Recycled fertilizers from biomass

Recycled fertilizers from biomass - Weeefiner develops a method to recover nitrate, phosphate and potassium

In the photo, Luke's researcher Jani Pulkkinen and Weeefiner's CEO Mikko Hänninen at the recirculating aquaculture system (RAS) in Laukaa

With Weeefiner's 4D Scavenger® technology, dissolved raw materials can be separated from complex liquid solutions. Up until now, we have mainly focused on the recovery of metals, but in the future we will focus more and more on the recovery of nutrients as well, as the need for recycled nutrients will grow.

The project focusing on the recovery of nutrients has received funding from the "Ravinteiden kierrätyksen kokeiluohjelma 2020–2022" from center for Economic Development, Trasport and the Environment in Southern Ostrobothnia. The goal is to develop a method that can be used to recover nutrients which would otherwise end up as waste. The aim is to use the recovered nutrients to produce raw materials for recycled fertilizers.

The tests carried out with Weeefiner's 4D Scavenger® technology have given very promising results on the functionality of nutrient recovery.

"Dissolved nutrients that have previously caused challenges can be selectively recovered with the help of 4D Scavenger®," explains Weeefiner's chief of technology Elmeri Lahtinen.

The project will be piloted at Luke's premises

During the one-and-a-half-year project, the focus is mainly on the recovery of the nutrients formed in the recirculating aquaculture system (RAS). During the project, we will also look at other sites where the recovery of dissolved nutrients has potential. Natural Resources Institute Finland (Luke) will be involved in the implementation of the project and the developed method will be piloted at Luke's RAS facilities.

"Recirculating aquaculture system is an activity that requires an environmental permit. Hence, the management of nutrient emissions is an essential part of the farming operation. Typically, the phosphorus in the fish sludge is bound with chemicals and the nitrogen is evaporated into the air, making them no longer useful. Nutrient recovery makes it possible to make recycled nutrients from the side streams of fish farming," says Luke's researcher Jani Pulkkinen.

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Taxonomy

• Fertilizers
• Reuse
• Fertilizer
• Nutrient Recovery & Reuse
• Wastewater Reuse Project Finance

2 Comments

1. En

   Before a product can be recycled, it must first be restored to its original state. This is far from being the case with bio mass. In fact, if it is an organic matter that has lost all its biological characteristics, a neutral, inert body. The process of its recycling as it is currently practiced generates a very strong degradation of the organic which is denatured and in which only chemical components remain in high concentrations, a poison for the soil.
   The biomass produced by this process is neither more nor less than a substitution of action to make it disappear because we do not know how to make it otherwise. We use the ground as a dustbin of finality.
   Only fresh organic matter can bring real fertilization to the soil.

    

   Fr

   Avant de pouvoir recycler un produit il faut avant toute chose le remettre à son état d'origine.      C'est loin d'être le cas de la bio masse. En faite sil s'agit d'une matière organique qui a perdu toutes ses caractéristiques biologiques, un corps neutre, inerte. Le processus de son recyclage tel qu'il est pratiqué actuellement génère une très forte dégradation de l'organique qui est dénaturée et dans laquelle ne subsistent que des composants chimiques à fortes concentrations, un poison pour le sol.

   La biomasse produit par ce processus n'est ni plus ni moins qu'une substitution d'action pour la faire disparaitre car on ne sait pas comment la faire autrement. On se sert du sol comme une poubelle de finalité.

   Seule une matière organique fraiche peut apporter au sol une réelle fertilisation. 

2. Pour recycler un produit il est nécessaire av