Solvent extraction of Cu(I) from waste etch chloride solution using tri-butyl phosphate (TBP) diluted in 1-octanol
Solvent extraction of Cu(I) from waste etch chloride solution using tri-butyl phosphate (TBP) diluted in 1-octanol
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DOI：
10.1016/j.seppur.2008.03.007
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发表时间：
2008-09
影响因子：
8.6
通讯作者：
Jae-chun Lee;Tiejian Zhu;M. Jha;Sookyung Kim;Kyoungkeun Yoo;Jinki Jeong
中科院分区：
文献类型：
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作者：
Jae-chun Lee;Tiejian Zhu;M. Jha;Sookyung Kim;Kyoungkeun Yoo;Jinki Jeong
亚铜离子具有与不同配体形成稳定的高溶解度配合物的性质，在各个行业中有着广泛的应用。相对于溶剂萃取铜离子的广泛研究和开发工作，有机萃取剂萃取铜离子的研究报道有限。因此，在目前的工作中，溶剂萃取研究已进行了萃取剂磷酸三丁酯（TBP）稀释在正辛醇中的氯化物溶液中的亚铜离子Cu（I），用于回收铜（I）的印刷电路板（PCB）的蚀刻废物的应用。最初，进行了研究，以选择合适的稀释剂用于从氯化物溶液中萃取Cu（I）。有机正辛醇是TBP的有效稀释剂。研究了TBP在正辛醇中的稀释液从氯化物溶液中萃取Cu（I）的行为和机理。各种工艺参数，即接触时间、氯离子、盐酸和萃取剂的浓度、温度等，也进行了研究。用正辛醇稀释的TBP萃取剂萃取多氯联苯生产过程中产生的含Cu（I）和Cu（II）的氯化废液中的Cu（I）。萃取等温线图表明完全萃取Cu（I）需要两个阶段。研究表明，在有机相中形成了络合物[CuCl 2 −·H+·TBP]。萃取和反萃研究表明，TBP稀释在1-辛醇回收亚铜离子的多氯联苯的氯化物蚀刻废液的适用性。
Cuprous ion has wide applications in various industries due to its properties to form stable coordination compound of high solubility with different ligands. Compared to extensive R&D work on solvent extraction of cupric ion, the limited work is reported on cuprous ion extraction using organic extractant. Therefore, in the present work, solvent extraction studies have been carried out for the extraction of cuprous ion Cu(I) from chloride solution using extractant tri-butyl phosphate (TBP) diluted in 1-octanol, for application to recover Cu(I) from the etch waste of printed circuit boards (PCBs). Initially, the studies were carried out for the selection of suitable diluent to be used for Cu(I) extraction from chloride solution. The organic 1-octanol was found effective diluent for TBP. The behavior and reaction mechanism of TBP diluted in 1-octanol was also studied for the extraction of Cu(I) from chloride solution. Various process parameters viz. contact time, concentration of chloride ion, hydrochloric acid and extractant, temperature, etc., were also studied. The extractant TBP diluted in 1-octanol was found suitable for the extraction of Cu(I) from the waste chloride solution (containing both Cu(I) and Cu(II)) generated from the plant of PCBs manufacturing. The extraction isotherm plot indicates the requirement of two stages for the complete extraction of Cu(I). The studies revealed the formation of complex [CuCl2−·H+·TBP] in the organic phase. The extraction and stripping studies showed the suitability of the TBP diluted in 1-octanol for the recovery of cuprous ion from the waste chloride etch solution of PCBs.