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SINTESIS PERAK NANOPARTIKEL MELALUI REDUKSI SPONTAN MENGGUNAKAN REDUKTOR ALAMI EKTRAK KULIT LEMON SERTA KARAKTERISASINYA SEBAGAI ANTIFUNGI DAN ANTIBAKTERI Widya Ernayati Kosimaningrum; Alia Badra Pitaloka; Afif Sena Hidayat; Wahidatun Aisyah; Syahrul Ramadhan; Malik Abdul Rosyid
JURNAL INTEGRASI PROSES VOLUME 9 NOMOR 2 DESEMBER 2020
Publisher : JURNAL INTEGRASI PROSES

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36055/jip.v9i2.9627

Abstract

Silver nanoparticle, Ag0, is a broad spectrum antimicrobial agent with a very low risk of resistance. In this study, silver nanoparticles, Ag0, were synthesized through the spontaneous reduction of Ag + solution using a natural reducing agent of lemon peel extract. Extraction was carried out at 60oC for 10 minutes in a water solvent. The extraction of lemon peel involves varying the mass of the lemon peel powder, namely 2.5; 5; 7.5; and 10 grams to produce varying concentrations of reducing agents. Synthesis of silver nanoparticles was carried out at 60oC for 20 minutes by mixing 0.1 M Ag + solution with the extract solution with various concentrations. The result of the synthesis is a dark brown to blackish colloidal solution which indicates the formation of Ag0 from micro to nanoparticles in the solution. The concentration of lemon peel extract is directly proportional to the amount of Ag0 formed, which is characterized by the colour of the solution. The Ag0 solution showed its effectiveness as an antifungal under five days of observation. The Ag0 solution also exhibits highly effective antibacterial properties based on testing against E. coli. ‘ 
PEMBUATAN CMC DARI SELULOSA ECENG GONDOK DENGAN MEDIA REAKSI CAMPURAN LARUTAN ISOPROPANOL-ISOBUTANOL UNTUK MENDAPATKAN VISKOSITAS DAN KEMURNIAN TINGGI Alia Badra Pitaloka; Nur Anis Hidayah; Asep Handaya Saputra; Mohammad Nasikin
JURNAL INTEGRASI PROSES VOLUME 5 NOMOR 2 Juni 2015
Publisher : JURNAL INTEGRASI PROSES

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1149.445 KB) | DOI: 10.36055/jip.v5i2.247

Abstract

Eceng gondok (Eichhornia crassipes) merupakan gulma perairan yang dapat mengganggu ekosistem air.Untuk mengurangi dampak negatif yang ditimbulkan berbagai upaya telah dilakukan dan salah satunya adalah dengan pemanfaatan eceng gondok sebagai bahan bakupembuatan Carboxymethyl Cellulose (CMC).Potensi eceng gondok sebagai bahan bakuCMC cukup besar karena kandungan selulosanya yang cukup tinggi. Proses pembuatan CMC ini diawali dengan isolasi selulosa eceng gondok. Selulosa yang dihasilkan kemudian dialkalisasi dengan menggunakan larutan NaOH 10% b/v dan 35% b/v. Tahap berikutnya adalah reaksi karboksimetilasi antara alkali selulosa  dan natrium monokloroasetat (NaMCA, ClCH2COONa) dalam suatu media reaksi. Pada penelitian ini digunakan campuran larutan isopropanol dan isobutanol sebagai media reaksi dengan variasi komposisi. Dari hasil penelitian diperoleh CMC dengan kondisi optimum pada konsentrasi NaOH 10% dengan nilai derajat substitusi (DS) tertinggi sebesar 1,49pada komposisi isopropanol-isobutanol 20:80 (v/v), kemurnian tertinggi 90,9% pada komposisi isopropanol-isobutanol 80:20 (v/v), dan viskositas tertinggi 157,5 cPpada komposisi isopropanol-isobutanol 50:50 (v/v).
Degradation of methyl ester sulfonate using TiO2 photocatalyst Muhammad Triyogo Adiwibowo; Ahmad Sukarya; Fauzi Ramdani Aryanto Putra; Marta Pramudita; Rudi Hartono; Alia Badra Pitaloka
Jurnal Teknika Vol 18, No 2 (2022): Available Online in November 2022
Publisher : Faculty of Engineering, Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36055/tjst.v18i2.16940

Abstract

One common domestic waste in the waters is detergent residue due to the daily habit of washing clothes. Thus, wastewater treatment is needed to purify the water. One of the methods is photocatalytic degradation. In this study, TiO2 nanoparticles were used to degrade methyl ester sulfonate (MES), one of the raw materials for making detergents. This study aims to investigate the effect of TiO2 concentration, reaction time, and light source on the MES degradation. The variations of the degradation tests included photocatalyst concentrations of 0.5, 1, and 1.5 mg/L, irradiation times of 1, 2, and 3 hours, and UV lamps and sunlight. The residual surfactant in water was analyzed using the Methylene Blue Active Surface (MBAS) method. The principle of this method is that MES will bind to methylene blue to form a complex blue compound so that its concentration can be quantified using a UV-Vis spectrophotometer. This study showed that the higher photocatalyst concentration increased the surfactant degradation from 11.97% to 33.91%, and the longer the degradation time, the more surfactant was degraded up to 41.56% after 3 hours. The sunlight source produces 55.72% degradation, more than a 10-watt UV lamp. The MES degradation follows the second-order reaction equation with a rate constant of 0.0963 L/mg.hour.
Tinjauan Literatur: Plastik Antimikrobial Ramah Lingkungan Untuk Kemasan Makanan Macarius Erwin Yuwono Kristanto; Rahmayetty Rahmayetty; Alia Badra Pitaloka
Jurnal Ilmiah Wahana Pendidikan Vol 9 No 11 (2023): Jurnal Ilmiah Wahana Pendidikan
Publisher : Peneliti.net

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5281/zenodo.8062176

Abstract

Plastic is a material that is widely used for the manufacture of various products. Plastic industrialization continues to be developed to meet human needs but this also has a negative impact. Plastic industrialization produces plastic waste which is a source of environmental damage. Plastic waste that can only decompose in a long time is not friendly and even becomes a threat to environmental sustainability. Departing from these problems, development and research related to plastic products that are able to provide added value but are environmentally friendly are continuously carried out. One example of the development of bioplastics is the research and development of biodegradable plastics for food packaging which contain antimicrobial properties. The application of antimicrobials to biodegradable plastics can be an added value because environmentally friendly plastic packaging can simultaneously maintain and protect food from being easily damaged or spoiled. Various kinds of antimicrobial agents have been studied, especially regarding their respective abilities against bacteria which are a source of food spoilage. This study uses a literature study on bacteria regarding descriptions and explanations and antimicrobial ingredients derived from organic and inorganic materials that are not harmful to health.
Extraction Of Flavonoid, Phenolic, And Saponin In Shallot Skin (Allium Cepa Var. Aggregatum) For Antibacterial Application Muhammad Triyogo Adiwibowo; Shintasya Tiara Firliyani; Nurul Ma'rifah; Nufus Kanani; Wardalia Wardalia; Alia Badra Pitaloka; Marta Pramudita
CHEMICA: Jurnal Teknik Kimia Vol 10, No 1 (2023): April 2023
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26555/chemica.v10i1.23425

Abstract

Shallot skin (Allium cepa var. aggregatum) contains secondary metabolites of flavonoid, phenolic, and saponin that can be antibacterial. This research was conducted by extracting the shallot skin using maceration and ultrasound-assisted methods with 3, 5, and 7 days for maceration extraction and 10, 20, and 30 minutes for ultrasonication-assisted extraction (UAE). The extract was then tested for phytochemical screening and analysis of its flavonoid, phenolic, and saponin levels. Three extracts with the best secondary metabolite compounds were then tested for the inhibitory power of the extracts against Escherichia coli through the diffusion method. The results showed that shallot skin extract contained flavonoid and phenolic compounds but not saponin. Based on the analysis of the levels of these compounds using UV-Vis spectrophotometry, three extracts with the highest flavonoid and phenolic content were obtained from maceration extraction for seven days, the UAE method for 20 minutes, and the UAE extraction method for 30 minutes. The extract using the UAE method has relatively higher flavonoid and phenolic content (6.93 and 2.59 ppm, respectively) than the extract using the maceration method (5.48 and 2.46 ppm, respectively), which is also considered more efficient in terms of time. A preliminary antibacterial activity test showed antibacterial activity in the shallot skin.
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

Abstract

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.
THE EFFECT OF UV LIGHT ON THE YIELD AND CHARACTERISTICS OF BIODIESEL FROM CANDLENUT OIL USING A TiO2-K2O/NATURAL ZEOLITE COMPOSITE Muhammad Triyogo Adiwibowo; Indar Kustiningsih; Alia Badra Pitaloka; Wardalia Wardalia; Tati Jumiarti; Hani Mulyani
JURNAL INTEGRASI PROSES Vol 12, No 1 (2023)
Publisher : JURNAL INTEGRASI PROSES

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36055/jip.v12i1.19881

Abstract

This study examines the effect of UV irradiation on the yield and physical characteristics of biodiesel from candlenut oil using a TiO2-K2O/natural zeolite composite. Natural zeolite was activated with KOH and impregnated with TiO2. The formed composite was analyzed with an X-ray diffractometer. Biodiesel was synthesized with candlenut oil to methanol molar ratio and catalyst loading (w/w oil) 1:4, 1:6, 1:8, and 2, 4, and 6%, respectively. The XRD analysis shows peak patterns of anatase and rutile TiO2, K2O, and zeolite. UV light can increase biodiesel yield, with the highest yield at 82.08% at oil to methanol molar ratio of 1:8 and a catalyst loading of 2%. The physical properties of biodiesel are in accordance with national standard SNI 7182:2015. GCMS results shows that the main components of fatty acid methyl ester from biodiesel are methyl oleate, methyl palmitate, and methyl linoleate.  
Utilization of Rice Husks as Green Amorphous Silica with Variations in the Addition of Sulfuric Acid and Citric Acid in the Acidification Process Marta Pramudita; Rosmiati Rosmiati; Mahulia Hasriyati; Widya Ernayatie; Alia Badra Pitaloka
World Chemical Engineering Journal VOLUME 10 NO. 1 JUNE 2026
Publisher : Chemical Engineering Department, Engineering Faculty, Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62870/wcej.v1i1.40736

Abstract

The acidification step in silica extraction from rice husks typically uses strong mineral acids, such as sulfuric acid, which pose safety risks and environmental concerns. Citric acid, a weak organic acid, is a safer and more environmentally friendly alternative for this process. This study aimed to produce green amorphous silica (GAS) from rice husk waste using the sol-gel method and to compare the effects of sulfuric acid and citric acid during the acidifying step. Rice husks were calcined at 700°C, acid-pretreated to pH 1, extracted with 1 M NaOH, and neutralized with either 1 M H₂SO₄ or 1 M C₆H₈O₇. The resulting silica powders were characterized using XRF, XRD, SEM-EDX, and FTIR. The SiO₂ content reached 95.22 % by mass with sulfuric acid and 93.59 % with citric acid. XRD revealed that sulfuric acid produced a poorly crystalline phase, whereas citric acid maintained a fully amorphous structure. SEM images showed uniform nanoparticles (~50–80 nm) for the sulfuric acid route, whereas citric acid produced more agglomerated clusters. FTIR spectra confirmed the presence of siloxane bonds in both samples; however, citric acid-derived silica exhibited residual carboxylate bands and less extensive condensation. Overall, sulfuric acid produced purer, more uniform silica suitable for high-performance applications. In contrast, citric acid proved a viable, greener alternative for preserving the amorphous state, suggesting that further process optimization could enhance its competitiveness in sustainable silica synthesis.
Diversifikasi Pangan Lokal Melalui Pelatihan Pembuatan Pangan Fungsional Berbasis Pati Talas Beneng Sri Agustina; Marta Pramudita; Dhena Ria Barleany; Alia Badra Pitaloka; Salsabila Salsabila; Rendy Muhammad Azizi; Sasikirana Puspitasari
ABDI: Jurnal Pengabdian dan Pemberdayaan Masyarakat Vol 8 No 2 (2026): Abdi: Jurnal Pengabdian dan Pemberdayaan Masyarakat
Publisher : Labor Jurusan Sosiologi, Fakultas Ilmu Sosial, Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/abdi.v8i2.1836

Abstract

Kegiatan pengabdian kepada masyarakat ini bertujuan untuk meningkatkan keterampilan masyarakat Desa Juhut, Kecamatan Karang Tanjung, Kabupaten Pandeglang, dalam mengolah Talas Beneng (Xanthosoma undipes K. Koch) menjadi produk pangan fungsional bernilai tambah tinggi. Kegiatan dilaksanakan dengan melibatkan sekitar 20 peserta dari kelompok ibu rumah tangga Desa Juhut. Metode pelaksanaan dilakukan secara partisipatif melalui tiga tahapan, yaitu persiapan, pelaksanaan pelatihan berbasis praktik langsung, dan evaluasi kualitatif melalui observasi, diskusi, serta testimoni peserta. Pelatihan difokuskan pada pembuatan mi, kukis, dan brownies dari pati Talas Beneng yang diperkaya dengan bahan bioaktif dan perisa alami, seperti bawang putih, cokelat, dan kopi. Penggunaan teknologi sederhana, seperti mixer, cetakan mi portabel, dan oven gas otomatis, diterapkan untuk meningkatkan kualitas produk dan kemudahan replikasi di tingkat rumah tangga. Hasil kegiatan menunjukkan peningkatan pemahaman, keterampilan teknis, dan motivasi kewirausahaan peserta. Kegiatan ini juga mendorong pengembangan produk pangan lokal bernilai ekonomi serta mendukung agenda ketahanan pangan dan ekonomi kreatif desa.
Pengembangan Integrated Energy Decision Framework Berbasis Iso 50001 dan Simulasi Proses Untuk Optimasi Sistem Utilitas Industri Petrokimia Daryanto Daryanto; Anton Irawan; Alia Badra Pitaloka; Yazid Bindar
Jurnal Indonesia Sosial Teknologi Vol. 7 No. 7 (2026): Jurnal Indonesia Sosial Teknologi
Publisher : Publikasi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59141/jist.v7i7.9213

Abstract

Penerapan ISO 50001:2018 melalui energy review telah banyak digunakan untuk mengidentifikasi Energy Baseline (EnB), Energy Performance Indicator (EnPI), dan Significant Energy Use (SEU), namun pendekatan ini belum mampu memberikan rekomendasi kondisi operasi optimum untuk meningkatkan efisiensi energi secara terukur. Penelitian ini bertujuan mengembangkan Integrated Energy Decision Framework yang mengintegrasikan energy review dengan simulasi proses sebagai dasar pengambilan keputusan operasional pada sistem utilitas industri. Studi dilakukan di Plant C industri petrokimia melalui tahapan data cleansing, perhitungan konsumsi energi, penyusunan EnB dan EnPI menggunakan regresi linier, serta identifikasi SEU melalui analisis Pareto. Unit absorption refrigerator yang teridentifikasi sebagai SEU dimodelkan menggunakan perangkat lunak simulasi proses dan dioptimasi melalui sensitivity analysis terhadap temperatur generator, temperatur cooling water, dan laju alir refrigeran. Hasil penelitian menunjukkan bahwa peningkatan laju alir refrigeran memberikan kinerja terbaik dengan penurunan konsumsi steam sebesar 6,4–11,9% dan peningkatan Coefficient of Performance (COP) sebesar 7,6–14,9%. Steam ekses hasil optimasi selanjutnya dapat dimanfaatkan untuk meningkatkan pembangkitan listrik melalui steam turbine generator atau mengurangi konsumsi gas alam pada boiler sesuai kebutuhan utilitas. Integrasi energy review dan simulasi proses terbukti menghasilkan kerangka pendukung keputusan yang lebih efektif dibandingkan pendekatan konvensional, sehingga mampu meningkatkan efisiensi energi sekaligus memberikan manfaat ekonomi pada sistem utilitas industri. Penelitian ini berkontribusi pada pengembangan ilmu manajemen energi industri melalui integrasi sistem manajemen energi berbasis ISO 50001 dengan optimasi proses, serta menyediakan dasar ilmiah bagi pengambilan keputusan operasional yang adaptif dalam meningkatkan efisiensi energi dan menurunkan biaya operasi pada industri kimia dengan sistem utilitas terintegrasi.