Utilization and integration of microalgae consortium in treating undiluted anaerobic digestate animal effluent to produce animal feed, bio-oil, and biogas

IF 9.7 1区环境科学与生态学 Q1 AGRICULTURAL ENGINEERING Bioresource Technology Pub Date : 2024-11-08 DOI:10.1016/j.biortech.2024.131788

Nugroho Adi Sasongko , Jeremy Ayre , Ryozo Noguchi , Navid R. Moheimani , Parisa A. Bahri , Martin Anda , Mitsutoshi Nakajima , Ernie S.A. Soekotjo , Gian Aditya Pertiwi , Tri Handayani , Soen Steven

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Abstract

Anaerobic digestate animal effluent (ADAE) contains high N and P nutrients which need to be treated. In this study, an integrated process was proposed using a microalgae consortium of Chlorella and Scenedesmus. The system was designed for 71 m³/d (medium-sized) and 355 m³/d (large-sized) animals of ADAE. Process simulation estimated to produce 83–417 kg d^-1 of microalgae biomass which can be used as further products. As much as 2 kg of animal feed and 36–180 L/d of bio-oil can be produced during the treatment of 1 m³/d of ADAE. The produced biogas can generate 247–1,217 MWh y^-1 of electricity. Likewise, the process can reduce greenhouse gas emissions by 2 kg-CO₂eq kg⁻¹ of hot standard carcass weight (HSCW). This integrated system offers merits in treating ADAE as well as producing chemicals and energy with low environmental burdens.

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利用微藻联合体处理未稀释的厌氧消化动物污水并将其与之结合，以生产动物饲料、生物油和沼气。

厌氧消化动物污水（ADAE）含有大量的氮和磷营养物质，需要加以处理。在这项研究中，提出了一种使用小球藻和鳞片藻组成的微藻联合体的综合工艺。该系统设计用于处理 71 立方米/天（中型）和 355 立方米/天（大型）的 ADAE 动物。工艺模拟估计每天可生产 83-417 公斤微藻生物质，可用作进一步的产品。处理 1 立方米/天的 ADAE 可产生多达 2 公斤的动物饲料和 36-180 升/天的生物油。产生的沼气每年可发电 247-1,217 兆瓦时。同样，该工艺还可减少 2 kg-CO2eq kg-1 热标准胴体重量（HSCW）的温室气体排放。这种综合系统在处理 ADAE 以及生产化学品和能源方面都具有优势，而且对环境造成的负担较小。

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来源期刊

Bioresource Technology 工程技术-能源与燃料

CiteScore

20.80

自引率

19.30%

发文量

2013

审稿时长

12 days

期刊介绍： Bioresource Technology publishes original articles, review articles, case studies, and short communications covering the fundamentals, applications, and management of bioresource technology. The journal seeks to advance and disseminate knowledge across various areas related to biomass, biological waste treatment, bioenergy, biotransformations, bioresource systems analysis, and associated conversion or production technologies. Topics include: • Biofuels: liquid and gaseous biofuels production, modeling and economics • Bioprocesses and bioproducts: biocatalysis and fermentations • Biomass and feedstocks utilization: bioconversion of agro-industrial residues • Environmental protection: biological waste treatment • Thermochemical conversion of biomass: combustion, pyrolysis, gasification, catalysis.