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All Journal Jurnal Rekayasa Proses Jurnal Sains dan Teknologi CHEMICA Jurnal Teknik Kimia IJOG : Indonesian Journal on Geoscience 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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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%.

SYNTHESIS AND CHARACTERISTIC OF NANOSILICA FROM GEOTHERMAL SLUDGE: EFFECT OF SURFACTANT Adiatama, Aufa Rai; Susanti, Ratna Frida; Astuti, Widi; Petrus, Himawan Tri Bayu Murti; Wanta, Kevin Cleary
Metalurgi Vol 37, No 2 (2022): Metalurgi Vol. 37 No. 2 Agustus 2022
Publisher : National Research and Innovation Agency (BRIN)

In the synthesis of nanoparticles, the phenomenon of agglomeration is an undesirable condition because the particles formed can be larger. The use of surfactants can prevent the occurrence of this phenomenon. In this study, the use of surfactants was studied in the synthesis of nanosilica from geothermal sludge. The method applied in the synthesis of nanosilica is the sol-gel method. A 1 M sodium hydroxide (NaOH) solution was used to prepare the sol phase, while the gel phase was prepared at pH 5 using a 1.5 M hydrochloric acid (HCl) solution. The surfactants used were alkyl benzene sulfonate (ABS), cetyltrimethylammonium bromide (CTAB), sodium dodecyl sulfate (SDS), and polyvinylpyrrolidone (PVP). The surfactant added to the precursor solution was at the critical micelle concentration (CMC), where the CMC values for each surfactant were 0.15, 0.05, 0.50, and 1.00 wt% for ABS, CTAB, SDS, and PVP, respectively. The experimental results showed that the synthesis of nanosilica without surfactant could produce the product with a purity of 98.03%. Even though the purity is already high, the resulting product experiences agglomeration and surfactants were needed to minimize the occurrence of agglomeration in the product. The surfactant that gives the best product quality is PVP, where the particle size is in the range of 2.01–3.65 nm. However, the product produced with this PVP has a low purity, 56.67%. It is because the sodium chloride (NaCl) is trapped in the surfactant template.

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 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 Gde Sukadana 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 Nasution, Yogi Tri Putra Natalia, Priskila Patria, Aulia Agus Perbawati, Esti Kukuh Poernomo, Venny Pratiwi, Fadiah Putra, Agik Dwika Putra, Ilham Satria Raditya Radinda Bian Zaqina, Radinda Bian Rahman, Muhammad Irfan Rahman, Muhammad Miftahur Ramadhany, Putri Ratna Frida Susanti Rika Ernawati Riyadi, Delfimelinda Nurul RR. Ella Evrita Hestiandari Salafudin Salafudin, Salafudin Shinta Virdhian Shinta Virdhian shinta virdhian, shinta Siagian, Franky Michael Hamonangan 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 Supit, Jance Mudjani Suprabanindya, Caecilia Tridjata Supriadi , Cipta Panghegar Supriyatna, Yayat Iman Surianti Surianti Suryanaga, Chandra Edward Suryanaga, Edward Chandra Sutijan Sutijan Sutijan Sutijan Sutopo, Ulung 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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