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Chemical Engineering, Engineering Faculty, University Of Pembangunan Nasional “Veteran” East Java
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Control of Corrosion Rate of Metal Alloys: SS 304 And SS 201 Using Phosphate Inhibitor in Nacl 3.5% AR Yelvia Sunarti; Isni Utami; A. Fani Dwiyulianty Fariadi; Arfinka Pinakesti; Dwi Hery Astuti; Sani
International Journal of Eco-Innovation in Science and Engineering (IJEISE) Vol. 4 No. 2 (2023): IJEISE
Publisher : International Journal of Eco-Innovation in Science and Engineering (IJEISE)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33005/ijeise.v4i2.117

Abstract

Corrosion is metal damage caused by electrochemical reactions with its environment. This environment can be water, air, gas, acid solution, salt solution, and others. Metals are highly active in producing an oxide layer on the metal surface under the influence of an aerobic environment. Metal corrosion is a process where the action of the surrounding media damages metal materials by the introduction of corrosion ions. This study aims to determine the best conditions for phosphate in controlling the rate of corrosion and Knowing the inhibition of phosphate on controlling the rate of corrosion. The materials used were stainless steel 201, stainless steel 304, and phosphate as an inhibitor. Meanwhile the solution NaCl 3.5% as a corrosive media environment and distilled water. Based on this research, the best phosphate concentration in reducing the corrosion rate of stainless steel 201 and 304 is 100 ppm with a reduction in the corrosion rate of stainless steel 201 of 0.022312 mpy with an inhibition percentage of 89.68%, and a reduction in the corrosion rate of stainless steel 304 by 0.045694 mpy with the percentage of inhibition is 94.027%. The corrosion rate of 304 stainless steel is lower than that of 201 stainless steel caused by differences in the Cr element composition of each metal. Stainless steel 304 contains 18.24% Cr while stainless steel 201 contains 13.00% Cr. The lower the Cr content in stainless steel, the stainless steel will be more susceptible to corrosion.
Pembuatan Deodorant Semprot dari Ekstrak Sereh Penghilang Bau Badan Billah, Mu’tasim; Astuti, Dwi Hery; Utami, Isni; Susilowati; Nandini, Atika
abdimesin Vol. 3 No. 1 (2023): Abdi-mesin
Publisher : UPN "Veteran" Jawa Timur

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33005/abdimesin.v3i1.43

Abstract

Bau badan merupakan hal yang sering dijumpai pada kehidupan sehari – hariyang bisa mengganggu kenyamanan orang lain. Umumnya bau badan bersumber daribagian ketiak dan bagian lainnya pada tubuh ketika berkeringat. Penyebab bau badantersebut adalah aktivitas bakteri Staphylococcus epidermis yang mudah berkembangbiak pada kulit dan selaput lendir manusia. Tanaman Sereh (Cymbopogon nardus L)merupakan sejenis tumbuhan rumput – rumputan dan memiliki banyak manfaat, jikadiproses menjadi ekstrak sereh, diantaranya adalah sebagai anti mikroba. Deodorantsemprot merupakan salah satu alternatif produk yang dapat digunakan untuk mengatasibau badan yang disebabkan oleh bakteri. Pada kegiatan pengabdian kepada masyarakatini, diharapkan masyarakat dapat mengaplikasikan sehingga menumbuhkan kreatifitas danproduktivitas dalam melakukan kegiatan sehari – hari.
Peningkatan Kualitas Pertanian Salak di Desa Galengdowo Melalui Pembuatan Pupuk Organik Cair Rahmawati, Alrista; Billah, Mu’tasim; Utami, Isni
Jurnal Altifani Penelitian dan Pengabdian kepada Masyarakat Vol. 3 No. 5 (2023): September 2023 - Jurnal Altifani Penelitian dan Pengabdian kepada Masyarakat
Publisher : Indonesian Scientific Journal

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59395/altifani.v3i5.487

Abstract

Edukasi pemberian kompres aloevera sebagai penurun demam anak balita. Demam merupakan kenaikan suhu tubuh diatas normal, dinyatakan normal apabila suhu tubuh berada pada 36,5°C – 37,5°C. Demam pada anak berdampak terhadap dehidrasi, kekurangan oksigen, kerusakan neurologis dan kejang demam. Salah satu perawatan nonfarmakologis menurunkan suhu tubuh penderita demam yaitu dengan kompres aloevera yang mengandung 95% air yang dapat menyerap suhu tubuh yang tinggi pada anak. Sasaran pengabdian kepada masyarakat ini adalah kader dan Ibu balita di Posyandu Delima Desa Pliken. Tujuan dari pengabdian kepada masyarakat ini untuk menambah tingkat pengetahuan kader dan ibu di posyadu Delima Pliken. Kegiatan yang dilakukan yaitu dengan metode ceramah menggunakan power point. Pelaksanaan kegiatan ini terdiri dari dua tahap dimana pertemuan pertama dihadiri 4 kader dan 41 ibu sedangkan pertemuan kedua dihadiri 4 kader dan 36 ibu. Kegiatan berupa pengisian kuesioner pre test dilanjutkan pendidikan kesehatan, sedangkan pertemuan kedua yaitu evaluasi kuesioner post test tentang pemberian kompres aloevera. Hasil kegiatan pengabdian kepada masyarakat ini didapatkan nilai rata-rata pengetahuan sebelum pendidikan kesehatan yaitu 66,8 dan setelah pendidikan kesehatan yaitu 80,25 hal ini menunjukan bahwa terdapat kenaikan nilai rata-rata sejumlah 13,45. Mayoritas peserta mengalami peningkatan pengetahuan, yaitu sebanyak 39 orang (98%). Meskipun demikian masih ada 1 orang (2%) yang pengetahuannya tetap dan 0% untuk tingkat pengetahuan menurun. Dapat disimpulkan kegiatan pendidikan kesehatan dengan metode ceramah dapat meningkatkan pengetahuan kader dan ibu tentang edukasi pemberian kompres aloevera sebagai penurun demam anak.
The Effect of Resin and NH4OH Addition in The Making of Ammonium Silica Fertilizer from Geothermal Sludge Wahyusi, Kindriari Nurma; Nandini, Atika; Utami, Lucky Indrati; Siswanto; Utami, Isni; Mardhiyah, Nurul; Nofita, Dian
International Journal of Eco-Innovation in Science and Engineering (IJEISE) Vol. 2 No. 1 (2021): IJEISE
Publisher : UPN Veteran Jatim

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33005/ijeise.v2i01.29

Abstract

Geothermal sludge is a waste product from geothermal where it contains SiO2 which can be used as fertilizer. In this study, the making of silica ammonium fertilizer was carried out by taking salicy acid from geothermal sludge by extracting and adding resin which was then modified with NH4OH addition. Extraction was done using 1000 ml of KOH 1 N to dissolve 60 grams of Geothermal Sludge. Resins are added with variations in resin weight, namely, 5, 10, 20, 30, and 40 grams. NH4OH was added with variations in concentrations namely 3, 6, 9, 12 and 15% with a ratio of filtrate and NH4OH solution of 1: 1. The resulting ammonium silica inorganic liquid fertilizer products were analyzed for free silica and ammonia levels. The results of this study indicate that the levels of free silica and ammonia are influenced by the weight of the resin used and the concentration of ammonium hydroxide mixed. From the results of the research, it was found that inorganic silica liquid fertilizer with the highest SiO2 content in ammonium silica liquid fertilizer occurred when adding 20 grams of resin with the addition of NH4OH with a concentration of 15% which was 1,831.87 mg / L while the highest NH3 content in fertilizer liquid ammonium silica occurs when adding 40 grams of resin with the addition of NH4OH with a concentration of 15% which is equal to 252,312.80 mg / L.
Optimization of Liquid Fructose Sugar Production from Cassava Peel Waste using the Isomerization Process Debora, Ratu Mayoreta; Hermawan, Dicky Candra; Utami, Isni; Nurcholis, Fahcrul
Chempublish Journal Vol. 8 No. 1 (2024): Chempublish Journal
Publisher : Department of Chemistry, Faculty of Science and Technology Universitas Jambi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22437/chp.v8i1.33117

Abstract

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%.
Co-Authors A. Fani Dwiyulianty Fariadi A. R Yelvia Sunarti Aditya Irfansyah Akbar, Dika Restu AR Yelvia Sunarti Arfinka Pinakesti Astuti, Dwi Hery Billah, Mu’tasim Cakradetha, Ivenda Sasquea Debora, Ratu Mayoreta Dian Nofita Dwi Hery Astuti Fachrul Nurcholis Hermawan, Dicky Candra Kindriari Nurma Wahyusi Kuspambudijaya, Akbar Dwi Lucky Indrati Utami Mardhiyah, Nurul Maulana, Mochamad Titus Mega Rosilina Mochamad Titus Maulana Nandini , Atika Nandini, Atika Nofita, Dian Nurcholis, Fahcrul Nurul Mardhiyah Rahmawati, Alrista Rosilina, Mega Sani Sani Sani Santi, Sintha Soraya Siswanto Siswanto SRIE MULJANI Sunarti, A.R Yelvia Suprianti, Lilik Suriyanto Suriyanto, Suriyanto Susilowati sutiyono sutiyono