Study analyzes hydrogen and nitrogen fertilizers as sustainable alternatives for Brazilian production
- REDAÇÃO H2RADAR
- May 15
- 2 min read
The continued increase in global demand for food, driven by population growth, makes nitrogen fertilizers essential for food security. In Brazil, where soils tend to be highly acidic, these inputs are even more critical for ensuring agricultural productivity. To meet this need and at the same time reduce carbon emissions, the study "Evaluation of hydrogen generation technologies aimed at the production of nitrogen fertilizers in the Brazilian scenario" investigates the technological options for the production of hydrogen, an essential input in the manufacture of these fertilizers.
Technologies for hydrogen production: challenges and opportunities
The study highlights two main technological routes for the production of hydrogen for the manufacture of nitrogen fertilizers: electrolysis and anaerobic digestion.
Water electrolysis is a highly efficient method with no direct carbon emissions, but it faces the challenge of high water demand, which may limit its large-scale application. To mitigate this barrier, the use of wastewater and groundwater, as well as vinasse – a liquid byproduct of ethanol production, composed mainly of water – appears to be a promising solution, expanding the opportunities for a circular economy in the agricultural sector.
Anaerobic digestion, a biological alternative, offers advantages such as lower environmental impact and greater sustainability. However, the process requires precise control of parameters to maximize hydrogen generation. Studies indicate that pH ranges between 4.5 and 5.5, organic loading rates of 80 to 90 gCOD/Ld and the use of co-substrates are critical factors for optimizing production. This biological approach, in addition to contributing to waste reduction, offers a significant opportunity to reduce dependence on fossil fuels in the production of nitrogen fertilizers.
By exploring these technologies, the study proposes a path to hydrogen production that combines energy efficiency and sustainability, reflecting the importance of innovation to meet the growing demands of the agricultural sector without compromising climate goals.
Check out the study HERE:
