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All Journal Jurnal Presipitasi : Media Komunikasi dan Pengembangan Teknik Lingkungan Indonesian Journal of Chemistry J-Dinamika: Jurnal Pengabdian Kepada Masyarakat
Cornelius Satria Yudha
Program Studi D3 Teknik Kimia, Sekolah Vokasi, Universitas Sebelas Maret
Agriculture, Biological Sciences & Forestry Chemical Engineering, Chemistry & Bioengineering Chemistry Earth & Planetary Sciences Education

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Comparative Study of Various Kinetic Models on Leaching of NCA Cathode Material Soraya Ulfa Muzayanha; Cornelius Satria Yudha; Luthfi Mufidatul Hasanah; Linggar Tungga Gupita; Hendri Widiyandari; Agus Purwanto
Indonesian Journal of Chemistry Vol 20, No 6 (2020)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ijc.49412

Abstract

The kinetics study of NCA leaching in the HCl system was proposed. Various kinetic models such as shrinking core, logarithmic rate law, and Avrami equation were used to find out the most appropriate kinetic models for this process. The effect of HCl concentrations, leaching temperatures, solid to liquid (S/L) ratio, and leaching duration were observed. The optimum conditions of NCA leaching were at HCl concentration of 4 M, temperature of 80 °C, S/L ratio of 100 g/L, and leaching time of 1 h. The result shows that shrinking core model with diffusion control process of residue layer describes well the leaching mechanism in this research, which is indicated by the good fitting of coefficient values of correlation (R2) and confirmed by the activation energy values of Ni, Co, Al that were less than 40 kJ/mol.
Utilization of Spent Nickel Catalyst as Raw Material for Ni-Rich Cathode Material Shofirul Sholikhatun Nisa; Anisa Raditya Nurohmah; Cornelius Satria Yudha; Hanida Nilasary; Hartoto Nursukatmo; Endah Retno Dyartanti; Agus Purwanto
Jurnal Presipitasi : Media Komunikasi dan Pengembangan Teknik Lingkungan Vol 18, No 2 (2021): July 2021
Publisher : Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (526.609 KB) | DOI: 10.14710/presipitasi.v18i2.349-357

Abstract

Spent nickel catalyst will be harmful to the environment if it is not processed or used properly. In fact, this waste still has a high nickel content. The treatment of spent nickel catalysts has been widely reported, but limited to nickel extraction. Since the lithium-ion batteries demand is continued to increase, then nickel is the most sought-after metal. Consequently, nickel from spent nickel catalysts could be developed as secondary source for lithium-ion battery cathode. This study aims to utilize spent nickel catalysts into more valuable materials. Nickel that has been extracted and mixed with Mn and Co has been used as raw material for nickel-rich cathode, namely NMC. Nickel extraction and NMC synthesis were using the acid leaching method followed by co-precipitation[WI1] [SSN2] . Based on the functional test performed in this work, nickel from spent nickel catalyst can be applied to Li-ion batteries. The sintering temperature that gives good characteristics and electrochemistry was found 820oC. The galvanostatic charge-discharge test gave specific capacity results for NMC of 110.4 mAh/g. The cycle test showed that NMC synthesized from spent nickel catalyst can be carried out up to 50 cycles with a capacity retention of 87.18%.
Pembuatan Mikroorganisme Lokal (MOL) dari Bahan Baku Limbah Rumah Tangga sebagai Upaya Peningkatan Kualitas Pupuk Kompos di Desa Rejosari Kecamatan Gondangrejo Kabupaten Karanganyar Al Fuady, Muhammad Iqbal; Salma Khansani , Afanindya; Aulina Rohmah, Binti; Griyasti Suci, Windhu; Asto Putro, Firman; Sekar Eka Ayu Gustiana, Himmah; Satria Yudha , Cornelius; Nur Shohih, Esa
J-Dinamika : Jurnal Pengabdian Masyarakat Vol 10 No 2 (2025): Agustus
Publisher : Politeknik Negeri Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Kepedulian masyarakat dan pemerintah akan pentingnya pengelolaan sampah limbah rumah tangga masih sangat minim di lingkungan kita. Limbah rumah tangga yang belum termanfaatkan dengan baik di Desa Rejosari dapat diolah menjadi mikroorganisme lokal (MOL) yang lebih bernilai serta dapat diaplikasikan pada masyarakat setempat. Mikroorganisme lokal (MOL) merupakan larutan yang menggunakan bahan organik sebagai media untuk kelangsungan hidup dan perkembangan mikroorganisme. Larutan MOL dapat digunakan sebagai pengurai, pupuk hayati, pestisida organik, dan aktivator pengomposan. Proses produksi mikroorganisme lokal (MOL) diawali dengan tahap persiapan alat dan bahan, dilanjutkan dengan tahap fermentasi bahan, dan tahap penyaringan hasil akhir produk.
Co-Authors Adhitya Dharmawan Adrian Nur Agus Purwanto AGUS PURWANTO Al Fuady, Muhammad Iqbal Anisa Raditya Nurohmah Ari Diana Susanti Asto Putro, Firman Atika Aulia Novita Sari Aulina Rohmah, Binti Diajeng Putri Suciutami Endah Retno Dyartanti Enni Apriliyani Firstandika, Leader Griyasti Suci, Windhu Hanida Nilasary Hartoto Nursukatmo Hendri Widiyandari Himmah Sekar Eka Ayu Gustiana Inayati Inayati Linggar Tungga Gupita Luthfi Mufidatul Hasanah Luthfi Mufidatul Hasanah Luthfi Mufidatul Hasanah Meidiana Arinawati Miftakhul Hakam Nur Shohih, Esa Paryanto Salma Khansani , Afanindya Shofirul Sholikhatun Nisa Soraya Ulfa Muzayanha Soraya Ulfa Muzayanha Soraya Ulfa Muzayanha Tika Paramitha Windhu Griyasti Suci Wusana Agung Wibowo, Wusana Agung