An Experimental 13.56 MHZ Radio Frequency Heating System for Efficient Thermal Pretreatment of Wastewater Sludge

Ferdous, Md. Shafiul; Koupaie, E. Hosseini; Eskicioğlu, Çiğdem; Johnson, and Thomas

doi:10.2528/pierb17091409

Cited by 17 publications

(4 citation statements)

References 25 publications

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“…The software provided a convenient way to control thermal ramp rates and final load temperatures to match heating profiles used in CH and MW experiments. Further details on the electrical design of the RF heating system are available in other publications [ 37 , 38 , 39 ].…”

Section: Methodsmentioning

confidence: 99%

Comparison of Different Electricity-Based Thermal Pretreatment Methods for Enhanced Bioenergy Production from Municipal Sludge

2018

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This paper presents results for a comprehensive study that compares the performance of three electricity-based thermal pretreatment methods for improving the effectiveness of anaerobic digestion (AD) to process municipal wastewater sludge. The study compares thermal pretreatment using conventional heating (CH), microwave (MW), and radio frequency (RF) heating techniques. The effectiveness of the pretreatment methods was assessed in terms of chemical oxygen demand (COD) and biopolymers solubilization, AD bioenergy production, input electrical energy, and overall net energy production of the sequential pretreatment/AD process. The heating applicators for the bench-scale testing consisted of a custom-built pressure-sealed heating vessel for CH experiments, an off-the-shelf programmable MW oven operating at a frequency of 2.45 GHz for MW heating experiments, and a newly developed 1 kW RF heating system operating at a frequency of 13.56 MHz for RF heating experiments. Under identical thermal profiles, all three thermal pretreatment methods achieved similar sludge disintegration in terms of COD and biopolymer solubilization as well as AD bioenergy production (p-value > 0.05). According to the energy assessment results, the application of CH and MW pretreatments resulted in overall negative energy production, while positive net energy production was obtained through the sequential pretreatment/AD process utilizing RF pretreatment.

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Section: Methodsmentioning

confidence: 99%

Comparison of Different Electricity-Based Thermal Pretreatment Methods for Enhanced Bioenergy Production from Municipal Sludge

2018

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“…The second term in the equation is displacement current which originates from the polarization of the dielectric material. To provide an equivalent capacitive behavior it is better to present the time-harmonic form of the Maxwell equation given in (3) [25].…”

Section: A Principle Of Dielectric Heatingmentioning

confidence: 99%

Modeling and Operation of Series-Parallel Resonant Load in Industrial RF Dielectric Heating Application

Ahmad

Jørgensen

Munk‐Nielsen

2023

IEEE Trans. on Ind. Applicat.

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“…Injection to a new patient is given when, we tested the manipulation possibility. These steps are detailed in the diagram Figure 8, if the required fields (id, the patient's illness, age, sex, weight) are fulfilled then a message is displayed' data-base is accepted [19], we subsequently make patient condition verification.…”

Section: Development Of Managaement and Handling Interfacementioning

confidence: 99%

Complex ESP Systems Proposal based on Pump Syringe and Electronically injector Modules for Medical Application

Hamrouni¹

2020

J Multimed Inf Syst

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The paper focuses on conception and development of complex systems composed mainly by a pump syringe subsystem and an electronically injector that facilitates patients saving data operation for medical staff use. We successfully developed conventional approaches for medical system staff requirements, such as system boundary conditions. Decisions at a given level are studied. We propose a complex system architecture, based mainly on patients collected data and ordered stepper injection parameters. System is successfully simulated and prototyped. Design and implement tests are accomplished, the proposed system ensures both the electric syringe pump and the electric injector operation. In addition, this new system introduces several additional options as patient database development and automation injection operation. Development and software operating tests to create a visualization control interface are validated. The solution performs syringe function and electronic injector. User can manage a syringe in two C modes of technology. We propose a program composed of two linked parts. If an error such radiologist bad target selection is made, an image with lower intrinsic quality emerges. Developed Shoot syringe different electronic cards are simulated and prototyped, in addition, maps are driven, prototype. All tests results are accomplished.

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An Experimental 13.56 MHZ Radio Frequency Heating System for Efficient Thermal Pretreatment of Wastewater Sludge

Cited by 17 publications

References 25 publications

Comparison of Different Electricity-Based Thermal Pretreatment Methods for Enhanced Bioenergy Production from Municipal Sludge

Comparison of Different Electricity-Based Thermal Pretreatment Methods for Enhanced Bioenergy Production from Municipal Sludge

Modeling and Operation of Series-Parallel Resonant Load in Industrial RF Dielectric Heating Application

Complex ESP Systems Proposal based on Pump Syringe and Electronically injector Modules for Medical Application

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