Application of Electrical Resistivity Measurements for Continuous Monitoring of the Municipal Solid Waste Biodrying Process
Waste-to-energy technology has proven effective in reducing the mass and volume of waste, thereby minimizing contamination sources and residual fractions. However, high moisture content in waste significantly reduces the efficiency of energy recovery. Biodrying has shown great potential for moisture...
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MDPI AG
2025-02-01
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| author | Bongkoch Chungam Hiroyuki Ishimori Soydoa Vinitnantharat Sirintornthep Towprayoon Chart Chiemchaisri Komsilp Wangyao |
| author_facet | Bongkoch Chungam Hiroyuki Ishimori Soydoa Vinitnantharat Sirintornthep Towprayoon Chart Chiemchaisri Komsilp Wangyao |
| author_sort | Bongkoch Chungam |
| collection | DOAJ |
| description | Waste-to-energy technology has proven effective in reducing the mass and volume of waste, thereby minimizing contamination sources and residual fractions. However, high moisture content in waste significantly reduces the efficiency of energy recovery. Biodrying has shown great potential for moisture reduction through microbial activity, enhancing the efficiency of waste-to-energy processes. While the lack of proper real-time monitoring methods hinders the optimization of the biodrying processes. This study proposes an efficient method for monitoring the biodrying of municipal solid waste based on real-time electrical resistivity monitoring. During biodrying, resistivity was measured alongside key parameters like temperature, weight, gas emissions from the biodrying process, relative air humidity, moisture, and waste density. The results indicate a good correlation between bulk electrical resistivity (441–614 Ω·m) and temperature increases above ambient within the first 36 h (<i>r</i><sup>2</sup> = 0.97–0.99). Statistical analyses also revealed the correlations of electrical resistivity with waste density (negative correlation, <i>r</i><sup>2</sup> = 0.68–0.97) and gas emissions (moderate to strong, <i>r</i><sup>2</sup> = 0.45–0.72) during different biodrying phases. These findings demonstrate the relationship between electrical resistivity and key biodrying parameters, which can be used for the development of biodrying and to enhance process control efficiency, thus enhancing sustainable waste management efficiency. |
| format | Article |
| id | doaj-art-53423d62f8a94d5fa1eb7b2b23bd2112 |
| institution | DOAJ |
| issn | 2313-4321 |
| language | English |
| publishDate | 2025-02-01 |
| publisher | MDPI AG |
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| series | Recycling |
| spelling | doaj-art-53423d62f8a94d5fa1eb7b2b23bd21122025-08-20T03:13:59ZengMDPI AGRecycling2313-43212025-02-011023210.3390/recycling10020032Application of Electrical Resistivity Measurements for Continuous Monitoring of the Municipal Solid Waste Biodrying ProcessBongkoch Chungam0Hiroyuki Ishimori1Soydoa Vinitnantharat2Sirintornthep Towprayoon3Chart Chiemchaisri4Komsilp Wangyao5The Joint Graduate School of Energy and Environment (JGSEE), King Mongkut’s University of Technology Thonburi, Bangkok 10140, ThailandResearch Center for Material Cycles and Waste Management, National Institute for Environmental Studies (NIES), 16-2 Onogawa, Tsukuba 305-8506, JapanSchool of Energy, Environment and Materials, King Mongkut’s University of Technology Thonburi, Bangkok 10140, ThailandThe Joint Graduate School of Energy and Environment (JGSEE), King Mongkut’s University of Technology Thonburi, Bangkok 10140, ThailandDepartment of Environmental Engineering, Faculty of Engineering, Kasetsart University, Bangkok 10900, ThailandThe Joint Graduate School of Energy and Environment (JGSEE), King Mongkut’s University of Technology Thonburi, Bangkok 10140, ThailandWaste-to-energy technology has proven effective in reducing the mass and volume of waste, thereby minimizing contamination sources and residual fractions. However, high moisture content in waste significantly reduces the efficiency of energy recovery. Biodrying has shown great potential for moisture reduction through microbial activity, enhancing the efficiency of waste-to-energy processes. While the lack of proper real-time monitoring methods hinders the optimization of the biodrying processes. This study proposes an efficient method for monitoring the biodrying of municipal solid waste based on real-time electrical resistivity monitoring. During biodrying, resistivity was measured alongside key parameters like temperature, weight, gas emissions from the biodrying process, relative air humidity, moisture, and waste density. The results indicate a good correlation between bulk electrical resistivity (441–614 Ω·m) and temperature increases above ambient within the first 36 h (<i>r</i><sup>2</sup> = 0.97–0.99). Statistical analyses also revealed the correlations of electrical resistivity with waste density (negative correlation, <i>r</i><sup>2</sup> = 0.68–0.97) and gas emissions (moderate to strong, <i>r</i><sup>2</sup> = 0.45–0.72) during different biodrying phases. These findings demonstrate the relationship between electrical resistivity and key biodrying parameters, which can be used for the development of biodrying and to enhance process control efficiency, thus enhancing sustainable waste management efficiency.https://www.mdpi.com/2313-4321/10/2/32real-time monitoringsolid waste biodryingnon-invasive waste analysisprocess optimizationelectrical resistivity |
| spellingShingle | Bongkoch Chungam Hiroyuki Ishimori Soydoa Vinitnantharat Sirintornthep Towprayoon Chart Chiemchaisri Komsilp Wangyao Application of Electrical Resistivity Measurements for Continuous Monitoring of the Municipal Solid Waste Biodrying Process Recycling real-time monitoring solid waste biodrying non-invasive waste analysis process optimization electrical resistivity |
| title | Application of Electrical Resistivity Measurements for Continuous Monitoring of the Municipal Solid Waste Biodrying Process |
| title_full | Application of Electrical Resistivity Measurements for Continuous Monitoring of the Municipal Solid Waste Biodrying Process |
| title_fullStr | Application of Electrical Resistivity Measurements for Continuous Monitoring of the Municipal Solid Waste Biodrying Process |
| title_full_unstemmed | Application of Electrical Resistivity Measurements for Continuous Monitoring of the Municipal Solid Waste Biodrying Process |
| title_short | Application of Electrical Resistivity Measurements for Continuous Monitoring of the Municipal Solid Waste Biodrying Process |
| title_sort | application of electrical resistivity measurements for continuous monitoring of the municipal solid waste biodrying process |
| topic | real-time monitoring solid waste biodrying non-invasive waste analysis process optimization electrical resistivity |
| url | https://www.mdpi.com/2313-4321/10/2/32 |
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