Energetic Valorization of Liquid and Solid Products from Hydrothermal Carbonization of Sewage Sludge - replication data

Poland's obligation to meet the EU's RES target has resulted in the growing interest in the biogas market. Simultaneously, the state's energy policy introduces solutions to support biogas plants. In addition, new developing technologies should also be applied to sufficiently increase the biogas production and to utilise the potential in generated biomass waste either from wastewater plant or agricultural production. That is why the detailed information of every aspect of the process including potential disposal of products and by-products from biogas plant and environmental impact has to be determined. Also, European energy policy is focussed on reduction of waste in the landfilling. Therefore, the thermal conversion of biogas plant waste is required thus hydrothermal carbonization (HTC) seems to be a promising method. This method is carried out in aqueous environment, that is why digestate is a suitable feedstock due to a high moisture content (c.a. 80%) and organic origin. The obtained products of HTC might be further process into biofuels, biofertilizers or absorbents. The researchers are interested in hydrothermal treatment of digestate from sewage sludge, mainly because it is proven to enhance its dewaterability, but the digestate derived from agriculture biogas plant is not so widely studied. Therefore, the scientific knowledge of the products properties and its formation is essential to fulfil this gap.