Energy and 𝑁𝐻3 recovery from fertilizer plant condensate by Giacomo Bandinu PDEng candidate

Nieuws - 26 februari 2021 - Secretariaat Sanitary Engineering

A CO2 condensate produced at the Yara Sluiskil plant, represents circa half of the total nitrogen-load currently discharged by the plant to the local wastewater treatment plant. For the disposal of this reject stream, the company pays an annual fee to the local municipality. On top of that, expected stricter environmental regulations are encouraging Yara to find solutions to reduce the plant’s nitrogen footprint.

Since 2016, TU Delft research team have been developing an innovative system able to remove and recover the ammonium from industrial waste streams. In 2018, this concept was successfully tested on the Yara Sluiskil condensate. Therefore, Yara chose to sponsor a PDEng project at TU Delft with the scope of assessing the potential and the feasibility of this innovative system for the disposal of the CO2 condensate and simultaneous recovery of valuable compounds contained in this stream. Ir. G.L. Bandinu was selected as PDEng trainee for this project which officially started on the 15th February 2019.

During the two years of the project, a full-scale design of the TU Delft solution was developed. The system was simulated in a laboratory set-up installed at the TU Delft Waterlab (see picture below). Besides, a cost and profitability analysis was performed to assess the financial implications and feasibility of the designed system. The project was successfully defended on the 22nd of February in a private defense due to the confidentiality of the project.