AR RASYID, REGINA CAHYANI NURHASANAH (2023) PEROLEHAN KEMBALI LOGAM LITIUM DAN KOBALT DARI LIMBAH BATERAI LITIUM ION MELALUI METODE SOLVOLEACHING. S1 thesis, Fakultas Teknik Universitas Sultan Ageng Tirtayasa.
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Abstract
Lithium Ion batteries have rapidly evolved as the power source of choice for portable electronic devices and sustainable transportation over the last two decades. From an environmental and health point of view, lithium-ion batteries can pose a hazard if improper disposal is carried out, as they contain heavy metals and toxic electrolytes. On the other hand, used lithium-ion batteries contain large amounts of valuable metals (Li, Co, Ni, Mn, Cu, Al, Fe). Therefore, recycling used lithium-ion batteries is necessary from the point of view of environmental protection and saving resources. The solvoleaching method was chosen because this method has the advantage that the leaching and solvent extraction processes can be combined into one step, resulting in a more straightforward process flow sheet. To optimize the recovery of lithium and cobalt, a solvoleaching process was carried out with several variations. The solvoleaching process was carried out by varying the type of extractant, namely TBP, D2EHPA, Versatic Acid 10, and Cyanex 272. Varying the concentration of the extractant 20, 40, 60, and 80 %vol and running the S/L ratio = 15, 20, 25, 30 gL-1 to determine the optimum conditions for recovering lithium and cobalt from lithium-ion batteries. Conventional leaching was also carried out using sulfuric acid to determine whether solvoleaching could be a better alternative to recover lithium and cobalt metal than conventional leaching. The optimum condition for the solvoleaching process was 80% vol D2EHPA with a ratio of S/L 25 gL-1 for 6 hours at 80oC, 92.32% cobalt and 91.83% lithium. The average values of cobalt selectivity are SCo/Li = 0.54, SCo/Al = 0.53, SCo/Fe = 0.52, SCo/Mn = 0.53, SCo/Ni = 0.54, and SCo/ Cu = 0.47. Meanwhile, the average value of lithium selectivity is SLi/Al = 0.49, SLi/Fe = 0.48, SLi/Mn = 0.49, SLi/Ni = 0.51, SLi/Co = 0.46, and SLi/Cu = 0.43, this value indicates that cobalt and lithium cannot be separated selectively from other metals. A comparison was also made between the solvoleaching method and conventional leaching, the result was that solvoleaching could be an alternative to recover metals from lithium-ion battery waste. With the same leaching conditions, the solvoleaching process can intensify the extraction process and is more environmentally friendly because there is less need for acidic reagents.
| Item Type: | Thesis (S1) | |||||||||
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| Additional Information: | Baterai Litium Ion telah berkembang pesat sebagai sumber daya pilihan untuk perangkat elektronik portabel dan transportasi berkelanjutan sejak dua dekade terakhir. Dari sudut pandang lingkungan dan kesehatan, baterai litium ion dapat menimbulkan bahaya jika proses pembuangan baterai dilakukan secara tidak tepat, karena baterai ini mengandung logam berat serta elektrolit beracun. Di sisi lain, baterai litium ion bekas mengandung sejumlah besar logam berharga (Li, Co, Ni, Mn, Cu, Al, Fe). Oleh karena itu, daur ulang baterai litium ion bekas diperlukan dari sudut pandang perlindungan lingkungan dan juga penghematan sumber daya. Pemilihan metode solvoleaching dikarenakan metode ini memiliki keuntungan yaitu proses leaching dan solvent extraction dapat digabungkan menjadi satu langkah, sehingga menghasilkan lembaran alur proses yang lebih sederhana. Untuk mengoptimalkan perolehan kembali litium dan kobalt, dilakukan proses solvoleaching dengan beberapa variasi. Proses solvoleaching dilakukan dengan memvariasikan jenis ekstraktan yaitu TBP, D2EHPA, Versatic Acid 10, dan Cyanex 272. Memvariasikan konsentrasi ekstraktan 20, 40, 60, 80 %vol dan memvariasikan rasio S/L = 15, 20, 25, 30 gL-1 untuk mengetahui kondisi optimum untuk memperoleh kembali litium dan kobalt dari baterai litium ion. Dilakukan juga leaching konvensional menggunakan asam sulfat untuk mengetahui apakah solvoleaching dapat menjadi alternatif yang lebih baik untuk memperoleh kembali logam litium dan kobalt dibandingkan dengan leaching konvensional. Hasil kondisi optimum yang didapat untuk proses solvoleaching adalah 80 %vol D2EHPA dengan rasio S/L 25 gL-1 selama 6 jam pada temperatur 80oC yaitu didapatkan 92,32% kobalt dan 91,83% litium. Nilai rata-rata selektivitas kobalt yaitu SCo/Li = 0,54, SCo/Al = 0,53, SCo/Fe = 0,52, SCo/Mn = 0,53, SCo/Ni = 0,54, dan SCo/Cu = 0,47. Sedangkan, nilai rata-rata selektivitas litium yaitu SLi/Al = 0,49, SLi/Fe = 0,48, SLi/Mn = 0,49, SLi/Ni = 0,51, SLi/Co = 0,46, dan SLi/Cu = 0,43, nilai ini menunjukkan bahwa kobalt dan litium belum dapat terpisah secara selektif dari logam lainnya. Dilakukan juga perbandingan antara metode solvoleaching dengan leaching konvensional, didapatkan hasil bahwa solvoleaching mampu menjadi alternatif untuk memperoleh kembali logam dari limbah baterai litium ion. Dengan kondisi leaching yang sama, proses solvoleaching dapat mengintensifikasikan proses ekstraksi, serta lebih ramah lingkungan karena lebih sedikitnya kebutuhan reagen asam yang digunakan. | |||||||||
| Subjects: | T Technology > T Technology (General) T Technology > TN Mining engineering. Metallurgy |
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| Divisions: | 03-Fakultas Teknik > 27201-Jurusan Teknik Metalurgi | |||||||||
| Depositing User: | Mrs Regina Cahyani Nurhasanah Ar Rasyid | |||||||||
| Date Deposited: | 24 Aug 2023 15:32 | |||||||||
| Last Modified: | 06 Sep 2023 14:58 | |||||||||
| URI: | http://eprints.untirta.ac.id/id/eprint/28963 |
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