抗生素对纤维素产生的甲烷的影响

IF 1.9 4区 工程技术 Q4 ENERGY & FUELS Journal of Renewable and Sustainable Energy Pub Date : 2023-11-01 DOI:10.1063/5.0175655
Qili Zhu, Toshinari Maeda, Chenghan Chen, Yanwei Wang, Furong Tan, Guoquan Hu, Mingxiong He
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引用次数: 0

摘要

提高纤维素的甲烷产量对于提高木质纤维素生物质的发酵效率至关重要。抗生素已证明能够通过影响微生物活性来刺激厌氧消化(AD)。然而,关于抗生素对纤维素厌氧消化的具体影响的研究还很有限。在本研究中,我们调查了三种抗生素--四环素(TC)、头孢菌素(CLX)和阿奇霉素(AZM)--在接种到废弃污水污泥中时对纤维素厌氧消化的影响。结果显示,在 20 天的厌氧消化期内,AZM 和 TC 的存在显著提高了甲烷产量,分别增加了 51.94% 和 34.96%。相比之下,CLX 的存在导致甲烷产量比对照组低 23.95%。此外,详细的分析表明,AZM 对纤维素 AD 的各个阶段都有积极影响,包括产甲烷、产酸/产乙酸和水解。另一方面,TC 主要促进甲烷生成阶段的 AD。这些发现共同为有效转化木质纤维素废物的能源潜力提供了宝贵的指导。
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Impact of antibiotics on methane produced from cellulose
Enhancing production of methane from cellulose is of utmost importance to improve the fermentation efficiency of lignocellulosic biomass. Antibiotics have demonstrated their ability to stimulate anaerobic digestion (AD) by influencing micro-organism activity. However, there has been limited research on the specific effect of antibiotics on cellulose AD. In this study, we investigated the impact of three antibiotics—tetracycline (TC), cephalexin (CLX), and azithromycin (AZM)—on cellulose AD when inoculated with waste sewage sludge. The results revealed that the presence of AZM and TC led to significantly higher methane yields, with increases of 51.94% and 34.96%, respectively, during a 20-day AD period. In contrast, the presence of CLX resulted in a 23.95% lower methane yield compared to the control. Furthermore, detailed analyses indicated that AZM had a positive influence on cellulose AD at all stages, including methanogenesis, acidogenesis/acetogenesis, and hydrolysis. On the other hand, TC primarily promoted AD during the methanogenesis stage. These findings collectively offer valuable guidance for efficiently transforming the energy potential of lignocellulosic wastes.
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来源期刊
Journal of Renewable and Sustainable Energy
Journal of Renewable and Sustainable Energy ENERGY & FUELS-ENERGY & FUELS
CiteScore
4.30
自引率
12.00%
发文量
122
审稿时长
4.2 months
期刊介绍: The Journal of Renewable and Sustainable Energy (JRSE) is an interdisciplinary, peer-reviewed journal covering all areas of renewable and sustainable energy relevant to the physical science and engineering communities. The interdisciplinary approach of the publication ensures that the editors draw from researchers worldwide in a diverse range of fields. Topics covered include: Renewable energy economics and policy Renewable energy resource assessment Solar energy: photovoltaics, solar thermal energy, solar energy for fuels Wind energy: wind farms, rotors and blades, on- and offshore wind conditions, aerodynamics, fluid dynamics Bioenergy: biofuels, biomass conversion, artificial photosynthesis Distributed energy generation: rooftop PV, distributed fuel cells, distributed wind, micro-hydrogen power generation Power distribution & systems modeling: power electronics and controls, smart grid Energy efficient buildings: smart windows, PV, wind, power management Energy conversion: flexoelectric, piezoelectric, thermoelectric, other technologies Energy storage: batteries, supercapacitors, hydrogen storage, other fuels Fuel cells: proton exchange membrane cells, solid oxide cells, hybrid fuel cells, other Marine and hydroelectric energy: dams, tides, waves, other Transportation: alternative vehicle technologies, plug-in technologies, other Geothermal energy
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