Garuda - Garba Rujukan Digital

p-Index From 2019 - 2024

P-Index

This Author published in this journals

All Journal Jurnal Teknik Kimia USU

Zuhrina Masyithah

Departemen Teknik Kimia, Fakultas Teknik, Universitas Sumatera Utara

Author-ID : 4065293

Chemical Engineering, Chemistry & Bioengineering Chemistry Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology

Published : 14 Documents Claim Missing Document

Claim Missing Document

Articles

1 2

SINTESIS SURFAKTAN ALKIL POLIGLIKOSIDA DARI GLUKOSA DAN DODEKANOL DENGAN KATALIS ASAM Anastasia Wulan Pratidina Swasono; Putri Dei Elvarosa Sianturi; Zuhrina Masyithah
Jurnal Teknik Kimia USU Vol. 1 No. 1 (2012): Jurnal Teknik Kimia USU
Publisher : Talenta Publisher (Universitas Sumatera Utara)

Alkyl polyglicoside (APG) is an enviromentally friendly product non-ionic surfactact and biodegradable product that can be obtained by reacting glucose and fatty alcohol. The purpose of this study was to know the manufacture of surfactant alkyl polyglicoside by using glucose and dodecanol, and also to know the effect of catalyst concentration and molar ratio glucose and dodecanol: 1:1; 1:2: 2:1 (mol/mol), catalyst consentration of hydrochloric acid: 0.3 M; 0,4 M; 0,5 M; 0,6 M at temperature 100 0C. The analysis in this research using FT-IR spectroscopy, analysis of surface tension (Critical Micelle Concentration) and HLB values (Hidrophylic-Lipophylic Balance). The best catalyst concentration at synthesis of alkyl polyglicoside is 0.6 M, the largest surface tension (CMC) at ratio glucose and dodecanol 2:1 is 70.7945% and the highest HLB value is 7.31 in comparison of glucose and dodecanol 2:1.

KAJIAN KEMURNIAN DAN PENGARUH NISBAH PEREAKSI, pH AWAL REAKSI DAN SUHU REAKSI TERHADAP NILAI CMC & HLB NATRIUM LIGNOSULFONAT Eric Wirtanto; Michael Lim; Zuhrina Masyithah
Jurnal Teknik Kimia USU Vol. 1 No. 1 (2012): Jurnal Teknik Kimia USU
Publisher : Talenta Publisher (Universitas Sumatera Utara)

Sodium lignosulphonate (SLS) is a product of isolated lignin sulphonation process using NaHSO3 as sulphonation agent.The research begins with isolated lignin from palm shell amd continued with sulphonation with mass ratio of palm shell lignin – NaHSO3(b/b) of 1:0.2, 1:0.3, and 1:0.5 and initial pH of 6, 7, and 8 at temperature 85 oC and 95 oC. The purity of SLS made in this studies was 66,782 %. The CMC value of this SLS ranged from 0,014 – 0,052; while the lowering of surface tension of water ranged from 53,63 – 59,83 dyne/cm. The HLB value ranged from 3,805 – 4,278; means that this surfactant classified as lipophilic. The resulted SLS was dark brown, and water soluble.

KAJIAN KARAKTERISTIK DAN PENGARUH NISBAH PEREAKSI, pH AWAL REAKSI DAN SUHU REAKSI TERHADAP BERAT RENDEMEN NATRIUM LIGNOSULFONAT Michael Lim; Eric Wirtanto; Zuhrina Masyithah
Jurnal Teknik Kimia USU Vol. 1 No. 1 (2012): Jurnal Teknik Kimia USU
Publisher : Talenta Publisher (Universitas Sumatera Utara)

Indonesia as one of the biggest producer of crude palm oil in the world for sure will have some problems on handling their wastes such as palm shell. Palm shell is one of industrial wastes that having low commercial value with contain about 29,4 % lignin component which very potential for use as new raw material for Sodium LignoSulfonat production. Sodium lignosulphonate (SLS) is a product of isolated lignin sulphonation process using NaHSO3 as sulphonation agent.The research begins with isolated lignin from palm shell amd continued with sulphonation with mass ratio of palm shell lignin – NaHSO3(b/b) of 1:0.2, 1:0.3, and 1:0.5 and initial pH of 6,7 and 8 at temperature 85 oC and 95 oC. Studies on the efeect of various ratio of palm shell lignin – NaHSO3 and initial pH and temperature for the sulphonation raction showed an increasing yield of (SLS) yield. The highest SLS yield of 51,2 % was obtained under condition mass ratio of palm shell lignin – NaHSO3 1:0.3, pH 7 and at temperature 95 oC. The resulted SLS was dark brown, purity 66,1782, pH level between 6-7, water soluble.

PENGARUH JENIS PELARUT DAN TEMPERATUR REAKSI PADA SINTESIS SURFAKTAN DARI ASAM OLEAT DAN n-METIL GLUKAMINA DENGAN KATALIS KIMIA Jojor Rohana Oppusunggu; Vinta Rutliana Siregar; Zuhrina Masyithah
Jurnal Teknik Kimia USU Vol. 4 No. 1 (2015): Jurnal Teknik Kimia USU
Publisher : Talenta Publisher (Universitas Sumatera Utara)

Surfactants are molecules that also has a hydrophilic group and a lipophilic group that can unify a mixture consisting of water and oil. Alkanolamide is one type of nonionic surfactants are widely used in everyday life. In this study, will be observed the influence of the type of solvent and reaction temperature on the synthesis of surfactant alkanolamide n -methyl glukamine and oleic acid from palm oil with sodium methoxide catalyst. This study aims to determine the value of the hydrophilic lipophilic balance (HLB), pH and surface tension of surfactant, by observing the effect of the type of solvent and reaction temperature. This research was conducted by using a flask at 90 ° C, 110 ° C, 130 ° C for 3 hours reaction time, substrate ratio of 1: 2, the stirring speed of 150 rpm and a catalyst concentration of 0.4% (w/w). In the amidation reaction samples taken from the flask every 1 hour for 3 hours and then the results of this amidation reaction was washed with acetone solvent to separate the catalyst. Results washing then purified by heating at 90°C to evaporate the solvent surfactant products hexane and butanol. Results containing surfactant in the analysis with Hydrophilic Liphophilic Balance Method, surface tension and FT-IR spectrophotometry. Based on this research, the optimal conditions at a temperature of 110oC, reaction time 3 hours at the solvent ratio 2: 1. From the analysis of surfactant oleoil n-Methyl glukamine values obtained HLB in the range of 11,53 HLB in accordance with the standard detergent.

PENGARUH RASIO MOLAR SUBSTRAT DAN KONSENTRASI KATALIS PADA PEMBUATAN DECYL POLIGLIKOSIDA DARI D-GLUKOSA DAN DEKANOL Rap Leanon; Walad Wirawan; Zuhrina Masyithah
Jurnal Teknik Kimia USU Vol. 4 No. 2 (2015): Jurnal Teknik Kimia USU
Publisher : Talenta Publisher (Universitas Sumatera Utara)

There are two methods to produce alkyl polyglucoside (APG) which are direct method and indirect method. In this research, APG synthesize with direct method that involves by directly reacting d-glucose with decanol with molar ratio variation of d-glucose:decanol are 1:10; 2:10; 4:10 and 6:10 (mol GL/mol C10) and HCl concentration as catalyst variation are 0,5; 1; 1,5 dan 2 (% based on weight of d-glucose) in 3 hours with temperature reaction is 95 0C. Next process is neutralizing with strong base (NaOH) until pH value is about 8-10 then the aqueous solutions are distillated with vacuum distillation. This research analyze density, yield and wavelength. Decyl polyglycoside synthetic optimum results best density value is 1,05 gr/mL in molar ratio of d-glucose:decanol 2:10 (mol GL/mol C10) and catalyst concentration 0,5%. Best yield in molar ratio of d-glucose:decanol 2:10 (mol GL/mol C10) and catalyst consentration 1,5% (% based on weight of d-glucose) with yield value is 84,09 %. Wavelength analysis of ether and OH linkage with Fourier Transform Infrared (FT-IR) spectroscopy detected ether (COC) linkage at wavenumber 1032,33 cm-1 and OH groups detected at wavenumber 3365,21 cm-1.

KRISTALISASI LIKOPEN DARI BUAH TOMAT (Lycopersicon esculentum) MENGGUNAKAN ANTISOLVENT Deviana Christianty; Sola Fide Gavra; Zuhrina Masyithah
Jurnal Teknik Kimia USU Vol. 4 No. 4 (2015): Jurnal Teknik Kimia USU
Publisher : Talenta Publisher (Universitas Sumatera Utara)

Studies on the utilization of lycopene had been conducted to determine the effect of comparison feed and solvent (F/S) and the addition of methanol for extraction of lycopene from tomatoes using mixture solvent of hexane:ethyl acetate (1:1) followed by crystallization antisolvent. In this research, ripe tomatoes juice was used with volume 150 ml. Lycopene extract was obtained through extraction method at temperature of 70 °C and the stirring speed 7 rpm. The other method was by the addition of methanol as antisolvent for crystallization. As for changing variable in this study were a comparison of feed and solvent (F/S) 1:2; 1:2.5; 1:3; 1:3.5; 1:4 and 1:4,5, and the volume of methanol as antisolvent were 50 ml, 100 ml, 150 ml and 200 ml. The results of this research about influence of feed and solvent to lycopene yield extracted obtained at the optimum condition 1:4 with a volume of 200 ml antisolvent. Whereas the influence about addition of methanol as antisolvent as an agent of precipitation and maximum condition occurs on volume of 200 ml. Wavelength analysis of C=C linkage with Fourier Transform Infrared (FT-IR) detected at wavenumber 1519,91 cm-1, CH2 linkage detected at wavenumber 1446,61 cm-1, R-CH=CH-R linkage detected at wavenumber 979,84 cm-1. While, C-C and C-CH linkage detected at wavenumber 1138 and 1373,32 cm-1.

PEMBUATAN GLISEROL TRIBENZOAT DENGAN PROSES ESTERIFIKASI MENGGUNAKAN KATALIS H-ZEOLIT TERAKTIVASI OLEH ASAM KLORIDA DAN ASAM SULFAT Mutiara Valentina M; Ekelesia Martina; Zuhrina Masyithah
Jurnal Teknik Kimia USU Vol. 5 No. 1 (2016): Jurnal Teknik Kimia USU
Publisher : Talenta Publisher (Universitas Sumatera Utara)

Esterification is one method that is often used in converting glycerol. Glycerol tribenzoate is a derivative product of glycerol which used as a plasticizer for polymer industry, food additives, water repellent material on printer ink, and many more. This research aims to study the making of glycerol tribenzoate through esterification process by using natural zeolit catalyst which is activated with hydrochloric acid, in order to obtain the optimum catalyst % weight (w/w glycerol), and also to see the potential of recycling the zeolit. Zeolit is activated by 4M for 6 hours, and then calcined in the furnace at 500 oC for 5 hours. Then continued to esterification process, glycerol 90% reacted with benzoic acid which dissolved in metanol, with mole ratio of benzoic acid and glycerol at 3,5:1, reaction temperature at 65 oC, and the stirrer speed of 200 rpm, the catalyst % weight is varied at 5 %, 6%, 7%, and 8%, and catalyst recycling is performed 3 times. FTIR characterization result a close match, shows that the product is glycerol tribenzoate. The highest yield of zeolite which activated by HCl is obtained at 6% catalyst % weight i.e 68,992%, while zeolite that activated by H2SO4 is obtained at 8% catalyst % weight i.e 69,678%, H- zeolit catalyst is still feasible to use up to 3 times recycling, with percent of yield reduction for each recycle is ≤ 8%.

EKSTRAKSI LIKOPEN DARI BUAH TOMAT (Lycopersicum Esculentum) MENGGUNAKAN PELARUT TUNGGAL DENGAN METODE KRISTALISASI ANTISOLVENT Sola Fide Gavra Tarigan; Deviana C.S. Sinaga; Zuhrina Masyithah
Jurnal Teknik Kimia USU Vol. 5 No. 2 (2016): Jurnal Teknik Kimia USU
Publisher : Talenta Publisher (Universitas Sumatera Utara)

This research was aimed to study the effect of feed and solvent ratio (f/s), antisolvent variety and solvent variety to the extraction of lycopene from tomato (Lycopersicum esculentum)by using single solvent and antisolvent crystalization method. The solvent that used was hexane and ethyl acetate and also methanol and ethanol as the antisolvent. Tomatoes was milled and then extracted. Antisolvent then added to the extract which was obtained. The results show that the more feed and solvent ratio (f/s) the more lycopene obtained. At the ratio of 1:4,5 with hexane as the solvent obtained the highest lycopene yield were 2,7 mg/150 ml and 2,2 mg/150 ml. Whereas at the ratio of 1:4,5 with ethyl acetate as the solvent obtained the highest lycopene yield were 3,2 mg/150 ml dan 2,8 mg/150 ml. By using methanol as an antisolvent, much lycopene would be obtained. By using ethyl acetate as a solvent, much lycopene would be obtained.

PENGARUH PENAMBAHAN INOKULUM, LAMA FERMENTASI DAN PENGADUKAN PADA PEMBUATAN VIRGIN COCONUT OIL (VCO) MENGGUNAKAN KHAMIR SACCHAROMYCES CEREVISIAE MURNI Jernika Simangunsong; Elisa Febrina; Zuhrina Masyithah
Jurnal Teknik Kimia USU Vol. 5 No. 3 (2016): Jurnal Teknik Kimia USU
Publisher : Talenta Publisher (Universitas Sumatera Utara)

Virgin coconut oil (VCO) is coconut oil that processed without heating. This study about fermentation of VCO using Saccharomyces cerevisiae. The purposes of this research is to find the best condition like stirring times, stirring speeds, fermentation times and concentration of inoculum in the process of making VCO. The variation of stirring speeds are 25 rpm, 50 rpm, 75 rpm, 100 rpm and 125 rpm. Stirring time used was 15 minutes, 30 minutes, 45 minutes, 60 minutes and 75 minutes. The variation of fermentation times are 6 hours, 12 hours, 18 hours, 24 hours, and 30 hours and variation concentration of inoculum are 5%, 10%, 15%, 20% and 25%. For stirring effects, the highest yield was obtained 24,5% with stirring speed is 50 rpm and stirring time is 30 minutes and the lowest yield was obtained 8,5% with stirring speed is100 rpm and stirring time 75 minutes. For fermentation times and concentration inoculum effets, the highest yield was obtained from this research is 28,25% with addition inoculum is 10% and fermentation times is 24 hours. And the lowest yield is 15% with addition inoculum is 20% and fermentation times is 12 hours. The results of this research for stirring effects showed decreases yield of VCO and for the fermentation time showed increases yield of VCO and concentration inoculum showed no effect for yield of VCO.

OPTIMASI SINTESIS BIOSURFAKTAN KARBOHIDRAT ESTER DARI ASAM PALMITAT DAN FRUKTOSA MENGGUNAKAN ENZIM LIPASE TERIMOBILISASI Hiskia Arapenta Ginting; Zuhrina Masyithah; Tjahjono Herawan; Denny Samuel Silaen
Jurnal Teknik Kimia USU Vol. 6 No. 2 (2017): Jurnal Teknik Kimia USU
Publisher : Talenta Publisher (Universitas Sumatera Utara)

Carbohydrate ester is one of many needed nonionic surfactant groups and has the potential to be an environmental friendly surfactant. The principal problem in the synthesis of carbohydrate ester is to obtain the optimum conversion of palmitic acid from temperature influence, the amount of biocatalyst and reaction time. The optimization of carbohydrate ester synthesis is carried out on three variables that influence the esterification reaction. Therefore, the esterification process is carried out by reacting directly the palmitic acid and fructose using a Novozyme®435 an immobilized lipase enzyme catalyst with a free variable of reaction temperature of 41,5 oC, 45 oC, 50 oC, 55 oC, 58,4 oC, the amount of biocatalyst is 6,63%, 8%, 10%, 12%, 13,36% mass based palmitic acid also reaction time of 7,6 hours; 24 hours; 48 hours; 72 hours; 88,3 hours and reacted with fixed variable in 500 rpm; 3:1 substrate ratio (fructose:palmitic acid) and solvent amount 10 ml. The mixture is then separated from the catalyst by filtration. The product was analyzed with determination of acid number to obtain conversion percent of fructose ester, determination of Hydrophilic Lipophilic Balance, Fourier Transform Infrared (FTIR) an surface tension determination. The optimum conversion rate obtained is 61,80% at 55 oC of reaction temperature, Novozyme®435 enzyme count is 12% and 72 hours of reaction time. From the result of fructose ester surfactant analysis obtained HLB 10,592 value which showed fructose ester surfactant can be used as emulsifier of oil in water.

Co-Authors Anastasia Wulan Pratidina Swasono Denny Samuel Silaen Deviana C.S. Sinaga Deviana Christianty Ekelesia Martina Elisa Febrina Eric Wirtanto Hiskia Arapenta Ginting Jernika Simangunsong Jojor Rohana Oppusunggu Lawrena Valentine Br. Tohang Maria Paula Sihombing Michael Lim Muhammad Ashari Muhammad Syukri Mutiara Valentina M Nur Annisa Putri Dei Elvarosa Sianturi Rap Leanon Sola Fide Gavra Sola Fide Gavra Tarigan Tjahjono Herawan Vinta Rutliana Siregar Walad Wirawan

Title

Found 14 Documents
Search

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Title Search

Found 14 Documents Search

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Title

Found 14 Documents
Search