Hidayat, Ahmad (2023) STUDI PEMISAHAN KOBALT DAN NIKEL DARI PREGNANT LEACH SOLUTION HASIL MODIFIKASI PROSES CARON DENGAN METODE SOLVENT EXTRACTION. S1 thesis, Fakultas Teknik Universitas Sultan Ageng Tirtayasa.
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Abstract
An environmentally friendly nickel laterite processing process is an important need today, considering the many reports of environmental damage caused by the metal processing industry. Previous research carried out nickel laterite leaching using MSG. Pregnant leach solution (PLS) resulting from the leaching requires further purification. Solvent extraction (SX) is a commonly used and versatile purification method, SX was chosen because of its selectivity, low chemical consumption, and recyclability. The extractants used in nickel SX are generally acid extractants such as Cyanex 272, PC88A, and D2EHPA. However, strict pH maintenance is required during extraction, and strong acids must be used in the stripping process, which can have a negative impact on the environment and ecosystem. It is important to resolve these negative impacts on the environment immediately. This research aims to look for alternative, more environmentally friendly processes for SX nickel and cobalt. Extractants such as Ionic liquid and solvating are extractants that are more environmentally friendly and easy to handle. In this research, SX was carried out at room temperature, A/O phase = 1/1, rotational speed = 1000 RPM, and a time of 10 minutes. The TPPO type extractant has the best extraction and separation effectiveness compared to Cyphos IL 104 and TEHP in MSG leaching media, namely nickel and cobalt extraction is 8.98% and 0.11% respectively. On the effect of concentration, TPPO extractant was used at concentrations of 0.2; 0.4; 0.6; 0.8; and 1M. The best SX results were obtained at a concentration of 0.8M TPPO with nickel and cobalt extraction values of 21.01% and 0.08% respectively. In this research, there was a third phase phenomenon which was undesirable because it made handling the process difficult. Further research needs to be done to improve the effectiveness of extraction and understand the third phase better.
| Item Type: | Thesis (S1) | |||||||||
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| Additional Information: | Proses pengolahan nikel laterit yang ramah lingkungan merupakan kebutuhan penting saat ini, mengingat banyaknya laporan kerusakan lingkungan yang diakibatkan industri pengolahan logam. Penelitian sebelumnya melakukan pelindian nikel laterit menggunakan MSG. Pregnant leach solution (PLS) hasil pelindian tersebut memerlukan pemurnian lebih lanjut. Solvent extraction (SX) merupakan metode pemurnian yang umum digunakan dan serbaguna, SX dipilih karena selektivitasnya, konsumsi bahan kimia yang rendah, dan dapat didaur ulang. Ekstraktan yang digunakan pada SX nikel umumnya adalah ekstraktan asam seperti Cyanex 272, PC88A, and D2EHPA. Namun, pemeliharaan pH yang ketat diperlukan selama ekstraksi, dan asam kuat harus digunakan dalam proses stripping, yang dapat berdampak negatif terhadap lingkungan dan ekosistem. Dampak buruk bagi lingkungan tersebut penting untuk segera diselesaikan, Penelitian ini bertujuan untuk mencari alternatif lain proses yang lebih ramah lingkungan pada SX nikel dan kobalt. Ekstraktan seperti Ionic liquid dan solvating merupakan ekstraktan yang lebih ramah lingkungan serta mudah penanganannya. Pada penelitian ini SX dilakukan pada temperatur kamar, fasa A/O = 1/1, kecepatan putar =1000 RPM, dan waktu selama 10 menit. Ekstraktan jenis TPPO memiliki efektifitas ekstraksi dan pemisahan terbaik dibandingkan Cyphos IL 104 dan TEHP dalam media pelindian MSG, yaitu ekstraksi nikel dan kobalt masing-masing adalah 8,98% dan 0,11%. Pada pengaruh konsentrasi digunakan ekstraktan TPPO pada konsentrasi masing-masing 0,2;0,4;0,6;0,8; dan 1M. Hasil SX terbaik diperoleh pada konsentrasi 0,8M TPPO dengan nilai ekstraksi nikel dan kobalt masing-masing adalah 21,01% dan 0,08%. Pada penelitan kali ini terdapat fenomena fase ketiga yang tidak diinginkan karena mempersulit penanganan proses. Penelitan lebih lanjut perlu dilakukan meningkatkan efektifitas ekstraksi dan memahami fase ketiga lebih baik. | |||||||||
| Subjects: | T Technology > T Technology (General) T Technology > TN Mining engineering. Metallurgy |
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| Divisions: | 03-Fakultas Teknik 03-Fakultas Teknik > 27201-Jurusan Teknik Metalurgi |
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| Depositing User: | Ahmad Hidayat | |||||||||
| Date Deposited: | 07 Sep 2023 14:03 | |||||||||
| Last Modified: | 07 Sep 2023 14:03 | |||||||||
| URI: | http://eprints.untirta.ac.id/id/eprint/29364 |
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