수소연료전지 폐기물 기반 백금촉매 재자원화 시 침출 공정인자 연구

초록

Platinum group metal (PGM) are important rare metals used in advanced industries, and their reserves are geographically concentrated, limiting their stable global supply. This study is an experimental study to derive process conditions that show the maximum and optimal leaching rate by appropriately combining three process factors: first, leaching concentration, second, leaching temperature, and third, concentration time, in the leaching process, which is the most important recycling process for platinum contained in trace amounts in various wastes such as first, waste catalyst (solid), second, waste catalyst (liquid), third, waste water, and fourth, waste membrane electrode assembly generated during the hydrogen fuel cell manufacturing process. As a result of a comparative leaching test of PGM with several oxidizing agents, aqua regia, which has a strong oxidizing power, was used as a platinum leaching agent because it generates nitrosyl chloride.

키워드