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All Journal Jurnal Rekayasa Proses Jurnal Sains dan Teknologi CHEMICA Jurnal Teknik Kimia Seminar Nasional Teknik Kimia Kejuangan Program Kreativitas Mahasiswa - Kewirausahaan Journal of Tropical Biodiversity and Biotechnology Journal of Geoscience, Engineering, Environment, and Technology Metal Indonesia Indonesian Journal of Chemistry Buletin Sumber Daya Geologi Jurnal Rekayasa Proses Prosiding Seminar Nasional Sains dan Teknologi Terapan Metalurgi INSIST (International Series on Interdisciplinary Research) International Journal of Applied Sciences and Smart Technologies ASEAN Journal of Chemical Engineering Indonesian Journal on Geoscience Indonesian Journal on Geoscience REACTOR : Journal of Research On Chemistry And Engineering ARTCHIVE: Indonesia Journal of Visual Art and Design Jurnal Ilmiah Berkala: Sains dan Terapan Kimia Proceeding ISETH (International Summit on Science, Technology, and Humanity) Metalurgi Bulletin of Chemical Reaction Engineering & Catalysis Jurnal Rekayasa Proses

Himawan Tri Bayu Murti Petrus

Departemen Teknik Kimia, Fakultas Teknik, Universitas Gadjah Mada, Jl Grafika No. 2 Kampus UGM, Yogyakarta, 55281

Author-ID : 528449

Agriculture, Biological Sciences & Forestry Arts Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Earth & Planetary Sciences Economics, Econometrics & Finance Education Energy Engineering Environmental Science Immunology & microbiology Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Mechanical Engineering Medicine & Pharmacology Physics Social Sciences Other

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Perayaan 15 tahun Jurnal Rekayasa Proses Himawan Tri Bayu Murti Petrus
Jurnal Rekayasa Proses Vol 16, No 1 (2022)
Publisher : Departemen Teknik Kimia Fakultas Teknik Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jrekpros.76441

Celebrating fifteen years of Jurnal Rekayasa Proses Himawan Tri Bayu Murti Petrus
Jurnal Rekayasa Proses Vol 16, No 1 (2022)
Publisher : Departemen Teknik Kimia Fakultas Teknik Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jrekpros.76442

Preliminary Study of WebGIS Implementation on Monitoring and Evaluation of the Regional Action Plan for Reduction and Elimination of Mercury Use (RAD-PPM) Esti Kukuh Perbawati; Taufik Hery Purwanto; Himawan Tri Bayu Murti Petrus; Wahyu Yun Santoso
Proceeding ISETH (International Summit on Science, Technology, and Humanity) 2021: Proceeding ISETH (International Summit on Science, Technology, and Humanity)
Publisher : Universitas Muhammadiyah Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1978.211 KB)

Presidential Regulation Number 21 of 2019 concerning the National Action Plan for Mercury Reduction and Elimination (RAN-PPM) became the strategy for reduction and elimination of Mercury, then later revealed in the Regional Action Plan for Mercury Reduction and Elimination (RAD-PPM). According to it, a comprehensive monitoring method is urgently needed, neither only related to the elimination of mercury in the ASGM sector, but also for regional development potential. This research is a Research and Development research, which is a type of research that aims to develop applications, which are used as a tool for decision making-a Decision Support System (DSS). Using a descriptive qualitative method, to analyse related documents, interviews with related actors, and calculate System Usability Scale to analyse and see the usability and the level of user acceptance to the WebGIS. The case study is the development and preparation of a WebGIS related to the ASGM sector in Kokap, Kulon Progo. The result of the study shows that an information system with geospatial-based analysis could facilitate data integration, implementation and monitoring of the regulation of mercury elimination, especially in the ASGM sector. As a result of the WebGIS System Usability Scale for Small-Scale Gold Mining in Kulon Progo Regency, it is included in the category of applications that can be accepted by users and is quite appropriate. Nevertheless, synergy and cooperation between various agencies are necessary. Moreover, the data related to socio-economic which is an important information system for regional development can also be mapped in a GIS.

Pengaruh Tegangan Operasi dan Konsentrasi Larutan Elektrolit terhadap Sintesis Timah(II) Sulfat dengan Metode Elektrolisis Himawan Tri Bayu Murti Petrus; Sutijan Sutijan; Vincent Sutresno Hadi Sujoto; I Wayan Christ Widhi Herman Tangkas; Slamet Sumardi; Widi Astuti
Jurnal Metal Indonesia Vol 44, No 2 (2022): Metal Indonesia
Publisher : Balai Besar Logam dan Mesin

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32423/jmi.2022.v44.42-50

Salah satu sumber daya mineral yang berperan penting dalam kehidupan masyarakat di dunia adalah timah. Sumber daya timah dapat diolah menjadi timah sulfat yang memiliki nilai jual dan manfaat yang lebih tinggi. Timah(II) sulfat digunakan dalam aplikasi industri dan manufaktur sebagai agen elektroplating dan produk perawatan permukaan logam. Permintaan timah sulfat di pasar global mengalami peningkatan yang signifikan. Beberapa metode produksi timah sulfat telah dikembangkan untuk meningkatkan kualitas sumber daya timah. Tujuan utama dari penelitian ini adalah untuk mengolah sumber daya timah dengan metode yang efektif dan ramah lingkungan yang terkait sintesis timah(II) sulfat dengan metode elektrolisis. Hasil penelitian menyimpulkan bahwa konsentrasi larutan elektrolit dan tegangan operasi sangat mempengaruhi sintesis timah(II) sulfat. Namun, variabel ini dibatasi oleh luas permukaan yang terbatas. Kondisi terbaik penelitian terjadi pada tegangan operasi 0,6V dan larutan elektrolit dengan konsentrasi 0,05 M.

SYNTHESIS AND CHARACTERIZATION OF NICKEL HYDROXIDE FROM EXTRACTION SOLUTION OF SPENT CATALYST Kevin Cleary Wanta; Felisha Hapsari Tanujaya; Federick Dwi Putra; Ratna Frida Susanti; Gelar Panji Gemilar; Widi Astuti; Himawan Tri Bayu Murti Petrus
Metalurgi Vol 35, No 3 (2020): Metalurgi Vol. 35 No. 3 Desember2020
Publisher : National Research and Innovation Agency (BRIN)

Nickel is an essential metal element and is applied in various sectors. One of the useful nickel–based derivatives products is nickel hydroxide [Ni(OH)2]. This compound is widely applied as raw material for electrodes of rechargeable batteries, capacitors, electrolyzers, and catalysts. This study focuses on the synthesis of Ni(OH)2 using the hydroxide precipitation method. A solution from the extraction process of spent catalysts was used as a precursor solution. After the precursor solution was obtained, the precipitation process was carried out at pH 10, where the operating temperature was varied at 30–60oC. NaOH, KOH, and MgO solutions were used as precipitating agents. The experimental results show that the Ni(OH)2 compounds were produced optimally at low temperatures, 30oC. It could be indicated from the lowest concentration of Ni2+ ions in the liquid phase that reached that temperature. The three precipitation agents also gave good results in the precipitation of Ni2+ ions, where almost all of the Ni2+ ions were precipitated from the liquid phase. The precipitated products were characterized using SEM, XRD, and XRF. The analysis results showed that the product was agglomerated and formless. The purity of the precipitates formed were 24.1 and 29% for the precipitating agents MgO and NaOH, respectively.

INCREASING OF METAL RECOVERY IN LEACHING PROCESS OF SPENT CATALYST AT LOW TEMPERATURE: THE ADDITION OF HYDROGEN PEROXIDE AND SODIUM CHLORIDE Kevin Cleary Wanta; Edward Yonathan Natapraja; Ratna Frida Susanti; Gelar Panji Gemilar; Widi Astuti; Himawan Tri Bayu Murti Petrus
Metalurgi Vol 36, No 2 (2021): Metalurgi Vol. 36 No. 2 Agustus 2021
Publisher : National Research and Innovation Agency (BRIN)

One of the factors that affect the leaching process of a mineral source is the mineral characteristics of the raw materials. Not all mineral phases can be leached directly and completely. Thus, some minerals require special treatment so that the leaching process can take place optimally. This study will focus on studying the effect of additive compounds addition, i.e. hydrogen peroxide and sodium chloride, in the leaching process of spent catalyst using a sulfuric acid solution. The leaching process was carried out at a concentration of 1 M sulfuric acid solution for 240 minutes at room temperature. The hydrogen peroxide concentration was varied at 0–9%v/v, while the sodium chloride concentration was varied at 0–0.8 mol/L. The experimental results showed that the two additive compounds were able to increase nickel recovery significantly. The highest nickel recovery of 95.08% was achieved when hydrogen peroxide was used at 9%v/v. The nickel recovery is 3.5 times higher than without the addition of hydrogen peroxide. Meanwhile, sodium chloride concentration of 0.8 mol/L was able to provide the highest nickel recovery of 50.38% or an increase of 1.9 times compared to without the addition of sodium chloride.

Pengambilan Lantanum dan Nikel dari Katalis Bekas Menggunakan Asam Sitrat: Peninjauan Performa secara Kuantitatif Menggunakan Response Surface Method (Lantanum and Nickel Recovery from Spent Catalyst Using Citric Acid : Quantitative Performance......) Himawan Tri Bayu Murti Petrus; Ardyanto Wijaya; Yusuf Iskandar; Danu Bratakusuma; Hendrik Setiawan; Wiratni Wiratni; Widi Astuti
Metalurgi Vol 33, No 2 (2018): Metalurgi Vol. 33 No. 2 Agustus 2018
Publisher : National Research and Innovation Agency (BRIN)

Heavy metals and Rare earth elements (REEs) are nowadays being used widely in many industries from electronics to petroleum industries as catalysts. However, their disposal caused serious problems to the environment. With the sharp growth in its usage, there is a better way to use and utilize valuable metals from secondary sources such as their disposal rather than using new raw materials. The aim of this work is to study the potential of citric acid as a leaching agent to extract lanthanum and nickel in various acid concentration and leaching temperature. The raw material used in this work is spent catalyst from Pertamina Refinery Unit VI, Balongan, Indonesia. The spent catalyst is decarbonized with a heat treatment at 725°C for 10 minutes before the leaching process. The leaching process used 0.1; 1; and 2 M of citric acid with a varied temperature of 30, 60, and 80°C. The lanthanum recovery was calculated by comparing the mass percentage of lanthanum before leaching process and after leaching process using Energy Dispersive X-Ray Spectroscopy (EDX). The results were analyzed by response surface methodology (RSM) and are proved to be a reliable method to depict and analyze the leaching characteristics. The molarity of the citric acid is the most significant independent variables used in the research for lanthanum recovery response. However, based on the Pareto analysis result there are no significant variables that affect the recovery of nickel. The second order polynomial fitting model is also proved to be compatible with the response of lanthanum recovery but is less compatible with nickel recovery. AbstrakPengambilan logam tanah jarang dan logam berat dari sumber sekunder (katalis bekas, limbah padat industri, dan abu terbang) menjadi alternatif karena pertimbangan lingkungan dan ketersediaan bijih di alam yang semakin sedikit. Pertimbangan tersebut yang mendasari studi tentang pengambilan lantanum dan nikel dari katalis bekas dengan menggunakan asam asetat. Bahan untuk penelitian ini adalah katalis bekas dari Penyulingan Pertamina Unit VI, Balongan. Sebelum pelindian dilakukan, katalis bekas didekarbonasi dengan perlakuan panas pada 725 °C selama 10 menit. Proses pelindian dilakukan dengan memvariasikan suhu dan konsentrasi asam asetat. Hasil eksperimen ditinjau menggunakanRSM (response surface methodology) dan terbukti sebagai metode yang dapat diandalkan untuk menggambarkan dan menganalisis karakter proses pelindian. Molaritas asam merupakan variabel independen yang secara signifikan mempengaruhi respon dalam pengambilan lantanum. Walaupun begitu, berdasarkan hasil analisis Pareto, tidak ada variabel yang secara signifikan mempengaruhi pengambilan nikel. Model fitting polinomial orde dua juga terbukti cocok dengan respon proses pengambilan lantanum daripada nikel. Hasil RSM menunjukkan bahwa kondisi optimum dari ekstraksilantanum dan nikel adalah pada pH 2 dan suhu 45 оC dimana lantanum dapat 100% terambil dan nikel sebanyak 60%.

Pengaruh Variasi pH Larutan Umpan terhadap Percent Recovery Litium dari Geothermal Brine Sintesis dengan Proses Low Pressure Nanofiltration Sutijan Sutijan; Christopher Mario Hananto; Stevanus Adi Darma; Vincent Sutresno Hadi Sujoto; Fika Rofiek Mufakhir; Widi Astuti; Himawan Tri Bayu Murti Petrus
Jurnal Metal Indonesia Vol 45, No 1 (2023): Metal Indonesia
Publisher : Balai Besar Logam dan Mesin

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32423/jmi.2023.v45.1-12

Penggunaan litium berkembang pesat secara signifikan di pasar global, terutama di Indonesia. Untuk memenuhi permintaan tersebut, ekstraksi litium yang berharga dari sumber alam lain dipertimbangkan, seperti air garam sisa panas bumi (geothermal brine). Penelitian dilakukan dengan menggunakan metode nanofiltrasi. Selama penelitian, proses dioperasikan pada variasi tekanan (5, 7, dan 9 bar) dan variasi pH (4, 7, dan 10). Oleh karena adanya kemungkinan fouling pada membran dan fenomena yang terjadi tidak dapat diamati dengan baik, maka digunakan geothermal brine sintetis pada penelitian ini sehingga diasumsikan bahwa silika telah dihilangkan sebelumnya. Berdasarkan hasil analisa data penelitian, maka dapat dapat dilihat bahwa perbedaan pH dan tekanan memainkan peran penting dalam konsentrasi litium dari geothermal brine. Dengn menggunakan Response Surface Method(RSM) diketahui bahwa recovery litium tertinggi diperoleh pada kondisi operasi pH 10 dan tekanan 9 bar. AbstractThe use of lithium is growing significantly in the global market, especially in Indonesia. To meet this demand, extraction of valuable lithium from other natural sources is considered, such as geothermal brine. The research was conducted using the nanofiltration method. During the study, the process was operated at various pressures (5, 7, and 9 bar) and pH variations (4, 7, and 10). Due to the possibility of fouling on the membrane and the phenomenon that occurs cannot be observed properly, synthetic geothermal brine is used in this study so that it is assumed that the silica has been removed previously. Based on the analysis of research data, it can be seen that the difference in pH and pressure plays an important role in the lithium concentration of geothermal brine. By using the Response Surface Method (RSM) it is known that the highest lithium recovery is obtained at operating conditions of pH 10 and pressure of 9 bar.

Preliminary study of production electrolytic silicon from silica amorphous in alkaline media Muhammad Miftahur Rahman; Franky Michael Hamonangan Siagian; Yogi Tri Putra Nasution; Widi Astuti; Ulung Sutopo; Himawan Tri Bayu Murti Petrus
CHEMICA: Jurnal Teknik Kimia Vol 10, No 2 (2023): August 2023
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26555/chemica.v10i2.26735

This study used direct electrowinning to examine the viability of producing silicon from amorphous silica in alkaline conditions. The Indonesian Dieng Geothermal Power Plant provided a sample of geothermal sludge with a high silica (SiO2) content. The samples were analyzed using various analytical techniques (XRF and XRD) before to electrolysis to ascertain their chemical composition and mineralogy. At low temperatures (30°C), the direct electrowinning method using amorphous silica suspended in sodium hydroxide (NaOH) was introduced. Current density adjustments were made to determine the direct electrowinning method's ideal operation. XRD and XRF analyses were performed on cathode deposits and residues in electrochemical cells to ascertain the chemical composition and current recovery. At a current density of 1250 A/m2, the low-temperature electrolysis current efficiency on natrium silicate solution can approach 34% recovery. Geothermal sludge was used to investigate the process, and the process's mediocre performance was caused by the problematic adsorption of amorphous silica particles on the cathode.

Efek Pre-Roasting Terhadap Parameter Kinetika Leaching Cr dari Limonit Gyan Prameswara; Andi Nurfaadilah Ulfah; Cipta Panghegar Supriadi; Iga Trisnawati; Himawan Tri Bayu Murti Petrus
REACTOR: Journal of Research on Chemistry and Engineering Vol 4, No 2 (2023): Published in December 2023
Publisher : Politeknik ATI Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52759/reactor.v4i2.97

Hydrometallurgical processes such as leaching of limonite ore to extract valuable metals including Ni and Co are often non-selective, including other metals in the leachate product. The leaching behavior of Cr from the chromite mineral contained in limonite ore is of concern due to the high Cr content of the leachate effluent. The pre-roasted process is frequently used to pre-treat limonite to increase the precious metal content. This study aims to determine the leaching behavior of Cr and the effect of pre-roasting on its kinetic parameters. The pre-roasting process was carried out at 280 and 610 oC for 4 hours. Observation of Cr leaching behavior was carried out in the leaching temperature range of 30-90 oC for 0-120 minutes using sulfuric acid solvent. The highest Cr recovery was achieved in pre-roasted ore leaching at 610 oC with leaching operating conditions of 2 M sulfuric acid, solid-liquid ratio of 5 g/50 mL, 200 rpm, for 120 minutes, at a leaching temperature of 90 oC, under these conditions Cr recovery reached 53.16%. The higher the roasting temperature, the lower the activation energy required for the leaching process. Cr leaching from raw and pre-roasted ore is controlled by the diffusion process through the ash layer with activation energies (EA) of 21.41, 18.64, and 14.71 kJ/mol for raw ore, pre-roasted ore 280 oC, and pre-roasted ore 610 oC, respectively. The comparison of kinetics data from several roasting products for atmospheric leaching feeds will provide industry with information to integrated pyro-hydrometallurgical process to increase Cr production from laterite.

Co-Authors Achmad Roesyadi Adha Priyawan, Adha Adiatama, Aufa Rai Adythia, Dicky Marsa Agus Haerudin Agus Prasetya Agus Prasetya Ahmad Tawfiequrrahman Yuliansyah Akbar Yulandra Althea Farina Atmaja, Althea Farina Anastasia Prima Kristijarti Andi Nurfaadilah Ulfah Angelia, Annasthasya Milleni Anis Kristiani, Anis Aprilianto, Doni Riski Ardyanto Wijaya Arham, La Ode Arifudin Idrus Arini Nur Utami Asih, Yekti Aulia Pertiwi Tri Yuda Bahri, Elsha Pamida Bangun, Aya Shika Bratakusuma, Danu Bratakusuma, Danu BUDI SETIADI DARYONO Christopher Mario Hananto Chusnul Khotimah Cipta Panghegar Supriadi D Bratakusuma Dagus Resmana Djuanda Danu Bratakusuma Danu Bratakusuma Dea Anisa Ayu Besari Devi, Fatma Putrinta Dewi Purnama Sari Dewi Purnama Sari Dewi, Jilda Sofiana Dwi Umi Siswanti Dwi Wiji Lestari Edward Yonathan Natapraja Eko Agus Suyono Elsha Pamida Bahri Esti Kukuh Perbawati Fahrurozi, Mohammad Fajar Nurjaman Fajar Nurjaman Fathan Bahfie Febry Yulindra Abdi Saputra Federick Dwi Putra Federick Dwi Putra Felisha Hapsari Tanujaya Felisha Hapsari Tanujaya Felix Arie Setiawan Ferian Anggara Fika Rofiek Mufakhir Fika Rofiek Mufakhir Fika Rofiek Mufakir Fika Rofiek Mufakir Fika Rofieq Mufakhir Franky Michael Hamonangan Siagian Gelar Panji Gemilar Gelar Panji Gemilar Gemilar, Gelar Panji Gyan Prameswara Hafid Zul Hakim Halomoan Siagian Harta Haryadi, Harta Hazmi, Fariz Al Heimbach, Ivano Hendrik Setiawan Hendrik Setiawan, Hendrik Himmah Sekar Eka Ayu Agustina Hotden Manurung Hotden Manurung I Made Bendiyasa I Wayan Christ Widhi Herman Tangkas I Wayan Warmada Iga Trisnawati Iga Trisnawati Indra Perdana Indra Perdana Indra Perdana Indra Perdana Istihanah Nurul Eskani Ivanna Crecentia Narulita Simanungkalit Jayawarsa, A.A. Ketut Jonas Kristanto Joni Setiawan Kevin Cleary Wanta Kinanti, Divita Hayyu Kristanto, Jonas Kurniawansyah, Firman Laksono Trisnantoro Marizka Aviana Permatasari Mita Kusumaningrum, Mita Mufakhir, Fika Rofiek Mufakhir, Fika Rofieq Muhammad Miftahur Rahman Mustika, Pra Cipta Buana Wahyu Nadya Fardani, Nadya Natalia, Priskila Patria, Aulia Agus Poernomo, Venny Putra, Agik Dwika Putra, Ilham Satria Raditya Radinda Bian Zaqina, Radinda Bian Rahman, Muhammad Irfan Ramadhany, Putri Ratna Frida Susanti Rika Ernawati Riyadi, Delfimelinda Nurul RR. Ella Evrita Hestiandari Salafudin Salafudin, Salafudin Shinta Virdhian Shinta Virdhian shinta virdhian, shinta Simanungkalit, Ivanna Crecentia Narulita Siti Nurul Aisyiyah Jenie, Siti Nurul Aisyiyah Slamet Sumardi Slamet Sumardi Slamet Sumardi, Slamet Soesaptri Oediyani Stephen Lim Stevanus Adi Darma Sujoto, Vincent Sutresno Hadi Suprabanindya, Caecilia Tridjata Supriadi , Cipta Panghegar Supriyatna, Yayat Iman Surianti Surianti Suryanaga, Chandra Edward Suryanaga, Edward Chandra Sutijan Sutijan Sutijan Sutijan Syamsumin Syamsumin, Syamsumin Takeishi, Kaoru Tampubolon, Aron Pangihutan Christian Tangkas, I Wayan Christ Widhi Herman Taufik Hery Purwanto Timotius, Daniel Trisnawati, Iga Ulfah , Andi Nurfaadilah Ulin Herlina Ulung Sutopo Utama, Andhika Putera Utomo, Dimas Bagus Galih Vincent Sutresno Hadi Sujoto Wahyu Rachmi pusparini Wahyu Yun Santoso Wibowo, Decka Pynka Widi Astuti Widi Astuti Widi Astuti Widi Astuti Widi Astuti Widi Astuti Widi Astuti Widi Astuti Widi Astuti Widi Astuti Widi Astuti Widi Astuti Widi Astuti Widi Astuti Widya Rosita Wijaya, Ardyanto Wiratni Wiratni Wiratni Wiratni, Wiratni Y Iskandar Yogi Tri Putra Nasution Yuda, Aulia Pertiwi Tri Yuni Kusumastuti, Yuni Yuniati, Mutia Dewi Yusuf Iskandar

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