Garuda - Garba Rujukan Digital

All

Jurnal Teknik Kimia USU

jtk
Website

Published by TALENTA PUBLISHER

ISSN : - EISSN : 23374888 DOI : https://doi.org/10.32734/jtk.v11i1

Core Subject : Science, Social, Engineering,

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

Jurnal Teknik Kimia USU merupakan jurnal elektronik yang mempublikasikan karya ilmiah di bidang teknik kimia yang diterbitkan oleh Departemen Teknik Kimia, Fakultas Teknik, Universitas Sumatera Utara. Jurnal ini tidak terbatas pada mahasiswa dan dosen Universitas Sumatera Utara, tetapi terbuka untuk mahasiswa, dosen dan peneliti dari instansi lain.

Arjuna Subject : Teknik Kimia (semua kategori) - Teknik Kimia (Lain-Lain)

Articles 337 Documents

4 5 6 7 8

PEMBUATAN ASAM OKSALAT DARI ALANG-ALANG (Imperata Cylindrica) DENGAN METODE PELEBURAN ALKALI Iriany; Andrew Faguh Sitanggang; Rahmad Dennie A. Pohan
Jurnal Teknik Kimia USU Vol. 4 No. 1 (2015): Jurnal Teknik Kimia USU
Publisher : Talenta Publisher (Universitas Sumatera Utara)

Imperata grassland is one of the wild plant which have a low economic value but containing high cellulose. Therefore it is potentially to be used as raw material for oxalic acid manufacturing. The oxalic acid can be produced from imperata grassland through 4 steps: alkaline hydrolysis, precipitacion, acidification and crystallization. Experiments are carried out in a three necks glass equipped with thermometer, mixer, heater and condenser. Cooking solution NaOH were varied 3,5 N; 4 N and 4,5 N and cooking time 50, 60, 70 and 80 minutes. According to the result from the experiment, at the condition 98oC of cooking temperature, the highest yield of oxalic acid about 44,39% is obtained at 4 N concentration of sodium hydroxide and 60 minute of cooking time. Oxalic acid produced has 104oC of melting point and 1,2 of degree of acidity (pH).

EFISIENSI PENYERAPAN LOGAM Pb2+ DENGAN MENGGUNAKAN CAMPURAN BENTONIT DAN ENCENG GONDOK M. Faisal
Jurnal Teknik Kimia USU Vol. 4 No. 1 (2015): Jurnal Teknik Kimia USU
Publisher : Talenta Publisher (Universitas Sumatera Utara)

Adsorption of Pb2+by using a mix of bentonite and water hyacinth has been carried out in a bacth system. The purpose of the research is to investigate the abilty of the mix bentonite and water hyacinth to adsorp Pb2+. Prior to adsorption process, the mix of bentonite and water hyacnth was activated physcally by H2SO4. The adsorption ability between activated-adsorbend and without activated-adsorbend was then compared. In the activaved process, the mix of bentonite and water hyacinth used was 4 gram in weight and 120 ml of H2SO4 1,2 M. In this research, adsorption time of 30, 60, 120 menit, the speed of 50, 100, 150 rpm and the Pb2+concentration of 30, 35 and 40 mg/l were used. The result showed that the adsorption efficiency of activated-adsorbend is higher than that of without activaved. The maximum adsorption of 0,987 mg/g were obtained at Pb2+concentration of 40 mg/l with a contact time and speed of 120 min and 150 rpm, respetively.

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.

PENENTUAN DISTRIBUSI UKURAN PARTIKEL TEPUNG TERIGU DENGAN MENGGUNAKAN METODE PENGAPUNGAN BATANG (BUOYANCY WEIGHING-BAR METHOD) Rondang Tambun; Nofriko Pratama; Ely; Farida Hanum
Jurnal Teknik Kimia USU Vol. 4 No. 1 (2015): Jurnal Teknik Kimia USU
Publisher : Talenta Publisher (Universitas Sumatera Utara)

Particle size measurement of wheat flour is important in wheat flour industry. There are several methods have been used to measure particle size distribution (PSD) of wheat flour, such as Andreasen pipette method, sedimentation balance method, centrifugal sedimentation method. The disadvantages of these methods are that they are time consuming and require special skills. On the other hand, PSD can be analyzed using a different principle through laser diffraction/scattering methods, and coulter counter method. The laser diffraction/scattering and coulter counter methods produce highly accurate results within a shorter time, but the equipment is extremely expensive. Therefore, a simple and cost-effective new method to determine PSD is in high demand. In this study, we aim to develop a new method to measure the particle size distribution of wheat flour using a buoyancy weighing–bar method. In this method, the density change in a suspension due to particle migration (wheat flour) is measured by weighing buoyancy against a weighing–bar hung in the suspension (etanol/metanol), and the PSD is calculated using the length of the bar and the time–course change in the mass of the bar. This apparatus consists of an analytical balance with a hook for underfloor weighing, and a weighing–bar, which is used to detect the density change in suspension. The result obtained show that the PSD of wheat flour measured by the buoyancy weighing-bar method is comparable to that determined by settling balance method.

PENGARUH SUHU REAKSI DAN JUMLAH KATALIS PADA PEMBUATAN BIODIESEL DARI LIMBAH LEMAK SAPI DENGAN MENGGUNAKAN KATALIS HETEROGEN CaO DARI KULIT TELUR AYAM Wendi; Valentinoh Cuaca; Taslim
Jurnal Teknik Kimia USU Vol. 4 No. 1 (2015): Jurnal Teknik Kimia USU
Publisher : Talenta Publisher (Universitas Sumatera Utara)

Biodiesel is an alternative fuel for diesel engines consisting of the alkyl monoesters from vegetable oils or animal fats. Beef tallow waste is the non-edible raw material with low cost production and the availability is huge in the cattle production. The objective of the study was to utilize beef tallow waste for biodiesel production using solid oxide catalyst which derived from the industrial eggshells. The materials calcined with temperature 900oC and time 2 hours, transformed calcium species in the shells into active CaO catalysts.The oil contained high free fatty acid (FFA) content of 1.86%. The FFA content of the oil was reduced by acid-catalyzed esterification. The product from this stage was subjected to produce biodiesel. Transesterification process reacts oil and methanol to produce methyl ester and glycerol. The produced methyl ester on the upper layer was separated from the glycerol and then washed. Effect of various process variables such as amount of catalyst and temperature were investigated. The biodiesel properties like methyl ester content, density, viscosity, and flash point was evaluated and was found to compare well with Indonesian Standard (SNI). Under the best condition, the maximum yield of 82.43% beef tallow methyl ester was obtained by using 9:1 molar ratio of methanol to beef tallow oil at 55oC, for a reaction time 1.5 hours in the presence 3 wt% of CaO catalyst. The results of this work showed that the use of beef tallow is very suitable as low cost feedstock for biodiesel production.

PENGARUH SUHU DALAM PEMBUATAN KARBON AKTIF DARI KULIT SALAK (Salacca edulis) DENGAN IMPREGNASI ASAM FOSFAT (H3PO4) Muhammad Turmuzi; Arion Syaputra
Jurnal Teknik Kimia USU Vol. 4 No. 1 (2015): Jurnal Teknik Kimia USU
Publisher : Talenta Publisher (Universitas Sumatera Utara)

This study was aimed to determine the yield, iodine and characteristics of activated carbon pore surface area. Activated carbon is made by impregnation method with phosphoric acid (H3PO4). Snake fruit peel that has been mashed 1-2 mm soaked with phosphoric acid for (H3PO4) with concentration 10% for 3 hours. Filtered and dried for 24 hours at 60 °C. Snake fruit peel that has been impregnated pyrolysis at 400- 600 °C for 1 hours. Snake fruit peel that has been pyrolysis cooled in a desiccator for 30 minutes and washed until neutral pH. Then dried to a constant mass. The results showed that the best yield at a temperature of 400 °C 71.70%. The best surface area is 4078,694 m2/g. While iodine best is 494,91mg/g at a temperature 600 °C.

PENGARUH PENAMBAHAN AKTIVATOR ZnCl2, KOH, DAN H3PO4 DALAM PEMBUATAN KARBON AKTIF DARI PELEPAH AREN (Arenga Pinnata) Marina Olivia Esterlita; Netti Herlina
Jurnal Teknik Kimia USU Vol. 4 No. 1 (2015): Jurnal Teknik Kimia USU
Publisher : Talenta Publisher (Universitas Sumatera Utara)

This research aimed to determine the effect of carbonization temperature and activator agent in making activated carbon, and also determine the optimum temperature, and best activator agent. The raw material used is kind of lignocellulosic like palm frond. The palm fronds cleaned and chopped, then it soaked in each activator solution include KOH, ZnCl2, and H3PO4 at room temperature for 24 hours. After that, palm fronds carbonized in the furnace at a temperature of 4000C, 5000C, and 6000C in 1 hour. Carbon washed by aquadest until its netral, after that calculated the yield of charcoal, moisture content, and absorption ability of the iodine solution. The highest yield obtained in the activated carbon which impregnated by ZnCl2 at the temperature 4000C which is 82,04%. The best water content of activated carbon obtained in the activated carbon impregnated by H3PO4 of 6% which is the lowest one. Activated carbon which has the largest number of iodine absorption was also obtained on the active carbon carbonized at a temperature of 5000C and activated by H3PO4 which is 767.745 mg iodine / g of activated carbon, and the value is in compliance with SNI.

RANCANGAN ALAT PEMBUATAN BIOETANOL DARI BAHAN BAKU KULIT DURIAN Irvan; Bambang Trisakti; Luri Adriani; Reviana Revitasari
Jurnal Teknik Kimia USU Vol. 4 No. 1 (2015): Jurnal Teknik Kimia USU
Publisher : Talenta Publisher (Universitas Sumatera Utara)

In this research, the bioethanol production unit using durian peel as raw material was designed with capacity process of 100 liters per cycle in batch process. The main equipments were designed fermenter and distillation unit. Fermenter tank was designed with 43 cm of diameter and 86 cm of height which was equipped with two manual paddle impeller of 30 cm in diameter. The other of main equipments, distillation tank was made of stainless steel with 48 cm of diameter and 54 cm of height, which was equipped with heater to heat the liquid of fermentation process and cooling tank to cool vaporised bioethanol. The time required for one cycle of fermentation with batch process was 7 days and 7 hours. While the time required for one cycle of bioethanol production with batch process was 8 days and 4 hours. The feasibility of bioethanol production unit in which consists of fermenter tank and distillation tank under condition process of 7 days and yeast concentration of 6% and distillation temperature of 80oC was tested. The results obtained were 8,98% of bioethanol concentration during fermentation and 74,96% of bioethanol concentration during distillation.

SINTESIS α-PINENE MENJADI α-TERPINEOL MENGGUNAKAN KATALIS H2SO4 DENGAN VARIASI SUHU REAKSI DAN VOLUME ETANOL Elvianto Dwi Daryono
Jurnal Teknik Kimia USU Vol. 4 No. 2 (2015): Jurnal Teknik Kimia USU
Publisher : Talenta Publisher (Universitas Sumatera Utara)

This study is intended to explore the optimum temperature reaction and volume of ethanol in the synthesis of α-pinene to α-terpineol. Turpentine oils that is used in this study contains α-pinene by 79.05%. In this study the variables used is the reaction temperature (60º, 70º, and 80ºC) and the volume of ethanol (105, 115, 125, 135 and 145 mL). Synthesis is done during 4 hours using a three-neck flask, condenser, hot plate, a magnetic stirrer, and a thermometer with a stirring speed of scale 7(350-700 rpm). After that, the results is neutralized to pH 7 using NaOH 5% then it is diluted with ethanol in 250 mL volumetric flask. Synthesized samples were analyzed by Gas Chromatography method. In this study, the highest concentration of α-terpineol obtained 57.05% with yield 67,79% at temperature reaction 70oC and the volume of ethanol is 135 mL.

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.

Page 6 of 34 | Total Record : 337

4 5 6 7 8

Filter by Year

2012 2025

Filter By Issues

All Issue Vol. 14 No. 2 (2025): Jurnal Teknik Kimia USU Vol. 14 No. 1 (2025): Jurnal Teknik Kimia USU Vol. 13 No. 2 (2024): Jurnal Teknik Kimia USU Vol. 13 No. 1 (2024): Jurnal Teknik Kimia USU Vol. 12 No. 2 (2023): Jurnal Teknik Kimia USU Vol. 12 No. 1 (2023): Jurnal Teknik Kimia USU Vol. 11 No. 2 (2022): Jurnal Teknik Kimia USU Vol. 11 No. 1 (2022): Jurnal Teknik Kimia USU Vol. 10 No. 2 (2021): Jurnal Teknik Kimia USU Vol. 10 No. 1 (2021): Jurnal Teknik Kimia USU Vol. 9 No. 2 (2020): Jurnal Teknik Kimia USU Vol. 9 No. 1 (2020): Jurnal Teknik Kimia USU Vol. 8 No. 2 (2019): Jurnal Teknik Kimia USU Vol. 8 No. 1 (2019): Jurnal Teknik Kimia USU Vol. 7 No. 2 (2018): Jurnal Teknik Kimia USU Vol. 7 No. 1 (2018): Jurnal Teknik Kimia USU Vol. 6 No. 4 (2017): Jurnal Teknik Kimia USU Vol. 6 No. 3 (2017): Jurnal Teknik Kimia USU Vol. 6 No. 2 (2017): Jurnal Teknik Kimia USU Vol. 6 No. 1 (2017): Jurnal Teknik Kimia USU Vol. 5 No. 4 (2016): Jurnal Teknik Kimia USU Vol. 5 No. 3 (2016): Jurnal Teknik Kimia USU Vol. 5 No. 2 (2016): Jurnal Teknik Kimia USU Vol. 5 No. 1 (2016): Jurnal Teknik Kimia USU Vol. 4 No. 4 (2015): Jurnal Teknik Kimia USU Vol. 4 No. 3 (2015): Jurnal Teknik Kimia USU Vol. 4 No. 2 (2015): Jurnal Teknik Kimia USU Vol. 4 No. 1 (2015): Jurnal Teknik Kimia USU Vol. 3 No. 4 (2014): Jurnal Teknik Kimia USU Vol. 3 No. 3 (2014): Jurnal Teknik Kimia USU Vol. 3 No. 2 (2014): Jurnal Teknik Kimia USU Vol. 3 No. 1 (2014): Jurnal Teknik Kimia USU Vol. 2 No. 4 (2013): Jurnal Teknik Kimia USU Vol. 2 No. 3 (2013): Jurnal Teknik Kimia USU Vol. 2 No. 2 (2013): Jurnal Teknik Kimia USU Vol. 2 No. 1 (2013): Jurnal Teknik Kimia USU Vol. 1 No. 2 (2012): Jurnal Teknik Kimia USU Vol. 1 No. 1 (2012): Jurnal Teknik Kimia USU More Issue

Home Page

OAI Link

Editorial Team

Contact

Reviewer

Google Scholar

Contact Name
Rondang Tambun

Contact Email
rondang@usu.ac.id

Phone
+6281263166850

Journal Mail Official
rondang@usu.ac.id

Editorial Address
Departemen Teknik Kimia, Fakultas Teknik, Universitas Sumatera Utara Jl. Almamater Kampus USU, Medan

Location
Unknown,

Unknown

INDONESIA

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Home Page

OAI Link

Editorial Team

Contact

Reviewer

Google Scholar

Contact Name Rondang Tambun

Contact Email rondang@usu.ac.id

Phone +6281263166850

Journal Mail Official rondang@usu.ac.id

Editorial Address Departemen Teknik Kimia, Fakultas Teknik, Universitas Sumatera Utara Jl. Almamater Kampus USU, Medan

Location Unknown, Unknown INDONESIA

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Contact Name
Rondang Tambun

Contact Email
rondang@usu.ac.id

Phone
+6281263166850

Journal Mail Official
rondang@usu.ac.id

Editorial Address
Departemen Teknik Kimia, Fakultas Teknik, Universitas Sumatera Utara Jl. Almamater Kampus USU, Medan

Location
Unknown,

Unknown

INDONESIA