cover
Article Per Year (5 Year)
All
Home Page
OAI Link
Editorial Team
Contact
Reviewer
Google Scholar
Contact Name
Didik Iswadi
Contact Email
didikiswadi@gmail.com
Phone
-
Journal Mail Official
jurnalteknikkimia.unpam@gmail.com
Editorial Address
-
Location
Kota tangerang selatan,
Banten
INDONESIA
Jurnal Ilmiah Teknik Kimia
Published by Universitas Pamulang
ISSN : 25490699     EISSN : 2685323X     DOI : -
Core Subject : Science, Engineering,
Chemical Engineering, Chemistry & Bioengineering Chemistry
Fokus dan Lingkup Jurnal i lmiah Teknik Kimia yaitu pengolahan limbah, teknologi pangan dan material, proses pemisahan, teknik reaksi kimia, dan nanopartikel. Jurnal Ilmiah Teknik Kimia Universitas Pamulang terbit 2 kali dalam setahun yaitu pada bulan Januari dan Juli.
Arjuna Subject : -
Articles 131 Documents
 8   9   10   11   12 
Penentuan Kadar Logam Berat (As, Ba, Cd, Cr, Hg, Pb, Sb, Se) pada Mainan Anak (Slime, Lapisan Cat, Cat Tangan) dengan Metode SNI ISO 8124-3:2010 Menggunakan ICP-OES Henny Oktavia; Wilda Eka Cahyani; Budhi Indrawijaya
Jurnal Ilmiah Teknik Kimia Vol. 7 No. 2 (2023): 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.v7i2.27676

Abstract

ABSTRACTSafety of children's toys is an important factor that must be considered.  Such as the heavy metal content of Arsenic, Barium, Cadmium, Chromium, Mercury, Lead, Antimony and Selenium. Heavy metals are carcinogenic and cause various diseases and poisonings. Heavy metal analysis was carried out using SNI ISO 8124-3 : 2010 method. Sample preparation was carried out by wet destruction which functions to decompose solids from analytes. Variations in the types of toy materials are also needed to see the difference in results. The ICP - OES instrument was chosen because it has a low detection limit, high selectivity, high precision and accuracy, and short measurement time. The instrument system uses plasma as the ionizer and Argon as the carrier gas.  From the results of the analysis, the slime contained 0.4343 mg/kg Hg metal (yellow slime), 1.2974 mg/kg Sb metal and 0.5527 mg/kg Pb (red slime). The paint layer contains metal Ba 53.5587 mg/kg (dark green paint layer), metal Pb 1.3923 mg/kg (purple paint layer), metal Hg 0.4546 mg/kg and metal Sb 4.7480 mg/kg (pink paint layer). The hand paint contains As 0.7352 mg/kg (blue hand paint), Ba 61.1159 mg/kg (orange hand paint), 0.7417 mg/kg Hg metal (red hand paint) and 1.0344 Pb metal  mg / kg ( purple hand paint ) .  The three samples were still declared safe because all metals were still below the maximum limit based on SNI ISO 24-3: 2010.
Pengaruh Penambahan Cangkang Kemiri Terhadap Karakteristik Komposit Poliuretan Silvia Silvia; Rochmi Widjajanti; Ida Nur Apriani
Jurnal Ilmiah Teknik Kimia Vol. 7 No. 2 (2023): 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.v7i2.28257

Abstract

Composite was made to increase the durability of the material. In this study, 5 variations were carried out on candlenut shell powder, 18, 22, 26, 30, 34 grams. The study aims to know the effect of adding candlenut shell powder in polyurethane composite. The material characterization carried out using Scanning Electron Microscopy (SEM), Fourier Transform Infrared (FTIR), Universal Testing Machine (UTM), and thermal properties testing using Thermogravimetric Analysis (TGA) and Differential Scanning Calorimetry (DSC). The addition of candlenut shells affects the characteristics of the polyurethane composite. Composite looks uniform on the surface and it has the same functional groups as pure polyurethane like N-H, C-H alkanes and C=O. For tensile strength test, it was found that PU-26 had the best tensile strength of 10,531 MPa. Based on the DSC test results, it was found that PU-30 had the highest melting temperature of 276.4℃ with an enthalpy/∆H of 8.058 (J/g).
Pengaruh Waktu Maserasi dan Konsentrasi Pelarut Etanol Terhadap Rendemen dan Aktivitas antioksidan pada Bayam Merah (Amaranthus tricolor L) Hilma Maulia Khoirunnisa; Ahmad Muhammad Fuadi
Jurnal Ilmiah Teknik Kimia Vol. 7 No. 2 (2023): 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.v7i2.29537

Abstract

As technology advances, it results in environmental pollutants, UV rays, and ionizing radiation which cause various diseases due to tissue damage due to the presence of free radicals, where free radicals attack healthy body cells. One of the compounds that can inhibit free radicals is antioxidants. which can provide endogenous protection and exogenous oxidative stress by scavenging free radicals. The body's defense system that can be used to fight free radicals is food. One of the foods that contain antioxidants is red spinach (Amaranthus tricolor L.). The purpose of this study was to determine the effect of maceration time and optimum concentration of etanol solvent on yield and antioxidant activity. The extraction used was the maceration method with variations in maceration time of 24, 48.72, and 96 hours and solvent concentrations of 55%, 65%, 75%, 85%, and 96%. Then it was filtered using filter paper and evaporated using a vacuum rotary evaporator to obtain a viscous extract, after which the yield of the extract was calculated, tested for phytochemical antioxidant content, and tested for antioxidant activity using the DPPH method. The results showed that maceration time and etanol solvent concentration affected the yield and antioxidant activity of red spinach etanol extract. The best treatment for optimum results was the variation of maceration time for 96 hours using 96% etanol concentration, which resulted in a yield of 19,40 grams and an antioxidant activity of 22,70 mg/L.
Penentuan Kandungan Phthalate Plastisizer DEHP (Bis (2-ethylhexyl) phthalate) pada Kemasan Makanan, Minuman dan Obat/Kosmetik Berbahan Plastik Dengan Metode EN71-5 Menggunakan GC-MS Wisnu Setya Nugraha; Budhi Indrawijaya
Jurnal Ilmiah Teknik Kimia Vol. 7 No. 2 (2023): 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.v7i2.27681

Abstract

Food, beverage, medication, and cosmetic packaging are just a few examples of the numerous plastic items available today. Behind the shapes, colors, and size variations available on the market, the usage of plasticizers, which are additives that work to increase the resistance and flexibility of plastic materials, is one of the risks that hound consumers. The phthalates ester DEHP, which is a form of hazardous chemical called bis (2-ethylhexyl) phthalate, may be present in this plasticizer. Phthalates, according to research, can lower the level of the hormone testosterone, which in turn alters how the male reproductive system develops. From the research, phthalates have been linked to cancer also. Using the EN71-5 procedure, phthalate compounds in plastic products can be analyzed. The process of sample preparation involved extraction using a soxhlet extractor and the organic solvent n-Hexane. The samples were then subjected to GC-MS analysis. Because it offers high selectivity and accuracy in assessing complex chemical molecules, both quantitatively and qualitatively, the GC-MS (Gas Chromatography-Mass Spectrometer) is utilized. According to the analysis findings, the sample complies with Permendag No. 26 Tahun 2021's quality standards for goods containing hazardous chemicals because the amount of the phthalates DEHP (Bis (2-ethylhexyl) phthalate) compound was below the instrument's detection limit or it was not found in the sample. This sample test's findings only relate to the samples and/or products that were used in the test.
Adsorpsi Kromium Heksavalen Pada Larutan Aqueous Menggunakan Arang Kayu Teraktivasi Asam: Studi Isotherm Dan Kinetika Afandy, Moh. Azhar; Sawali, Fikrah Dian Indrawati
Jurnal Ilmiah Teknik Kimia Vol. 8 No. 1 (2024): 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.v8i1.35315

Abstract

This research aims to carry out the adsorption process of hexavalent chromium Cr (VI) utilizing activated charcoal generated from acid-activated wood charcoal using HCl and evaluate the adsorption isotherm and kinetics model. The adsorption procedure was carried out in batches with variations in the Cr (VI) adsorbate concentration, and then the total concentration was finally evaluated using UV-VIS spectrophotometry. The isotherm models employed in this research include the Langmuir, Freundlich, and Temkin isotherm models, while the kinetic models used include pseudo-first order, pseudo-second order, Elovich, and Weber-Morris intraparticle diffusion, which may be estimated using linear regression equations. The findings obtained demonstrate that the adsorption capacity value of acid-activated wood charcoal is 1.1686 mg/g, with the greatest efficiency at 83.9623%. The isotherm model parameters found demonstrate that the Langmuir isotherm model is more acceptable for application in this research with values of R2 = 0.9956, qmax = 1.5126 mg/g, and KL = 0.0783 L/g. The Cr (VI) adsorption kinetics model employing acid-activated wood charcoal follows the pseudo-second-order kinetic equation with values of k2 = 0.0162 g/mg/minute, qe = 0.7927 mg/g, and R2 = 0.9543.
Cooling Tower Performance Efficiency in Water Treatment Unit at PT. X Sukowati Nurrahman, Arif; Zami Furqon; Farid Alfalaki Hamid; Muhammad Iqbal Al Haritsah
Jurnal Ilmiah Teknik Kimia Vol. 8 No. 1 (2024): 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.v8i1.35469

Abstract

PT X Sukowati is one of the oil and gas industries that operates in the upstream sector, precisely in the oil and gas production process. The purpose of the research is to evaluate the efficiency of the Cooling Tower at PT X Sukowati, and whether it is still feasible to use in the process of cooling the engine to the poorboy and compressor. The research method used is qualitative because this method includes observation, literature study, interviews, and field orientation to obtain data related to the efficiency performance process of the Cooling Tower. Then the analysis is carried out by comparing the design data with the operating conditions of the Cooling Tower. The Cooling Tower works using the counter flow principle of water entering the water flow outlet, sprinkled with a nozzle from a sprinkle head that rotates above the PVC filler. The problem that often occurs in the Cooling Tower is the growth of moss in the cooling water pond. This is maintained by giving algae as much as 600 ml per day to the cooling water pond. The average efficiency value obtained at the Cooling Tower is 59.12%. This result shows that the Cooling Tower can still function properly. The efficiency value is better than the design data efficiency of 50%.
Penurunan Kadar COD Pada Limbah Cair Laboratorium Menggunakan Sorben Hydrilla Verticillata Agipa, Ade Irmadiki; Ruspita, Roza; Muarif, Muhamad Fajar; Jannah, Al Baasiqot Shoffia Nur
Jurnal Ilmiah Teknik Kimia Vol. 8 No. 1 (2024): 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.v8i1.36188

Abstract

Hydrilla Verticillata adsorbents, HCl-activated Hydrilla Verticillata, and NaOH-activated Hydrilla Verticillata reduce COD levels in laboratory waste. The sorbents were characterized using FTIR and SEM-EDX. FTIR analysis shows a specific absorption at the wave number 1637 cm-1, which indicates the absorption of the carbonyl group in the ester and 1536, 1416, and 1324 cm-1, identical to the absorption of the carboxyl group. SEM results show a hollow and irregular shape in the sorbent. EDX analysis showed that Hydrilla Verticillata, which was activated using HCl and NaOH, experienced a decrease in the percentage of metals. Testing for COD levels in laboratory waste before treatment was 29,492 ppm. Adsorption with various types of sorbents caused a decrease in COD levels to 25,430, 25,424, and 26,441 ppm for the Hydrilla Verticillata, HCl-activated Hydrilla Verticillata and NaOH-activated Hydrilla Verticillata sorbents. Varying concentrations of 0.03, 0.04, 0.05, 0.06, and 0.07 M on HCl-activated Hydrilla Verticillata Sorben showed a reduction in COD levels of 17.24%, 12.07%, 6.90%, 13.79%, and 20.69%.  
Ekstraksi Kalium dari Sabut Kelapa Menggunakan Metode Microwave-Assisted Extraction Setyabudi, Lintang Sekar Wulandari; Yasiroh, Halin Hijra; Nove Kartika Erliyanti; Soemargono
Jurnal Ilmiah Teknik Kimia Vol. 8 No. 1 (2024): 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.v8i1.36640

Abstract

Coconut husk is a byproduct of coconut production that takes a considerable amount of time to degrade, potentially causing environmental pollution. Coconut husk contains various minerals, with potassium being one of the highest. This research aims to determine the effect of the optimum solvent-material ratio, extraction time, and microwave power on potassium content and yield as well as the degree of acidity (pH) of coconut fiber extract. Potassium from coconut husk was extracted using microwave-assisted extraction. The microwave power used in this research was 450 watts and 600 watts with extraction times varying from 50 to 130 minutes and the ratio of raw materials and solvent in the form of distilled water (w/v) 1:3; 1:4; 1:5; 1:6; and 1:7. The best extraction results were obtained under the operating conditions of 600 watts power, 50 minutes extraction time, and 1:7 (w/v) ratio, with yields and potassium content of 99.8280% and 0.1021%. The highest pH value was obtained at 600 watts, 130 min, and material-to-solvent ratios 1:6 (w/v), measuring 9.2.
Sensory Quality and Antixidant Activity of Starfruit Syrup with the Addition of Roselle Saputra, Harmoko; Dase Hunaifi; Yane Regiana; Feri Kusnandar
Jurnal Ilmiah Teknik Kimia Vol. 8 No. 1 (2024): 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.v8i1.37160

Abstract

Starfruit (Averrhoa bilimbi L.) and roselle flower (Hibiscus sabdariffa L.) possess the potential to be processed into syrup, enhancing its added value. This study determined best syrup formulation derived from a mixture of starfruit and roselle flower extracts, focusing on chemical attributes, sensory quality, and antioxidant capacity (IC50). Three formulations (F1, F2, and F3) comprising a mix of starfruit wuluh extract (ranging from 50-70%) and roselle flower extract (between 29.6-39.6%), added with 0.3% stevia and 0.1% xanthan gum, were prepared, pasteurized, and sealed in glass bottles. Changes in the antioxidant capacity of the selected syrup were monitored over a 5-week storage period. The combination of 50.0% starfruit extract with 49.6% roselle extract (F1) was prefered in terms of sensory quality (including color, taste, aroma, thickness, and overall acceptance) and its antioxidant attributes. The IC50 antioxidant activity of this syrup formulation exhibited a gradual decline over the 5-week storage duration. 
KOH Activated-Biochar from Oil Palm Solid Wastes Via Pyrolysis for Energy Storage Application Murti, Galuh Wirama; Rahmawati, Nurdiah; Valentino, Novio; Hikmat, Hikmat; Firmandoko, Bagus Alif; Dwiratna, Bralin; Bangun, Herson; Prasetyo, Joni
Jurnal Ilmiah Teknik Kimia Vol. 8 No. 1 (2024): 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.v8i1.37710

Abstract

As the leading exporter of the oil palm in the world, Indonesia has an environmental issue regarding to the increasing oil palm solid wastes. In order to utilize this lignocellulosic wastes into an inexpensive supply of carbon-based material, biochar from empty fruit bunch (EFB), palm kernel shell (PKS), oil palm frond (OPF), and oil palm trunk (OPT) was produced via slow pyrolysis with KOH as activation agent. The slow pyrolysis was conducted with a temperature of 600oC, a heating rate of 10oC/min, held for 30 min, and atmospheric pressure. This study examines the physico-chemical characterization of all oil palm solid wastes and biochars by using ultimate analysis, water and ash content, Fourier Transform Infrared (FTIR) spectrometer, surface area using Brunauer-Emmet-Teller (BET), and surface morphology using Scanning Electron Microscope (SEM). The higher biochar yields were obtained by PKS and EFB with 30% and 35.79% which have a higher ash content, lignin content, and residual solid char. OPT and PKS biochars exhibit high surface area (467.49 m2/g and 386.85 m2/g) with a high carbon content of 75.64% and 70.22%, respectively. Electrochemical performances of OPT and PKS biochar were also evaluated and the cyclic voltammogram showed the response of current to potential. The results of OPT and PKS biochars had shown a promising raw materials as bio-carbon black which have a well-developed structure of morphology, high surface area, and high carbon content.  

Page 10 of 14 | Total Record : 131

 8   9   10   11   12 

Filter by Year

2017 2026


Reset
Filter By Issues
All Issue Vol. 10 No. 1 (2026): JURNAL ILMIAH TEKNIK KIMIA Vol. 9 No. 2 (2025): JURNAL ILMIAH TEKNIK KIMIA Vol. 9 No. 1 (2025): JURNAL ILMIAH TEKNIK KIMIA Vol. 8 No. 2 (2024): JURNAL ILMIAH TEKNIK KIMIA Vol. 8 No. 1 (2024): JURNAL ILMIAH TEKNIK KIMIA Vol. 7 No. 2 (2023): JURNAL ILMIAH TEKNIK KIMIA Vol. 7 No. 1 (2023): JURNAL ILMIAH TEKNIK KIMIA Vol 6, No 2 (2022): JURNAL ILMIAH TEKNIK KIMIA Vol 6, No 1 (2022): JURNAL ILMIAH TEKNIK KIMIA Vol 5, No 2 (2021): JURNAL ILMIAH TEKNIK KIMIA Vol 5, No 1 (2021): JURNAL ILMIAH TEKNIK KIMIA Vol 4, No 2 (2020): JURNAL ILMIAH TEKNIK KIMIA Vol 4, No 1 (2020): JURNAL ILMIAH TEKNIK KIMIA Vol 3, No 2 (2019): JURNAL ILMIAH TEKNIK KIMIA Vol 3, No 1 (2019): JURNAL ILMIAH TEKNIK KIMIA Vol 2, No 2 (2018): JURNAL ILMIAH TEKNIK KIMIA Vol 2, No 1 (2018): JURNAL ILMIAH TEKNIK KIMIA Vol 1, No 2 (2017): JURNAL ILMIAH TEKNIK KIMIA Vol 1, No 1 (2017): JURNAL ILMIAH TEKNIK KIMIA More Issue