Residual biogas potential from the storage tanks of non-separated digestate and digested liquid fraction

New opportunities for agricultural digestate valorization: current situation and perspectives

“…In some AD plants, digestate is stored in uncovered tanks from which different gases (i.e. CH 4 , CO 2 , NH 3 and N 2 O) are lost to the atmosphere 17,18 . Greenhouse gases, such as N 2 O, CO 2 and CH 4 , affect the global environment and climate while NH 3 contributes to general atmospheric pollution.…”

Integrated Methane and Ethanol Production from Livestock Manure and Soybean Straw

“…Recently published reports have demonstrated the feasibility of such a process (Yue et al 2010;MacLellan et al 2013;Wang et al 2016a). There are drawbacks of using digestate as a fertilizer, which may pose an environmental pollution risk (Gioelli et al 2011;Sambusiti et al 2013;Zirkler et al 2014) and may have high shipping costs (Rehl and Müller 2011;Hoffpauir and Wurbs 2012). In addition, the net energy attained from co-production of methane and ethanol is higher than from the production of ethanol alone (Rabelo et al 2011;Teater et al 2011).…”

Comparison of various post-treatments for recovering methane from agricultural digestate

“…Digestate storage, mainly performed in uncovered tanks, could cause potential emission of biogas into the atmosphere, resulting in a loss of energetic efficiency and in an increased environmental impact of AD plants [8,3].…”