Find out how seaweed is harvested

The process:

Area prospecting

Lithothamnium, a genus of seaweed rich in over 70 nutrients, thrives in deep-sea, nutrient-rich environments. To harvest it sustainably, locate suitable waters, consider natural or aquaculture collection methods, ensure economic viability, and assess environmental impacts to maintain ecosystem balance.

Collection and extraction method

The vessel planned for extraction is of the "TSHD - Trailing Suction Hopper" type.
Dredger", the material is removed from the seabed by dredging, stored in the hold and, once loaded, returned to the port for unloading. TSHDs are the main vessels used in Europe in the strategic segment of dredging marine aggregates (gravel and sand) for commercial use in the construction industry in countries such as England, France, the Netherlands, Germany, Norway and Denmark, among others.

Environmentally responsible dredging

New or modified dredging techniques attempt to minimize turbulence and turbidity to cause less disturbance to marine flora and fauna. An example of this is the “green valve” system developed for TSHDs that reduces turbidity caused by overflow during the dredging process.

Direct dry discharge and processing

The belt self-unloading system is the most economical, efficient and reliable for the type of material in the deposits and will minimize dust and noise during operation, in addition to reducing costs. The industrial beneficiation process consists of the unitary operations of drying, grinding and packaging, with the product being marketable in its natural state.

This entire process is carried out in partnership with ALGAREA MINERAÇÃO LTDA.

In 2025, it will extract and process over 700 thousand tons of Lithothamnium.

Algarea has collaborated and financed numerous technical and scientific research projects to increase knowledge and develop new applications.

As in Fertilizers:

Enhances NPK absorption
Boosts productivity across all crops
Improves defense against pests and diseases

In Human Health:

Cosmetics
Anti-inflammatory properties
Strengthens immunity

In Animal Nutrition:

Non-dairy source of calcium and other minerals
Rumen health (buffering) and adsorption
Bone Health Support

In Effluent Treatment:

Mineralizer
Decontamination and depollution
pH stabilizer