Removal of iron from silica sand: Oxalic acid leaching with leachate treatment by photochemical reduction and biodegradation

摘要

As part of a project investigating the removal of iron from silica sand, aspects of the integration of oxalic acid leaching with photochemical and biological effluent treatment have been described. Small scale column leaching (modelling heap leaching) of iron-rich sand from Scotland indicated that an acceptable proportion (approxiately 30