Pengaruh Kuat Arus Terhadap Performa Desorpsi Elektrodialisis Lithium Dari Larutan Hasil Leaching Black Mass Nmc/Lco Menggunakan Membran Berbasis Nanochitosan Oligosaccharide

Amelia, Maura Canisa (2026) Pengaruh Kuat Arus Terhadap Performa Desorpsi Elektrodialisis Lithium Dari Larutan Hasil Leaching Black Mass Nmc/Lco Menggunakan Membran Berbasis Nanochitosan Oligosaccharide. Other thesis, Institut Teknologi Sepuluh Nopember Surabaya.

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Abstract

Peningkatan kebutuhan litium mendorong pengembangan proses pemulihan litium dari limbah baterai litium-ion. Penelitian ini bertujuan menganalisis pengaruh pre-treatment dan pelindian menggunakan asam sitrat terhadap pelepasan Li dari black mass NMC/LCO serta mengevaluasi pengaruh kuat arus terhadap desorpsi Li menggunakan membran NanoCOS dan NanoCOS–PEG. Black mass terlebih dahulu melalui tahap pre-treatment, kemudian dilindi menggunakan asam sitrat 0,1 M pada temperatur 80 °C. Larutan hasil pelindian dipresipitasi menggunakan NaOH, dilanjutkan dengan proses adsorpsi dan desorpsi. Desorpsi dilakukan menggunakan HCl 0,1 M pada pH 1 dengan variasi arus 0,5 A, 1 A, dan 2 A selama 60 menit. Hasil penelitian menunjukkan bahwa pre-treatment mampu mengurangi komponen organik dan binder PVDF tanpa menyebabkan perubahan signifikan pada struktur utama material katoda. Pelindian menghasilkan konsentrasi Li sebesar 2207,05 ppm dengan persentase pelarutan 54,90%. Pelarutan Li lebih dominan dibandingkan Co, Ni, dan Fe, tetapi belum selektif terhadap Mn yang mencapai konsentrasi 4154,37 ppm dengan persentase pelarutan 56,04%. Pengaruh kuat arus terhadap desorpsi Li menunjukkan pola yang tidak linier. Persentase desorpsi tertinggi pada membran NanoCOS–PEG diperoleh pada arus 2 A selama 45 menit sebesar 43,57%, sedangkan pada membran NanoCOS diperoleh pada arus 0,5 A selama 15 menit sebesar 53,80%. Peningkatan arus hingga 2 A tidak selalu meningkatkan desorpsi Li secara konsisten. Proses desorpsi juga disertai ko-desorpsi ion pengotor, terutama Mn. Pada NanoCOS–PEG, konsentrasi Mn cenderung meningkat seiring kenaikan arus, sedangkan pada NanoCOS menunjukkan pola yang tidak linier. Hasil tersebut menunjukkan bahwa efektivitas dan selektivitas desorpsi dipengaruhi oleh kuat arus, waktu, komposisi membran, jumlah ion yang teradsorpsi, dan kompetisi transport ion dalam larutan multikation.
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The increasing demand for lithium has encouraged the development of lithium recovery processes from spent lithium-ion batteries. This study aimed to analyze the effects of pre-treatment and citric acid leaching on Li release from NMC/LCO black mass and to evaluate the effect of electric current on Li desorption using NanoCOS and NanoCOS–PEG membranes. The black mass was initially subjected to pre-treatment and subsequently leached using 0.1 M citric acid at 80 °C. The leachate was precipitated using NaOH, followed by adsorption and desorption processes. Desorption was carried out using 0.1 M HCl at pH 1 with current variations of 0.5, 1, and 2 A for 60 min. The results showed that pre-treatment reduced organic components and the PVDF binder without causing significant changes to the main structure of the cathode material. The leaching process produced a Li concentration of 2,207.05 ppm with a dissolution percentage of 54.90%. Li dissolution was more dominant than that of Co, Ni, and Fe but was not selective over Mn, which reached a concentration of 4,154.37 ppm and a dissolution percentage of 56.04%. The effect of current on Li desorption exhibited a nonlinear pattern. The highest desorption percentage for the NanoCOS–PEG membrane was obtained at 2 A after 45 min, reaching 43.57%, whereas the NanoCOS membrane achieved its highest desorption percentage of 53.80% at 0.5 A after 15 min. Increasing the current to 2 A did not consistently enhance Li desorption. The desorption process was also accompanied by the co-desorption of impurity ions, particularly Mn. For NanoCOS–PEG, the concentration of desorbed Mn tended to increase with increasing current, whereas NanoCOS exhibited a nonlinear response. These results indicate that desorption efficiency and selectivity are influenced by current, desorption time, membrane composition, the amount of adsorbed ions, and competitive ion transport in a multication solution.

Item Type:	Thesis (Other)
Uncontrolled Keywords:	Black mass, Desorpsi, Litium, Leaching, Membran Black Mass, Desorption, Lhitium, Leaching, Membranes
Subjects:	Q Science > QD Chemistry > QD547 Flocculation, precipitation, adsorption, etc. T Technology > TN Mining engineering. Metallurgy > TN688 Hydrometallurgy T Technology > TP Chemical technology > TP248.25.M46 Membrane separation
Divisions:	Faculty of Industrial Technology > Material & Metallurgical Engineering > 28201-(S1) Undergraduate Thesis
Depositing User:	Maura Canisa Amelia
Date Deposited:	22 Jul 2026 06:58
Last Modified:	22 Jul 2026 06:58
URI:	http://repository.its.ac.id/id/eprint/136448

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