Design of materials for selective separation of halogen elements and construction of recycling technology

2023 Fiscal Year Final Research Report

• Project/Area Number: 18K11714
• 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: Chiba Institute of Science
• Principal Investigator: Tezuka Stoko 千葉科学大学, 危機管理学部, 准教授 (70435759)
• Project Period (FY): 2018-04-01 – 2024-03-31
• Keywords: 層状複水酸化物 / イオン交換 / ハロゲン

Outline of Final Research Achievements

Halogen, as an essential element, is indispensable to us and is used as a raw material for disinfectants and pharmaceuticals. Therefore, it is desirable to separate and recover them from natural aquatic environments and wastewater as valuable resources. This study focused on layered double hydroxide (LDH), an inorganic anion exchanger, and investigated its potential as an adsorbent for halide ions. As a result, a simple and inexpensive synthetic method for monoclinic LDH was successfully developed. In addition, information on the adsorption performance of iodide ions by various LDHs was obtained.

Free Research Field

材料化学

Academic Significance and Societal Importance of the Research Achievements

無機系吸着材に対する陰イオン吸着は陽イオンと同様の吸着メカニズムが存在している と考えられているが、実用可能な吸着容量を持つ無機系陰イオン吸着材は LDH のみであ り、未だ明確にはなっていない点が多い。そのため、本研究で報告した単斜晶系LDHの簡易合成手法、共存イオンが多量に存在する中からフッ素を回収できるLDH、ヨウ素吸着量が高いLDHは、学術的にも産業的にも有意義であるといえる。