LAS(Lithium-Aluminosilicate) 순환물질 침출 잔사 내 제올라이트를 이용한 Mg-Zeolite 개질 및 중금속 흡착 제거 연구

Abstract

Due to the recent industrial development, water pollution is getting serious. Water pollution is becoming serious due to industrial wastewater generated from factories. The main cause of water pollution from industrial wastewater in factories is pollution by heavy metals. Heavy metals have a very harmful effect on the human body. Therefore, industrial wastewater must be discharged after passing the discharge allowance standard. Various methods are being studied for the removal of heavy metals in industrial wastewater. Recently, a lot of research is underway as a method of removing using zeolite using adsorption properties. In this study, zeolite existing in the leaching residue of LAS (Lithium-Aluminosilicate) recycled resources, which is a kind of glass & ceramic emerging as a substitute for lithium raw materials, was used as the main raw material. First, a reforming process experiment was conducted with Mg-Zeolite, which has excellent adsorption capacity, and an optimal reforming study was conducted. After that, a test wastewater solution was prepared and a study on the adsorption and removal of contaminants present in industrial wastewater was conducted with the modified Mg-Zeolite. In addition, in order to obtain only pure zeolite in the LAS leaching residue, a lithium compound was converted into lithium sulfate to further remove lithium, and a method for recovering lithium from the LAS recycled material was also devised.