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All Journal JURNAL KIMIA SAINS DAN APLIKASI Jurnal Teknik Kimia Eksergi: Chemical Engineering Journal Jurnal Penelitian Pertanian Terapan Briliant: Jurnal Riset dan Konseptual JMM (Jurnal Masyarakat Mandiri) JPP IPTEK (Jurnal Pengabdian dan Penerapan IPTEK) Jurnal Abdi Insani Nusantara Science and Technology Proceedings International Journal Of Science, Technology & Management (IJSTM) Jurnal Mandala Pengabdian Masyarakat International Journal of Eco-Innovation in Science and Engineering (IJEISE) International Journal of Community Service AJARCDE (Asian Journal of Applied Research for Community Development and Empowerment) Sinergi Polmed : Jurnal Ilmiah Teknik Mesin International Journal of Science and Environment Jurnal Indonesia Sosial Teknologi Journal Serambi Engineering (JSE)
Suprianti, Lilik
Chemical Engineering Department, Universitas Pembangunan Nasional “Veteran” Jawa Timur, Surabaya, 60294, Indonesia
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Understanding the production and reduction of barium sulfate crystals through the use of additives and a controlled stirring rate N. Karaman; R. S. Maulida; N. Fariana; A. P. Bayuseno; Lilik Suprianti
Jurnal Indonesia Sosial Teknologi Vol. 5 No. 10 (2024): Jurnal Indonesia Sosial Teknologi
Publisher : Publikasi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59141/jist.v5i10.7022

Abstract

Barium sulfate crystals are minerals responsible for scaling in piping systems. Controlling the growth of these crystals can use additives (FeCl2 and SrCl2) and varying agitation speeds. The research was to optimize the impact of additives and agitation speed on the results of crystal form using RSM through Minitab 19 with Box-Behnken Design. The optimum conditions using additive FeCl2 at a concentration of 25 ppm, a stirring speed of 120 rpm for 30 minutes, and a coefficient of determination (R2) of 90.995 provided 0.4485 gr of barium sulfate crystals. The optimum conditions, however, used SrCl2 additives at a concentration of 20.2049 ppm and a stirring speed of 459.394 rpm for 30 minutes, yielding 0.4345 g of barium sulfates with a coefficient of determination (R2) of 91.41%. The results of crystallizing barium sulfate without additives appear to be superior to those obtained with additives in terms of production. In contrast, additives of FeCl2 and SrCl2 can inhibit barium sulfate formation, resulting in a reduction in crystal mass
Synthesis of Hydroxyapatite From Chicken Bones Using the High Temperature Method Riyanda Bagus Setiawan; Faishal Zhafran Mumtaz; Lilik Suprianti; Ramadhani Mahendra Kusuma
AJARCDE (Asian Journal of Applied Research for Community Development and Empowerment) Vol. 10 No. 1 (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.v10i1.869

Abstract

This study investigates the syntesys of hydroxyapatite (HAp) from chicken bone waste, which is abundantly available due to high poultry production, using a high-temperature method. The objective of this study was to determine the effect of variations in sintering temperature (300, 400, 500, and 600°C) and sintering time (3, 4, 5, 6, and 7 hours) on the yield and Ca/P ratio of the HAp produced. The prepared chicken bone powder was first calcined at 900°C for 3 hours before sintering. The results showed that the optimal conditions were 600°C for 7 hours, characterized by a change in the sample's colour to white and a yield of 69%. XRF analysis confirmed the formation of HAp with a Ca/P ratio of 1.69. It was concluded that a sintering temperature of 600°C for 7 hours is optimal for producing pure HAp from chicken bone waste. Contribution to Sustainable Development Goals (SDGs):SDG 3: Good Health and Well-beingSDG 9: Industry, Innovation and InfrastructureSDG 12: Responsible Consumption and Production
Characterization of Polylactic Acid/Chitosan/Cellulose Nanofibers for Wound Dressing Applications Belinda Laulista; Desy Miftachul; Lilik Suprianti; Tri Widjaja; Aisyah Alifatul Zahidah Rohmah; Citra Yulia Sari
Eksergi Vol 23 No 2 (2026)
Publisher : Prodi Teknik Kimia UPN "Veteran" Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31315/eksergi.v23i2.16532

Abstract

Effective wound care requires dressing materials that provide physical protection while actively encouraging tissue regeneration. This research investigates the development and characterization of biocomposite nanofiber membranes composed of polylactic acid (PLA), chitosan, and cellulose, synthesized via the electrospinning method at an optimized operating voltage of 20 kV. The study aimed to identify the optimal material ratio that balances mechanical durability with surface wettability. Comprehensive evaluations included Scanning Electron Microscopy (SEM), Fourier Transform Infrared (FTIR), water contact angle (WCA) measurements, and mechanical testing. The results demonstrate that the integration of chitosan and cellulose significantly refined fiber morphology and wettability. The optimal variant with a composition of 90:5:5 wt.% (PLA:chitosan:cellulose) achieved a WCA of 98.64°, indicating that the hydrophobicity was maintained relative to pure PLA. M orphologically, the composite fibers were uniform and bead-less, with a mean diameter reduction of 36.2% (from 517.12 nm in pure PLA to 329.68 nm). FTIR spectra confirmed successful component incorporation through characteristic amide and hydroxyl bands. Mechanically, the composite membrane exhibited a superior synergy between strength and flexibility, achieving a yield strength of 0.06 MPa and a significant elongation at break of 80.36%. These findings suggest that the 90:5:5 formulation successfully bridges the gap between mechanical durability and the high surface area-to-volume ratio required for advanced, biodegradable wound care applications.
Delignifikasi Kulit Singkong Menggunakan Pelarut Alkali dengan Sonication Assisted Rachmawati, Diannita Tri; Sayyaf, Marchelino Farhan; Suprianti, Lilik
Jurnal Serambi Engineering Vol. 11 No. 2 (2026): April 2026
Publisher : Faculty of Engineering, Universitas Serambi Mekkah

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Abstract

Limbah kulit singkong mengandung selulosa yang berpotensi untuk dimanfaatkan sebagai produk bernilai ekonomis seperti bioethanol guna bahan bakar terbarukan. Penelitian ini bertujuan untuk meningkatkan kadar selulosa dengan proses delignifikasi atau degradasi lignin pada kulit singkong menggunakan bantuan sonikasi dengan variasi daya sonikasi (0; 30; dan 60 watt) dan waktu delignifikasi (30; 50; dan 70 menit). Analisis kadar selulosa yang telah lepas dari lignin dilakukan dengan metode Chesson-Datta. Hasil penelitian menunjukkan kadar lignin tertinggi (24,954%) diperoleh pada daya sonikasi 60 watt dan waktu delignifikasi 30 menit, sedangkan kadar selulosa tertinggi (75,180%) diperoleh pada daya sonikasi 60 watt dan waktu delignifikasi 70 menit. Spektrum FTIR mengkonfirmasi adanya beberapa gugus yang dimiliki lignin (COOH, CH2, dan CH3) dimana mengindikasikan lignin masih banyak terbentuk pada daya sonikasi tersebut. Penampakan morfologi melalui uji SEM juga mengkonfirmasi adanya perubahan morfologi permukaan kulit singkong akibat penambahan sonikasi. Secara keseluruhan, kondisi optimum diperoleh pada daya sonikasi 60 watt dengan waktu delignifikasi 70 menit. Kadar selulosa yang tinggi berpotensi sebagai penghasil gula reduksi yang tinggi dan meningkatkan fermentasi bioethanol.
Synthesis of Calcium Potassium Phosphate from Acetylene Gas Waste Using the Dissolution-Precipitation Method Bernice Barbarossa Adine Romansa Patty; Reyka Dinar Aulia; Ketut Sumada; Lilik Suprianti
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.v10i2.893

Abstract

This study investigates the synthesis of calcium potassium phosphate (CaKPO?) composite using acetylene waste from acetylene gas production as a sustainable calcium source. The material was produced through a dissolution-precipitation process using phosphoric acid and potassium hydroxide, with variations in the mass of acetylene waste and precipitation pH. The results demonstrate that pH strongly influences yield, elemental composition, and crystal morphology, with the highest CaKPO? yield achieved at pH 5. SEM-EDX analyses reveal that low pH conditions favor calcium-rich, irregular crystal structures, while higher pH promotes potassium incorporation and the formation of more ordered crystalline domains. Overall, the study highlights the potential of acetylene waste valorisation for developing multinutrient fertiliser materials and supports the advancement of environmentally responsible resource use in line with the Sustainable Development Goals. Contribution to Sustainable Development Goals (SDGs):SDG 2: Zero HungerSDG 9: Industry, Innovation, and InfrastructureSDG 12: Responsible Consumption and ProductionSDG 13: Climate Action
Enhancing Vinasse Treatment Efficiency using Electro-Fenton: The Role of Electrode Thickness and Power Supply Voltage Lilik Suprianti; Friska Nur Cahyani; Andreas Deardo HP; Kindriari Nurma Wahyusi; Nindia Noor Indah
International Journal of Science and Environment (IJSE) Vol. 6 No. 2 (2026): May 2026
Publisher : CV. Inara in Colaboration with www.stie-sampit.ac.id

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51601/ijse.v6i2.478

Abstract

The production of ethanol from molasses generates vinasse as a by-product of the distillation process. Vinasse waste produced by PT Energi Agro Nusantara contains COD and BOD levels of 910.5 ppm and 460.5 ppm, respectively, which significantly exceed the maximum limits set by wastewater quality standards, necessitating treatment. One treatment method is the use of Advanced Oxidation Processes (AOPs), which utilize hydroxyl radicals to oxidize organic pollutants in vinasse. One such process is the electro-Fenton process. In this study, 500 ml of vinasse was placed in a beaker and stirred for 90 minutes. A 25 ml addition of hydrogen peroxide was made, with a 2 cm gap between the iron electrode plates. Voltage variations of 3V, 6V, 9V, and 12V, along with electrode thicknesses of 2 mm, 3 mm, 4 mm, 5 mm, and 6 mm, were tested. COD and BOD levels were analyzed using the titrimetric method. The results showed that increasing the voltage and electrode thickness reduced COD and BOD levels, while the percentages of COD and BOD removal increased. The highest voltage (12V) and electrode thickness (6 mm) yielded the lowest final COD and BOD values of 163.5 ppm and 88.9 ppm, respectively, with COD removal at 82% and BOD removal at 81%.
Co-Authors A. P. Bayuseno A.P. Bayuseno Aditya Irfansyah Aisyah Alifatul Zahidah Rohmah Alfian Chandra Ayuswantana Andreas Deardo HP Aqil, Ubaidillah Astuti, Dwi Hery Ayuswantana, Alfian Chandra Bambang Wahyudi Belinda Laulista Bernice Barbarossa Adine Romansa Patty Billah, Mu’tasim Caecilia Pujiastuti Chandra Ayuswantana, Alfian Citra Yulia Sari Delfian Lutfiananda Desy Miftachul Diah Nur Fitri Midayoga Dyah Suci Perwitasari Ellyn Evina Ellys Simanjuntak Erliyanti, Nove Kartika Erna Sulistyowati Fachrul Nurcholis Faishal Zhafran Mumtaz Fastha Aulia Pradhani Friska Nur Cahyani Giritama Wibowo, Hendi Hervina Puspitosari Hervina Puspitosari, Hervina ISNI UTAMI J. Jamari Jariyah Jariyah Ketut Sumada Ketut Sumada Khafid Ubay Ilyas Kindriari Nurma Wahyusi L.Urip Widodo, Yohandrik Novel Karaman Mustofa, Arya N. Fariana N. Karaman Nindia Noor Indah Noni Aulia Novananda, Ajie Nufus, Wahyu Qur'ani Nufus, Wahyu Qurani Nur Annisa Nuraini, Adila Silmi Perwitasari, Rida Pingky Fantika Wulandari Pudji W, Endang Pujiastuti, Caecilia R. S. Maulida Rachmawati, Diannita Tri Ramadhani Mahendra Kusuma Reda Rizal Reyka Dinar Aulia Rida Perwita Sari Rida Perwitasari Riyanda Bagus Setiawan S Suprihatin Salsabil Husodo, Amani Sani Sayyaf, Marchelino Farhan Siswahyudianto SRIE MULJANI Sukamto Suprihatin Suprihatin Susilowati, Fifit Tri Widjaja Trianna, Nurul Widji Vica Brilliany Sanjaya