- Thesis topic: Palladium Extraction from wasted Glucometer Strip via Supported Liquid membrane Process

- Doi: https://doi.org/10.6840/cycu202000578

- Abstract: 

      Glucometer Electrochemical Test Strips (GETS) as Palladium 's main alternative resource material has been used to transform wastewater from solid to liquid via leaching phase. The leaching method was analyzed using the same parameters as though the leaching agent, concentration, temperature, pace of agitation, contact duration, and S / L ratio. The extraction of solvents using 2-Nonanone was studied using different criteria such as diluent, concentration and O: a ratio. The parameter used is a ratio of stripping agent, concentration, and O: A.
The supported liquid membrane (SLM) was performed by selected parameters from the leaching process and solvent extraction aside from the contact time, flow rate and pressure in instrument operation. Its parameter will continue to 24 hours to investigate the optimum recovery rate. SLM was chosen as advanced technology with metal extraction in a single unit. Optimum parameters for leaching are using 1M H₂SO₄; 150°C; 500 rpm; 24 hours; 1:20 S: L ratio. As same as solvent extraction via 3% 2-Nonanone in Isopar-G by 1:2 O: A ratio has reached optimum Palladium concentration will be stripped using 4M H₂SO₄; by 1:8 A: O ratio. In a nutshell, selected parameter from solvent extraction applied to SLM process of Feed: Extractant: Stripping Agent Ratio is 6:3:1.
     The SLM cycle provided enriched feed of 4.49 times greater concentration to stripping agent. From initial 17.8 ppm to 80 ppm. The SLM machine has a recovery efficiency of 74.906 per cent. This concentrated liquid phase of the strip solution had achieved precipitation in 3 M oxalic acid and calcination in 500 degrees within 5 hours in order to produce Palladium powder with Pd-Zn purity of 77.3%.

Keywords: Palladium, Solvent Extraction, SLM, Precipitation, Calcination