Thiosulfate Sensor with Rhodium Nanoparticles for Real-Time Flow Monitoring
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Solution Overview
Problem
Current methods for detecting residual thiosulfate in water treatment systems are not suitable for real-time monitoring in flowing environments, leading to inaccurate results due to the instability of thiosulfate and the limitations of traditional laboratory-based techniques.
Innovation Solution
A thiosulfate sensor is developed, comprising an electrode assembly with a sensing electrode coated with electrochemically deposited rhodium nanoparticles, a counter electrode, and a reference electrode, housed in an electrolyte chamber with a porous membrane to allow for real-time detection of thiosulfate in flowing fluids.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional laboratory-based techniques (spectroscopic, chromatographic, wet chemical methods) are used for thiosulfate detection, then measurement precision can be achieved, but real-time monitoring capability is lost due to lengthy analysis time and sample transport delays
Solution Approach 1:
The patent extracts the core detection function from complex laboratory instruments and implements it in a simplified electrochemical sensor. The sensor uses an electrode with rhodium nanoparticles that directly detect thiosulfate through electrochemical reactions, eliminating the need for complex spectroscopic or chromatographic equipment while maintaining detection accuracy and enabling real-time monitoring.
Solution Approach 2:
The patent replaces mechanical/chemical laboratory analysis systems with an electrochemical detection system. Instead of using spectroscopic instruments, chromatographs, or wet chemical methods that require sample preparation and lengthy analysis, the invention uses an electrochemical sensor that provides rapid, real-time thiosulfate concentration measurements through electrical signal detection.
2Measurement precision
If thiosulfate samples are transported to laboratories for analysis, then comprehensive testing can be performed, but measurement accuracy deteriorates due to thiosulfate instability during transport and storage
Solution Approach 1:
The patent introduces an intermediary electrochemical sensor that can be placed directly in the water distribution system. This sensor acts as a mediator between the thiosulfate in the flowing water and the measurement system, eliminating the need to transport samples. The sensor detects thiosulfate in situ, preventing decomposition that occurs during sample transport and storage.
Solution Approach 2:
The patent implements preliminary detection by placing the sensor directly in the water system before any sample degradation can occur. The sensor continuously monitors thiosulfate concentrations in real-time, performing the measurement action before the thiosulfate has a chance to decompose during transport or storage, thus preserving measurement accuracy.
3Productivity
If conventional sensors are used in flowing water systems, then real-time monitoring is attempted, but measurement reliability fails due to lack of detailed sensor configuration and flow environment compatibility
Solution Approach 1:
The patent designs a universal sensor configuration that can function reliably in flowing water environments. The sensor includes an electrode with rhodium nanoparticles, a flow cell with porous membrane for sample introduction, and integrated electronics. This multi-functional design allows the sensor to withstand flow conditions while maintaining detection reliability, addressing the inadequacies of conventional sensors in dynamic flow environments.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The sensor enables rapid, accurate, and precise real-time monitoring of thiosulfate concentrations in potable water, wastewater, and other applications, overcoming the limitations of traditional methods and ensuring effective dechlorination and process control.
Implementation Method 1
The sensor utilizes an electrode material, electrolyte solution and applied bias to enable a simple, convenient, rapid, accurate and precise measurement for real time monitoring for thiosulfate
Implementation Method 2
a sensing electrode including electrochemically deposited metal
Implementation Method 3
an electrolyte chamber porous membrane covering a second opening, where the porous membrane is configured to receive a flowing fluid therethrough
Data Source
AI summary
A thiosulfate sensor having an electrode assembly including a sensing electrode including electrochemically deposited metal, a counter electrode, and a reference electrode is described. The thiosulfate sensor further includes an electrolyte chamber including an electrolyte solution therein, the electrolyte chamber receiving the electrode assembly through a first opening to immerse the electrode in the electrolyte and an electrolyte chamber porous membrane covering a second opening, where the porous membrane is configured to receive a flowing fluid therethrough to allow the detection of thiosulfate in the flowing fluid.