quality biodiesel production. Coelastrella sp. KNUA068 demonstrates potential for bioenergy feedstock, carotenoid production, and wastewater treatment.

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利用绿色微藻 Coelastrella sp. KNUA068 处理养牛废水，将其作为一种有前途的生物能源原料，提高生物柴油质量。

全球缺水加剧了对清洁水的需求，基于微藻的废水生物处理因其经济可行性和可持续生物质应用而备受关注。本研究从一家废水处理厂分离出本地微藻 Coelastrella sp. KNUA068，观察其在稀释牛废水（DCW）中的可接受生长率，并将其用于废水处理分析。在室内和室外 100%DCW培养条件下，该微藻均表现出较高的生长率。此外，微藻对氨氮和硝态氮的去除率分别为：室内 69.97% 和 60.35%，室外 50.63% 和 67.20%。类胡萝卜素含量分析表明，叶黄素是产量最高的类胡萝卜素，而玉米黄质的产量在室外栽培中较高。该生物质表现出合适的生物柴油质量，十六烷值为 50.8，可生产高质量的生物柴油。KNUA068 具有生物能源原料、类胡萝卜素生产和废水处理的潜力。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Water Science and Technology 环境科学-工程：环境

CiteScore

4.90

自引率

3.70%

发文量

366

审稿时长

4.4 months

期刊介绍： Water Science and Technology publishes peer-reviewed papers on all aspects of the science and technology of water and wastewater. Papers are selected by a rigorous peer review procedure with the aim of rapid and wide dissemination of research results, development and application of new techniques, and related managerial and policy issues. Scientists, engineers, consultants, managers and policy-makers will find this journal essential as a permanent record of progress of research activities and their practical applications.