Development of A Coordination Polymer based Electro-Dialytic K Recovery System

2023 Fiscal Year Final Research Report

• Project/Area Number: 20K12250
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Review Section: Basic Section 64030:Environmental materials and recycle technology-related
• Research Institution: National Institute of Advanced Industrial Science and Technology
• Principal Investigator: Parajuli Durga 国立研究開発法人産業技術総合研究所, 材料・化学領域, 主任研究員 (30512222)
• Project Period (FY): 2020-04-01 – 2023-03-31
• Keywords: 電気化学 / 水処理 / イオン分離・回収

Outline of Final Research Achievements

The research was aimed at the preparation of an electrodialytic system with the optimized material for both cathode and anode. However, due to several limitations only halfcell of the adsorption of cations, ammonium and/or potassium ions was optimized. Though the target outcome was partly achieved, a system that can be utilized for decontamination and resource sustainability, which should be energy and cost-effective as well, was established. The most challenging part of the research was to establish a homogeneously conductive cell that holds good stability in water and during the application of voltage. The addition of some conducting materials like carbon black could enhance the overall performance, yet the overuse might lead to compromised selectivity. This work is still in the starting phase from the application point of view. Yet, the outcome provides enormous hope for the area of removal, recovery, and desalination.

Free Research Field

材料化学

Academic Significance and Societal Importance of the Research Achievements

In the fied of ion recovery using ion-selctive materials, a counter anion that can elute or desorb the adsorbed ion becomes necessary. With the use of electrochemical system, the desorption and meterial regeneration can be done using the electric voltage. This can be a truly green approach.