环境有氧预处理可提高厨余发酵液对高含量高氯酸盐的生物降解能力

IF 4.8 2区 材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY
Lijie Cheng, Ningbo Gao, Zhiqiang Ge, Cui Quan
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引用次数: 0

摘要

污染环境中高氯酸盐(ClO4-)的生物降解通常需要额外的电子供体和碳源。本研究探讨了利用环境有氧预处理技术结合餐厨垃圾厌氧发酵技术来制备餐厨垃圾发酵液(FBFW)并提高其对 ClO4- 的生物降解能力。结果表明,通过好氧预处理制备的 FBFW 在 ClO4- 生物降解方面表现优异。在电子供体与受体比为 1.2 的条件下,使用 FBFW 进行为期 6 天的好氧预处理,72 小时后 ClO4- 去除率达到 92.38%。这可归因于较高的乳酸比例和较低的铵浓度。此外,FBFW 在有氧预处理后作为电子供体和碳源,提高了属于固氮菌属和气单胞菌属的微生物类群的丰度,这些微生物类群因参与与 ClO4- 有关的电子传递和还原过程而闻名。这项研究强调了膳食废弃物好氧预处理与厌氧发酵相结合生产 FBFW 和提高 ClO4- 还原能力的潜力,为膳食废弃物的利用和高 ClO4- 污染的修复提供了新的视角。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Ambient aerobic pretreatment enhances food waste fermentation broth for high content perchlorate biodegradation

Ambient aerobic pretreatment enhances food waste fermentation broth for high content perchlorate biodegradation

The biodegradation of perchlorate (ClO4-) in contaminated environments often requires extra electron donors and carbon sources. This study investigates the use of ambient aerobic pretreatment technology combined with anaerobic fermentation of food waste to produce fermentation broth of food waste (FBFW) and enhance ClO4- biodegradation capacity. The results demonstrated that FBFW, prepared through aerobic pretreatment, exhibited excellent performance in ClO4- biodegradation. With an electron donor-to-acceptor ratio of 1.2, a remarkable ClO4- removal efficiency of 92.38% was achieved at 72 ​h when using FBFW after a 6-day aerobic pretreatment. This can be attributed to the higher proportion of lactic acid and lower ammonium concentration. Furthermore, FBFW, serving as an electron donor and carbon source after aerobic pretreatment, enhanced the abundance of microbial taxa belonging to Firmicutes and Aeromonas, known for their involvement in electron transfer and reduction processes related to ClO4-. This study highlighted the potential of aerobic pretreatment of food waste combined with anaerobic fermentation to produce FBFW and enhance ClO4- reduction, offering new perspectives for food waste utilization and the remediation of high ClO4- contamination.

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来源期刊
CiteScore
8.60
自引率
2.10%
发文量
2812
审稿时长
49 days
期刊介绍: Progress in Natural Science: Materials International provides scientists and engineers throughout the world with a central vehicle for the exchange and dissemination of basic theoretical studies and applied research of advanced materials. The emphasis is placed on original research, both analytical and experimental, which is of permanent interest to engineers and scientists, covering all aspects of new materials and technologies, such as, energy and environmental materials; advanced structural materials; advanced transportation materials, functional and electronic materials; nano-scale and amorphous materials; health and biological materials; materials modeling and simulation; materials characterization; and so on. The latest research achievements and innovative papers in basic theoretical studies and applied research of material science will be carefully selected and promptly reported. Thus, the aim of this Journal is to serve the global materials science and technology community with the latest research findings. As a service to readers, an international bibliography of recent publications in advanced materials is published bimonthly.
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