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All Journal Jurnal Presipitasi : Media Komunikasi dan Pengembangan Teknik Lingkungan Indonesian Journal of Chemistry JKPK (Jurnal Kimia dan Pendidikan Kimia) Equilibrium Journal of Chemical Engineering

Cornelius Satria Yudha

Program Studi D3 Teknik Kimia, Sekolah Vokasi, Universitas Sebelas Maret

Author-ID : 5695341

Agriculture, Biological Sciences & Forestry Chemical Engineering, Chemistry & Bioengineering Chemistry Earth & Planetary Sciences Energy Engineering Materials Science & Nanotechnology

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Application of Biogas Production Technology from Various Feedstocks on Small-Medium-Micro Enterprises: A Case Study Ari Diana Susanti; Cornelius Satria Yudha; Leader Firstandika; Paryanto Paryanto; Wusana Agung Wibowo
Equilibrium Journal of Chemical Engineering Vol 2, No 2 (2018): Volume 2 No 2 July 2018
Publisher : Program studi Teknik Kimia UNS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/equilibrium.v2i2.40433

Biogas production process is an alternative method to reduce dependency on non-renewable fossil-based energy consumption and also can reduce greenhouse gases production both domestically and industrially. The existing biogas technology is suitable to be adapted in small-micro-medium enterprises and domestics, specifically for those who raise cattle. The case study was performed by observation of biogas production with various wastes as feed, namely cow dung, quail manure, and wastewater of tofu production. The study conducted via direct interviews with stake holders and visitations to the instalations. Based on our observation, biogas production from cow dung exhibits the shortest retention time compared to the others, aside from the value of C/N ratio of the biogas feedstocks. The presence of biogas production installations are significantly reducing the energy supplies among the users. Beside as biogas product, the instalations also produce solid and liquid fertilizers as by-products and have relatively high economic value. Socio – engineering problems based on the application of biodigester are also studied.

Sintesis dan Analisis Struktur Prekursor NMC811 dari Mix Hydroxide Precipitate (MHP) dengan Presipitan Asam Oksalat Miftakhul Hakam; Adhitya Dharmawan; Meidiana Arinawati; Agus Purwanto; Cornelius Satria Yudha
Equilibrium Journal of Chemical Engineering Vol 5, No 2 (2021): : Volume 5 No 2 December 2021
Publisher : Program studi Teknik Kimia UNS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/equilibrium.v5i2.58478

ABSTRAK. Studi mengenai struktur kristal suatu material sangat penting dalam mengetahui baik tidaknya material, terutama untuk aplikasi teknologi penyimpanan energi listrik seperti baterai ion litium. Semakin murni dan baik suatu struktur kristal material, maka semakin baik efisiensinya dalam menjadi bahan baku material katoda baterai. Tujuan dari penelitian ini adalah sintesis dan analisis karakteristik struktur kristal prekursor NMC811 oksalat (Ni0,8Mn0,1Co0,1C2O4) dari senyawa Mixed hydroxide precipitate atau MHP dengan presipitan asam oksalat. Sintesis prekursor NMC811 dilakukan dengan mereaksikan MHP (Ni 51,43% wt) dengan asam asetat agar diperoleh larutan nikel asetat. Sejumlah garam kobalt dan mangan ditambahkan kedalam larutan sehingga komposisi nikel:kobalt:mangan senilai 8:1:1. Endapan prekursor diperoleh dengan penambahan presipitan larutan asam oksalat. Endapan prekursor yang berhasil diisolasi dianalisis dengan X-ray diffractometer (XRD) untuk evaluasi struktur kristalnya. Berdasarkan analisis XRD MHP memiliki puncak difraksi yang kurang tajam dengan lebar pita yang relative besar sehingga menandakan bahwa MHP memiliki sifat kristal yang buruk. Sementara itu, Prekursor NMC811 oksalat memiliki puncak difraksi yang tajam. Hal ini membuktikan prekursor memiliki sifat kristal yang baik dengan kemurnian yang tinggi. Oleh karena itu, Prekursor NMC811 oksalat dengan bahan baku MHP dapat digunakan untuk bahan baku material katoda baterai ion litium tipe NMC811. ABSTRACT. The study of the crystal structure of a material is very important in knowing whether or not the material is good, especially for the application of electrical energy storage technology such as lithium ion batteries. The purer and better the crystal structure of a material, the better its efficiency in becoming a battery cathode raw material. The purpose of this study was to synthesize and analyze the characteristics of the crystal structure of the precursor NMC811 oxalate (Ni0,8Mn0,1Co0,1C2O4) from Mixed hydroxide precipitate or MHP with oxalic acid as a precipitate. NMC811 precursor was synthesized by reacting MHP (Ni 51.43% wt) with acetic acid to obtain a nickel acetate solution. A number of cobalt and manganese salts are added to the solution so that the nickel:cobalt:manganese composition is 8:1:1. The precursor precipitate was obtained by adding oxalic acid solution as a precipitate. The isolated precursor precipitate was analyzed by X-ray diffractometer (XRD) to evaluate its crystal structure. Based on XRD analysis, MHP has a diffraction peak that is less sharp with a relatively large bandwidth, indicating that MHP has poor crystalline properties. Meanwhile, NMC811 oxalate precursor has a sharp diffraction peak. This proves the precursor has good crystalline properties with high purity. Therefore, the NMC811 oxalate precursor with MHP raw material can be used as the cathode material for the lithium ion battery type NMC811.

Analisis Morfologi Prekursor NMC811 dari Mix Hydroxide Precipitate (MHP) dengan Presipitan Asam Oksalat Adhitya Dharmawan; Miftakhul Hakam; Meidiana Arinawati; Cornelius Satria Yudha; Agus Purwanto
Equilibrium Journal of Chemical Engineering Vol 5, No 2 (2021): : Volume 5 No 2 December 2021
Publisher : Program studi Teknik Kimia UNS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/equilibrium.v5i2.58474

ABSTRAK. Morfologi material merupakan salah satu aspek yang berpengaruh pada kualitas material katoda baterai Li-ion atau LIBs, salah satunya material katoda LiNi0,8Mn0,1Co0,1O2 atau NMC811. Semakin baik distribusi ukuran dan butiran partikel, maka semakin baik pula kualitas dari produk akhir NMC811. Penelitian ini bertujuan untuk sintesis dan analisis prekursor NMC811 (Ni0,8Mn0,1Co0,1C2O4) dengan mixed hydroxide precipitate atau MHP sebagai sumber Ni. Pada penelitian ini, prekursor NMC811 oksalat diperoleh dengan melarutkan MHP, CoSO4 dan MnSO4 pada larutan asam asetat. Larutan yang terbentuk dipresipitasi dengan asam oksalat sehingga membentuk endapan prekursor NMC811 oksalat. Instrumen pengujian SEM-EDX digunakan dalam mengevaluasi karakteristik morfologi sampel. Studi komparasi morfologi prekursor NMC811 dengan MHP juga dilakukan. prekursor Berdasarkan analisis komposisional menggunakan EDX, komposisi atom C, O, Mn, Co dan Ni secara berturut-turut 15,21±0.55%; 57,64±1.37%; 4,47±0.59%; 4,20±0.74%; dan18,48±1.71%. Sementara itu, analisis menggunakan SEM menunjukkan bahwa prekursor NMC811 memiliki bentuk dan ukuran partikel yang cenderung seragam dan lebih kompak dibandingkan MHP yang memiliki bentuk dan ukuran yang lebih bervariasi. Sintesis awal NMC811 dengan presipitan asam oksalat dapat meningkatkan keseragaman morfologi yang baik, sehingga nantinya dapat dihasilkan produk akhir NMC811 yang baik pula. ABSTRACT. Material morphology is one aspect that affects the quality of the cathode material for Li-ion batteries or LIBs, one of which is LiNi0,8Mn0,1Co0,1O2 or NMC811 cathode materials. The better the particle size and grain distribution, the better the quality of the final NMC811 product. This study aimed to synthesize and analyze the precursor of NMC811 (Ni0,8Mn0,1Co0,1C2O4) with mixed hydroxide precipitate or MHP as the source of Ni. In this study, NMC811 oxalate precursor was obtained by dissolving MHP, CoSO4 and MnSO4 in acetic acid or lactic acid solution. The solution formed was precipitated with oxalic acid to form a precursor precipitate of NMC811 oxalate. The SEM-EDX test instrument was used to evaluate the morphological characteristics of the samples. A comparative study of the morphology of the NMC811 precursor with MHP was also carried out. precursors Based on the compositional analysis using EDX, the atomic compositions of C, O, Mn, Co and Ni were 15.21±0.55%, respectively; 57.64±1.37%; 4.47±0.59%; 4.20±0.74%; and 18.48±1.71%. Meanwhile, analysis using SEM showed that the NMC811 precursor had a particle shape and size that tended to be uniform and more compact than MHP which had a more varied shape and size. The initial synthesis of NMC811 with oxalic acid precipitant can improve the good morphological uniformity, so that later, a good final product of NMC811 can be produced.

Effect of Heating on the Pretreatment Process for Recycling Li-Ion Battery Cathode Soraya Ulfa Muzayanha; Cornelius Satria Yudha; Luthfi Mufidatul Hasanah; Adrian Nur; Agus Purwanto
JKPK (Jurnal Kimia dan Pendidikan Kimia) Vol 4, No 2 (2019): JKPK ( Jurnal Kimia dan Pendidikan Kimia)
Publisher : Program Studi Pendidikan Kimia FKIP Universitas Sebelas Maret

The use of Li-ion batteries has increased with the increasing of portable electronic media. Li-ion batteries have a life cycle hence a recycling process is needed in order to reduce the potential hazard of waste while increasing the economic value of unused battery material, especially its cathode active material. This study used Lithium Nickel Cobalt Oxide (NCA) cathode scrap to be regenerated which NCA material has high energy density and high capacity. The pretreatment process is one of the determinants in the subsequent recycling process. In this study, the effect of heating on the pretreatment process was carried out with variation temperatures of 500-8000C to obtain powder which will be recycled. The combination process of the leaching and co-precipitation was used to regenerate the cathode active material. Atomic Absorption Spectrophotometry (AAS) was performed to determine leaching efficiency using 4M H2SO4 at 400C for 3 hours. X-ray Diffraction (XRD) analysis showed that NCA material has been successfully regenerated which the diffraction peaks of NCA material was in accordance with JCPDS standards. The morphology of NCA material was tested using Scanning Electron Microscopy (SEM). Electrochemical testing uses a cylindrical battery at 2.7-4.2 Volt which the initial specific discharge capacity of the power is 62.13 mAh / g.

Influence Comparison of Precursors on LiFePO4/C Cathode Structure for Lithium Ion Batteries Luthfi Mufidatul Hasanah; Cornelius Satria Yudha; Soraya Ulfa Muzayanha; Diajeng Putri Suciutami; Atika Aulia Novita Sari; Inayati Inayati; Agus Purwanto
JKPK (Jurnal Kimia dan Pendidikan Kimia) Vol 5, No 1 (2020): JKPK (Jurnal Kimia dan Pendidikan Kimia)
Publisher : Program Studi Pendidikan Kimia FKIP Universitas Sebelas Maret

Electricity is the most energy demanded in this era. Energy storage devices must be able to store long-term and portable. A lithium ion battery is a type of battery that has been occupied in a secondary battery market. Lithium iron phosphate / LiFePO4 is a type of cathode material in ion lithium batteries that is very well known for its environmental friendliness and low prices. LiFePO4/C powder can be obtained from the solid state method. In this study the variables used were the types of precursors : iron sulfate (FeSO4), iron oxalate (FeC2O4) and FeSO4+charcoal. Synthesis of LiFePO4/C powder using Li:Fe:P at 1:1:1 %mol. Based on the XRD results, LiFePO4/C from FeSO4+charcoal shows the LiFePO4/C peaks according to the JCPDS Card with slight impurities when compared to other precursors. XRD results of LiFePO4/C with precursors of FeSO4 or FeC2O4 shows more impurities peaks. This LiFePO4/C cathode is paired with lithium metal anode, activated by a separator, LiPF6 as electrolyte. Then this arrangement is assembled become a coin cell battery. Based on the electrochemical results, Initial discharge capacity of LiFePO4/C from the FeSO4 precursor is 19.72 mAh/g, while LiFePO4/C with the FeC2O4 precursor can obtain initial discharge capacity of 17.99 mAh/g, and LiFePO4/C with FeSO4+charcoal exhibit initial discharge capacity of 21.36 mAh/g. This means that the presence of charcoal helps glucose and nitrogen gas as reducing agents.

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

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

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%.

Recovery of Valuable Metals from Fly Ash via Hydrometallurgy Method for Li-ion Battery Anode Material Cornelius Satria Yudha; Enni Apriliyani; Tika Paramitha; Windhu Griyasti Suci; Himmah Sekar Eka Ayu Gustiana
JKPK (Jurnal Kimia dan Pendidikan Kimia) Vol 7, No 3 (2022): JKPK (Jurnal Kimia dan Pendidikan Kimia)
Publisher : Program Studi Pendidikan Kimia FKIP Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/jkpk.v7i3.64740

Coal-derived fly ash, or CFA, is a harmful waste for humans. CFA waste handling by its processing and utilization has become the most promising approach, which not only decreases the waste's hazard level but also improves its economic potential. This research aims to recover metals from CFA and utilize them as anode material for Li-ion batteries. Iron, magnesium, aluminum, and calcium are retrieved from the CFA via a two-step hydrometallurgical method, i.e., acid leaching followed by alkaline precipitation. The leaching process utilizes various acids, such as acetic acid (CH3COOH), hydrochloric acid (HCl) and sulfuric acid (H2SO4). Metal precipitation is carried out using sodium hydroxide solution (NaOH). Morphological and quantitative metal composition analysis are investigated using a scanning electron microscope and energy dispersive spectroscopy (SEM-EDX). The physical and chemical properties of the as-prepared samples are characterized using Fourier-transformed Infra-red spectroscopy (FTIR) and Thermal Gravimetry-Differential Thermal Analysis (TG/DTA). Based on the analysis, iron, magnesium and calcium are successfully recovered in a mixed hydroxide precipitate. The type of acid affects the final morphology and composition of the product. Therefore, our approach can be considered effective in CFA waste processing and producing high-quality product.

Meningkatkan Potensi Kewirausahaan dan Inovasi Produk di SMK N 1 Mojosongo Himmah Sekar Eka Ayu Gustiana; Ayub Mahmudi; Syahrul Aji Jayani; Cornelius Satria Yudha; Esa Nur Shohih; Firman Asto Putro; Muhammad Iqbal Al Fuady; Paryanto Paryanto; Windhu Griyasti Suci
Equilibrium Journal of Chemical Engineering Vol 6, No 2 (2022): Volume 6, No 2 December 2022
Publisher : Program studi Teknik Kimia UNS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/equilibrium.v6i2.65939

ABSTRAK. Kewirausahaan merupakan salah satu tuntutan kompetensi lulusan siswa di SMK Negeri 1 Mojosongo. Kompetensi tersebut menjadi salah satu indikator kualitas sumber daya manusia lulusan SMK. Tim Manajemen sekolah selalu berusaha meningkatkan kualitas sumber daya siswa dan tenaga pengajarnya. Salah satu terobosan yang dilakukan adalah bekerjasama dengan Prodi D3 Teknik Kimia Universitas Sebelas Maret untuk meningkatkan wawasan siswanya. Konsep kerjasama ini berupa transfer keilmuan yang dikemas dalam kegiatan pengabdian masyarakat. Kegiatan ini memiliki beberapa tahapan dimulai dari identifikasi masalah mitra yaitu perlunya pemahaman konsep kewirausahaan, business plan, pemodalan dana hibah, konsep desain dan inovasi produk dan pemasaran usaha. Pada tahap awal kegiatan siswa diminta mengikuti pretest untuk mengetahui tingkat mula pemahaman. Tahap kedua paparan materi kewirausahaan dan diskusi, tahap ketiga demo sekaligus praktik langsung pembuatan inovasi produk pangan dari buah nipah. Kegiatan diakhiri dengan post test dan testimoni hasil kegiatan. Dari kegiatan yang telah dilakukan, menunjukkan hasil bahwa terdapat peningkatan pemahaman peserta tentang kewirausahaan dan inovasi produk menggunakan teknologi sederhana. Kata kunci: Kewirausahaan, inovasi pangan, nipah, sirupABSTRACT. Entrepreneurship is one of the required competencies for students' graduation at SMK Negeri 1 Mojosongo. Thus, this competency is one of the indicators to determine the quality of graduates from SMK N 1 Mojosongo. The School management has been trying to improve the quality of students and teaching staff. Collaboration between SMK N 1 Mojosongo and Diploma 3 of the Chemical Engineering Study Program of Universitas Sebelas Maret is one of the breakthroughs to increase students' insight. The concept of this collaboration is in the form of knowledge transfer which is packaged in community service activities. This activity begins with identifying the problems experienced by partners such as the need to understand the concept of entrepreneurship, business plans, grant funding, design concepts, product innovation, and business marketing. Before the main agenda begins, students are asked to take a pretest to determine their initial level of understanding. After a presentation on entrepreneurship, the students practice making food product innovations from Nypa fruticans. Finally, the students took the post-test and gave testimonials on the results of the activities. The results of this activity indicate that there is an increase in participants' understanding of entrepreneurship and product innovation with simple technology.Keywords: Food innovation, nypa fruticans, entrepreneurship, syrup

Calcination of Various Eggshell Wastes into CaO Heterogeneous Catalysts Dona Kurniawati Dewi; Vira Mawardha Putri; Vita Febriyanti; Cornelius Satria Yudha
Equilibrium Journal of Chemical Engineering Vol 7, No 1 (2023): Volume 7, No 1 July 2023
Publisher : Program studi Teknik Kimia UNS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/equilibrium.v7i1.74484

Abstract. The high food industry waste can cause pollution including a pungent odor and the emergence of bacteria that cause disease. Egg shells are confectionery waste that is commonly found in household waste and the food industry. The accumulation of eggshell waste can cause various diseases such as abdominal pain, diarrhea, fever, and cramps in the stomach caused by Salmonella bacteria. Thus, further processing of egg shells is required. In this study, eggshell waste was processed into heterogeneous catalysts of CaO. This heterogeneous CaO catalyst has the potential to be used as a catalyst in the manufacture of biodiesel. In this process, egg shells are processed by the calcination method. The variables used are shell type and calcination temperature. The shell variables used were chicken egg shells, duck egg shells, and quail egg shells. While the temperature variables used are at temperatures of 600 ºC and 800 ºC. To determine the quality of heterogeneous CaO catalyst, characteristic tests were varied out in the form of SEM-EDX and FTIR. From the analysis, the most effective results were in the form of chicken eggshell variables at a calcination temperature of 800 ºC.Keywords:Calcination, CaO, Catalyst, Shell, Waste

Co-Authors Adhitya Dharmawan Adrian Nur Agus Purwanto Agus Purwanto Anisa Raditya Nurohmah Ari Diana Susanti Atika Aulia Novita Sari Ayub Mahmudi Bintari Astika Diajeng Putri Suciutami Dona Kurniawati Dewi Endah Retno Dyartanti Enni Apriliyani Erica Puspita Sari Esa Nur Shohih Firman Asto Putro Firstandika, Leader Fisafillah Al Mumtahinah Fransisca Poppy Amelia Hafiz Norman 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 Muhammad Alhadilansa Salsabil Muhammad Iqbal Al Fuady Natasya Dian Andini Paryanto Paryanto Paryanto Paryanto Purwanto, Agus Shofirul Sholikhatun Nisa Soraya Ulfa Muzayanha Soraya Ulfa Muzayanha Soraya Ulfa Muzayanha Syahrul Aji Jayani Tika Paramitha Vira Mawardha Putri Vita Febriyanti Windhu Griyasti Suci Windhu Griyasti Suci Wusana Agung Wibowo, Wusana Agung Yuliana Prasetiyani

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