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Technology
Reactors instead of lagoons. Data instead of guesswork.
The architecture of Aventra's plants was designed around one simple question — how do you produce more biomethane, more predictably, from the same vinasse?
Biodigestion
High-rate vertical reactors
Covered lagoons dominated the first generation of vinasse biogas projects. They are cheap to build but hard to control — temperature, mixing and retention time all drift, and output drifts with them. Aventra uses closed vertical reactors with proven technology.
More conversion per volume
Higher organic load treated per cubic metre of reactor and optimised biomass retention, delivering more biogas per litre of vinasse.
Controlled process
Temperature, pH, alkalinity and loading are measured and adjusted continuously. Less oscillation, fewer stoppages, more gas within specification.
Safety and environment
Closed system with no fugitive methane emissions, with HAZOP/LOPA studies and management of change built in from design.
Process chain
What happens inside the plant
01
Intake and conditioning
Vinasse and filter cake are equalised and conditioned to feed the reactors with a stable load, season after season.
02
Anaerobic biodigestion
Inside the reactors, microbial consortia convert organic matter into biogas (CH₄ + CO₂). Aventra's vinasse laboratory monitors and optimises the process biology.
03
H₂S removal
The biogas is desulphurised to protect equipment and meet the gas specification.
04
Upgrading (PSA)
CO₂ is separated by adsorption, raising the methane content to the grade required for grid injection or vehicle use.
→ Biomethane
05
Biogenic CO₂ capture
The CO₂ separated during upgrading is biogenic and can be liquefied and sold or routed to geological storage.
→ Biogenic CO₂
06
Digestate → biofertiliser
The treated effluent retains potassium and nutrients and returns to the fields with lower organic load and odour.
→ Biofertiliser
01
Intake and conditioning
Vinasse and filter cake are equalised and conditioned to feed the reactors with a stable load, season after season.
02
Anaerobic biodigestion
Inside the reactors, microbial consortia convert organic matter into biogas (CH₄ + CO₂). Aventra's vinasse laboratory monitors and optimises the process biology.
03
H₂S removal
The biogas is desulphurised to protect equipment and meet the gas specification.
04
Upgrading (PSA)
CO₂ is separated by adsorption, raising the methane content to the grade required for grid injection or vehicle use.
→ Biomethane
05
Biogenic CO₂ capture
The CO₂ separated during upgrading is biogenic and can be liquefied and sold or routed to geological storage.
→ Biogenic CO₂
06
Digestate → biofertiliser
The treated effluent retains potassium and nutrients and returns to the fields with lower organic load and odour.
→ Biofertiliser
Digitalisation
One control room, many plants
Every Aventra plant is connected to an operations centre that follows the process in real time, coordinates maintenance and consolidates reporting for the mill, gas offtakers and certification.
Real-time monitoring
Sensors and automation integrated into a central system. Deviations are caught before they become lost production.
Continuous optimisation
Data from every plant feeds models that fine-tune loading, temperature and operating regimes.
Shared teams
Process, maintenance and laboratory specialists serve several plants, at low marginal cost per additional plant.
Want to see how the technology applies to your mill?
Our engineers assess the vinasse profile, site layout and gas logistics to estimate the project's potential.