机构地区: 广东工业大学轻工化工学院
出 处: 《城市环境与城市生态》 2002年第5期59-60,共2页
摘 要: 废弃电子电路板经王水溶解后 ,在盐酸介质中 ,用自制的黄原酯棉吸附。用 6mol/LHCl洗涤杂质后 ,5 %Na2 SO3 洗脱Au ,控制溶液的流速为 1mL/min。洗脱液浓缩后 ,再用 2 0 %Na2 SO3 沉淀得到 99.5 9%Au。 In HCl medium, cotton cellulose xanthate absorb the solution where the abandoned electronics circuit board is dissolved by the king water. Impurity are washed out by 6mol/L HCl. The AuCl 4 - is eluted with 5% Na 2SO 3 at a flow rate of 1mL/min.After the elute is concentrated, Au is precipitated by 20% Na 2SO 3. The gold of 99.59% purity is got.
领 域: [环境科学与工程]