Durable and Immersible Network Enabled Ammonia Sensor for Water Monitoring

Stanford Reference:

19-331

Abstract

Stanford researchers have designed an ammonia sensor for water monitoring that is low cost, durable, immersible, and integrated into a cloud network. Capable of detecting down to 0.01 ppm, these sensors can be deployed in rivers, wastewater and possibly ocean waters for real-time, remote monitoring. By using chemically resistant platforms and a low power draw design, these sensors protect against fouling, which allows for longer immersion times and minimal field maintenance.

This technology is part of a portfolio of related inventions (S19-331, S20-348, S20-349, S23-336) that extracts value from wastewater by reclaiming ammonia from nitrate-contaminated wastewater streams.

Stage of Development - Prototype

Applications

Water quality monitoring via IoT: ammonia detection
Harmful algae bloom prediction

Advantages

Low power consumption
Low cost, off-the-shelf components
Anti-fouling, fully immersible system
Remote operation without the need for human intervention or interpretation

Publications

Tarpeh, W. A., Senesky, D. G., Lalwani, A. V., Holliday, M., Mu, L., Clark, B. D., Liu, M.J., Dong, H., & Guo, J. (2022). U.S. Patent Application No. 17/642,902.
Roberts, T. (2024). William Tarpeh taps the potential of polluted water. Stanford News. https://news.stanford.edu/stories/2024/10/william-tarpeh-creativity-leads-innovative-wastewater-transformations
Guo, J., Liu, M. J., Laguna, C., Miller, D. M., Williams, K. S., Clark, B. D., B.D., Muñoz, C., Blair, S.J., Nielander, A.C., Jaramillo, T.F., & Tarpeh, W. A. (2024). Electrodialysis and nitrate reduction (EDNR) to enable distributed ammonia manufacturing from wastewaters. Energy & Environmental Science, 17(22), 8787-8800. DOI: 10.1039/D4EE03002H
Tarpeh, W. A., Liu, M. J., & Clark, B. D. (2023). U.S. Patent Application No. 18/041,769.
Tarpeh, W. A., Kogler, A., Clark, B. D., Liu, M. J., & Chow, W. (2024). U.S. Patent Application No. 18/041,678.
Miller, D. M., Liu, M. J., Abels, K., Kogler, A., Williams, K. S., & Tarpeh, W. A. (2024). Engineering a molecular electrocatalytic system for energy-efficient ammonia production from wastewater nitrate. Energy & Environmental Science, 17(15), 5691-5705. DOI: 10.1039/D4EE01727G

Innovators & Portfolio

Brandon Clark
Maximillian Holliday more technologies from Maximillian Holliday »
Anand Lalwani more technologies from Anand Lalwani »
Matthew Junjie Liu
Linchao Mu
Debbie Senesky more technologies from Debbie Senesky »
William Tarpeh

Patent Status

Published Application: 20220365059

Date Released

8/19/2020 12:00

Licensing Contact

Chris Tagge, Technology Licensing Program Manager
(650) 725-8402
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Related Keywords

ammonia water PS: environmental: water treatment remote monitoring water analysis water PS: Environmental: Recycled Water PS: Environmental: Waste Treatment PS: Infrastructure: Drinking Water PS: Infrastructure: Water Utilities PS: Internet of Things (IoT): Devices PS: Sensors: remote monitoring PS: Electronics: Electronics Water Treatment

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