Emissions of CH 4 from natural gas infrastructure must urgently be addressed to mitigate its effect on global climate. With hundreds thousands miles pipeline in the US used transport gas, current methods surveying for leaks are inadequate. Mixed potential sensors a low cost, field deployable technology remote and continuous monitoring infrastructure. We demonstrate first time trial mixed sensor device coupled with machine learning internet-of-things platform at Colorado State University’s...

Mixed-potential electrochemical sensor arrays consisting of indium tin oxide (ITO), La 0.87 Sr 0.13 CrO 3 , Au, and Pt electrodes can detect the leaks from natural gas infrastructure. Algorithms are needed to correctly identify sources background anthropogenic such as wetlands or agriculture. We report for first time a comparison several machine learning methods mixture identification in context emissions monitoring by mixed potential arrays. Random Forest, Artificial Neural Network, Nearest...

Sensors capable of quantifying methane concentration and discriminating between possible sources are needed for natural gas leak detection where multiple spatially overlapping including wetlands agriculture may be present. We report on the fabrication by an additive manufacturing process a four electrode La 0.87 Sr 0.13 CrO 3 , Indium Tin Oxide (In 2 O 90 wt%, SnO 10 wt%), Au, Pt mixed potential electrochemical sensor using yttria-stabilized zirconia (YSZ) as solid electrolyte to detection....

Emissions are a significant contributor to climate change [1-2]. Low-cost sensor platforms needed understand the levels of emissions and types [3]. In addition, sensors help determine impact what soon-to-be prominent gases, like hydrogen, will have on environment [4]. Mixed potential electrochemical promising technology for foundation platform [5]. Our group has developed an AI-powered, IoT-driven capable measuring differentiating sources methane, carbon monoxide, ammonia oxides nitrogen...

Additive manufacturing allows for quick turn around and low cost of production small numbers parts. These attributes lend the technology to prototype development, where design changes are many [1]. Once parameters have been nailed down, additive manufacturing’s throughput poor reproducibility limit application high volume production. Here, we discuss implementation direct-write extrusion ceramic pastes metal inks mixed potential electrochemical sensors transition tape casting screen printing...

Transportation of hydrogen is one the greatest hurdles to overcome in development a clean economy [1]. A cost-effective solution transportation mix it with natural gas (NG) and utilize current pipeline infrastructure for [2]. However, embrittlement, higher diffusivity H 2 , uncertain state much existing makes leaks an environmental safety concern. Current NG leak detection technologies largely use optical sensors such as IR spectrometers that are incapable detecting [3]. Mixed potential...

Methane’s global warming potential is 28x higher than that of CO 2 on a 100 year basis.[1] The US has over 300,000 miles pipeline transporting natural gas, and recent estimates put the cost emissions in terms lost product societal impacts order billions dollars.[2] In gas industry, excess which cannot be economically used for production destroyed by burning flares. A aerial study found methane destruction efficiency was only 91%, result inefficient flaring instruments or unlit flares.[3]...

The US Environmental Protection Agency has estimated that emissions from natural gas and petroleum systems account for 32% of methane in the US.[1] Natural (NG) is transported along hundreds thousands miles pipeline US, any plan to perform continuous monitoring NG leak detection will require development low-cost, field-deployable systems. Mixed potential based on ceramic electrolytes metal or metal-oxide electrodes are expected be capable resolving CH 4 , C 2 H 6 other sub-components...

Additive manufacturing (AM) of ceramic materials offers a promising route to high temperature electrochemical devices at small prototyping scales where mass production techniques have excessively tooling setup cost and time.1 AM also enables the components with customizable geometries unavailable traditional techniques. Mixed Potential Electrochemical Sensors (MPES) are an attractive technology for environmental monitoring applications due their robustness, low cost, tunable selectivity.2...

Monitoring of methane leaks from natural gas (NG) sources during production and transport is vital to combating the threat greenhouse gases on global climate. An additive manufacturing route was developed for printing a CTE matched, low reactivity ionic conductivity magnesia stabilized zirconia (MSZ) substrate four-electrode (indium tin oxide, lanthanum strontium chromite, Au sensing electrodes measured against Pt negative electrode) same-side planar mixed potential electrochemical sensor...

According to the EPA, methane (CH 4 ) emissions from oil and gas infrastructure accounted for 211 million metric tons of CO 2 equivalent in 2020 [1]. Actual may exceed this by a factor three [2]. Current natural leak detection technologies largely consist optical sensors such as IR spectrometers [3]. Optical have high sensitivity, but cost fragility these limit practical applications continuous monitoring field. Mixed potential electrochemical (MPES) are low cost, robust, selective...

The US Environmental Protection Agency estimates emissions from natural gas drilling and processing amounted to 197 million metric tons of CO 2 equivalent in 2019. 1 Research by Marchese et al. suggests that CH 4 could be up three times higher. Current detection methods consist mainly active optical monitoring, typically with long path IR sensors. 3 These monitoring capable ppb level accuracy are expensive, fragile, require accurately calibrated mirrors. Mixed potential electrochemical...

Networking of sensors and the development sensor systems have become routine technological endeavors. The advent Internet-of-Things (IoT) technologies has enabled an expanding matrix applications for integration specialized systems. focus on innovation is now driving costs down, while increasing performance. Additive manufacturing techniques topological improvements are key drivers sensors. As transform their capabilities from (strictly) data generation gathering, shifts how to increase...

Methane emissions from natural gas pipeline infrastructure contribute to over 2 billion dollars in losses the US and 1.6 x 10 8 metric tons of CO -equivalent per year.[1-2] Widely deployable sensors are needed quickly identify repair leaks so that their environmental economic impact can be minimized. Mixed potential electrochemical (MPES) a low cost, highly robust system which deployed field. Mixture identification quantification using sensor signals produced by MPES devices is challenging...

Natural gas pipeline leaks are responsible methane emissions that amount to over 1.6 x 10 8 metric tons of CO 2 equivalent and more than billion dollars in losses.[1, 2] A widely deployable sensor capable remotely monitoring pipelines promptly detect these is needed curb their environmental economic impact. YSZ based mixed-potential electrochemical sensors (MPES) fit this need as they cheap durable, allowing for wide deployment the field. Prototyping enhanced by utilization additive...