Institute of Environmental Sciences and Engineering (IESE), School of Civil and Environmental Engineering (SCEE), National University of Sciences and Technology (NUST), Islamabad 44000, Pakistan.
Institute of Environmental Sciences and Engineering (IESE), School of Civil and Environmental Engineering (SCEE), National University of Sciences and Technology (NUST), Islamabad 44000, Pakistan.
Bioresour Technol. 2022 Apr;349:126894. doi: 10.1016/j.biortech.2022.126894. Epub 2022 Feb 23.
Cattle manure is rich in organic matter and nutrients, but it may also contain harmful substances such as residual antibiotics and other toxic compounds. Oxytetracycline (OTC) is a widely used veterinary antibiotic and its presence in manure can affect the subsequent anaerobic digestion process. This study evaluated the effect of OTC concentrations viz. 0.12, 0.3, 0.6, 1.2, 3, 6 and 12 mg L on batch mesophilic anaerobic digestion of cattle manure. The results showed that cumulative biogas yield decreased by 25, 29 and 55% at 3, 6 and 12 mg OTC L in contrast to control. Volatile solids removal was 39% for control which reduced to 13% in 12 mg L OTC spiked reactor. Effect on stability parameters was significant at OTC concentrations from 1.2 to 12 mg L. Two different kinetic models were used for biogas data validation and the modified Gompertz model best fitted to the experimental data.
牛粪富含有机物和养分，但也可能含有有害的物质，如残留的抗生素和其他有毒化合物。土霉素（OTC）是一种广泛使用的兽医抗生素，其在粪便中的存在会影响后续的厌氧消化过程。本研究评估了土霉素浓度为 0.12、0.3、0.6、1.2、3、6 和 12 mg/L 对批量常温厌氧消化牛粪的影响。结果表明，与对照相比，在 3、6 和 12 mg OTC/L 时，累积沼气产量分别下降了 25%、29%和 55%。挥发性固体去除率为对照的 39%，在 12 mg OTC/L 冲击的反应器中减少到 13%。在 1.2 至 12 mg/L 的 OTC 浓度下，对稳定性参数的影响显著。使用两种不同的动力学模型对沼气数据进行验证，改进的 Gompertz 模型最适合实验数据。
