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Maurer & Müller (2012) found ammonia nitrogen (NH4-N) losses of 77 and 91% during the drying of two types of separtion solids of digestate. The loss of total N for the two types were 63 and 70%, respectively, which indicates that losses of organic bound N was low. Alm {...}
Mechanical Vapor Recompression (MVR) is an energy saving evaporative concentration technology, which reduces evaporation energy use by 90% or even more. MVR uses energy recovered from the condensate to create a pure liquid distillate and a concentrated product. The technology {...}
The price of nitrogen fertilisers has increased during 2021 due to increasing energy prices, and the Russian attack on Ukraine by end of February 2022 has only worsened the situation. The result is that nitrogen fertilisers in April 2022 is about three times more expensive tha {...}