Miritana Valentina Mazzurco, Patrolecco Luisa, Barra Caracciolo Anna, Visca Andrea, Piccinini Flavia, Signorini Antonella, Rosa Silvia, Grenni Paola, Garbini Gian Luigi, Spataro Francesca, Rauseo Jasmin, Massini Giulia
Department of Energy Technologies, Italian National Agency for New Technologies, Energy and Sustainable Economic Development (ENEA), Via Anguillarese 301, 00123 Rome, Italy.
Water Research Institute-National Research Council (IRSA-CNR), SP 35d, km 0.7, Montelibretti, 00010 Rome, Italy.
Antibiotics (Basel). 2022 Aug 17;11(8):1111. doi: 10.3390/antibiotics11081111.
Some livestock farms rely on anaerobic digestion (AD) technology for manure disposal, thus obtaining energy (biogas) and fertilizer (digestate). Mixtures of antibiotics used for animal health often occur in organic waste and their possible synergistic/antagonistic effects on microorganisms involved in AD are still poorly studied. This work focuses on the effects of adding ciprofloxacin, alone (5 mg L) and in combination with sulfamethoxazole (2.5-5-10 mg L), on AD efficiency and microbial community structure. The experiment consisted of 90-day cattle manure batch tests and antibiotic removal percentages were assessed. Adding antibiotics always promoted CH and H production compared to untreated controls; however, CH production was lowered with the highest ciprofloxacin (CIP) concentrations. The overall results show antibiotic degradation caused by acidogenic , and CH was mainly produced through the hydrogenotrophic-pathway by methanogenic . Shifts in microbial community abundance (DAPI counts) and composition (Illumina-MiSeq and FISH analyses) were observed.
一些畜牧场依靠厌氧消化（AD）技术处理粪便，从而获取能源（沼气）和肥料（沼渣）。用于动物健康的抗生素混合物经常出现在有机废物中，而它们对参与厌氧消化的微生物可能产生的协同/拮抗作用仍研究不足。这项工作聚焦于单独添加环丙沙星（5毫克/升）以及与磺胺甲恶唑联合添加（2.5 - 5 - 10毫克/升）对厌氧消化效率和微生物群落结构的影响。实验包括为期90天的牛粪批次试验，并评估了抗生素去除率。与未处理的对照相比，添加抗生素总是能促进甲烷和氢气的产生；然而，在环丙沙星（CIP）浓度最高时，甲烷产量降低。总体结果表明，产酸菌导致抗生素降解，而甲烷主要通过产甲烷菌的氢营养途径产生。观察到微生物群落丰度（DAPI计数）和组成（Illumina - MiSeq和FISH分析）的变化。
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