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All Journal Jurnal Rekayasa Proses Reaktor JURNAL TEKNOLOGI LINGKUNGAN Jurnal Bahan Alam Terbarukan Eksergi: Chemical Engineering Journal JURNAL INTEGRASI PROSES Teknika: Jurnal Sains dan Teknologi Jurnal Agroekoteknologi Jurnal Teknika ALCHEMY Jurnal Penelitian Kimia Jurnal Rekayasa Proses Jurnal Teknik Kimia Indonesia Journal of Community Service in Science and Engineering Metalurgi Jurnal Teknologi Lingkungan Bulletin of Chemical Reaction Engineering & Catalysis

Jayanudin Jayanudin

Universitas Sultan Ageng Tirtayasa

Author-ID : 2856243

Agriculture, Biological Sciences & Forestry Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Earth & Planetary Sciences Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mathematics Mechanical Engineering Physics Social Sciences Transportation Other

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Training on making composters and biopore holes as a solution to the organic waste problem Retno Sulistyo Dhamar Lestari; Denni Kartika Lestari; Dhena Ria Barleany; Endang Suhendi; Jayanudin Jayanudin
Journal of Community Service in Science and Engineering (JoCSE) Vol 2, No 2 (2023): Available Online in October 2023
Publisher : Faculty of Engineering, Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36055/jocse.v2i2.21031

Pengelolaan sampah organik dan anorganik merupakan salah satu permasalahan yang sering terjadi di masyarakat. Pengembangan komunitas dan pengenalan teknologi pembuatan kompos dan lubang biopori merupakan upaya untuk meningkatkan potensi lingkungan berupa pengelolaan sampah organik. Metode yang digunakan dalam kegiatan pengabdian ini adalah penyuluhan dan focus group discussion (FGD). Permasalahan yang sering terjadi adalah sampah rumah tangga yang dibiarkan tidak terpilah dan langsung dikirim ke tempat pembuangan sampah menyebabkan banyaknya sampah yang menumpuk di tempat pembuangan akhir (TPA). Program ini fokus pada perubahan pola pikir masyarakat dalam menangani sampah rumah tangga, memilah sampah, dan membuat lubang-lubang biopori di setiap rumah dan lahan terbuka serta membuat komposter untuk mengolah sampah organik menjadi kompos. Management of organic and inorganic waste is one of the problems that often occurs in society. Community development and the introduction of composting technology and bio pore holes are efforts to increase environmental potential through organic waste management. The methods used in this service activity are counseling and focus group discussions (FGD). The problem is that household waste is left unsorted and sent directly to landfills, causing large amounts of garbage to pile up in final disposal sites (TPA). This program focuses on changing the community's mindset in handling household waste, sorting waste, making bio pore holes in every house and open land, and making a composter to process organic waste into compost.

SINTESIS, KARAKTERISASI DAN APLIKASI TIMAH TETRAKLORIDA PENTAHIDRAT Marta Pramudita; Alia Badra Pitaloka; Rahmayetti Rahmayetti; Jayanudin Jayanudin; Saepurahman Saepurahman; Teguh Kurniawan; Selfira Arum Andadari
JURNAL INTEGRASI PROSES Vol 12, No 2 (2023)
Publisher : JURNAL INTEGRASI PROSES

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36055/jip.v12i2.22830

Indonesia is one of the world's largest tin-producing countries, but its downstream industry is not well developed. One of the chemical products derived from tin is SnCl4.5H2O. Several commercial production routes are reviewed in this paper. In addition, SnCl4.5H2O characterization techniques from advanced analytical instruments to titration analysis are also discussed. Commercial applications of SnCl4.5H2O products include catalysts, polyvinyl chloride (PVC) stabilizers, and dyes. The latest developments regarding the potential of SnCl4.5H2O as a catalyst are also reviewed in this paper.

Influence of chitosan addition on the properties and characteristics of acrylic acid-chitosan based superabsorbent prepared through gamma irradiation technique and its application for urea loading Jayanudin, Jayanudin; Lestari, Retno Sulistyo D.; Barleany, Dhena Ria; Pitaloka, Alia Badra; Yulvianti, Meri; Demustila, Harly; Yulianto, Amin; Anggoro, Dendy Vito; Ruhiatna, Adam
Jurnal Teknika Vol 19, No 2 (2023): AVAILABLE ONLINE IN NOVEMBER 2023
Publisher : Faculty of Engineering, Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36055/tjst.v19i2.20842

Superabsorbent can be used as a carrier for urea-fertilizer which can release urea slowly and can be used as a dry soil moisturizer. The main goal of the current study was to investigate the influence of adding chitosan grafted onto acrylic acid as a superabsorbent base material on the properties and characteristics of the resulting superabsorbents. The method used to prepare the superabsorbent was the gamma irradiation technique. Acrylic acid was neutralized by adding KOH, and then chitosan was added. The mixture was put in a plastic container, followed by irradiation with gamma rays. The formed superabsorbent was washed and dried in an oven, then the dry superabsorbent was analyzed for its properties and characteristics. The results showed that superabsorbent properties such as swelling ratio (from 49.38 g/g to 49.38 g/g), water retention (0.43%-0.89% after 7 days), and urea loading (86.75% to 96.4%) were affected by the amount of chitosan added. However, adding too much chitosan can reduce the superabsorbent properties. The characterization of the superabsorbent revealed a smooth surface with a porous structure, and FTIR analysis showed that chitosan was grafted onto acrylic acid.

Bimetallic Ru-Sn as Effective Catalysts for the Selective Hydrogenation of Biogenic Platform Chemicals at Room Temperature Azzahra, Atina Sabila; Dewi, Heny Puspita; Mikrianto, Edi; Sembiring, Kiky Corneliasari; Sunnardianto, Gagus Ketut; Nata, Iryanti Fatyasari; Rodiansono, Rodiansono; Jayanudin, Jayanudin
Bulletin of Chemical Reaction Engineering & Catalysis 2023: BCREC Volume 18 Issue 4 Year 2023 (December 2023)
Publisher : Masyarakat Katalis Indonesia - Indonesian Catalyst Society (MKICS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.9767/bcrec.20067

Supported bimetallic ruthenium-tin (denoted as Ru-Sn(x); x = molar ratio of Ru/Sn) catalysts were examined for room temperature (RT) hydrogenation of biogenic platform chemicals of levulinic acid (LA) to g-valerolactone (GVL). Six types of metal oxide support c.a. Nb2O5, TiO2, ZnO, ZrO2, g-Al2O3, active charcoal (AC), were employed as the support for Ru-Sn(x). Ru-Sn(3.0)/Nb2O5 (Ru/Sn = 3.0) that reduced at 500 oC demonstrated the highest yield of GVL (98%) at 30 oC, 30 bar H2 for 3 h. The increase in Sn loading amount (Ru/Sn = 1.5) resulted in decreasing of LA conversion (83%) under the same reaction conditions. Among the studied supported Ru-Sn catalysts, Nb2O5 and ZnO supports exhibited better catalytic performances than that other for RT hydrogenation of LA and various biogenic platform chemicals. The Ru-Sn(3.0)/Nb2O5 catalyst was characterized by means of various adsorption and spectroscopic techniques. The Ru-Sn(3.0)/Nb2O5 catalyst was found to be reusable without any significant loss of its activity. Copyright © 2023 by Authors, Published by BCREC Group. This is an open access article under the CC BY-SA License (https://creativecommons.org/licenses/by-sa/4.0).

Kinetic Modelling of Solid-Liquid Extraction of Tin From Dimethyltin Dichloride by-Products: Effect of Solvent and Stirring Speed Adenia, Atika Putri; Jayanudin, Jayanudin; Kosimaningrum, Widya Ernayati; Kurniawan, Teguh; Zulfaidah, Farah Alifia; Siahaan, Yudhistira Madani Putra
Metalurgi Vol 39, No 3 (2024): Metalurgi Vol. 39 No. 3 2024
Publisher : National Research and Innovation Agency (BRIN)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55981/metalurgi.2024.785

Indonesia is the world’s second-largest tin exporter; however, downstream utilization of tin remains limited. One potential source of secondary tin is the by-product generated from the production of DMT (dimethyltin dichloride) at PT Timah Industri, which contains 40–70% tin in both organic and inorganic forms. This study aims to investigate the extraction kinetics and evaluate the effects of solvent type and agitation speed on tin recovery from the DMT by-product. Extraction experiments were conducted using different solvents (water, 50% methanol, and pure methanol) and agitation speeds (300 and 400 rpm) for 24 hours. Tin concentrations in the filtrate were determined using XRF (x-ray fluorescence). Kinetic modeling was performed using first-order and second-order models through both linear and non-linear approaches. The results show that the extraction process follows second-order kinetics, with rate constants (k) in the short-time regime ranging from 0.002 to 0.005 L·(g·min)⁻¹ and in the long-time regime from 0.0001 to 0.0002 L·(g·min)⁻¹. Water demonstrated the highest dissolution capacity (35.35 ± 0.09%), while pure methanol selectively dissolved organotin compounds (30.45 ± 0.12%). The 50% methanol solvent yielded intermediate extraction results (32.65 ± 0.37%) due to the combined characteristics of both solvents. Agitation speed significantly enhanced tin dissolution.

Modifikasi Pupuk Urea Pelepasan Terkendali dan Pengaruhnya terhadap Lingkungan Jayanudin Jayanudin; Retno S.D. Lestari; Muhammad Luthfi; Maulana Suyuti
Jurnal Teknologi Lingkungan Vol. 23 No. 2 (2022)
Publisher : BRIN Publishing (Penerbit BRIN)

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

Controlled release urea fertilizer is one solution to increase the efficiency of nutrient absorption by plants and is more environmentally friendly. The aims of this study was to determine the yield and water absorption of controlled release urea fertilizer and analyze the content of nitrate, nitrite, and ammonia as environmental pollution parameters. Controlled release urea fertilizer was prepared using the emulsion crosslinking method with chitosan as the matrix. Urea was dissolved in chitosan then added in oil and stirred to form an emulsion. Next, glutaraldehyde saturated toluene (GST) as a crosslinker was dripped slowly and then continuously stirred for 2 hours. Urea loaded-chitosan microspheres (controlled release urea fertilizer) were dried and analyzed. Furthermore, the yield, water absorption, and analysis of nitrate, nitrite, and ammonia from the released urea was determined. Controlled release urea fertilizer obtained yield was 91.3–97.28%, water absorption of 78.87–91.61%. Analysis of nitrate, nitrite, and ammonia from the study concluded that urea fertilizer contained in chitosan microspheres is more environmentally friendly.

Enkapsulasi dan Karakterisasi Pelepasan Terkendali Pupuk NPK Menggunakan Kitosan Yang Ditaut Silang Dengan Glutaraldehida Jayanudin Jayanudin; Retno Sulistyo D Lestari
ALCHEMY Jurnal Penelitian Kimia Vol 16, No 1 (2020): March
Publisher : UNIVERSITAS SEBELAS MARET (UNS)

Pelepasan terkendali pupuk NPK bertujuan untuk meningkatkan efisiensi penggunaan unsur hara tanaman dan juga untuk mengurangi pencemaran lingkungan. Penelitian ini bertujuan untuk menentukan pengaruh konsentrasi larutan kitosan dan glutaraldehida terhadap yield dan daya serap mikrokapsul pupuk NPK. Tujuan lain adalah menentukan karakterisasi dan analisis release pupuk NPK dari mikrokapsul dan juga menghitung kinetika release. Mikrokapsul pupuk NPK dipreparasi dengan mencampurkan pupuk NPK cair ke dalam larutan kitosan, kemudian campuran tersebutkan diteteskan ke dalam larutan glutaraldehida sambil diaduk. Mikrokapsul pupuk NPK yang terbentuk dicuci menggunakan petroleum eter dilanjutkan dengan heksana dan dikeringkan. Hasil penelitian menunjukkan bahwa peningkatan konsentrasi larutan kitosan dan glutaraldehida menghasilkan peningkatan yield, menurunkan daya serap air, dan menurunkan pupuk NPK yang release dari mikrokapsul pupuk NPK. Model kinetika release yang sesuai berdasarkan tingginya nilai R2 adalah model order satu dan model Higuchi didapat dari mikrokapsul pupuk NPK yang dipreparasi dengan 1% (b/v) larutan kitosan dan 5% (v/v) larutan glutaraldehida. Encapsulation and Characterization of Controlled Release of NPK Fertilizer Using Glutaraldehyde-Crosslinked Chitosan. Controlled release NPK fertilizer aims to improve the nutrient use efficiency (NUE) of plants and also to reduce environmental pollution. This study aims to determine the effect of the concentration of chitosan and glutaraldehyde solutions on the yield and absorptive ability of NPK fertilizer microcapsules. Another objective was to determine the characterization and analysis of NPK fertilizer releases from microcapsules and also to calculate the release kinetics. NPK fertilizer microcapsules were prepared by mixing liquid NPK fertilizer into a chitosan solution, and then the mixture was dripped into a glutaraldehyde solution while stirring. NPK fertilizer microcapsules formed were washed using petroleum ether, followed by hexane and dried. The results showed that an increase inthe concentration of chitosan and glutaraldehyde solutions resulted in an increase in yield, decreased water absorbency, and lower NPK fertilizer released from microcapsules. The appropriate release kinetics models based on the higher R2 value were the first-order model and the Higuchi model obtained from microcapsules of NPK fertilizer that was prepared with 1% (w/v) chitosan solution and 5% (v/v) glutaraldehyde solution.

THE INFLUENCE OF COATING MATERIAL DIFFERENCE AGAINST ENCAPSULATION EFFICIENCY OF RED GINGER OLEORESIN Jayanudin Jayanudin; Rochmadi Rochmadi; M. Kemal Renaldi; Pangihutan Pangihutan
ALCHEMY Jurnal Penelitian Kimia Vol 13, No 2 (2017): September
Publisher : UNIVERSITAS SEBELAS MARET (UNS)

The purpose of this study was to determine the effect of different coating materials on the efficiency of red ginger oleoresin encapsulation and characterization of microcapsule surface. The encapsulation process begins by dissolving chitosan with 1 % (v/v) acetic acid and dissolving sodium alginate using aquadest to be used as a coating material. Red ginger oleoresin alginate included in the solution was stirred. The mixture entered into the chitosan solution and added tween 80 was stirred using a homogenizer to emulsify. The emulsion that forms included in the spray dryer to be converted into a powder of microcapsules, and then analyzes the encapsulation efficiency and surface morphology of microcapsules using scanning electron microscopy (SEM). Differences in the coating material used were chitosan, mixture of chitosan-alginate and mixture of chitosan-alginate-sodium tripolyphosphate (STPP). Weight ratio of red ginger oleoresin and the coating material were 1: 1, 1: 2 and 1: 3. The research results obtained were the highest encapsulation efficiency obtained from the coating material of the chitosan-alginate-sodium tripolyphosphate (STPP) at a ratio of 1: 3, namely by 85 %.

Co-Authors A.A. Ketut Agung Cahyawan W Abd. Rasyid Syamsuri Adenia, Atika Putri Adi Winata Ahmad Imanudin Ahmad Suhendi Aldi Fathurohman Ali Hafid Supriatna Alia Badra Pitaloka Anellysha Putri Apriantika Anggoro, Dendy Vito Artika Sari Septiaziz Ayu Zakiyah Lestari Azzahra, Atina Sabila Barleany, Dhena Ria Chatarina Umbul Wahyuni Dandi Irawanto Dandi Irwanto Denni Kartika Lestari Denni Kartika Sari Denni Kartika Sari Devi Nuraini M Dewi, Heny Puspita Diki Suhendar Edi Mikrianto Endang Suhendi Endang Suhendi, Endang Endrian Harzuli Fakhri Muhammad Fakhri Muhammad Feni Nurbayanti Gustiana Awaludin Sobarsah Hafid Alwan Harly Demustila Hary Sulistyo Indar Kustiningsih Iqbal Syaichurrozi Iryanti Fatyasari Nata, Iryanti Fatyasari Jauharotul Uyun Kiky Corneliasari Sembiring Kosimaningrum, Widya Ernayati Kustiningsih, Indar Lestari, Retno Sulistyo D. Listiyani Nurwindya Sari M. Kemal Renaldi Marta Pramudita Maulana Suyuti Maulana Suyuti Meri Yulvianti Moh Fahrurrozi Mohammad Fahrurrozi Mohammad Fakhrurozi Muhammad Luthfi Muhammad Luthfi Nicken Ayoe Fajrianto Nuryoto Ofi Shofiah Pangihutan Pangihutan Pitaloka, Alia Badra R Rochmadi Rahmayetti Rahmayetti Reta Pujinia Retno Hadi Winoto Retno S.D. Lestari Retno Sulistyo D Lestari Retno Sulistyo Dhamar Lestari Retno Sulistyo Dhamar Lestari Reyonaldo Langgeng Adi Wardana Reyonaldo Langgeng Adi Wardana Rizkina Ika Aryana Rochmadi Rochmadi Rochmadi Rochmadi Rochmadi Rochmadi Rochmadi Rochmadi Rodiansono Rodiansono Rozak Bahaudin Rozak Rozak Rudi Hartono Ruhiatna, Adam Saepurahman Saepurahman Sang Kompiang Wirawan Selfira Arum Andadari Seta Dewo Siahaan, Yudhistira Madani Putra Sunnardianto, Gagus Ketut Teguh Kurniawan Teguh Kurniawan Tri Rina Sari Wahyu Budi Setiawan Yulianto, Amin Yulvianti, Meri Zulfaidah, Farah Alifia

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