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All Journal Agrointek Jurnal Teknik Kimia Jurnal Teknologi Pertanian Jurnal Fisika Unand JURNAL INTEGRASI PROSES Journal of Natural Sciences and Mathematics Research Briliant: Jurnal Riset dan Konseptual CHEESA: Chemical Engineering Research Articles Journal of Functional Food and Nutraceutical G-Tech : Jurnal Teknologi Terapan Journal of Applied Science, Engineering, Technology, and Education Nusantara Science and Technology Proceedings International Journal of Eco-Innovation in Science and Engineering (IJEISE) AJARCDE (Asian Journal of Applied Research for Community Development and Empowerment) Journal Serambi Engineering (JSE) Indonesian Journal of Chemical Science
Sintha Soraya Santi
Program Studi Teknik Kimia, Universitas Pembangunan Nasional “Veteran” Jawa Timur
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mechanical Engineering Medicine & Pharmacology Nursing Physics Other

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SINTESIS BIO-OIL DARI BONGGOL JAGUNG MENGGUNAKAN PROSES PIROLISIS Cakradetha, Ivenda Sasquea; Suriyanto, Suriyanto; Santi, Sintha Soraya; Utami, Isni; Sutiyono, Sutiyono
BRILIANT: Jurnal Riset dan Konseptual Vol 10 No 2 (2025): Volume 10 Nomor 2, Mei 2025
Publisher : Universitas Nahdlatul Ulama Blitar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.28926/briliant.v10i2.2023

Abstract

Bio-Oil is a raw material that can be produced through various methods, one of which is the biomass pyrolysis process. Biomass pyrolysis has been extensively studied and has shown promising potential as an alternative fuel due to its lignocellulose content. In Indonesia, corn production reaches 23.1 million tons, resulting in waste in the form of corn cobs. This study employed the fast pyrolysis method to convert corn cobs into Bio-Oil. The pyrolysis process was conducted in a sealed reactor, externally heated to a temperature of 400°C. The corn cobs used as raw material were first crushed and sieved to achieve a uniform particle size of 20 mesh. Subsequently, the corn cobs were placed into the pyrolysis reactor, with residence times varied at 40, 60, 80, 100, and 120 minutes. Upon completion of the pyrolysis process, the resulting products, consisting of Bio-Oil, charcoal, and pyrolysis gas, were separated and analyzed for Bio-Oil yield, density, viscosity, and calorific value. Chemical composition analysis was performed using Gas Chromatography-Mass Spectrometry (GC-MS) to identify the main compounds present in the Bio-Oil. The highest yield was obtained with a particle size of 20 mesh and a residence time of 120 minutes, resulting in a yield of 72.4632%, a density of 1.3018 kg/m³, a viscosity of 1.6712 mm²/s, and a calorific value of 6.640 Kcal/kg. GC-MS analysis revealed an acetic acid content of 37.49% and a methyl ester content of 22.19%.
Synthesis of Ammonium Silicate Liquid Fertilizer from Rice Husk Ash Santi, Sintha Soraya; Pramuji, Faiq Hawaari Ahmad; Juventino, Syahdhan Adiyah Islami; Puspitawati, Ika Nawang
AJARCDE (Asian Journal of Applied Research for Community Development and Empowerment) Vol. 9 No. 3 (2025)
Publisher : Asia Pacific Network for Sustainable Agriculture, Food and Energy (SAFE-Network)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29165/ajarcde.v9i3.822

Abstract

This study aims to synthesise liquid ammonium silicate fertiliser ((NH?)?SiO?) from rice husk ash and to determine the effects of varying ammonium hydroxide (NH?OH) concentration and reaction temperature on the resulting silica (Si) and nitrogen (N) content. Rice husk ash is used as a silica source because it contains high levels of SiO?, up to 82%. The research process includes three main stages: raw material preparation; silica extraction using 10% NaOH at 80°C for 120 minutes; and a synthesis reaction between the extracted silica and an NH?OH solution (5–25%) at 30–110°C for 60 minutes. Silica content analysis was carried out using UV-Vis spectrophotometry, while nitrogen content was analyzed using the Kjeldahl method. The results showed that increasing NH?OH concentration and reaction temperature significantly increased silica content, while increasing temperature tended to decrease nitrogen content due to ammonia volatility. The best conditions were obtained at a NH?OH concentration of 25%, a reaction temperature of 70°C, a silica content of 5.2701%, and a nitrogen content of 17.1637%. The results meet the SNI 02-6681-2002 standard for liquid macro compound fertilizers, which requires a minimum content of 4% for silica and nitrogen. Thus, rice husk ash has great potential as an alternative raw material for the manufacture of environmentally friendly ammonium silicate liquid fertilizers. Contribution to Sustainable Development Goals (SDGs):SDG 2: Zero HungerSDG 9: Industry, Innovation, and InfrastructureSDG 12: Responsible Consumption and ProductionSDG 13: Climate Action
Sintesis dan Karakterisasi Katalis Aluminosilikat dari Kaolin Zafirah, Shakanti 'Aqilah; Windhy Mutiara Salsabillah; Sintha Soraya Santi; Nurul Widji Triana; Susilowati
Jurnal Serambi Engineering Vol. 11 No. 1 (2026): Januari 2026
Publisher : Faculty of Engineering, Universitas Serambi Mekkah

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Abstract

This study aims to synthesize and characterize aluminosilicate catalysts derived from Indonesian kaolin through the hydrothermal method with variations in surfactant type and aging temperature. Kaolin served as the main source of silica and alumina, while CTABr (cationic) and PEG (non-ionic) acted as structure-directing agents that guided the formation of the catalyst pore framework. The synthesis was carried out at aging temperatures of 25°C, 40°C, 50°C, 65°C, and 70°C to investigate their effects on the functional groups and crystallinity of the catalysts. FTIR analysis revealed the presence of main Si–O–Si and Al–O–Si functional groups in all samples, with additional organic peaks attributed to the surfactants. Samples synthesized with CTABr showed sharper spectral peaks, indicating a more ordered structure. XRD analysis showed that the aluminosilicate catalyst synthesized with CTABr at 50°C exhibited the highest diffraction intensity (2615 cts), representing higher crystallinity compared to the PEG-based sample, which remained amorphous. SEM observations demonstrated that PEG produced smoother and more porous particle morphology, while CTABr resulted in agglomerated particles. Overall, the combination of CTABr surfactant and 50°C aging temperature yielded the best synthesis result with a stable semi-crystalline structure. This research highlights the great potential of local kaolin as a sustainable and efficient raw material for aluminosilicate catalyst production.
 Peningkatan Kadar Be Air Laut Untuk Mempercepat Produksi Garam Dengan Metode Evaporasi Talang Berlubang Oktavianingrum, Mursyidah; Aisah Putri Maharani; Sintha Soraya Santi; Caecilia Pujiastuti; Ketut Sumada
Jurnal Serambi Engineering Vol. 11 No. 2 (2026): April 2026
Publisher : Faculty of Engineering, Universitas Serambi Mekkah

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Abstract

Indonesia sebagai negara maritim memiliki potensi besar dalam produksi garam, namun metode konvensional masih memerlukan waktu lama untuk mencapai kadar Baume (°Be) yang sesuai dengan standar. Penelitian ini bertujuan untuk mengkaji pengaruh debit aliran, variasi diameter lubang talang, serta kondisi suhu dan kelembaban terhadap laju evaporasi air laut dengan menggunakan metode evaporasi talang berlubang. Proses penelitian dilakukan dengan memompa air laut sebanyak 250 liter pada kadar awal 4°Be ke dalam talang berlubang dengan variasi diameter lubang 0,2 cm; 0,3 cm; 0,4 cm; 0,5 cm dan 0,6 cm serta debit aliran 147,60 liter/jam; 169,20 liter/jam; 183,60 liter/jam; 194,40 liter/jam; 205,20 liter/jam. Hasil penelitian menunjukkan bahwa semakin kecil diameter lubang dan semakin besar debit aliran, maka laju evaporasi semakin tinggi. Kondisi suhu yang meningkat dan kelembaban rendah turut mempercepat penguapan. Hasil terbaik diperoleh pada diameter lubang 0,2 cm dan debit 210,9 L/jam dengan kadar akhir 23°Be, yang dapat menguapkan air hingga 206,5 liter, serta laju evaporasi 0,002176 m³/m²/s. Dengan demikian, metode evaporasi talang berlubang efektif dalam mempercepat peningkatan kadar Be air laut untuk mempercepat produksi garam, dengan peralatan yang sederhana dan mudah diaplikasikan oleh masyarakat.
The Effect of Substrate Concentration and Bacterial Loading on Biobutanol Production from Molasses Using Clostridium acetobutylicum Putri , Zahra Dzaki Roofia; Destyano, Azel; Sari, Ni Ketut; Triana, Nurul Widji; Santi, Sintha Soraya
G-Tech: Jurnal Teknologi Terapan Vol 10 No 2 (2026): G-Tech, Vol. 10 No. 2 April 2026
Publisher : Universitas Islam Raden Rahmat, Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70609/g-tech.v10i2.9288

Abstract

Biobutanol is a promising alternative fuel due to its high energy content and compatibility with existing fuel infrastructure. This study evaluates the effects of molasses substrate concentration and Clostridium acetobutylicum loading on biobutanol production via the Acetone–Butanol–Ethanol (ABE) fermentation process. Molasses concentration was varied at 3%, 4%, 5%, 6%, and 7%, while bacterial loading ranged at 1%, 2%, 3%, 4%, and 5%. Fermentation was performed under anaerobic conditions at 37 °C for 4 days with CaCO₃ as a buffering agent. Unlike previous studies that investigated these parameters individually, this work examines their combined influence using a statistical optimization approach. The highest experimental biobutanol concentration of 6.06% was obtained at a substrate concentration of 6% and a bacterial loading of 5%. Optimization using Response Surface Methodology (RSM) produced a statistically significant quadratic model (p < 0.0001) with good predictive performance (R² = 0.9045; predicted R² = 0.8153). The optimal conditions were predicted at a substrate concentration of 5.220% and a bacterial loading of 4.580%, yielding a biobutanol concentration of 6.087%. These results highlight the importance of simultaneous parameter optimization for improving molasses-based biobutanol production.
Development and Mechanical Characterization of Sustainable Bioplastics from Water Hyacinth Cellulose and Sweet Corn Cob Starch Aryanto, Fiqi Putra Pratama; Sintha Soraya Santi; Damayanti, Aulia Putri
AJARCDE (Asian Journal of Applied Research for Community Development and Empowerment) Vol. 10 No. 2 (2026)
Publisher : Asia Pacific Network for Sustainable Agriculture, Food and Energy (SAFE-Network)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29165/ajarcde.v10i2.1008

Abstract

This study aims to investigate the effect of water hyacinth (Eichhornia crassipes) cellulose and sweet corn cob (Zea mays) starch on the characteristics of bioplastics. The increasing environmental issues caused by non-biodegradable plastics have encouraged the development of eco-friendly alternatives such as bioplastics derived from renewable biomass. There are two JIS standards referred to in this study. First, JIS K7113 is used to measure the tensile strength and elongation of bioplastics. Second, JIS K7209 is used to measure water absorption. By meeting both standards, bioplastics made from water hyacinth and sweet corn cob are proven to have quality equivalent to conventional plastics according to Japanese industrial standards. .In this research, bioplastics were prepared using varying cellulose-to-starch ratios (0.2–1.0 g) and glycerol as a plasticizer (0.5–1.5 mL). The films were produced through gelatinization at 70°C followed by drying. The resulting bioplastics were evaluated based on tensile strength, elongation, and water absorption. The results showed that increasing cellulose content improved tensile strength, reaching a maximum of 9.51 MPa at a 1:1 ratio with 0.5 mL glycerol. Although the exact value is not stated in the abstract, based on similar research data, the maximum water absorption value can reach approximately 54.93%. This highest value occurs in the composition with the highest glycerol content (1.5 mL) because glycerol is hydrophilic (easily attracts water). The higher the glycerol concentration, the greater the bioplastic's ability to absorb water. Conversely, higher glycerol concentrations decreased tensile strength but increased elongation, with the highest elongation value reaching 50.09%. Water absorption increased with higher glycerol content due to its hydrophilic nature. Overall, the produced bioplastics met the Japanese Industrial Standard (JIS) requirements, indicating their potential as environmentally friendly alternatives to conventional plastics. Contribution to Sustainable Development Goals (SDGs):SDG 12: Responsible Consumption and ProductionSDG 13: Climate ActionSDG 14: Life Below Water SDG 15: Life on Land
Synthesis and Characterization of Nitrate-Based Fertilizers from Calcined Dolomite: Influence of Mass Loading and Stirring Time on Calcium and Magnesium Recovery. Brilliantino, Akhmad Maliki; Estiningtyas, Maria Florentina; Santi, Sintha Soraya; Saputro, Erwan Adi
AJARCDE (Asian Journal of Applied Research for Community Development and Empowerment) Vol. 10 No. 2 (2026)
Publisher : Asia Pacific Network for Sustainable Agriculture, Food and Energy (SAFE-Network)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29165/ajarcde.v10i2.987

Abstract

This This study aims to synthesize calcium magnesium nitrate fertilizer (CaMg(NO?)?) from calcined dolomite and to evaluate the influence of dolomite mass and stirring time on the resulting calcium (Ca) and magnesium (Mg) content. Dolomite was selected as the primary raw material due to its wide availability in Indonesia and its naturally high Ca and Mg composition. The experimental procedure consisted of two main stages: thermal calcination of dolomite at 800°C for 4 hours, followed by a reaction with 100 mL of 68% nitric acid at 35°C under constant stirring at 300 rpm. The dolomite mass was varied between 5 and 25 g, while the stirring time ranged from 15 to 75 minutes. Product characterization was conducted using X-ray fluorescence (XRF) to quantify CaO and MgO contents. The results indicate that prolonged stirring enhances the dissolution of mineral components, leading to improved calcium recovery, although the effect of increasing dolomite mass does not exhibit a strictly proportional trend. The optimum condition was identified at 20 g of dolomite and 60 minutes of stirring, yielding 82.05% CaO and 0.88% MgO after normalization. The CaO content satisfies the minimum requirement specified in SNI 02-2806-1992 (?26%), whereas the MgO content remains below the threshold established by European Communities regulations (1994). Overall, the synthesized product is more appropriately categorized as a calcium-based fertilizer, given the predominance of calcium over magnesium in the final composition. These findings highlight the potential of calcined dolomite as a viable feedstock for nitrate-based fertilizer production, although further optimization is required to enhance magnesium incorporation.
Co-Authors Aisah Putri Maharani Amalia Azzahroh Andriani, Silvia Desy Anjuda, Adli Putra Ardya Pramesti Regita Cahyani Ari Suwito Putra Ramadhon Ariesta Artamevia, Nazwa Aryanto, Fiqi Putra Pratama Azzahra, Tsania Putri Bintang Arya Sena Brilliantino, Akhmad Maliki Caecilia Pujiastuti Cakradetha, Ivenda Sasquea Chamida, Rida Damayanti, Aulia Putri Damayanti, Savira Farizqy Destyano, Azel Dyah Suci Perwitasari Erliyanti, Nove Kartika Erwan Adi Saputro Erwan Adi Saputro Estiningtyas, Maria Florentina Febriansyah, Harris Foni Putri Sandi Hamzah Fansuri Haque, Annisa Mutiara Salma Hariyanto, Ayu Puspita Kandhi Hartono, Muhamad Dendy Ika Nawang Puspitawati Indah Dwi Asti Irawati , Febriana ISNI UTAMI Juventino, Syahdhan Adiyah Islami Kesuma, Destha A. Ketut Sumada Ketut Sumada Khonsa Rezkania, Gita Kindriari Nurma Wahyusi Kusumawati, Yuly Milenia, Bella Mohd Hafiz Dzarfan Othman Muhammad Aji Pangestu Mutasim Billah Muthiah, Dewi Muzdalifah, Muzdalifah Nandini , Atika Nelvira Juanmara Ardyansa Ni Ketut Sari Novel Karaman Nur Aini Fauziyah Nuraffandy, Achmad Naufal Nurfita, Etti Nurhediana, Silvana Dwi Nurul Widji Triana Oktavianingrum, Mursyidah Pangestu, Titan Obby Pasang, Timotius Pramuji, Faiq Hawaari Ahmad Prastica, Nita Purwanto Purwanto Puspitasari, Kurnia Putranto, Thomas T. Putri , Zahra Dzaki Roofia Rahmani, Tara Puri Ducha Reva Edra Nugraha Ristikawati, Anita Rohman Rosida Rosida Rosida Rosida Rosida Rosida Rosida, Rosida - S Suprihatin Salfana, Dian Rizka Sani Sania, Nabilla Silvana Dwi Nurherdiana Silvy Indah Safitri Sri Redjeki SRIE MULJANI Suriyanto Suriyanto, Suriyanto Susilowati sutiyono sutiyono Sutiyono, Sutiyono Syafsir Akhlus Tasya Vyra Putri Ariyani Trianna, Nurul Widji Utama, Shanita Agitiya Wahyudi, Bambang Wahyusi, Kindriari Nurma Winandri, Kautsar Rahman Windhy Mutiara Salsabillah Yahya A. Yogaswara, Rachmad Ramadhan Zafirah, Shakanti 'Aqilah