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All Journal Jurnal Sains Materi Indonesia Agrointek Jurnal Redoks Jurnal Teknik Kimia Jurnal Ilmiah Teknik Kimia REACTOR : Journal of Research On Chemistry And Engineering
Rosalina Rosalina
Politeknik ATI Padang
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Energy Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology

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Pengaruh Eksitasi Gelombang Iradiasi Ultrasonik Terhadap Kadar Tanin pada Maserasi Biji Pinang Wangi Rosalina Rosalina; Ferry Ikhsandy; Agung Kurnia Yahya; Hibrah Hibrah
REACTOR: Journal of Research on Chemistry and Engineering Vol 2, No 2 (2021): Published in December 2021
Publisher : Politeknik ATI Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52759/reactor.v2i2.30

Abstract

Nagari Sikucua, Kampung Dalam Subdistrict, Padang Pariaman produces nearly 800 tons of fragrant areca nut every year which is sent to Jambi to meet export needs. Areca nut contains tannins, substances that have many benefits, some of which are anti-inflammatory, corrosion inhibitors, antioxidants. This study aims to obtain tannins in areca nut extract through a kinetic maceration process with pre-treatment with ultrasonic irradiation wave. The dried areca nut was ground and sieved with various sizes of 20, 40 and 70 mesh and then extracted with ethanol as solvent. The concentration of ethanol used consisted of 35%, 50%, 65% and 80%. Ultrasonic irradiation waves were given for the initial 15 minutes of maceration and then continued with kinetic maceration for up to 4 hours in a water bath at 45°C. The extraction results were concentrated in a rotary evaporator and then tested for tannin levels using Follin Denish reagent in the standard series of tannic acid as a comparison with spectrophotometer UV-Vis. The highest yield of tannin content 11.10% was obtained in the 4-hour maceration process with pre-treatment ultrasonic irradiation at concentration of 80% ethanol with a size of 40 mesh.
Variation of Time and Ethanol Solvent Concentration Of Kinetic Maceration Tannin Extraction From Aromatic Areca Catechu Hibrah Hibrah; Ferry Ikhsandy; Agung Kurnia Yahya; Rosalina Rosalina
Jurnal Ilmiah Teknik Kimia Vol 6, No 1 (2022): JURNAL ILMIAH TEKNIK KIMIA
Publisher : Program Studi Teknik Kimia, Universitas Pamulang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32493/jitk.v6i1.14180

Abstract

Aromatic areca catechu is one of the main agro commodities in West Sumatra. It contains tannin which are valuable compounds that are widely used in the textile industries, leather product manufacturing, or furniture industries. Utilization of tannin extraction from the aromatic betel nut is expected to increase its economic value. This study aims to extract tannin through kinetic maceration methods by varying the maceration duration of 1,2,3,4, and 5 hours; and varying the solvent concentration of ethanol 35%, 50%, 65%, 80%, and 96%. The scented areca nut powder used has a mesh size of e” 20, the stirring speed 450 rpm and the temperature kept constant at 45 oC. The extraction results were then concentrated and tested by UV-Vis spectrophotometric analysis with a standard solution of tannic acid. Optimal yield value is 3.750%  identified at maceration length of 2 hours with a solvent concentration of 65% ethanol.
THE EFFECT OF ADSORBENT TYPE AND RATIO ON REMOVAL AND ISOTHERM ADSORPTION OF METHYLENE BLUE Lia Cundari; Eki Saputra; Agus Suranto; Yandriani Yandriani; Rosalina Rosalina
Jurnal Sains Materi Indonesia Vol 21, No 3: APRIL 2020
Publisher : Center for Science & Technology of Advanced Materials - National Nuclear Energy Agency

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17146/jsmi.2020.21.3.5900

Abstract

THE EFFECT OF ADSORBENT TYPE AND RATIO ON REMOVAL AND ISOTHERM ADSORPTION OF METHYLENE BLUE. Methylene Blue (MB) is one of the dye that are widely used in the textile industry. The wastewater from textile industry that contain MB can reduce the oxygen level in water bodies. This study aims to determine the efficiency of the adsorbent in MB removal and to analyze the isotherm adsorption. The variations conducted in this research was the type of adsorbent and its ratio. The activated carbon that used as adsorbent was fresh betel nut (Cyrtostachys lakka) activated carbon (A), regenerated betel nut activated carbon (B), and coconut shell activated carbon (Cocos nucifera) (C). The type of adsorbent was AB, AC, and BC with ratio of 1:1, 1:2, 1:3, 2:1, and 3:1. The MB concentration was analyzed by using UV-Vis spectrophotometer. Isotherm adsorption was calculated based on Freundlich and Langmuir. The best results showed that the combination of fresh and regenerated betel nuts (AB) with ratio of 3:1 can remove 97.77% of MB. The adsorption process of MB in aqueous solution followed the Langmuir model with regression over 0.99 and adsorption capacity in the range of 2.14 mg/g - 3.53 mg/g.
PRE-TREATMENT TANDAN KOSONG KELAPA SAWIT SEBAGAI BAHAN BAKU BIOETANOL DENGAN BANTUAN GELOMBANG MICROWAVE Dwi Kemala Putri; Rosalina Rosalina; Reni Sutri
Jurnal Redoks Vol. 8 No. 1 (2023): REDOKS JANUARI-JUNI
Publisher : Universitass PGRI Palembang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31851/redoks.v8i1.9313

Abstract

Tandan Kosong Kelapa Sawit (TKKS) merupakan limbah perkebunan pengolahan kelapa sawit yang belum banyak dimanfaatkan secara luas. Salah satu pemanfaatan TKKS adalah sebagai bahan baku pembuatan bioethanol. Dalam peroses pembuatan bioethanol, TKKS harus melewati proses pre-treatment terlebih dahulu yang bertujuan untuk memecah lignoselulosa menjadi monomer gula. Proses pre-treatment dilakukan terhadap kandungan lignin, selulosa, dan hemiselulosa dengan menggunakan bantuan gelombang mikro (microwave). Pre-treatment dilakukan dengan penambahan aquadest dan daya microwave sebesar 400W. Perlakukan pre-treatment ini dilakukan dengan 5 variasi waktu yaitu 5”, 10”, 15”, 20”, dan 25”. Metode pre-treatment dengan penambahan gelombang mikro ini dinilai memberikan efek positif yaitu dapat meningkatkan kadar selulosa pada TKKS. Penelitian ini dilakukan dengan pengujian kadar lignin, selulosa, dan hemiselulosa, serta uji kualitatif selulosa sebelum dan sesudah treatment menggunakan XRD. Dari hasil penelitian didapatkan bahwa waktu yang baik dalam proses pre-treatment menggunakan microwave 400 W adalah dengan lama iradiasi 25 menit. Hasil yang didapatkan adalah selulosa 36.87 %, hemiselulosa 36.30 %, dan lignin sebesar 13.74 %.
UNHULLED RICE DRYING RATE IN IMPACT OF ROTARY DRYER ELEVATION ANGLE AND INLET GAS TEMPERATURE Rosalina Rosalina; Gusni Sushanti; Puji Rahayu; Dwi Kemala Putri
AGROINTEK Vol 17, No 2 (2023)
Publisher : Agroindustrial Technology, University of Trunojoyo Madura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/agrointek.v17i2.13968

Abstract

Rotary Dryer is a type of dryer that uses a rotating system to prevail the contact of wet material with hot air. LPG gas is used as a heat source assisted by a blower for air circulation in the Rotary Dryer. Using a drying chamber with a diameter of 25 cm, a length of 135 cm, a rotating speed of 7.5 rotary per second and 8 flights in it. The research method used is a completely randomized design method with variations in the angle of elevation or slope of the Rotary Dryer and the inlet gas temperature of the drying chamber with unhulled rice as raw material. The elevation angle variable used 4 levels, namely 9.16o, 11.84o, 14.47o and 16.19o, while the gas inlet temperature variable has three levels, that are 110oC, 115oC and 120oC. Measurement of moisture content using a wet basis, determining the rate of drying using the graphical integration method. The highest drying rate was obtained for changes in the slope of the Rotary Dryer at the gas inlet temperature of 115oC and a slope of 9.16o as 0.140 kg.H2O/m2.hour. However, from the linear regression equation, the most linear drying rate decrease is at the gas inlet temperature of 110oC with the equation y = -0.0054x+0.1778 with a regression coefficient value of 0.9909 almost 1. The most optimal elevation angle in decreasing water content in all temperature variations is the smallest angle, which is 9.16o with the result that the product water content comply for SNI 6128_2015 standard, which is below 14%.
Sugar content improvement by sonication in the pretreatment of empty fruit bunch hydrolysis Rosalina Rosalina; Dwi Kemala Putri; Reni Sutri
Jurnal Teknik Kimia Vol 30 No 1 (2024): Jurnal Teknik Kimia
Publisher : Chemical Engineering Department, Faculty of Engineering, Universitas Sriwijaya in collaboration with Asosiasi Pendidikan Tinggi Teknik Kimia Indonesia (APTEKIM)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36706/jtk.v30i1.2266

Abstract

The empty palm fruit bunches (EFB) has great potential as an alternative feedstock for bioethanol production due to its high content of cellulose and hemicellulose. However, besides cellulose and hemicellulose, EFB also contains lignin, which can hinder the hydrolysis process and therefore requires delignification. This study aims to determine the effect of sonication in alkali delignification on the sugar content of hydrolysis. Ultrasonic in 37 KHz was performed at a temperature of 80 °C. Sonication process durations ranged from 30 minutes to 150 minutes using a 10 % (w/v) NaOH solvent. The hydrolysis of EFB fibers was carried out in a water bath at 80 °C using a 0.5 N sulfuric acid solvent in a ratio of 1:20 (w/v) for 2 hours. The sugar content was measured using the phenol-sulfuric acid method with UV-Visible spectrophotometry. In this study found that the ultrasonic irradiation time length gave good results at a time limit not exceeding 90 minutes due to hemicellulose characteristics . The highest sugar content was obtained at a sonication duration of 90 minutes, measuring 20.60 mg/L, which was 38.5 % higher than alkali delignification without sonication for 150 minutes. SEM analysis indicated that EFB had undergone changes in the surface morphology and structure. Qualitative FTIR analysis showed that the hydrolysis solution contained glucose and pentose, which are products of hydrolyzed cellulose and hemicellulose.
Co-Authors Agus Suranto Cundari, Lia Dwi Kemala Putri Dwi Kemala Putri Eki Saputra Ferry Ikhsandy Gusni Sushanti Hibrah Hibrah Puji Rahayu Reni Sutri Reni Sutri Yahya, Agung Kurnia Yandriani Yandriani