Life Cycle Analysis and Full Carbon Accounting of Enhanced Rock Weathering

Enhanced rock weathering offers a promising pathway for scalable carbon dioxide removal while simultaneously improving soil health and agricultural productivity. This study presents a Life Cycle Assessment of Eion Corp’s CarbonLock™ a carbon-negative alternative to agricultural lime (aglime) for soil amendment. Using one tonne Calcite Carbonate Equivalents (tCCE) as the functional unit, the analysis compares CarbonLock™ to aglime across extraction, transport, processing, application, and sequestration stages. Results demonstrate CarbonLock™ has significant carbon removal potential, achieving a net Carbon Dioxide Removal of -952 kgCO2/tCCE in a commercial supply chain scenario, sequestering over ten times more CO2 than it emits. Sensitivity analyses confirm resilience to increased transport distances, maintaining strong carbon negativity (-867 kgCO2/tCCE). By contrast, aglime is often a net carbon emitter, even with minimal transport. These findings highlight CarbonLock™ as a scalable and resilient Carbon Capture, Utilization, and Storage solution capable of replacing aglime and removing millions of tons of CO2 from the atmosphere annually.