探索厌氧消化从中温到嗜热温度-操作和微生物方面

IF 3.3 3区农林科学 Q2 BIOTECHNOLOGY & APPLIED MICROBIOLOGY

Fermentation-Basel Pub Date : 2023-08-29 DOI:10.3390/fermentation9090798

B. Steiniger, S. Hupfauf, H. Insam, C. Schaum

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引用次数: 1

摘要

在中温和嗜热温度范围内的不同温度下运行的水资源回收设施（WRRF）中的蒸煮器是一种灵活的概念，有助于热量管理。四个25升的消化池加入了来自城市WRRF的污水污泥，分别在37、43、47和53°C下运行，以描述整体工艺性能和微生物群的变化。比甲烷产量和COD降解率在47°C时最高，与37°C时相比仅高出7%。pH值和NH4-N和PO4-P浓度在43°C以上的增加具有统计学意义。对微生物群落的影响是强烈的，这表明对嗜热生物的持续特化，以及从丙酮碎屑向氢营养/甲基营养产甲烷的变化。与微生物群的变化相比，温度对工艺工程和物理化学方面的影响相当小。

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Exploring Anaerobic Digestion from Mesophilic to Thermophilic Temperatures—Operational and Microbial Aspects

Digesters at water resource recovery facilities (WRRFs) operating at different temperatures within the mesophilic and thermophilic temperature range is a flexibilization concept to contribute to heat management. Four 25 L digesters were fed with sewage sludge from a municipal WRRF and were operated at 37, 43, 47 and 53 °C, respectively, to describe changes in the overall process performance and the microbiota. Specific methane yield and COD degradation rates were the highest at 47 °C, only being up to 7% higher compared with at 37 °C. The increase in pH and concentrations of NH4-N and PO4-P above 43 °C were statistically significant. The effect on the microbial community was strong, indicating both a constant specialization towards thermophilic organisms as well as a change from acetoclastic to hydrogenotrophic/methylotrophic methanogenesis. The influence of temperature on process-engineering and physicochemical aspects was rather small compared with the changes in the microbiota.

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来源期刊

Fermentation-Basel BIOTECHNOLOGY & APPLIED MICROBIOLOGY-

CiteScore

3.80

自引率

18.90%

发文量

594

审稿时长

7 weeks

期刊介绍： Fermentation-Basel is an international open access journal published by MDPI, focusing on fermentation-related research, including new and emerging products, processes and technologies, such as biopharmaceuticals and biotech drugs. The journal enjoys a good reputation in the academic community and provides a high-impact forum for researchers in the field of bioengineering and applied microbiology.