Groundwater pollution induced by Underground Coal Gasification(UCG)seriously hinders its development. Permeable Reactive Barrier(PRB)remediation therefore stands out as a major research focus for in-situ groundwater remediation. where the characteristics of PRB material is crucial to their effective operation. This study thus examines the adsorption properties of sand. https://foldlyers.shop/product-category/accessories-cctv-cables/