Sustainable kitchen wastewater treatment with electricity generation using upflow biofilter-microbial fuel cell system

IF 3.1 4区生物学 Q2 BIOTECHNOLOGY & APPLIED MICROBIOLOGY

Biodegradation Pub Date : 2024-06-22 DOI:10.1007/s10532-024-10087-0

Ahmed Y. Radeef, Aya A. Najim, Haneen A. Karaghool, Zaid H. Jabbar

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Abstract

The microbial fuel cell (MFC) is considered a modern technology used for treating wastewater and recovering electrical energy. In this study, a new dual technology combining MFC and a specialized biofilter was used. The anodic materials in the system were crushed graphite, either without coating (UFB-MFC) or coated with nanomaterials (nano-UFB-MFC). This biofilter served as a barrier to retain and remove turbidity and suspended solids, while also facilitating the role of bacteria in the removal of organic pollutants, phosphates, nitrates, sulfates, oil and greases. The results demonstrated that both systems exhibited high efficiency in treating kitchen wastewater, specifically greywater and dishwashing wastewater with high detergent concentrations. The removal efficiencies of COD, oil and grease, suspended solids, turbidity, nitrates, sulfates, and phosphates in first UFB-MFC were found to be 88, 95, 89, 86, 87, 75, and 94%, respectively, and in Nano-UFB-MFC were 86, 99, 95, 91, 81, 88, and 95%, respectively, with a high efficiency in recovering bioenergy reaching a value of 1.8 and 1.5 A m⁻³, respectively. The results of this study demonstrate the potential for developing MFC and utilizing it as a domestic system to mitigate pollution risks before discharging wastewater into the sewer network.

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利用上流式生物滤池-微生物燃料电池系统发电，实现可持续的厨房废水处理。

微生物燃料电池（MFC）被认为是一种用于处理废水和回收电能的现代技术。在这项研究中，采用了一种结合 MFC 和专用生物滤池的新型双重技术。系统中的阳极材料是碎石墨，既可以没有涂层（UFB-MFC），也可以有纳米材料涂层（纳米 UFB-MFC）。这种生物滤池起到了阻挡和去除浊度和悬浮固体的作用，同时也促进了细菌在去除有机污染物、磷酸盐、硝酸盐、硫酸盐、油和油脂方面的作用。结果表明，这两种系统都能高效处理厨房废水，特别是含高浓度洗涤剂的中水和洗碗废水。第一 UFB-MFC 对 COD、油脂、悬浮固体、浊度、硝酸盐、硫酸盐和磷酸盐的去除率分别为 88%、95%、89%、86%、87%、75% 和 94%，而 Nano-UFB-MFC 对 COD、油脂、悬浮固体、浊度、硝酸盐、硫酸盐和磷酸盐的去除率分别为 86%、99%、95%、91%、81%、88% 和 95%，生物能回收效率分别达到 1.8 A m-3 和 1.5 A m-3。这项研究的结果证明了开发 MFC 并将其用作家用系统的潜力，以便在将废水排入下水道网络之前降低污染风险。

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

Biodegradation 工程技术-生物工程与应用微生物

CiteScore

5.60

自引率

0.00%

发文量

审稿时长

6 months

期刊介绍： Biodegradation publishes papers, reviews and mini-reviews on the biotransformation, mineralization, detoxification, recycling, amelioration or treatment of chemicals or waste materials by naturally-occurring microbial strains, microbial associations, or recombinant organisms. Coverage spans a range of topics, including Biochemistry of biodegradative pathways; Genetics of biodegradative organisms and development of recombinant biodegrading organisms; Molecular biology-based studies of biodegradative microbial communities; Enhancement of naturally-occurring biodegradative properties and activities. Also featured are novel applications of biodegradation and biotransformation technology, to soil, water, sewage, heavy metals and radionuclides, organohalogens, high-COD wastes, straight-, branched-chain and aromatic hydrocarbons; Coverage extends to design and scale-up of laboratory processes and bioreactor systems. Also offered are papers on economic and legal aspects of biological treatment of waste.