CH₄ production potential of autotrophic nitrification bacteria produced in the submerged nitrification bioreactor in the laboratory and kinetic analysis.

IF 2.2 4区医学 Q3 ENVIRONMENTAL SCIENCES

International Journal of Environmental Health Research Pub Date : 2025-04-01 Epub Date: 2024-07-07 DOI:10.1080/09603123.2024.2374000

Sukru Aslan, Ali Alhraishawi, Mustafa Ozturk

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引用次数: 0

Abstract

In this study, CH₄ production capacity of nitrification bacteria (NB) obtained from the submerged biofilter in the laboratory was investigated. Biochemical methane potential (BMP) test was carried out with the NB amount of zero (control, CR), 5% (R1), 10% (R2), and 15% (R3) at a temperature of about 37 ± 0.5°C. Compared to the CR, significantly higher cumulative CH₄ volume of about 290, 490, and 715 mL were determined in the R1, R2, and R3, respectively. All the applied kinetic models gave good results (R² ≥0.97), while the Transference Function and First-order models provided the better R² values. The delay phase (λ) was not observed in the AD process, and CH₄ production started immediately on the first day of operation. The predicted k value of 0.133 day^-1 was high in CR, while it was approximately between 0.078 and 0.112 day^-1 for the higher amount of NB containing BMP units, which indicated that the AD required long reaction time.

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实验室浸没式硝化生物反应器中产生的自养型硝化细菌的 CH4 生产潜力和动力学分析。

本研究调查了实验室中从浸没式生物滤池中获得的硝化细菌（NB）的 CH4 产能。在温度约为 37 ± 0.5°C 的条件下，分别对零 NB 量（对照组，CR）、5% NB 量（R1）、10% NB 量（R2）和 15% NB 量（R3）进行了生化甲烷潜能（BMP）测试。与 CR 相比，R1、R2 和 R3 的累积 CH4 量明显较高，分别约为 290、490 和 715 mL。所有应用的动力学模型都给出了良好的结果（R2 ≥0.97），而转移函数和一阶模型提供了更好的 R2 值。在厌氧消化（AD）过程中没有观察到延迟阶段（λ），在运行的第一天就立即开始产生 CH4。CR 的预测 k 值为 0.133 day-1，较高，而含有较多 BMP 单元的 NB 的预测 k 值约为 0.078 至 0.112 day-1，这表明 AD 需要较长的反应时间。

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来源期刊

International Journal of Environmental Health Research 医学-公共卫生、环境卫生与职业卫生

CiteScore

6.70

自引率

3.10%

发文量

134

审稿时长

>12 weeks

期刊介绍： International Journal of Environmental Health Research ( IJEHR ) is devoted to the rapid publication of research in environmental health, acting as a link between the diverse research communities and practitioners in environmental health. Published articles encompass original research papers, technical notes and review articles. IJEHR publishes articles on all aspects of the interaction between the environment and human health. This interaction can broadly be divided into three areas: the natural environment and health – health implications and monitoring of air, water and soil pollutants and pollution and health improvements and air, water and soil quality standards; the built environment and health – occupational health and safety, exposure limits, monitoring and control of pollutants in the workplace, and standards of health; and communicable diseases – disease spread, control and prevention, food hygiene and control, and health aspects of rodents and insects. IJEHR is published in association with the International Federation of Environmental Health and includes news from the Federation of international meetings, courses and environmental health issues.