Devika, Sofia Cinintya (2025) Sintesis Tembaga Oksida Sebagai Produk Pasar Berbahan Dasar Limbah Kawat Tembaga dengan Metode Presipitasi. Undergraduate thesis, UPN Veteran Jawa Timur.
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Abstract
E-waste is increasing every year. E-waste covers many types and can also be recycled into valuable products, such as copper waste. Electronic waste containing copper with a high composition comes from waste electrical cables. The increase in the use of cables certainly also increases copper waste. Of course, copper waste is usually only used for the selling price of copper. However, with a little modification it can be a valuable product. Such as the use of copper waste into copper oxide. In addition to the high selling price of the product, the need for copper oxide in Indonesia is also increasing. The process of copper oxide synthesis is also simple and does not require high costs. Therefore, copper oxide synthesis is carried out by the precipitation method using copper waste materials in the hope of meeting market product standards. This study aims to synthesize copper oxide with variations in temperature changes and variations in pH Cu(OH)2 for copper oxide synthesis. This is to determine the effect of temperature on the purity of copper oxide products, particle size, and good crystal structure. The synthesis of copper oxide is made by dissolving 20 grams of copper waste with 375 ml of concentrated nitric acid until a solution of Cu(NO3)2 is formed. This precursor solution is then added drop by drop of NaOH until a blue Cu(OH)2 precipitation is formed with pH variations of 8, 9, 10, 11, 12. After that, the sediment is dried using an oven for 80oC and furnaceed with temperature variations of 500, 700, 650, 600, 550. Copper oxide begins to form through thermal dehydration with the color of the product being black. Copper oxide is analyzed with X-Ray Diffraction (XRD) assays to determine the effect of these variations on crystal purity, crystal size and crystal size. The analysis of the XRD test results was carried out with the help of X-pert Highscore plus software in determining the purity of CuO products through graphs of peak intensity relativity and crystal structure of copper oxide. Scherer's method in determining the size of crystals. This study produces the best copper oxide products Copper (II) oxide is best formed at pH 11 with the use of a thermal dehydration temperature of 650 - 700 °C because it produces a product with a crystal structure in the form of a monoclinic, having the smallest Particle size CuO composition, which is 31.48nm.
| Item Type: | Thesis (Undergraduate) | ||||||||
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| Subjects: | Q Science > QD Chemistry | ||||||||
| Divisions: | Faculty of Engineering > Departement of Chemical Engineering | ||||||||
| Depositing User: | Ms Sofia Cinintya Devika | ||||||||
| Date Deposited: | 28 Jul 2025 07:06 | ||||||||
| Last Modified: | 28 Jul 2025 07:06 | ||||||||
| URI: | https://repository.upnjatim.ac.id/id/eprint/41167 |
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