Soil Slurry Microfluidic Filtration for Faster Nutrient Analysis
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Solution Overview
Problem
Current agricultural sampling systems are inefficient in processing and analyzing soil, vegetation, and manure samples, as they require manual filtering and cleaning of filters, which is time-consuming and prone to contamination.
Innovation Solution
A comprehensive agricultural sampling system that includes a mixer-filter apparatus and a centrifuge, which automates the mixing and separation of soil samples, using a microfluidic processing disk with integrated micro-porous filters to produce a clear supernatant for chemical analysis, reducing the need for manual filtering and filter cleaning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If manual filtering and cleaning of filters is used in soil sampling, then the process can be performed with simple equipment, but the process becomes time-consuming and prone to contamination
Solution Approach 1:
The system uses self-contained disposable filters that are pre-packaged with extractant and sampling media. The filters automatically perform filtration and sample preparation without requiring manual cleaning or replacement, eliminating contamination risk and saving time.
Solution Approach 2:
The patent employs disposable filters that are discarded after a single use. Each filter contains integrated extractant and sampling media, eliminating the need for cleaning and preventing cross-contamination between samples. The low cost of disposable filters makes this approach economically viable.
2Productivity
If automated mixing and separation using microfluidic processing disk is implemented, then processing speed and accuracy improve, but device complexity increases
Solution Approach 1:
The system combines multiple functions (mixing, filtration, separation, and analysis) into a single integrated microfluidic processing disk. This consolidation automates the sample preparation process, improving speed and accuracy while managing complexity through functional integration rather than separate components.
Solution Approach 2:
The microfluidic processing disk serves multiple purposes: it mixes samples with extractant, filters the mixture through micro-porous filters, separates supernatant, and prepares samples for analysis. This multi-functionality increases productivity while containing device complexity within a single versatile platform.
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 system enables rapid and accurate analysis of plant-available nutrients in soil and other agricultural samples, improving efficiency and reducing contamination risks by automating the sample preparation and analysis process.
Implementation Method 1
a centrifuge, which automates the mixing and separation of soil samples
Implementation Method 2
using a microfluidic processing disk with integrated micro-porous filters to produce a clear supernatant
Data Source
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AI summary
An automated computer-controlled sampling system and related methods for collecting, processing, and analyzing agricultural samples for various chemical properties such as plant available nutrients. The sampling system allows multiple samples to be processed and analyzed for different analytes or chemical properties in a simultaneous concurrent or semi-concurrent manner. Advantageously, the system can process soil samples in the "as collected" condition without drying or grinding. The system generally includes a sample preparation sub-system which receives soil samples collected by a probe collection sub-system and produces a slurry (i.e. mixture of soil, vegetation, and/or manure and water), and a chemical analysis sub-system which processes the prepared slurry samples for quantifying multiple analytes and/or chemical properties of the sample. The sample preparation and chemical analysis sub-systems can be used to analyze soil, vegetation, and/or manure samples.