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Jurnal Chemurgy
Published by Universitas Mulawarman
ISSN : 22527575     EISSN : 26207435     DOI : -
Core Subject : Science, Social, Engineering,
Chemical Engineering, Chemistry & Bioengineering Control & Systems Engineering Energy Engineering Environmental Science
Jurnal Chemurgy is published by Department of Chemical Engineering, Engineering Faculty, University of Mulawarman. This journal dedicated to the topics that relevant to Chemical Engineering, such as Energy, Thermodynamics, Optimization Process & Sustainable Process, Process Control, Material Technology, Catalyst, Kinetics & Reactor Design, Waste & Water Treatment Technology, Bioprocess & Biotechnology.
Arjuna Subject : -
Articles 126 Documents
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DISPERSION OF SO2 AND NO2 EMITTED BY AUXILIARY BOILER OF PT KMI METHANOL INDUSTRIAL USING THE GAUSSIAN PLUM MODEL AERMOD IN BONTANG CITY EAST KALIMANTAN INDONESIA Edhi Sarwono; Eka Wijayanto; Hairul Huda; Reynaldi Ferdhani Harrits; Iqbal Fathur Zain
Jurnal Chemurgy Vol 6, No 2 (2022): Jurnal Chemurgy-Desember 2022
Publisher : Universitas Mulawarman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30872/cmg.v6i2.9560

Abstract

The petrochemical industry PT Kaltim Methanol Industri Bontang City, uses auxiliary boilers with natural gas fuel and is connected to the stack to emit pollutants into the atmosphere. The objectives of this study are SO2 modeling with a radius of 5 kilometers and modeling of NO2 with a radius of 10 kilometers from the emission source. Modeling using AERMOD software, AERMET Software, and Aermap ArcGIS Software.  The wind rose in the dominant research area from the southwest and northeast directions. Dispersion of SO2 and NO2 decreases according to the distance. The increase in concentration occurred in areas that experienced elevation increases, in Teluk Pandan District with a distance of about 10 kilometers northwest with an elevation of about 100 meters above sea level, and part of the West Bontang District with a distance of about 5 kilometers to the southwest with an elevation of about 90 meters above sea level. The maximum concentration of SO2 at the receptor was 6.2631 μg/m3 on hourly modeling, 0.58132 μg/m3 on modeling per 24 hours, and 0.0317 μg/m3 on annual modeling. The maximum NO2 concentration at the receptor was 1.96781 μg/m3 on hourly modeling, 0.18089 μg/m3 on hourly modeling, and 0.01002 μg/m3 on annual modeling. The distribution of pollutants based on hourly modeling per 24 hours is spreading in all directions and irregularly while for annual modeling it tends to spread towards the southwest and northeast according to the wind rose.Keywords: AERMOD, Emissions, Modeling, Air Dispersion, Auxiliary boiler 
EFFECT OF VARIATIONS IN CONCENTRATION OF MORINGA LEAF EXTRACT ON EDIBLE FILM CHARACTERISTICS OF CASSAVA ONGGOK STARCH Aisyah Husnayanti Amini; Arbainah .; Tantra Diwa Larasati
Jurnal Chemurgy Vol 6, No 2 (2022): Jurnal Chemurgy-Desember 2022
Publisher : Universitas Mulawarman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30872/cmg.v6i2.9252

Abstract

Along with the awareness of the world's citizens about the importance of health and the quality of a packaged food product especially its durability, so that an environmentally friendly type of packaging known as edible film has been developed. One form of edible film that has the highest starch content composition is cassava onggok. In this study to make edible films using starch from cassava onggok waste, glycerol, chitosan, and Moringa (Moringa Oleifera) leaves. Cassava onggok waste has the highest carbohydrate content, which is around 65.90% which has the potential as the main ingredient in the manufacture of edible films. Moringa leaves contain phenolic compounds that will have a positive impact on improving edible products that have antioxidant abilities. The research method used is an experimental and analytical method. so it can be seen that increasing the concentration of Moringa leaves the lower the steam transmission rate while the air absorption is higher.
PERMODELAN SPASIAL PENCEMARAN LOGAM BERAT DI SUNGAI BERBEK KAWASAN INDUSTRI SIDOARJO Listin Fitrianah
Jurnal Chemurgy Vol 6, No 2 (2022): Jurnal Chemurgy-Desember 2022
Publisher : Universitas Mulawarman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30872/cmg.v6i2.9360

Abstract

Berbek Industrial Area is the largest industrial area in Sidoarjo Regency. One of the environmental impacts of industrial activities is water quality. One of the water quality is pollution in the sediment. This study aims to map and analyze the pattern of the spatial distribution of cadmium in sediments which can provide information on distribution in the area and the potential impact of lead accumulation on the environment. The samples taken were sediments from rivers in the area of the Berbek industrial area, Waru District, Sidoarjo Regency. The method used is a survey and laboratory tests. The distribution pattern of lead content in the waters was carried out using spatial analysis by the Arcgis 10.1 program kriging interpolation method. The result of pollution with the highest cadmium content was in the Berbek Region, namely 1.36 ppm. The highest distribution of sediment cadmium content is in the Wadungasri area. The Wadungasri area is a dense industrial area.
Pengaruh Katalis SiO/Al2O3 Terhadap Karakterisitik Biodiesel dari Minyak Jelantah Junety Monde; Prapti Ira Kumalasari; Debora Aryani; Mohammad Lutfi; Andy Alfandy
Jurnal Chemurgy Vol 6, No 2 (2022): Jurnal Chemurgy-Desember 2022
Publisher : Universitas Mulawarman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30872/cmg.v6i2.8319

Abstract

Penelitian ini bertujuan untuk memahami pengaruh penambahan katalis SiO2/Al2O3 terhadap karakteristik biodiesel dari minyak jelantah. Tahap awal penelitian dilakukan untuk mengetahui karakterisitik biodiesel sebelum penambahan katalis. Tahap selanjutnya adalah menganalisa perubahan karakteristik tersebut setelah ditambahkan katalis dengan variasi konsentrasi 1,0%, 1,3%, 1,6%, dan 1,9%. Hasil penelitian mengungkapkan bahwa sebelum penambahan katalis, reaksi transesterifikasi menghasilkan penurunan densitas minyak jelantah dari 0,926 g/mL menjadi 0,875g/mL, kadar FFA dari 0,053 mgKOH/minyak menjadi 0,014 mgKOH/minyak, dan angka penyabunan dari 6,5 mgKOH/g menjadi 4,5 mgKOH/g. Penambahan katalis dengan variasi konsentrasi 1,0%, 1,3%, 1,6%, dan 1,9% mengungkapkan bahwa angka asam menurun dari 0,0008 mgKOH/g minyak sampai 0,0004 mgKOH/g minyak, densitas menurun dari 0,872 g/mL sampai 0,868 g/mL, sedangkan angka penyabunan naik dari 4,5 mgKOH/g sampai 5,3 mgKOH/g. Pengaruh penambahan katalis SiO2/Al2O3 meningkatkan kualitas karakteristik biodiesel, dimana kadar FFA, angka penyabunan, dan densitas telah memenuhi Standar Biodiesel Nasional Indonesia. Kata kunci: Minyak jelantah, biodiesel, katalis SiO2/Al2O3
ANALYSIS OF PUMP INSTALLATION DESIGN FOR CLEAN WATER IN PT PAMAPERSADA NUSANTARA, INDO DISTRICT - BONTANG, EAST KALIMANTAN Moh. Arif Batutah; Hairul Huda
Jurnal Chemurgy Vol 6, No 2 (2022): Jurnal Chemurgy-Desember 2022
Publisher : Universitas Mulawarman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30872/cmg.v6i2.9395

Abstract

The demand for clean water by company employees who live in barracks is changing. This change in direction also affects the distribution of clean water, which will impact the effectiveness of the plumbing and pump systems. This analysis aims to know the plumbing installation and selection of the right pump so it can operate optimally. The method used is the analysis by ignoring losses, such as friction losses between the working fluid and the equipment. This analysis also calculates head, capacity, pump power, and efficiency. From the calculation result, we conclude that the flow capacity is 2,643 m3/min, and the total head installation is 71,69 m. So, a centrifugal pump with rotation 2951 rpm, type Groundfos CRN 90 4-2, is the best pump for installation. Keywords: pump, head installation, pump power, efficiency, capacity 
DECREASE LEVELS OF IRON (Fe) AND MANGANESE (Mn) IN ACID MINING WATER USING ACTIVE CARBON OF EGG SHELL Sandri Tandi Rapang; Shalaho Dina Devy; Windhu Nugroho; Harjuni Hasan; Revia Oktaviani; Tommy Trides
Jurnal Chemurgy Vol 6, No 2 (2022): Jurnal Chemurgy-Desember 2022
Publisher : Universitas Mulawarman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30872/cmg.v6i2.9290

Abstract

Acid mine drainage is acidic water that arises as a result of mining activities. Acidic water has a high acidity, which is often characterized by a low pH and contains high levels of heavy metals Fe and Mn. The purpose of this study was to determine the effect of activated carbon on the adsorption process and the effect of mass of activated carbon on eggshells. The method used in this research is the adsorption method using activated carbon of eggshell which is physically and chemically activated. This study used a mass variation of 5, 10, 15 and 20 grams with a contact time of 30 minutes and an adsorbent size of 200 mesh. The parameters studied were heavy metals iron (Fe) and manganese (Mn). The initial concentration of Fe acid mine waste was 29.179 mg/L, and Mn was 7.9692 mg/L. The results showed that the mass of activated carbon had an effect on decreasing the levels of Fe and Mn metals. On physical activation the average decrease in Fe metal was 99.50% and Mn metal was 53.21%, while on chemical activation the average decrease in Fe metal was 97.72% and Mn metal was 97.97%.Keywords: Acid mine water, Fe, Mn, Activated carbon, egg shell
OPTIMALISASI PROSES EKSTRAKSI MINYAK BIJI NYAMPLUNG MENGGUNAKAN RESPONSE SURFACE METHODOLOGY (RSM) Ahmad Moh. Nur; Hairul Huda; Rif'an Fathoni
Jurnal Chemurgy Vol 6, No 2 (2022): Jurnal Chemurgy-Desember 2022
Publisher : Universitas Mulawarman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30872/cmg.v6i2.9450

Abstract

Nyamplung (Calophyllum inophyllum L.) is a plant with great potential as a fuel source that can be developed in Indonesia. The oil content of nyamplung seeds is 60-75%. This study aims to optimize the process of extracting oil from nyamplung seeds using hexane solvent at various operating conditions and obtain optimum extraction operating conditions. In the process stage, extraction will be carried out using hexane solvent with several operating variations, namely extraction temperature (35-45oC); extraction time (4-6 hours); stirring speed (200-600 rpm), the process of optimizing oil extraction from nyamplung seeds was carried out using the Response Surface Methodology (RSM). The oil obtained was then characterized through several analyzes, namely yield, acid number, density and viscosity. Based on the research results, optimization of the nyamplung seed oil extraction process resulted in an oil yield of 52.43% which was obtained at 40oC, 5 hours of extraction time and 500 rpm of stirrer speed. Optimization with the aim of maximizing the oil yield response was obtained 55.33% yield at 45oC, 6 hours extraction time and 600 rpm stirrer speed. Optimization of each oil quality does not produce a significant model response. The quality of the oil resulting from the optimization of the yield is an acid number of 10.51 mgKOH/g, a density of 0.94 g/ml, and a viscosity of 4.47 cP.Keywords: calophyllum, oil, optimization, response surface methodology 
KEMAMPUAN ADSORBSI LOGAM BERAT Zn DENGAN MENGGUNAKAN ADSORBEN KULIT JAGUNG (ZEA MAYS) Febbi Zulfania; Ari badin; Rif'an Fathoni; Ahmad Moh. Nur
Jurnal Chemurgy Vol 6, No 2 (2022): Jurnal Chemurgy-Desember 2022
Publisher : Universitas Mulawarman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30872/cmg.v6i2.8060

Abstract

Adsorpsi merupakan suatu proses pemisahan bahan dari campuran gas maupun cairan, bahan yang harus dipisahkan ditarik oleh permukaan adsorben padat lalu diikat oleh gaya-gaya yang berkerja pada permukaan tersebut. Karbon aktif merupakan salah satu adsorben yang paling sering digunakan untuk menjerap zat-zat tertentu pada suatu larutan seperti kandungan logam.. Kulit jagung memiliki kandungan selulosa yang cukup tinggi, sehingga dapat digunakan sebagai adsorben. Penelitian ini bertujuan untuk mengetahui pengaruh massa adsorben pada pengurangan kadar logam dan mengetahui pengaruh aktifator terhadap adsorbsi. NaOHsebagai aktivator karbon kulit jagung terhadap adsorpsi kadar logam dalam larutan ZnSO4. dimana diketahui kadar awal larutan ZnSo4 sebesar 15 mg/L. Dilakukan adsorpsi dengan adsorben karbon dari kulit jagung dengan maasa adsorben 0,8 gram yang telah diaktivasi dengan konsentrasi aktivator 1 mg/L, 1,2 mg/L, 1,4 mg/L, 1,6 mg/L dan 1,8 diperoleh penurunan, kadar Zn hingga sebesar 93%. Selanjutnya dilakukan adsorpsi dengan adsorben karbon dari kulit jagung dengan maasa adsorben 1 gram yang telah diaktivasi dengan konsentrasi aktivator 1 mg/L, 1,2 mg/L, 1,4 mg/L, 1,6 mg/L dan 1,8 diperoleh penurunan, kadar Zn hingga sebesar 73%.
GEOCHEMICAL CHARACTERISTICS OF HOT SPRINGS IN BATU LEPOQ AND PANGADAN VILLAGES, KARANGAN DISTRICT, EAST KUTAI REGENCY, EAST KALIMANTAN PROVINCE Habibah, Miftah Faaza; Putri, Resty Intan; Sabrian, Panggea Ghiyats; Shoedarto, Riostantieka Mayandari; Saepuloh, Asep
Jurnal Chemurgy Vol 7, No 2 (2023): Jurnal Chemurgy-Desember 2023
Publisher : Universitas Mulawarman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30872/cmg.v7i2.15907

Abstract

The Karangan District in East Kutai Regency, East Kalimantan Province, is identified as having geothermal potential in the villages of Batu Lepoq and Pangadan. The presence of hot springs in these locations underscores the area's rich geological features, despite the absence of active volcanoes on the island. This study aims to analyze the physical and geochemical characteristics of the hot springs. A conceptual model of the geothermal system was developed to evaluate the geothermal potential of the area. Geochemical data from field samples were analyzed using geochemical methods. The findings indicate that the equilibrium lies in the immature water zone, with the primary source of the hot fluid being meteoric water heated by geopressure. The temperature of the sole reservoir in the Pangadan Village geothermal system is estimated to be 1930±10°C, as determined by the 1988 Giggenbach geothermometer.
PENGARUH ZnCl2, NaOH dan CaO PADA PROSES ESTERIFIKASI-TRANSESTERIFIKASI TERHADAP PENURUNAN KADAR FREE FATTY ACID (FFA) DAN HASIL BIODIESEL DARI MINYAK BRONDOLAN SAWIT Prihatiningtyas D.S, Indah; Choirunissa, Twinska; Paonganan, Evelin Putri
Jurnal Chemurgy Vol 8, No 1 (2024): Jurnal Chemurgy-Juni 2024
Publisher : Universitas Mulawarman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30872/cmg.v8i1.12009

Abstract

Brondolan sawit merupakan buah sawit yang lepas dari tandan buah karena terlalu matang ataupun yang jatuh saat proses pemanenan tandan buah segar. Minyak brondolan sawit umumnya memiliki kandungan free fatty acid (FFA)yang tinggi. Pada penelitian ini, minyak brondolan sawit dikonversi menjadi biodisel dengan dua tahapan proses yaitu esterifikasi dengan gliserol berkatalis ZnCl2 dilanjutkan dengan trans-esterifikasi menggunakan katalis CaO. Pengaruh katalis ZnCl2 , NaOH dan CaO terhadap penurunan free fatty acid dan hasil biodiesel diinvestigasi. Hasil penelitian menunjukkan bahwa proses esterifikasi dengan gliserol berkatalis ZnCl2 menurunkan nilai free fatty acid. Pada variasi konsentrasi ZnCl2 sebanyak 0,15%, 0,20%, 0,25%, dan 0,35% menunjukkan bahwa konsentrasi optimal ZnCl2 pada 0,35% dengan penurunan FFA sebesar 97% dari 37,40% ke 1,06%. Selanjutnya proses tran-sesterifikasi dilakukan dengan katalis NaOH sebesar 1% dan CaO sebesar 35% pada variasi perbandingan jumlah minyak dan metanol sebesar 1:10 ; 1:15 ; 1:20 ; 1:30. Hasil penelitian menunjukkan bahwa jumlah perbandingan minyak dan metanol yang optimal untuk katalis NaOH adalah sebesar 1:30 karena menghasilkan jumlah biodiesel sebesar 2,35% dengan nilai FFA sebesar 2,17% Sedangkan dengan katalis CaO, perbandingan minyak dan metanol yang optimal adalah sebesar 1:30 dengan hasil biodiesel sebesar 2,60% dan nilai FFA sebesar 3,08. Dari penelitian ini didapatkan bahwa jumlah katalis berpengaruh terhadap penurunan kandungan FFA yang terdapat pada minyak brondolan sawit, dan perbandingan rasio antara minyak dan metanol berpengaruh terhadap hasil biodiesel. Pada penelitian ini dapat disimpulkan bahwa proses gliserolis dengan katalis ZnCl2 mampu menurunkan kandungan asam lemak bebas atau free fatty acid pada minyak brondolan sawit. Sedangkan proses untuk mengkonversi minyak brondolan sawit menjadi biodiesel dengan proses trans-esterifikasi dapat dilakukan dengan menggunakan katalis NaOH dan CaO.

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