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All Journal Reaktor Jurnal Sains dan Teknologi Reaksi Jurnal Vokasi Jurnal Teknologi Jurnal Riset, Inovasi, Teknologi & Terapan
Cut Aja Rahmawati
Jurusan Teknik Kimia Politeknik Negeri Lhokseumawe
Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Social Sciences

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PELATIHAN PENGOLAHAN LIMBAH IKAN MENJADI PRODUK MAKANAN Faridah Faridah; Saifuddin Saifuddin; Salmiyah Salmiyah; Cut Aja Rahmawati; Yuniati Yuniati
Jurnal Vokasi Vol 1, No 1 (2017): Jurnal Vokasi
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (529.778 KB) | DOI: 10.30811/vokasi.v1i1.561

Abstract

Aplikasi ipteks program hibah desa ini telah dilakukan di desa Jambo Timu kecamatan Blang Mangat, kota Lhokseumawe dengan memanfaatkan limbah ikan dalam proses pembuatan makanan riangan. Produk makanan yang dihasilkan adalah abon ikan. Ikan merupakan salah satu sumber daya alam yan dihasilkan di desa tersebut, karena sebagian besar penduduk di desa tersebut adalah ikan. Selama ini ikan yang berlebih atau sebagian telah menjadi limbahnya kurang dimanfaatkan menjadi sumber makanan yang memiliki nilai ekonomis. Pelatihan ini dilakukan bagikelompok nelayan dan kelompok ibu-ibu pkk di desa JamboTimu Kota Lhokseumawe. Desa Jambo Timu merupakan salah satu desa yang berada di kota Lhokseumawe. Desa tersebut terletak di pingir pantai kota Lhokseumawe. Penduduk di desa Jambo Timur 70% adalah nelayan.Selama ini hasil tanggkapan ikan masih belum banyak dimanfaatkan menjadi nilai ekonomis. Selama ini ikan hasil tangkapan seperti ikan tongkol yang cukup banya kalau musim panen ikan tongkol, ikankecil-kecil dan ikan yang jarang laku di jual belum dimanfaatkan, terkadang di buangsaja. Oleh sebabitu, pengabdian inidilakukan ingin melatih para kelompok nelayan dan kelompok ibu-ibu pkk dengan memanfaatkan limbah ikan menjadi produk makanan ringan yang memiliki nilai ekonomis. Diharapkan darihasil pelatihan ini para nelayan dan ibu pkk bisa memanfaatkan limbah ikan menjadi produk makanan yang dapat meningkatkan pendapatan penduduk di desa tersebut.Kata Kunci : Limbahikan, nelayan, ibu-ibu, pkk, produk, makanan
THE EFFECT OF UTILIZING IE KULOH SIRA, IE ASAM SUNTI, AND CORNELA ON THE CHARACTERISTICS OF SILK TOFU Salmyah, S; TA, Cut Fatmawati; Haziri, Ahmad Abrar; Rahmawati, Cut Aja
Jurnal Sains dan Teknologi Reaksi Vol 22, No 01 (2024): JURNAL SAINS DAN TEKNOLOGI REAKSI
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/jstr.v22i01.5707

Abstract

ABSTRACTSilken tofu is a type of tofu that has a soft and compact texture. Ie kuloh sira and ie acid sunti can be used as coagulants. The lack of this coagulant results in a tofu texture that is not compact. Therefore, cornstarch is added to the making of silken tofu to improve the quality of the resulting silken tofu texture. This study aims to determine the effect of the type and concentration of coagulant and cornstarch concentration on the characteristics of silken tofu and the shelf life of silken tofu. This research method uses the Response Surface Method (RSM) and the organoleptic method. Coagulant concentration (0.5%, 1%, 1.5%, 2%, 2.5%) and cornstarch concentration (5%, 10%, 15%, 20%, 25%). The results obtained for silken tofu with coagulant ie kuloh sira and cornstarch obtained the optimal value, namely at concentrations of ie kuloh sira 2% and cornstarch 10% producing a protein content of 8.45%, texture 4.5 mm/sec. The concentration of ie kuloh sira and cornstarch did not affect the color and aroma of silken tofu, but it did affect the taste of silken tofu. Meanwhile, silk tofu with coagulant ie acid sunti and cornstarch obtained the optimal value, namely at a concentration of 1.5% ie acid sunti and 15% cornstarch producing a protein content of 7.57%, texture 4 mm/sec. The concentration of ie acid sunti and cornstarch has an effect on the color of silken tofu, but has no effect on the aroma and taste of silken tofu. The shelf life of silken tofu with coagulant ie kuloh sira and ie asam sunti only lasted 15 hours at room temperature. Meanwhile, those stored in the refrigerator can last for 3 days with a coagulant ie kuloh sira and 5 days with a coagulant ie acid sunti. Keywords: silken tofu, namely kuloh sira, namely sunti acid, cornstarch, RSM
Pengolahan Limbah Cair Industri Tahu Menggunakan Metode Aerasi dan Koagulasi dengan Biji Kelor (Moringa Oleifera) Ambia, Warisul; Dewi, Ratni; Rahmawati, Cut Aja
Jurnal Teknologi Vol 24, No 2 (2024): Oktober 2024
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/teknologi.v24i2.5586

Abstract

Tofu industrial waste is waste that contains high organic compounds, has the potential to damage the environment and needs to be followed up. This study used aeration and coagulation methods with moringa oleifera seed powder. The purpose of this study was to study the best time and mass of moringa seeds in removing COD (Chemical Oxygen Demand), TDS (Total Dissolved Solid) contaminants, conductivity, turbidity and pH of tofu industrial wastewater. This research was started by pulverizing moringa seeds then sieved with an 80 mesh sieve and heated at 105⁰C for 2 hours to reduce the water content. The process of aeration and coagulation was continued by varying the dose of coagulant 45; 55; 65; 75; 85 g and variation of stirring time 15; 30; 45; 60; 75; 85 minutes. Based on the research results, the best time and dose were 75 minutes and 75 g with a percentage of COD removal of 97.5%, turbidity 81%, TDS 32.45%, conductivity 27.01%, an optimum pH value of 4.2 was obtained. The FTIR characterization results obtained the highest peak of 2926.01 cm-1 indicating the presence of a carboxylic acid compound identifying the O-H functional group and experiencing a slight shift in the peak after coagulation and aeration of 2924.09 cm-1, there was no significant change in solid structure. From these results it can be concluded that moringa seed biocoagulant is able to reduce contaminants in tofu waste.
EFFECT OF PRE HEATER AND ECONOMIZER ADDITION ON ACID VALUE IN SPLITTING UNIT AT PT ENERGI OLEO PERSADA Mubarak, Salman; Rahmawati, Cut Aja; Nurdin, Irwan
Jurnal Sains dan Teknologi Reaksi Vol 22, No 02 (2024): JURNAL SAINS DAN TEKNOLOGI REAKSI
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/jstr.v22i02.6199

Abstract

ABSTRACT Temperature Problems and Stability of Fatty Acid Quality Become One of the Important Factors in the Occurrence of Hydrolysis in a Splitting Reactor Where Quality Instability Often Occurs in the Fat Splitting Hydrolysis Process, The Addition of Pre Heater and Economizer Provides a Significant Acid Value Stability Impact Judging From the Results of Analysis Conducted Within 12 Hours of Hydrolysis Process Time. With Several Temperature Variations Starting From 110 - 120 OC, Optimum Acid Value Conditions Are Obtained at 120 OC with the Maximum Acid Value Results at Acid Value 208.08. The combination of the addition of Pre Heater and Economizer can increase the efficiency of continuous steam use that can reduce production costs and ensure the stability of the temperature of the material that will enter the splitting reactor, the temperature can be varied to adjust the required heat needs in order to achieve a more perfect hydrolysis by considering economic aspects.Keywords: Preheater,Economizer, Acid Value, Hidrolisa, Splitting
PENERAPAN MESIN PENGERING REMPAH ACEH TIPE PENGERINGAN VAKUM UNTUK PRODUKSI BUBUK BANDREK SIAP SAJI Elfiana, E.; Usman, Usman; Sami, Muhammad; Ridwan, Ridwan; Pardi, P.; Rahmawati, Cut Aja
Jurnal Vokasi Vol 6, No 1 (2022): Maret
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/vokasi.v6i1.2920

Abstract

Kegiatan program Produk Teknologi yang Didesiminasikan KepadaMasyarakat (PTDM) telah dilakukan dengan mendesiminasikan mesinpengering rempah Aceh bertipe pengeringan vakum kepada pelaku usahabubuk bandrek siap saji di Desa Kumbang Kecamatan Syamtalira AronKabupaten Aceh Utara. Hasil desiminasi pengeringan rempah menggunakanmesin Oven Drying Vacuum menunjukkan hasil yang signifikan baik terhadapkualitas bubuk rempah berdasarkan kadar air 11% telah memenuhipersyaratan kualitas bubuk rempah kering sesuai SNI 01-3709-1995. Kondisioperasi pengeringan rempah menggunakan mesin Oven Drying Vacuumberbeda untuk setiap jenis rempah dan mesin ODV baik digunakan pada rangetemperature 60-700C. Semakin tinggi suhu pengeringan maka semakin cepatwaktu pengeringan yang tidak sempurna karena pada suhu tinggi panas hanyamampu melepaskan kandungan air pada permukaan bahan saja.
Pemanfaatan Limbah Logam Aluminium Sebagai PAC Untuk Proses Penjernihan Air Sumur Azzahra, Nyak; Zaini, Halim; Rahmawati, Cut Aja
Jurnal Riset, Inovasi, Teknologi & Terapan Vol 1, No 2 (2023): Juni
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/ristera.v1i2.4686

Abstract

Utilization of aluminum metal powder waste left over from the plate rack which is wasted can apparently provide economic value as raw material for making coagulants. Aluminum powder waste contains 88.74% aluminum. The high aluminum content makes plate rack waste potentially as raw material for the manufacture of polyaluminium chloride (PAC). This study begins with the manufacture of AlCl3 monomers on 4 grams of aluminum metal weight, by varying NaOH concentrations (44, 45, 46, 47 and 48%) and variations in HCl concentrations (31, 32 and 33%). Next the AlCl3 monomer is converted to PAC polymer. The results on variation of 48% NaOH and 32% HCl with pH 3.6 and specific gravity 1.23 g / ml. This result is in accordance with SNI 06-3822-1995 quality standards. This study also tested the ability of PAC to reduce turbidity in well water, with a pH of 4.30 and a decrease in turbidity of 94.94%. Can produce PAC that is more economical and has met the standard qualityof conventional SNI PAC.
Catalytic cracking of pyrolytic oil derived from arabica coffee parchment using Ni-NZ catalysts Nisa, Syarifah Rahimatun; Setiawan, Adi; Syam, Azhari Muhammad; Rahmawati, Cut Aja; Rizkina, Shafira
Reaktor Volume 25 No.1 April 2025
Publisher : Department of Chemical Engineering, Faculty of Engineering, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/reaktor.25.1.%p

Abstract

The potential of bio-oil derived from biomass has garnered significant attention among researchers due to its prospects as an environmentally friendly fuel alternative. This study utilized bio-oil extracted from Arabica coffee parchment sourced from coffee plantations in Bener Meriah Regency, Aceh, Indonesia. Nickel metal was used as a catalyst impregnated into natural zeolites to accelerate the reaction rate in the catalytic cracking method. The catalyst was prepared using the wet impregnation method, with natural zeolites first activated using 1 N HCl. During the impregnation process, stirring was conducted for 6 hours at 25 °C, followed by drying in an oven at 115 °C for 12 hours, and calcination at 500°C for 4 hours. The resulting catalyst was then characterized using TGA, XRD, and SEM analyses to determine the optimal catalyst properties. Based on XRD analysis across various concentrations, curves were observed at angles 2θ ≈ 37° and 44°, which are presumed to be peaks of nickel catalysts on the zeolite surface. In this study, the Ni-NZ catalyst concentration was varied to 15%, 20%, and 25% (w/w). GC-MS chromatogram results indicated that the highest formation of bio-benzene occurred at a 25% catalyst concentration with a residence time of 2 hours, yielding 9.28%. The findings suggest that Ni-NZ catalysts are technically capable of producing aromatic hydrocarbons from the pyrolytic oil of coffee parchment, which can be utilized as a biofuel component
Co-Authors Adi Setiawan Ambia, Warisul Azzahra, Nyak Dewi, Ratni Elfiana, E. Faridah Faridah Halim Zaini, Halim Haziri, Ahmad Abrar Mubarak, Salman Nisa, Syarifah Rahimatun Nurdin, Irwan Pardi, P. Ridwan, Ridwan Rizkina, Shafira Saifuddin Saifuddin Salmiyah Salmiyah Salmyah, S Sami, Muhammad Syam, Azhari Muhammad TA, Cut Fatmawati Usman Usman Yuniati Yuniati