Department of Agricultural Technology, Storage and Transport, Faculty of Agriculture, University of Zagreb, Svetošimunska cesta 25, 10000 Zagreb, Croatia.
Department of Field Crops, Forage and Grassland, Faculty of Agriculture, University of Zagreb, Svetošimunska cesta 25, 10000 Zagreb, Croatia.
Molecules. 2021 Jul 20;26(14):4371. doi: 10.3390/molecules26144371.
The application of municipal sewage sludge as fertilizer in the production of non-food energy crops is an environmentally and economically sustainable approach to sewage sludge management. In addition, the application of municipal sewage sludge to energy crops such as is an alternative form of recycling nutrients and organic material from waste. Municipal sewage sludge is a potential source of heavy metals in the soil, some of which can be removed by growing energy crops that are also remediation agents. Therefore, the objective of the research was to investigate the effect of municipal sewage sludge applied at three different rates of 1.66, 3.22 and 6.44 t/ha on the production of Miscanthus. Based on the analyses conducted on the biomass of Miscanthus fertilized with sludge from the wastewater treatment plant in three fertilization treatments, it can be concluded that the biomass of Miscanthus is a good feedstock for the process of direct combustion. Moreover, the application of the largest amount of municipal sewage sludge during cultivation had no negative effect on the properties of Miscanthus biomass. Moreover, the cellulose and hemicellulose content of Miscanthus is ideal for the production of second-generation liquid biofuels. Fertilizer treatments had no effect on the content of cellulose and lignin, while a significant statistical difference was found for hemicellulose.
将城市污水污泥作为肥料应用于生产非食用能源作物是一种环境和经济可持续的污水污泥管理方法。此外，将城市污水污泥应用于能源作物，如芒草，是废物中营养物质和有机物质的一种替代回收形式。城市污水污泥是土壤中重金属的潜在来源，其中一些重金属可以通过种植同时也是修复剂的能源作物来去除。因此，本研究的目的是研究以 1.66、3.22 和 6.44 吨/公顷三种不同施用量施用城市污水污泥对芒草产量的影响。基于对在三种施肥处理下用来自污水处理厂的污泥施肥的芒草生物量进行的分析，可以得出结论，芒草的生物量是直接燃烧过程的良好原料。此外，在种植过程中应用最大量的城市污水污泥对芒草生物量的性质没有负面影响。此外，芒草的纤维素和半纤维素含量非常适合生产第二代液体生物燃料。肥料处理对纤维素和木质素含量没有影响，但对半纤维素含量有显著的统计学差异。
