Wastewater nutrients grow algae
Under suitable conditions, algae incorporate nitrogen and phosphorus from nutrient-bearing water into new biomass.
Evidence
Nature has already demonstrated the biology. Evidence is turning it into infrastructure.
Published science, historical Second Atmosphere work, national wastewater data, and a focused engineering program form the foundation for Aeroponic Algal Culture.
THE FOUNDATIONScience+Experience+Engineering
Established algal processes organized into a new biological-infrastructure platform.
Established scientific foundation
The central biological mechanisms are well documented.
Decades of published work support algae-based nutrient uptake, attached biofilm growth, and physical nutrient removal through harvest.
Algae can grow as a biofilm
Attached-growth systems demonstrate that algae can be cultivated on surfaces rather than only as a suspended culture.
Harvest removes captured nutrients
Removing and analyzing the biomass creates a measurable path for carrying nitrogen and phosphorus out of the water system.
Historical Second Atmosphere work
Nearly two decades of work shaped the infrastructure thesis.
The work that led to Second Atmosphere began at the Erie Wastewater Treatment Facility in 2007 and continued through hands-on development involving algae, water treatment, fabrication, and field equipment.
Solid surfaces supported algal growth
Early work demonstrated that algae could establish on exposed surfaces in a real wastewater-treatment setting.
The infrastructure was the obstacle
Growth alone was not enough. Surface density, water delivery, access, harvesting, durability, and operations had to function as one system.
Put water on the algae
AAC combines attached growth, exposed rigid surfaces, nutrient-bearing moisture, direct harvest access, and permanent facility design.
Calculated national opportunity
The nutrient resource is measurable at national scale.
Municipal final effluent and direct industrial discharges contain enough nitrogen and phosphorus to theoretically support approximately 10.5 billion pounds of dry algal biomass per year.
34B gal/dayMunicipal wastewater-flow input
10.5B lb/yearTheoretical nutrient-supported dry biomass
5.26M tonsEquivalent theoretical annual dry mass
The figure is a calculated physical ceiling based on disclosed nutrient inputs and a literature-derived reference composition. It describes resource scale rather than forecast production.
Review the inputs and primary sources →
The engineering program
Integrate the platform. Measure the system. Build the industry.
The next stage brings biology, treatment, materials, harvesting, controls, operations, and economics together at progressively larger scale.
Biofilm and treatment
Quantify growth, nutrient uptake, water-quality change, seasonal response, and harvested nutrient mass.
Surface and harvest
Refine attachment, hydraulic distribution, surface durability, harvest access, biomass recovery, and regrowth.
Operations and economics
Establish energy, labor, maintenance, uptime, construction cost, treatment value, and repeatable facility economics.
Environmental performance
Document water, energy, residuals, biomass handling, nutrient accounting, permitting, and watershed benefit.
Help build the next operating proof point.
Hosts, researchers, engineers, suppliers, and funders can help move AAC from an established foundation into full-scale biological infrastructure.