Recycling metal by membrane distillation

A method of recovering metal from a chemical bath (100) for chemical treatment of a structure with metal wherein the method comprises: feeding a chemical composition comprising metal from the chemical bath to a membrane distillation apparatus (106); separating at least a portion of the metal in a membrane distillation unit (106); and reintroducing the separated metal into the chemical bath (100). 一种从用于通过金属对结构件进行化学处理的化学浴(100)中回收金属的方法，其中，方法包括：将来自化学浴的包括金属的化学组合物供给至膜蒸馏装置(106)；在膜蒸馏装置(106)中分离出金属的至少一部分；以及将分离出的金属再引入化学浴(100)中。