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Penggunaan Ekstrak Daun Pepaya Sebagai Inhibitor Korosi Baja Karbon Dalam Lingkungan Crude Oil Muhammad Libasut Taqwa; Irwan Irwan; Pardi Pardi
Jurnal Teknologi Vol 21, No 1 (2021): April 2021
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (167.097 KB) | DOI: 10.30811/teknologi.v21i1.2193

Abstract

The study of papaya leaf extract as a carbon steel corrosion inhibitor in a crude oil environment has been investigated using a weight-loss method. The effects of papaya leaf extract concentrations and immersion time have been employed to investigate the corrosion rate, with a variation of papaya leaf extract concentrations of 0, 1, 2, 3, 4, and 5 % volume and immersion time of 1, 2, 3, 4 and 5 hours. The results showed that increasing papaya leaf extract concentrations decreased the corrosion rate of carbon steel in a crude oil environment. While the increase of immersion time enhances the carbon steel corrosion rate in a crude oil environment. The lowest rate of corrosion obtained was 4.0152 mpy using papaya leaf extract concentration of 5 % volume at 5 hours immersion time. The inhibition efficiency also increased with increasing concentrations of papaya extract and immersion time. The highest inhibition efficiency was 65.54% at the concentration of papaya leaf extract 5% vol. at 5 hours immersion time.
Penggunaan Amilum sebagai Pelapis Anti Korosi pada Baja Karbon dalam Lingkungan Asam Klorida 0,5 M Muhammad Salahuddin; Irwan Irwan; Cut Aja Rahmawati
Jurnal Teknologi Vol 22, No 1 (2022): April 2022
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/teknologi.v22i1.2876

Abstract

The purpose of this paper was to determine the affect of amylum concentration and immersion time on the corrosion rate. Amylum is used as an anticorrosive coating on carbon steel in 0,5 M hydrochloric acid  environment. Amylum concentration and immersion time affect the corrosion rate. The longer immersion time, the corrosion rate increases while the higher the concentration, the corrosion rate decreases. The highest corrosion rate was obtained at 3.58 mpy while the lowest corrosion rate was 1.24 mpy, Corrosion rates in metals can be prevented by the coating method
Ekstrak Kulit Kayu Manis sebagai Inhibitor Korosi pada Baja Karbon dalam Lingkungan Air Laut Ihtisyamuddin .; Selvie Diana; Irwan Irwan
Jurnal Teknologi Vol 23, No 2 (2023): Oktober 2023
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/teknologi.v23i2.3837

Abstract

The utilization of cinnamon bark extract as a corrosion inhibitor of low-carbon steel in seawater media was studied. The purpose of the research was to investigate the effect of cinnamon bark extract concentration and immersion time on the corrosion rate of carbon steel in seawater environments. The study was conducted at different concentrations of cinnamon bark extract, i.e. 0,1, 2, 3, 4, and 5 mL/L, and immersion time. i.e. 5, 10, 15, 20, and 25 days. The research was investigated using standard laboratory corrosion testing material according to ASTM G31-72. The effect of cinnamon bark extract and immersion time was examined on the corrosion rate and efficiency inhibition. The results showed that the concentration of cinnamon bark extract and immersion time influenced the corrosion rate of carbon steel in seawater media. Increasing of concentration of cinnamon bark extract and immersion time decrease of corrosion rate. The lowest corrosion rate obtained was 0.0492 mpy which was received at a cinnamon bark extract of 5 mL/L and immersion time of 25 days. The efficiency inhibition of cinnamon bark extract was increased with increasing immersion time. The highest efficiency was 54,48%.
PEMBUATAN SISTEM PENYEDIA AIR WUDHU’ (SPAW) UNTUK BALAI PENGAJIAN BABUL MUTA’ALIMIN DESA BLANG AWE Munawar Munawar; Syafruddin Syafruddin; Irwan Irwan; Alfian Putra; Munardy Munardy
Jurnal Vokasi Vol 7, No 3 (2023): Jurnal Vokasi (November)
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/vokasi.v7i3.3995

Abstract

Balai pengajian Babul Muta’allimin merupakan salah satu balai pendidikan agama yang terdapat di Desa Blang Awe, Kecamatan Syamtalira Bayu, Kabupaten Aceh Utara. Sekalipun sudah berkiprah lebih dari 20 tahun, balai pengajian Babul Muta’allimin sampai saat ini sama sekali tidak memiliki sarana wudhu yang memadai untuk santri. Padahal, sarana tersebut meruapakan salah satu kebutuhan utama bagi para santri yang belajar AlQurán dan sholat di balai pengajian tersebut. Kegiatan pengabdian kepada masyarakat ini bertujuan mengembangkan suatu sistem Penyedia Air Wudhu (SPAW) berbasis sumber daya lokal, yang dapat dikelola dan dirawat secara mandiri oleh mitra. Kegiatan PkM dilaksanakan dalam 3 (tiga) tahapan, meliputi: (1) Pengembangan Sistem Penyedia Air Wudhu (SPAW) untuk mitra; (2) Pembekalan pengetahuan dasar tentang operasional dan perawatan paket teknologi yang dikembangkan, serta; (3) Evaluasi keberhasilan kegiatan, menggunakan kuisioner. Setelah kegiatan PkM diselesaikan, suatu Sistem Penyedia Air Wudhu’ (SPAW) berbasis sumber daya lokal sudah tersedia untuk mitra kegiatan. Sistem tersebut mampu menyediakan air wudhu’dengan kapasitas 2,14 liter/menit pada 7 titik akses terintegrasi, dengan kualitas air yang memenuhi baku mutu air untuk keperluan hygiene sanitasi menurut Kepmenkes RI No. 32 tahun 2017. Hasil evaluasi kepuasan mitra menunjukkan bahwa mitra memberi apresiasi positif terhadap kegiatan PkM yang telah dilaksanakan.
Innovation in Liquid Potassium Fertilizer Made from Seawater and Coconut Husk (Cocos nucifera) Siti Rismariam; M. Yunus; Irwan Irwan
Jurnal Teknologi Vol 26, No 1 (2026): April 2026
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/teknologi.v26i1.8480

Abstract

This study innovates a liquid potassium fertilizer utilizing seawater and coconut coir as sustainable and economical alternatives to inorganic fertilizers. The research aimed to investigate the effects of varying maceration times (4, 8, 12, 16, and 20 days) and coconut coir weights (10, 15, 20, 25, and 30 grams) on the characteristics of the resulting fertilizer, specifically its pH, Total Dissolved Solids (TDS), and K₂O content. The production process involved seawater collection and filtration, followed by coconut coir preparation (soaking, drying, size reduction, and weighing). Maceration was then performed using seawater and varied coconut coir weights over different time periods. The liquid fertilizer underwent pH, TDS, and K₂O analyses. Key findings indicate that pH decreased with increased coir weight and maceration time, ranging from 8.47 to 7.33, remaining safe for plants. TDS increased with longer maceration and higher coir amounts, reaching 6000 ppm after 20 days with 30 grams of coir, signifying enhanced dissolved compound extraction. The highest K₂O content of 0.132% was achieved at 16 days of maceration with 30 grams of coconut coir, indicating optimal potassium dissolution. This suggests that a combination of seawater and coconut coir can produce a liquid potassium fertilizer with promising characteristics, offering an eco-friendly and cost-effective agricultural solution.
Pendugaan Umur Simpan Kerupuk Opak Singkong Dengan Metode Accelerated Shelf Life Testing (ASLT) Model Arrhenius Muhammad Alghifari Ramadhan; Elfiana Elfiana; Irwan Irwan
Jurnal Riset, Inovasi, Teknologi & Terapan Vol 4, No 1 (2025): Desember
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/ristera.v4i1.8628

Abstract

Shortening is a fat product used in the food industry to improve the texture and quality of the final product. The use of vegetable fats and olein as raw materials offers a healthier and environmentally friendly alternative to animal fats. This research aims to develop a shortening emulsifier formula made from stearin and olein using lecithin, to increase product stability and quality. In this research, white butter (shortening) was made using raw materials that had gone through neutralization, bleaching, deodorization and fractionation methods, and the final result of the white butter product used a mixing method, namely by mixing olein and stearin produced from the Teaching Factory laboratory, with raw materials 50 g olein and 100 g stearin, by varying the lecithin content, namely 2.5 g, 3.0 g, 3.5 g, 4.0 g, 4.5 g and with stirring time for 3.5 minutes, 4 .0 minutes, 4.5 minutes, 5.0 minutes, 5.5 minutes. The best results were obtained at a lecithin level of 3.0 grams and a stirring time of 5.0 minutes. With a melting point value of 49.5°C, water content of 0.19%, free fatty acids of 0.19%, these values meet SNI. and organoleptic with an average value of 4.3 (very bright) for color, 4.6 (very not rancid) for aroma, and 3.7 (very soft) for texture. From the results of the microbial contamination test, there were 7 colonies in the sample with a lecithin content of 3.0 g with a stirring time of 5.0 minutes, and 6 colonies in the 4.0 g sample with a stirring time of 5.5 minutes. This value still meets the SNI standard for shortening against microbial contamination, namely 10 Apm/gram.
Co-Authors Alfian Putra Cut Aja Rahmawati Elfiana Elfiana, Elfiana Ihtisyamuddin . M Munawar M. Yunus Muhammad Alghifari Ramadhan Muhammad Libasut Taqwa Muhammad Salahuddin Munardy Munardy Pardi Pardi Selvie Diana Siti Rismariam Syafruddin Syafruddin