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Everest - Alkalinity Sensor for Enhanced Rock Weathering

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Everest Carbon introduces an advanced sensor technology designed to revolutionize the Enhanced Rock Weathering (ERW) process for carbon removal. ERW accelerates the natural weathering of rocks to capture atmospheric CO2 efficiently. The Everest Alkalinity Sensor is engineered to provide precise, scalable, and cost-effective measurement of carbonate alkalinity directly in the field. Utilizing a specialized ion exchange resin, the sensor digitizes in-situ alkalinity data for real-time transmission, removing the need for labor-intensive and costly manual sampling. This advancement significantly lowers project costs and measurement uncertainty associated with traditional methods. The sensor supports traceability by offering detailed documentation of carbon credit origin, fostering trust in carbon removal transactions. Furthermore, ERW not only aids in carbon sequestration but also promotes regenerative agriculture by enhancing soil health and productivity, reinforcing its potential to foster climate resilience and global food security.

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Effortless and Accurate Alkalinity Measurement

Win Buyer Trust

 

Trust and transparency are essential for carbon removal credit buyers. Open-system carbon removal pathways like ERW have historically struggled to meet rightfully high expectations. Point-in-time measurements provided by sellers provide a low barrier to protect the industry from bad actors.

Our patent-pending, always-on sensor with IoT functionality allows project developers to meticulously demonstrate where and when removals were generated. This enables tracing each issued credit to its location and time of origin, resulting in levels of trust and transparency currently unavailable for open-system carbon removal.

Lower Uncertainty

Alkalinity measurement is typically done using porewater sampling devices to manually extract water samples from the field and ship them to a lab for chemical analysis. The determined alkalinity concentration is then multiplied by an estimated amount of water flowing through the soil to arrive at an expected alkalinity figure for a given time.

Instead, our patent-pending sensor directly measures the cumulative amount of alkalinity export in the field using a specialized ion exchange resin and digitizes this robust chemical signal for real-time transmission to the cloud. This eliminates the need for temporal extrapolation and water table estimation, resulting in far lower measurement uncertainty and more credits that can be issued.

Reduce Cost

 

Sample taking and ex-situ analysis currently accounts for up to 50% of project costs. Eliminating the need for alkalinity sampling, which requires frequent trips to each sampling location and expensive lab analysis, can therefore significantly lower overall project costs.

Our sensors do this by autonomously measuring alkalinity in-situ and uploading the data to the cloud. Project developers therefore no longer require trained operators at each deployment location. Installing our sensors also only takes 15 minutes for a single person, resulting in the first truly scalable alkalinity measurement solution.

Natural rock weathering has regulated the Earth’s temperature throughout geological history and maintained the habitability of our planet. Enhanced Rock Weathering (ERW) accelerates this natural carbon removal mechanism by strategically deploying finely ground rocks in conditions that accelerate weathering.