Recovery of Cu (II) and Cr (VI) Metals from Electroplating Liquid Waste Using Polymer Inclusion Membrane (PIM)

Reaktor Pub Date : 2018-08-24 DOI:10.14710/REAKTOR.18.2.102-109

M. C. Djunaidi, Nor Basid Adiwibawa Prasetya, N. Setyowati, Khabibi Khabibi, Khoirun Nita Ulfia

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引用次数: 1

Abstract

Research on recovery of Cu (II) and Cr (VI) from electroplating liquid waste has been carried out using a Polymer Inclusion Membrane (PIM). PIM has a high stability to overcome the weakness of liquid membrane instability. The PIM membrane was placed between two phases namely the feed phase as a metal source of Cu (II) from electroplating waste with pH 3 and the receiving phase which is HNO3 solution with pH 1 and pH 4.4 in the feed phase and pH 6.3 in the receiving phase with NaCl 2 N for metal Cr (VI). Recovery efficiency is known by determining the concentration of Cu (II) and Cr (VI) in the feed and receiving phases using AAS, while the membrane characterization were carried out using FTIR, SEM and UV-vis spectroscopy. The resulting PIM membrane has properties of thin, clear and flexible. AAS data showed that the percentage of PIM transport with stirring for 24 hours performed the highest percentage of Cu (II) metal transport from feed phase of 83.41% and transport in the receiving phase of 72.56%. While the percentage of optimum Cr (VI) transport was 97.8% in the feed phase and 76.5% in the receiving phase. The results of membrane characterization using FTIR and UV spectroscopy showed that the PIM membrane was quite stable. While the results of SEM show that there were no pores in the membrane so that the transport occurs by diffusion through the intermediate of the carrier compound. Keywords: electroplating waste; liquid membrane; PIM

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聚合物包合膜回收电镀废液中的Cu (II)和Cr (VI)金属

采用高分子包合膜(PIM)从电镀废液中回收Cu (II)和Cr (VI)进行了研究。PIM具有较高的稳定性，克服了液膜不稳定的缺点。PIM膜之间放置两个阶段即提要阶段作为一个金属铜(II)从电镀废水pH值3和接收阶段与pH值1和硝酸溶液pH值4.4饲料阶段和pH值6.3在接收阶段与氯化钠2 N金属铬(VI)。采收率是通过确定铜(II)的浓度和铬(VI)的饲料和接收阶段使用原子吸收光谱法,而膜使用红外光谱进行了表征,扫描电镜和紫外可见光谱。所得的PIM膜具有薄、透明、柔韧等特点。AAS数据表明，搅拌24 h的PIM输运率最高，Cu (II)金属从进料相输运率为83.41%，在接收相输运率为72.56%。Cr (VI)输运率在进料期为97.8%，在接收期为76.5%。用红外光谱和紫外光谱对膜进行了表征，结果表明该膜具有较好的稳定性。而扫描电镜结果表明，膜上没有孔隙，通过载体化合物的中间体进行扩散转运。关键词:电镀废弃物;液膜;PIM

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Reaktor

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2 weeks