In April 2023, the peat filter bed of the Monashell Biofilter was replaced. With the support of internal staff and the operational team of "F.lli Zappettini", the two modules of the Monashell Biofilter were emptied to then be filled with new peat filtering material. This operation has made the emissions treatment plant even more efficient, a statement supported by subsequent checks and analyses confirming the perfect functioning of the plant.