Extraction and Stripping Behaviour Study on Gold Recovery from Printed Circuit Board

International Conference on Sustainable Energy and Green Technology 2018

能源学;生态环境科学

Jumain Jalil, Mohd^1 ; Md Zaini, Mohd Saufi^2 ; Suhada Azmi, Intan^1 ; Farahanim Wan Shah, Nik Nur^1

Faculty of Chemical Engineering, Universiti Teknologi MARA Cawangan Pulau Pinang, Permatang Pauh, Pulau Pinang

13500, Malaysia^1

Faculty of Chemical Engineering, Universiti Teknologi MARA Cawangan Terengganu, Kampus Bukit Besi, Dungun, Terengganu

23200, Malaysia^2

关键词: D2EHPA;    Di(2-ethylhexyl)phosphoric acid;    Extraction systems;    Leaching solution;    Optimised conditions;    Printed circuit boards (PCB);    Stripping efficiency;    Suitable conditions;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/268/1/012003/pdf
DOI  :  10.1088/1755-1315/268/1/012003

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

Single extraction was used to investigate the suitable condition parameters of temperature and agitation speed in extracting gold, Au (III) from printed circuit board (PCB). Extractant di-(2-ethylhexyl) phosphoric acid (D2EHPA) was mixed with thiourea leaching solution. From the extraction system, the optimised conditions are the temperature of 45°C and the agitation speed of 300rpm and obtained 88% of percentage of extraction (%E). In order to enhance the recovery of Au(III), three samples underwent stripping process, the results from three samples which are sample 1,2 and 3 showed the percentage of stripping efficiency (%S) were 50.37%, 29.58% and 25.64% respectively. The results of FTIR showed the presence of C-H and C-O bond in waste cooking oil and after addition of D2EHPA into the diluent the P-O-H, P-O-C and O-H vibration band were appeared.