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Selected Papers From: EARTH 2022-Green Technologies for Waste to Energy and Net Zero CO2 Emissions

A special issue of Energies (ISSN 1996-1073). This special issue belongs to the section "B: Energy and Environment".

Deadline for manuscript submissions: closed (31 December 2022) | Viewed by 2805

Special Issue Editors


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Guest Editor
Department of Resources Engineering, National Cheng Kung University, No. 1, Daxue Rd., East Dist., Tainan 70101, Taiwan
Interests: extractive metallurgy; resource circulation; and waste management

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Guest Editor
Department of Materials Science and Engineering, National Cheng Kung University, No. 1, Daxue Rd., East Dist., Tainan 70101, Taiwan
Interests: functional ceramic coating; high-entropy ceramics; biomaterials; photocatalysis; mechanical properties
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Special Issue Information

Dear Colleagues,

The 16th EARTH Symposium (EARTH 2022) is the premier international congress in the field of resource circulation. Its main objective is to foster knowledge transfer and to exchange experience amongst delegates with diverse academic and industrial backgrounds.

The congress offers the ability to learn about the latest advances in resource processing, hydrometallurgy, pyrometallurgy, organic–inorganic material processing, waste-to-energy processes, recycling policies and management, net-zero CO2 emissions, and other important topics related to the environment, waste-to-energy processes, and resource and material recycling.

  1. Focus: This Special Issue focuses on introducing waste-to-energy processes, energy policy and management strategies, and net-zero CO2 emissions throughout East Asia (Korea, Japan, Taiwan, China, and Thailand).
  2. Scope: The notable level of urbanization worldwide is accompanied by an exponential increase in power demands and limited resources. There are growing pressures and challenges caused by climate change, water scarcity, GHG emissions, increasing demands for energy and land loss, etc. Therefore, waste-to-energy processes, optimal energy policy and management strategies, and net-zero CO2 emissions are the optimal options for future generations.
  3. Purpose: This Special Issue aims to introduce new waste-to-energy and net-zero CO2 emission technologies. Moreover, policy and management strategies for energy savings and net-zero CO2 emissions are also targets. Therefore, the scope and aim of this Special Issue are to introduce recent research on energy and net-zero CO2

Dr. Wei-sheng Chen
Prof. Dr. Yen-Hsun Su
Guest Editors

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Keywords

  • waste-to-energy
  • policing and management strategies for energy
  • new green energy materials
  • techniques to achieve net-zero CO2 emissions
  • policing and management of net-zero CO2

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Published Papers (1 paper)

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Research

13 pages, 2709 KiB  
Article
Development of Microencapsulation-Hybrid Jig Separation Technique as a Clean Coal Technology
by Theerayut Phengsaart, Ilhwan Park, Jirathpapol Pasithbhattarabhorn, Palot Srichonphaisarn, Chinawich Kertbundit, Nutthakarn Phumkokrux, Onchanok Juntarasakul, Carlito Baltazar Tabelin, Naoki Hiroyoshi and Mayumi Ito
Energies 2023, 16(5), 2432; https://doi.org/10.3390/en16052432 - 3 Mar 2023
Cited by 9 | Viewed by 2204
Abstract
In this study, the microencapsulation-hybrid jig separation technique was developed to improve the separation efficiency of pyrite and coal in the particle size range of 1–4 mm where conventional jig separation becomes inefficient. A hybrid jig is a gravity concentrator combining the concepts [...] Read more.
In this study, the microencapsulation-hybrid jig separation technique was developed to improve the separation efficiency of pyrite and coal in the particle size range of 1–4 mm where conventional jig separation becomes inefficient. A hybrid jig is a gravity concentrator combining the concepts of jig separation and flotation to stratify particles based on their apparent specific gravity. Meanwhile, microencapsulation—a technique that encapsulates target materials with a protective coating—was applied to render pyrite hydrophilic and improve its separation from hydrophobic coal. The results showed that the required time for separation in the hybrid jig (0.5 min) was shorter than in conventional jig (2 min). Moreover, the effects of particle size on separation efficiency were reduced when a hybrid jig is used. However, the separation efficiency of hybrid jig separation was lower than that of the conventional jig because attachment of bubbles occurred to both pyrite and coal, which are hydrophobic. Using the microencapsulation-hybrid jig separation technique, the separation of coal and pyrite was significantly improved (~100%) because of the formation of hydrophilic iron phosphate coatings on pyrite that limited bubble attachment. This means that microencapsulation-hybrid jig separation is a promising clean coal technology that not only enhances the separation efficiency of the hybrid jig but also passivates pyrite and limits AMD formation in the tailings/rejects. Full article
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