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All Journal International Journal of Power Electronics and Drive Systems (IJPEDS) Eksergi: Chemical Engineering Journal Journal of Engineering and Technological Sciences ALCHEMY Jurnal Penelitian Kimia Indonesian Journal of Chemistry Kumawula: Jurnal Pengabdian Kepada Masyarakat Equilibrium Journal of Chemical Engineering
Arif Jumari
Sebelas Maret University
Chemical Engineering, Chemistry & Bioengineering Chemistry Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Social Sciences

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A Monitoring System of Battery LiFePO4 for Assessment Stand-Alone Street Light Photovoltaic System Based on LabVIEW Interface for Arduino Anif Jamaluddin; Anafi Nur’aini; Arif Jumari; Agus Purwanto
International Journal of Power Electronics and Drive Systems (IJPEDS) Vol 8, No 2: June 2017
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijpeds.v8.i2.pp926-934

Abstract

The paper presents monitoring and assessment system of battery LiFePO4 performance that applied on a stand-alone photovoltaic system. A stand-alone photovoltaic system is constructed by photovoltaic module 50 Watt Peak, Pulse Width Modulation solar controller, battery module LiFePO4 battery (12 Volt 21 Ah), and street light 10 watt. To overcome the data acquisition, a simple monitoring system has been designed using LabVIEW Interface for Arduino. The voltage divider, current sensing type ACS712, temperature and humidity sensor, and light intensity sensor were used to collect the data. The data processed by a dual microcontroller (ATmega-2560 and ATmega-328) and LabVIEW software on Personal Computer. The assessment of stand-alone photovoltaic system includes battery LiFePO4 performance (State of Charge, voltage, and current) during charging and discharge condition, the power efficiency, and environmental condition (temperature, humidity and solar radiation). In the discharge condition, voltage battery and State of Charge decreased about 40% after 12 hours operated. In the charge condition, the current battery fluctuated in the range of 0.10 A-1.95 A and the State of Charge increased up to 25% after 8 hours operated. It indicates that the power of the battery has always lacked.
PENGARUH KONSENTRASI ABSORBEN (Fe-EDTA) TERHADAP PENURUNAN KANDUNGAN H2S DALAM BIOGAS PADA LAJU ALIR UDARA REGENERASI YANG BERBEDA Endang Kwartiningsih; Arif Jumari; Adrian Nur; Danu Nugroho; Umi Sarwanti; Slamet Sapto; Endah Ari
Eksergi Vol 9, No 1 (2008): Versi Cetak
Publisher : Prodi Teknik Kimia, Fakultas Teknologi Industri, UPN "Veteran" Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31315/e.v9i1.7553

Abstract

Bíogas is very potential to be used as fuel because of its high content of methane. Biogas had also been developed and used by several industries as alternative fuels to substitute mineral oil, The disadvantage of biogas as fuel was its high content of hydrogen sulfide which is potentíal to pollute the ervironment. Because of this, biogas should be purified first before being used as fuel. Generally, the content of H2S can bereduced physically, chemically or biologically methods, but these methods have many disadvantages. Biogas purílìcation(also other gases) from the content of H2S using Fe-EDTA(Iron Chelated Solution) gave several advantages. The advantages were the absorbent solution can be regenerated that means a cheap operation cost, the separated sulfur was asolid (that is an economic commodity) or resídue that is easy to handle and is save to be disposal to environment. Iron Chelated Solutionwas made by solving the substance of salted iron to EDTA solution. The salt of FeCl2, was made by solving iron waste obtained from lathe machine to hydrochloric acid solution. The research of reduction of the content of H2S in biogas was conducted by contacting Fe-EDTA solution with biogas in an absorber column of 1 m height and 0. I m diameter The rich H2S solution from absorber was then flowed to the separator column to separate the solid of sulfur and its solution. The solution from separator column was then regenerated by oxidation in regenerator column. In regenerator column solution which is rich of iron reacted with oxygen from air to be Fe3. . The solution which is rich of Fe was then used again to absorb H2S in biogas. Biogas used during experiment was obtained from PT Indo Acidatama Tbk. The content of H2S in raw biogas was 2.8235 %. The result of the research showed that the concentration of absorbent influenced the reduction of the content of H2S. Absorbent solution with concentration of 0.2 M of Fe-EDTA was able to absorb 99 % of all H2S from 2.8235 % to 0.02 % in a column of I m height and 0.1 m diameter Absorbent solution with concentratíon of 0.1 M of Fe-EDTA was only able to absorb 59% of all H2S from 2.8235% to 1.2 %. The regeneration air flow rate also influence the reduction of the content of H2S in biogas. The higher the regeneration airflow rate the higher the reduction of the content of H2S.
A Comparative Study of Solid-State and Co-precipitation Methods for Synthesis of NMC622 Cathode Material from Spent Nickel Catalyst Endah Retno Dyartanti; Tika Paramitha; Arif Jumari; Agus Purwanto; Adrian Nur; Anatta Wahyu Budiman; Shofirul Sholikhatun Nisa
Journal of Engineering and Technological Sciences Vol. 55 No. 5 (2023)
Publisher : Directorate for Research and Community Services, Institut Teknologi Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5614/j.eng.technol.sci.2023.55.5.4

Abstract

Nickel, the main raw material for lithium-ion batteries (LIB), is currently the most in-demand metal. The rising need for nickel and current environmental concerns have underscored the importance of recycling waste metal to recover its value. Meanwhile, a significant secondary source with a high metal value is spent catalyst. In this context, the acid leaching method was used to recover nickel from spent catalyst. This study aimed to synthesize Lithium Nickel Manganese Cobalt Oxide 622 (NMC622) from spent catalyst. To determine the optimal method, a comparative analysis was conducted between solid-state and co-precipitation methods. Recycled spent nickel catalyst to be used for cathode material was examined by analytical methods, i.e., XRD, FTIR, SEM-EDX, and electrochemical performance testing. The XRD, FTIR, and SEM-EDX tests produced similar outcomes, consistent with previous reports. However, in the electrochemical test, the co-precipitation method showed a specific capacity two times higher than the solid-state method. The NMC622 from the co-precipitation method (NMC622-CP) yielded a specific discharge capacity of 132.82 mAh.g-1 at 0.1C, while the retention capacity was 70% for 50 cycles at 0.5C.
PELATIHAN PEMBUATAN BATTERY PACK BERBASIS BATERAI LITHIUM ION BAGI SISWA SMK RAUDLOTUL HUDA MAGETAN Jumari, Arif; Dyartanti, Endah Retno; Purwanto, Agus; Nur, Adrian; Budiman, Anatta Wahyu; Paramitha, Tika
Kumawula: Jurnal Pengabdian Kepada Masyarakat Vol 7, No 1 (2024): Kumawula: Jurnal Pengabdian Kepada Masyarakat
Publisher : Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/kumawula.v7i1.50393

Abstract

Perkembangan dunia otomotif di Indonesia semakin pesat, sehingga emisi dari sektor transportasi sangat tinggi. Salah satu solusi untuk mengurangi emisi adalah produksi listrik dari sumber energi terbarukan seperti air, angin, matahari, dan panas bumi. Hal ini mendorong perkembangan kendaraan listrik semakin meningkat pesat dari sektor transportasi. Pemerintah juga mendukung pertumbuhan industri baterai dan kendaraan listrik di Indonesia. Upaya untuk mendukung program pemerintah tersebut adalah menyiapkan sumber daya manusia (SDM) yang kompeten di bidang kendaraan listrik melalui kegiatan pelatihan komponen kendaraan listrik, khususnya battery pack. Sekolah Menengah Kejuruan (SMK) harus cepat beradaptasi dalam menghadapi perkembangan teknologi tersebut, sehingga SMK dengan Program Keahlian Teknik Bisnis Sepeda Motor dan Teknik Kendaraan Ringan Otomotif hendaknya mencetak lulusan yang kompeten dalam pembuatan battery pack yang diaplikasikan pada kendaraan listrik. Oleh karena itu, pengabdian masyarakat dilakukan di SMK Roudlotul Huda Magetan mengenai pelatihan pembuatan battery pack berbasis baterai lithium ion. Pada awal kegiatan, siswa dibekali materi mengenai baterai lithium ion dan battery pack. Selanjutnya, siswa melakukan praktik untuk perangkaian baterai (welding) dan pemasangan casing. Berdasarkan hasil pre-test dan post-test, siswa mengalami peningkatan pemahaman mengenai battery pack. The development of the automotive sector in Indonesia is increasing rapidly, so emissions from the transportation sector are very high. One solution to reduce emissions is the production of electricity from renewable energy sources such as air, wind, sun, and geothermal. This encourages the development of electric vehicles rapidly in the transportation sector. The government also supports the growth of the battery and electric vehicle industry in Indonesia. Efforts to support this government program are by preparing competent human resources (HR) in the field of electric vehicles through training activities on electric vehicle components, especially battery packs. Vocational High Schools (SMK) must quickly adapt to these technological developments, so Vocational Schools with Teknik Bisnis Sepeda Motor and Teknik Kendaraan Ringan Otomotif Skills Programs should produce graduates who are competent in making battery packs that are applied to electric vehicles. Therefore, community service was carried out at Roudlotul Huda Magetan Vocational School regarding training in making battery packs from lithium-ion batteries. At the start of the activity, students were provided with material regarding lithium-ion batteries and battery packs. Next, students practice battery assembly (welding) and casing installation. Based on the pre-test and post-test results, students experienced an increased understanding of battery packs.
A Comparative Study of LiNCA Cathode Recycled from Spent Lithium-Ion Batteries and Synthesized from Metal Precursor Jumari, Arif; Apriliani, Enni; Yudha, Cornelius Satria; Purwanto, Agus; Syahrial, Anne Zulfia; Pita Rengga, Wara Dyah
Indonesian Journal of Chemistry Vol 24, No 6 (2024)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ijc.98276

Abstract

Spent lithium NCA (LiNCA) battery was recycled using organic and inorganic acids and the performances were compared against the cathode synthesized from precursor. The metals in the spent cathode were leached using sulfuric or citric acid and coprecipitated into ternary metal oxalate (TMO) after reduction and lithium separation. Subsequently, the coprecipitated solution was used for cathode synthesis. Leaching efficiencies for nickel, cobalt and aluminum using citric acid were 85.6, 94.1, and 99%, respectively, while the efficiencies using sulfuric acid were 96, 98, and 100%, respectively. TMO produced from coprecipitation had the same physical characteristics. It was important to acknowledge that all cathodes also had similar physical characteristics. The electrochemical tests showed that commercial cathodes had the highest capacity of 150 mAh/g. This was followed by those from precursors, sulfuric acid leaching, and citric acid leaching, which recorded 142, 135, and 130 mAh/g, respectively. Based on the cycle test at 1C, the sample from citric acid leaching was 86% after 20 cycles compared to others at 82–83%. The results suggested that spent LiNCA could be regenerated into new cathodes using acid with performance comparable to those synthesized from precursor. This presented a viable alternative for LiNCA cathode synthesis.
Sintesis Material Katoda LiNi0,8Mn0,1Co0,1O2 (NMC811) dengan Metode Solid State Menggunakan Nikel Hasil Perolehan Kembali dari Spent Nickel Catalyst Hendri Widiyandari; Rizqia Afifatu Latifah; Arif Jumari; Cornelius Satria Yudha; Shofirul Sholikhatun Nisa
ALCHEMY Jurnal Penelitian Kimia Vol 18, No 2 (2022): September
Publisher : UNIVERSITAS SEBELAS MARET (UNS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/alchemy.18.2.63035.214-220

Abstract

Penelitian mengenai sintesis material katoda LiNi0,8Mn0,1Co0,1O2 (NMC811) menggunakan nikel hasil perolehan kembali dari spent nickel catalyst telah berhasil dilakukan menggunakan metode solid state dengan variasi perbandingan padatan spent nickel catalyst/larutan (padatan/larutan) yang digunakan untuk leaching spent nickel catalyst sebesar (20 g/L, 30 g/L, dan 40 g/L). Proses leaching dilakukan menggunakan asam laktat 2 M selama 3 jam dengan suhu 80 ℃. Hasil dari proses ini adalah filtrat nikel laktat dengan endapan sebanyak 1,50 gram, 6,10 gram, dan 9,26 gram. Dalam filtrat tersebut terdapat ikatan hidroksida dan ikatan asam karboksilat. Material katoda NMC811 yang terbentuk memiliki enam puncak difraksi. Puncak difraksi X-ray tertinggi terdapat pada 2 theta 15° ‒ 20° dan 44°. Morfologi permukaan dari material katoda NMC811 menunjukkan terbentuknya partikel yang irregular dengan ukuran yang tidak seragam. Komposisi material katoda menunjukkan bahwa katoda NMC811 berhasil diperoleh dengan kandungan nikel sebanyak 73% ‒ 79%, mangan sebanyak 9% ‒ 13% dan kobalt sebanyak 10% ‒ 13%. Baterai lithium-ion yang dibuat menggunakan katoda NMC811 tersebut memiliki kapasitas masing-masing dengan variasi 20g/L sebesar 15,09 mAh/g, 30 g/L sebesar 28,42 mAh/g dan 40 g/L sebesar 25,57 mAh/g. Synthesis of LiNi0,8Mn0,1Co0,1O2 (NMC811) Cathode Material by Solid State Method Using Nickel Recovered from Spent Nickel Catalyst. Research on the synthesis of NMC811 cathode using nickel recovered from spent nickel catalyst was successfully carried out using the solid-state method with various ratios of solids spent nickel catalyst/solution used for leaching spent nickel catalyst (20 g/L, 30 g/L, and 40 g/L). The leaching process was carried out using 2 M lactic acid for 3 hours at a temperature of 80℃. The result of this process is lactic nickel filtrate with a precipitate of 1.50 grams, 6.10 grams, and 9.26 grams. There are hydroxide bonds and carboxylic bonds in the filtrate. The NMC811 cathode material formed has six diffraction peaks. The highest X-ray diffraction peak is at 2-theta of 15° ‒ 20° and 2-theta of 44°. The surface morphology of the NMC811 cathode material shows the formation of several lumps of non-uniform size. The composition of the cathode material shows that the NMC811 cathode has a nickel content of 73% ‒ 79%, manganese of 9% ‒ 13%, and cobalt of 10% ‒ 13%. The lithium-ion battery made using the NMC811 cathode has a capacity of 20g/L at 15.09 mAh/g, 30 g/L at 28.42 mAh/g, and 40 g/L at 25.57 mAh/g.
Training of Electric Bike Assembly with Lithium Batteries at SMK Muhammadiyah 6 Karanganyar Paramitha, Tika; Dyartanti, Endah Retno; Widiyandari, Hendri; Jumari, Arif; Nur, Adrian; Inayati, Inayati; Budiman, Anatta Wahyu; Purwanto, Agus
Equilibrium Journal of Chemical Engineering Vol 5, No 1 (2021): Volume 5, No 1 July 2021
Publisher : Program studi Teknik Kimia UNS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/equilibrium.v5i1.53965

Abstract

With the increasing development of the battery and electric vehicle industry, student's and teacher's understanding of lithium batteries and skills in assembling electric bikes are very important in competing for jobs in these fields. Educational activities regarding batteries and training on assembling electric bike are carried out at SMK Muhammadiyah 6 Karanganyar, because there were no facilities that support the learning and teaching process about electric vehicles and batteries. The method used in this training is lecture, discussion and practice method. The material presented was about the technology of making lithium batteries and electric bike components. While practical activities include the stages of converting conventional bikes into electric bikes with energy from lithium batteries. This activity shows that participants can understand batteries and can apply batteries to electric vehicles, especially electric bikes.
Peningkatan Kompetensi Siswa SMK Muhammadiyah 4 Surakarta mengenai Industri Baterai Lithium Ion Paramitha, Tika; Dyartanti, Endah Retno; Jumari, Arif; Purwanto, Agus; Nur, Adrian; Budiman, Anatta Wahyu
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.v6i2.66334

Abstract

ABSTRAK. Sekolah Menengah Kejuruan (SMK) Muhammadiyah 4 Surakarta memiliki jurusan Kimia Industri yang mempersiapkan tenaga terampil di industri kimia untuk mendukung dalam pengembangan teknologi. Salah satu Industri Kimia yang berkembang saat ini adalah Industri Baterai Lithium Ion (LIB). LIB saat ini digunakan tidak hanya pada perangkat elektronik portabel, seperti komputer dan telepon seluler, tetapi juga untuk kendaraan listrik atau kendaraan hybrid. Oleh karena itu, lulusan SMK dengan Program Keahlian Kimia Industri hendaknya menyiapkan lulusan yang mempunyai kompetensi di bidang teknologi baterai. Dengan kompetensi dosen dalam teknologi produksi material aktif baterai pada skala mini plant dan fasilitas yang mewadai di Pusat Unggulan IPTEK (PUI) PT Teknologi Penyimpanan Energi Listrik, maka sangat memungkinkan dosen untuk mengenalkannya kepada siswa SMK Muhammadiyah 4 Surakarta. Metode yang dilakukan dalam pelatihan ini adalah metode ceramah, diskusi dan praktik. Adapun materi yang disampaikan mengenai baterai lithium ion (aplikasi, jenis, tipe, struktur, proses pembuatan material aktif, dan fabrikasi). Kegiatan praktik yang dilakukan yaitu praktik pembuatan material aktif katoda dengan metode ko-presipitasi dan fabrikasi sel baterai. Hasil kegiatan ini adalah kompetensi siswa dan guru meningkat yang ditunjukkan dengan nilai Pre-Test yang lebih baik dibandingkan dengan Post-Test.Kata kunci: Baterai Lithium Ion, SMK, KatodaABSTRACT. Muhammadiyah 4 Surakarta Vocational High School has a Department of Industrial Chemistry which prepares skilled workers in the chemical industry to support the development of technology. One of the chemical industries that is currently developing is the Lithium Ion Battery (LIB) industry. LIBs are currently used not only in portable electronic devices, such as computers and cell phones but also for electric vehicles or hybrid vehicles. Therefore, Vocational High School with an industrial chemistry expertise program should prepare students who graduate to have competence in the field of battery technology. With the competence of lecturers in the production technology of battery active materials on a mini plant scale and adequate facilities at the Center of Excellence for Electrical Energy Storage Technology, it is very possible for lecturers to introduce technology and battery production facilities to students of Muhammadiyah 4 Surakarta Vocational High School. The methods used in this training are lecture, discussion and practice methods. The material presented was about LIB (application, type, type, structure, active material manufacturing process, and fabrication). The practical activities carried out are the practice of making cathode active materials with the co-precipitation method and battery cell fabrication. The result of this activity is that the competence of students and teachers increases as indicated by a better Pre-Test score compared to the Post-Test score.Keywords: Lithium Ion, SMK, Cathode
Co-Authors Adrian Nur Adrian Nur Adrian Nur AGUS PURWANTO Agus Purwanto Agus Purwanto Anafi Nur’aini Anatta Wahyu Budiman Anif Jamaluddin Anne Zulfia Apriliani, Enni Budiman, Anatta Wahyu Cornelius Satria Yudha Danu Nugroho Endah Ari Endah Retno Dyartanti Endah Retno Dyartanti, Endah Retno Endang Kwartiningsih Fatona Wahyu Pandi Hastuti Fauziatul Fajaroh Hendri Widiyandari Hendri Widiyandari Inayati Inayati Meida Dewanti Nazriati Nazriati dkk. Rizqi Triananda Rizqia Afifatu Latifah Shofirul Sholikhatun Nisa Shofirul Sholikhatun Nisa Slamet Sapto Tika Paramitha Tika Paramitha Titis Dhian Novita Umi Sarwanti Wara Dyah Pita Rengga Yudha, Cornelius Satria