Subjects -> ENGINEERING (Total: 2688 journals)
    - CHEMICAL ENGINEERING (229 journals)
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    - ELECTRICAL ENGINEERING (176 journals)
    - ENGINEERING (1325 journals)
    - ENGINEERING MECHANICS AND MATERIALS (452 journals)
    - HYDRAULIC ENGINEERING (56 journals)
    - INDUSTRIAL ENGINEERING (98 journals)
    - MECHANICAL ENGINEERING (115 journals)

CHEMICAL ENGINEERING (229 journals)                  1 2 | Last

Showing 1 - 200 of 234 Journals sorted alphabetically
ACS Applied Nano Materials     Hybrid Journal   (Followers: 9)
ACS Applied Polymer Materials     Hybrid Journal   (Followers: 8)
ACS Engineering Au     Open Access   (Followers: 6)
ACS Environmental Au     Open Access   (Followers: 9)
ACS ES&T Engineering     Hybrid Journal   (Followers: 1)
ACS ES&T Water     Hybrid Journal  
ACS Sustainable Chemistry & Engineering     Hybrid Journal   (Followers: 10)
Acta Chemica Malaysia     Open Access  
Acta Crystallographica Section B: Structural Science, Crystal Engineering and Materials     Hybrid Journal   (Followers: 6)
Acta Polymerica     Hybrid Journal   (Followers: 9)
Additives for Polymers     Full-text available via subscription   (Followers: 20)
Adhesion Adhesives & Sealants     Hybrid Journal   (Followers: 10)
Advanced Chemical Engineering Research     Open Access   (Followers: 52)
Advanced Membranes     Open Access   (Followers: 3)
Advanced Powder Technology     Hybrid Journal   (Followers: 15)
Advances in Applied Ceramics     Hybrid Journal   (Followers: 4)
Advances in Chemical Engineering     Full-text available via subscription   (Followers: 24)
Advances in Chemical Engineering and Science     Open Access   (Followers: 109)
Advances in Polymer Technology     Open Access   (Followers: 14)
Aerosol Science and Engineering     Hybrid Journal  
Aerosol Science and Technology     Hybrid Journal   (Followers: 13)
African Journal of Pure and Applied Chemistry     Open Access   (Followers: 6)
All Life     Open Access  
American Journal of Polymer Science & Engineering     Open Access   (Followers: 2)
Annual Review of Analytical Chemistry     Full-text available via subscription   (Followers: 12)
Annual Review of Chemical and Biomolecular Engineering     Full-text available via subscription   (Followers: 12)
Anti-Corrosion Methods and Materials     Hybrid Journal   (Followers: 11)
Applied Petrochemical Research     Open Access   (Followers: 2)
ASEAN Journal of Chemical Engineering     Open Access  
Asia-Pacific Journal of Chemical Engineering     Hybrid Journal   (Followers: 6)
Asian Journal of Applied Chemistry Research     Open Access   (Followers: 1)
Biochemical Engineering Journal     Hybrid Journal   (Followers: 13)
Biofuel Research Journal     Open Access   (Followers: 1)
Biomass Conversion and Biorefinery     Partially Free   (Followers: 10)
Bulletin of Chemical Reaction Engineering & Catalysis     Open Access   (Followers: 3)
Bulletin of Institute of Chemistry and Chemical Technology, Mongolian Academy of Sciences     Open Access  
Bulletin of the Chemical Society of Ethiopia     Open Access   (Followers: 1)
C&EN Global Enterprise     Full-text available via subscription  
Carbohydrate Polymers     Hybrid Journal   (Followers: 9)
Carbon Capture Science & Technology     Open Access  
Case Studies in Chemical and Environmental Engineering     Open Access  
Catalysts     Open Access   (Followers: 11)
Chem Catalysis     Hybrid Journal  
ChemBioEng Reviews     Full-text available via subscription   (Followers: 3)
ChemEngineering     Open Access  
Chemical and Engineering News     Free   (Followers: 22)
Chemical and Materials Engineering     Open Access   (Followers: 54)
Chemical and Petroleum Engineering     Hybrid Journal   (Followers: 8)
Chemical and Process Engineering     Open Access   (Followers: 67)
Chemical and Process Engineering Research     Open Access   (Followers: 64)
Chemical Engineer, The     Partially Free  
Chemical Engineering & Technology     Hybrid Journal   (Followers: 28)
Chemical Engineering and Processing: Process Intensification     Hybrid Journal   (Followers: 15)
Chemical Engineering and Science     Open Access   (Followers: 58)
Chemical Engineering Communications     Hybrid Journal   (Followers: 14)
Chemical Engineering Education     Full-text available via subscription   (Followers: 2)
Chemical Engineering Journal     Hybrid Journal   (Followers: 71)
Chemical Engineering Journal Advances     Open Access   (Followers: 1)
Chemical Engineering Research and Design     Hybrid Journal   (Followers: 26)
Chemical Engineering Research Bulletin     Open Access   (Followers: 44)
Chemical Engineering Science     Hybrid Journal   (Followers: 28)
Chemical Geology     Hybrid Journal   (Followers: 31)
Chemical Papers     Hybrid Journal   (Followers: 4)
Chemical Reviews     Hybrid Journal   (Followers: 168)
Chemical Science International Journal     Open Access  
Chemical Society Reviews     Hybrid Journal   (Followers: 44)
Chemical Technology     Open Access   (Followers: 75)
ChemInform     Hybrid Journal   (Followers: 5)
Chemistry & Industry     Full-text available via subscription   (Followers: 6)
Chemistry Africa : A Journal of the Tunisian Chemical Society     Hybrid Journal  
Chemistry Central Journal     Open Access   (Followers: 4)
Chemistry of Materials     Hybrid Journal   (Followers: 161)
Chemometrics and Intelligent Laboratory Systems     Hybrid Journal   (Followers: 13)
Chempublish Journal     Open Access  
ChemSusChem     Hybrid Journal   (Followers: 7)
Chinese Chemical Letters     Full-text available via subscription   (Followers: 2)
Chinese Journal of Chemical Engineering     Full-text available via subscription   (Followers: 3)
Chinese Journal of Chemical Physics     Hybrid Journal   (Followers: 1)
Cleaner Chemical Engineering     Open Access   (Followers: 2)
Coke and Chemistry     Hybrid Journal   (Followers: 1)
Coloration Technology     Hybrid Journal  
Computational Biology and Chemistry     Hybrid Journal   (Followers: 13)
Computers & Chemical Engineering     Hybrid Journal   (Followers: 12)
CORROSION     Full-text available via subscription   (Followers: 20)
Corrosion Engineering, Science and Technology     Hybrid Journal   (Followers: 35)
Crystal Research and Technology     Hybrid Journal   (Followers: 7)
Current Opinion in Chemical Engineering     Open Access   (Followers: 5)
Current Research in Food Science     Open Access  
Designed Monomers and Polymers     Open Access   (Followers: 1)
Digital Chemical Engineering     Open Access  
Discover Chemical Engineering     Open Access  
Education for Chemical Engineers     Hybrid Journal   (Followers: 5)
Eksergi     Open Access  
Emerging Trends in Chemical Engineering     Full-text available via subscription   (Followers: 3)
EnergyChem     Hybrid Journal   (Followers: 1)
Equilibrium : Journal of Chemical Engineering     Open Access  
Eurasian Chemico-Technological Journal     Open Access  
European Polymer Journal     Hybrid Journal   (Followers: 42)
Fibers and Polymers     Full-text available via subscription   (Followers: 4)
Focusing on Modern Food Industry     Open Access   (Followers: 2)
Food and Environment Safety     Open Access   (Followers: 3)
Food Chemistry     Hybrid Journal   (Followers: 18)
Food Chemistry : Molecular Sciences     Open Access   (Followers: 1)
Food Chemistry : X     Open Access   (Followers: 1)
Food Frontiers     Open Access   (Followers: 1)
Frontiers in Chemical Engineering     Open Access  
Frontiers in Sensors     Open Access   (Followers: 6)
Frontiers in Sustainable Food Systems     Open Access   (Followers: 2)
Frontiers of Chemical Science and Engineering     Hybrid Journal   (Followers: 5)
Gases     Open Access   (Followers: 1)
Gels     Open Access  
Geochemistry International     Hybrid Journal   (Followers: 1)
Graphene Technology     Hybrid Journal  
Green Chemical Engineering     Open Access  
High Performance Polymers     Hybrid Journal   (Followers: 1)
Indian Chemical Engineer     Hybrid Journal   (Followers: 4)
Indian Journal of Chemical Technology (IJCT)     Open Access   (Followers: 9)
Indonesian Journal of Chemical Science     Open Access  
Industrial & Engineering Chemistry     Full-text available via subscription   (Followers: 10)
Industrial & Engineering Chemistry Research     Hybrid Journal   (Followers: 20)
Industrial Gases     Open Access  
Info Chimie Magazine     Full-text available via subscription   (Followers: 1)
International Journal of Ceramic Engineering & Science     Open Access  
International Journal of Chemical Engineering     Open Access   (Followers: 7)
International Journal of Chemical Technology     Open Access   (Followers: 7)
International Journal of Chemistry and Technology     Open Access   (Followers: 1)
International Journal of Chemoinformatics and Chemical Engineering     Full-text available via subscription   (Followers: 2)
International Journal of Food Science     Open Access   (Followers: 3)
International Journal of Industrial Chemistry     Open Access  
International Journal of Innovative Research and Scientific Studies     Open Access   (Followers: 1)
International Journal of Polymeric Materials     Hybrid Journal   (Followers: 6)
International Journal of Waste Resources     Open Access   (Followers: 5)
International Research Journal of Pure and Applied Chemistry     Open Access  
Iranian Journal of Chemistry and Chemical Engineering (IJCCE)     Open Access   (Followers: 1)
Iranian Journal of Polymer Science and Technology     Open Access   (Followers: 1)
Journal of Advanced Manufacturing and Processing     Hybrid Journal  
Journal of Aerosol Science     Hybrid Journal   (Followers: 7)
Journal of Applied Crystallography     Hybrid Journal   (Followers: 7)
Journal of Applied Electrochemistry     Hybrid Journal   (Followers: 12)
Journal of Applied Polymer Science     Hybrid Journal   (Followers: 107)
Journal of Applied Science & Process Engineering     Open Access  
Journal of Biomaterials Science, Polymer Edition     Hybrid Journal   (Followers: 9)
Journal of Biopharmaceutics Sciences     Open Access   (Followers: 3)
Journal of Chemical & Engineering Data     Hybrid Journal   (Followers: 10)
Journal of Chemical and Petroleum Engineering     Open Access   (Followers: 1)
Journal of Chemical Ecology     Hybrid Journal   (Followers: 4)
Journal of Chemical Engineering     Open Access   (Followers: 63)
Journal of Chemical Engineering and Materials Science     Open Access   (Followers: 5)
Journal of Chemical Sciences     Partially Free   (Followers: 22)
Journal of Chemical Technology & Biotechnology     Hybrid Journal   (Followers: 11)
Journal of Chemical Theory and Computation     Hybrid Journal   (Followers: 21)
Journal of CO2 Utilization     Hybrid Journal   (Followers: 1)
Journal of Coating Science and Technology     Hybrid Journal  
Journal of Coatings     Open Access   (Followers: 3)
Journal of Engineered Fibers and Fabrics     Open Access  
Journal of Engineering & Processing Management     Open Access  
Journal of Environmental Chemical Engineering     Hybrid Journal   (Followers: 5)
Journal of Food Chemistry & Nanotechnology     Open Access   (Followers: 1)
Journal of Food Measurement and Characterization     Hybrid Journal  
Journal of Food Processing & Technology     Open Access   (Followers: 1)
Journal of Fuel Chemistry and Technology     Full-text available via subscription   (Followers: 1)
Journal of Geochemical Exploration     Hybrid Journal   (Followers: 4)
Journal of Industrial and Engineering Chemistry     Hybrid Journal   (Followers: 2)
Journal of Information Display     Open Access   (Followers: 1)
Journal of Inorganic and Organometallic Polymers and Materials     Hybrid Journal   (Followers: 8)
Journal of Leather Science and Engineering     Open Access  
Journal of Materials Science and Chemical Engineering     Open Access   (Followers: 1)
Journal of Modern Chemistry & Chemical Technology     Open Access   (Followers: 2)
Journal of Non-Crystalline Solids     Hybrid Journal   (Followers: 7)
Journal of Non-Crystalline Solids : X     Open Access  
Journal of Organic Semiconductors     Open Access   (Followers: 6)
Journal of Physics and Chemistry of Solids     Hybrid Journal   (Followers: 3)
Journal of Polymer and Biopolymer Physics Chemistry     Open Access   (Followers: 7)
Journal of Polymer Research     Hybrid Journal   (Followers: 7)
Journal of Polymer Science Part C : Polymer Letters     Hybrid Journal   (Followers: 5)
Journal of Polymers     Open Access   (Followers: 7)
Journal of Polymers and the Environment     Hybrid Journal   (Followers: 1)
Journal of Powder Technology     Open Access   (Followers: 4)
Journal of Pure and Applied Chemistry Research     Open Access   (Followers: 3)
Journal of the American Chemical Society     Hybrid Journal   (Followers: 322)
Journal of The Institution of Engineers (India) : Series E     Hybrid Journal   (Followers: 2)
Journal of the Taiwan Institute of Chemical Engineers     Hybrid Journal   (Followers: 1)
Journal of the Turkish Chemical Society, Section B : Chemical Engineering     Open Access  
Journal of Water Chemistry and Technology     Hybrid Journal   (Followers: 8)
Journal on Today's Ideas - Tomorrow's Technologies     Open Access   (Followers: 1)
JSFA reports     Full-text available via subscription  
Jurnal Bahan Alam Terbarukan     Open Access  
Jurnal Inovasi Pendidikan Kimia     Open Access  
Jurnal Rekayasa Kimia & Lingkungan     Open Access  
Jurnal Teknologi Dan Industri Pangan     Open Access  
Korean Journal of Chemical Engineering     Hybrid Journal   (Followers: 5)
Kvasný Průmysl     Open Access  
Materials Advances     Open Access   (Followers: 2)
Materials Chemistry and Physics     Full-text available via subscription   (Followers: 15)
Materials Science for Energy Technologies     Open Access  
Materials Sciences and Applied Chemistry     Full-text available via subscription  
Modern Chemistry & Applications     Open Access   (Followers: 1)
Molecular Catalysis     Hybrid Journal   (Followers: 6)
Nanochemistry Research     Open Access   (Followers: 1)
Natural Volatiles & Essential Oils     Open Access  

        1 2 | Last

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  This is an Open Access Journal Open Access journal
ISSN (Print) 1410-394X
Published by Universitas Pembangunan Nasional Veteran Yogyakarta Homepage  [1 journal]
  • Renewable Energy from Pyrolysis of Pine Wood with Zeolite Catalyst

    • Authors: Zubaidi Achmad, Abdullah Kunta Arsa, Bety Alfitamara, Alfia Virgiandini
      First page: 1
      Abstract: Renewable energy becomes a hot issue on the decrease of fossil energy reserves that can not be renewed. To answer the challenge of the availability of these energy a study was performed in a high-temperature cracking process from pine wood to obtain fuel oil or so-called pyrolysis. The purpose of this study was to determine the yield, physical properties, and the calorific value of the pyrolysis results. Pyrolysis process is done by varying the percentage of mordenite-type zeolite catalyst as much as  0% b/b, 2% b/b, and 4% b/b, with a mass of 100 grams of pine wood that passes sieving each sample to 50 mesh. Before use, the catalysts physically activated by heating at a temperature of 500°C and chemically activated using HCl to enhance the activity of the zeolite. Pyrolysis carried out at 400°C, 450°C, 500°C, and 550°C. After the analysis, bio-oil obtained optimum yield of 43.77142% by mass of the catalyst 4% b/b and a temperature of 500 °C. Physical properties obtained in the form of density 1.094723 g/ml, 2.96 cP viscosity, and 58°C flash point. While the highest calorific value on the condition of the catalyst 4% and the reaction temperature 550°C is 26045.50 kJ/kg.
      PubDate: 2022-03-03
      DOI: 10.31315/e.v19i1.4564
      Issue No: Vol. 19, No. 1 (2022)
       
  • Pengaruh Penambahan Zat Aditf Diethyl Ether Terhadap Pembuatan Biodiesel
           (B50)

    • Authors: Danang Jaya, Rico Mitchell Litaay, Ryan Ade Bagus, T.W. Widayati, Muhammad Syahri
      First page: 10
      Abstract: Biodiesel secara umum didefinisikan sebagai ester monoalkil dari minyak tanaman dan lemak hewan. Minyak yang berasal dari tumbuhan dan lemak hewan serta turunannya mempunyai kemungkinan sebagai pengganti bahan bakar diesel. Biodiesel ini kemudian dicampur dengan solar dengan komposisi biodiesel 50% dan solar 50% sehingga menjadi B50. Dalam penelitian ini B50 kemudian dicampur dengan diethyl ether.               Dalam pelaksanaannya, CPO terlebih dahulu diuji kadar FFA. Apabila kadar FFA >5% maka perlu dilakukan esterifikasi guna menurunkan kadar FFA. Proses esterifikasi dilakukan dengan menggunakan metanol dengan bantuan katalis H2SO4 selama 60 menit pada suhu 60oC. Pencucian dilakukan guna menghilangkan zat pengotor dengan air bersuhu 50oC dan dilanjutkan transesterifikasi menggunakan metanol dengan bantuan katalis KOH dan dilakukan pencucian kembali. Kemudian biodiesel deblending dengan solar dan diethyl ether dengan variasi B50+0% diethyl ether, B50+2% diethyl ether, B50+4% diethyl ether, B50+6% diethyl ether, B50+8% diethyl ether, B50+10% diethyl ether.               Hasil penelitian ini, didapatkan campuran B50+0% diethyl ether, B50+2% diethyl ether, B50+4% diethyl ether, B50+6% diethyl ether, B50+8% diethyl ether, B50+10% diethyl ether dengan viskositas kinematik sebesar (6.5 mm2/s, 6 mm2/s, 5.4 mm2/s, 5 mm2/s, 4.3 mm2/s, dan 3.6 mm2/s), flash point sebesar (183 oC, 179 oC, 177 oC, 175 oC, 171 oC, dan 167 oC), pour point sebesar (7 oC, 6 oC, 5 oC, 4 oC, 2 oC, dan 1 oC), nilai kalor sebesar (10051,6684 kal/m3, 10097,1322 kal/gram, 10128,1394 kal/gram, 10170,3835 kal/gram, 10235,377 kal/gram, dan 10306,8478 kal/gram), densitas 15 oC sebesar (841.1 Kg/m3, 839.5 Kg/m3, 838.2 Kg/m3, 837 Kg/m3, 836.2 Kg/m3, dan 835.1 Kg/m3).
      PubDate: 2022-03-03
      DOI: 10.31315/e.v19i1.6387
      Issue No: Vol. 19, No. 1 (2022)
       
  • Effect of NaNO3 Concentration in Medium of Raoof on Cultivation of
           Spirulina Platensis

    • Authors: Iqbal Syaichurrozi, Wardalia Wardalia, Sharfan Dwicahyanto, Yustinus Selis Toron
      Pages: 15 - 19
      Abstract: Nutrition is one of the factors that affect the growth of Spirulina platensis. The cultivation medium proposed by Raoof is a modified version of Zarrouk medium. Raoof medium requires less nutrients than Zarrouk medium but the biomass produced is almost the same. This study was conducted to vary the concentration of NaNO3 of 0.5; 1.5; 2.5; 3.5 g/L in Raoof medium to study its effect on growth and biomass composition of S. platensis. At each concentration of NaNO3 of 0.5; 1.5; 2.5; 3.5 g/L obtained the highest biomass concentration of 0.6425; 0.6455; 0.6745; 0,5193 g/L on days 12, 12, 12, 10. Concentration of NaNO3 of 2.5 g/L resulted in the highest specific growth rate of 0.1371/day and the lowest double time of 5.0566 days. In general, increasing the concentration of NaNO3 from 0.5 to 2.5 g/L increased the protein content from 33.30 to 36.98%. The addition of higher NaNO3 (3.5 g/L) actually decreased the protein content to 35.52%.
      PubDate: 2022-04-05
      DOI: 10.31315/e.v19i1.6581
      Issue No: Vol. 19, No. 1 (2022)
       
  • Separation of Mineral from Brown Algae Extract using Micro Filtration (MF)
           and Ultra Filtration (UF) Membrans – Review

    • Authors: Mahreni Ahmad
      Pages: 20 - 28
      Abstract: Brown algae (Phaeophyta) contain active compounds such as carbohydrates, proteins, phenolics, fats, pigments, vitamins and minerals. The mineral content of brown algae is around 8% to 40% consisting of cations Na+, K+, Mg++, Fe++, Zn++, Mn++ and heavy metals. Bioactive brown algae has many benefits, including Fucoidan as a cancer drug. The barrier of using Fucoidan as a medicine is its high mineral content. Therefore, the minerals must be separated. The extraction process of brown algae using various methods has been carried out with the aim of isolating the active component of Fucoidan that is free from minerals that will be an obstacle in utilizing the active component. This paper will describe some of the latest methods of extracting the active ingredients of brown algae and mineral separation processes using Micro Filtration (MF) and Ultra Filtration (UF) membrane. MF and UF membrane can separate small molecules such as cations (minerals) that can pass through the membrane so that macromolecules such as carbohydrates, fats, proteins, pigments, phenolics and vitamins can be separated from minerals and active ingredients in the absence of minerals can be obtained. The purpose of this paper is to provide research directions in the exploration of the active ingredients of brown algae for pharmaceutical and cosmetic applications without side effects caused by high metal or mineral content above the threshold value in brown algae extracts.
      PubDate: 2022-04-05
      DOI: 10.31315/e.v19i1.6653
      Issue No: Vol. 19, No. 1 (2022)
       
  • Mathematical Model of Water Absorption in Arrowroot Starch-Chitosan Based
           Bioplastic

    • Authors: Yusmardhany Yusuf, Fauzan Irfandy, Alit Istiani
      Pages: 35 - 39
      Abstract: Expansion of the size of the weight of bioplastics often occurs in daily use. This phenomenon happens because the material from bioplastics can absorb significant amounts of water. This process can lead to accumulation of swelling degree. Therefore, a mathematical model is needed to quantify this mechanism to predict the dynamics of changes in the weight of bioplastics with respet to time while contact with water to help practitioners during application design for the use of bioplastics. This study aims to build a mathematical model derived from the mass sense validated by experimental data through curve fitting. The experiment was conducted by observing the rate of change in the mass of bioplastic made from starch and chitosan by measuring the change in mass concerning time immersed in water under atmospheric conditions. The immersion time was varied between 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 20, 30, 40,50, and 60 minutes. As a result, it can be concluded that starch-chitosan-based biofilms can absorb water up to ±10.9174 gr-water/gr-bioplastic, and also this phenomenon can be quantified by a mathematical equation that derived from mass balance with an average percent error of 1.13% and R-squared coefficient of 0.9981. 
      PubDate: 2022-04-05
      DOI: 10.31315/e.v19i1.6310
      Issue No: Vol. 19, No. 1 (2022)
       
  • The Effect of Adding Activated Sludge and Types of Series Circuit Systems
           Microbial Fuel Cell (MFC) Using Chinese Food Restaurant Wastewater

    • Authors: Danang Jaya, Tunjung Wahyu Widayati, Singgih Adi Nugroho, Firda Ellysa
      Pages: 40 - 45
      Abstract: Electricity consumption expands every year. However, in Indonesia, electricity is still highly dependent on conventional energy sources such as coal. A microbial fuel cell (MFC) is one of the alternative inventions that consists of a series of tools which converts chemical energy into electrical energy in the presence of microbial metabolism. In addition to produce electrical energy, it may also help to solve environmental issues by dealing with waste. This research was purposed to investigate the potency of Chinese food restaurant waste as substrate to generate electricity in microbial fuel cell. The research was done in three stages: wastewater preparation, assembly of MFC tools in various circuits, and running MFC processes. Results showed that the best electrical average (1.02 V) was found in the treatment system without active sludge. The best circuit was in the system in 4 series, which obtained a maximum voltage of 3.76 V and the largest power density of 62.66  mW/m2. In addition, with the addition of active sludge, biological oxygen demand (BOD) of the wastewater could be lowered up to 29.27%, and chemical oxygen demand (COD) up to 51.58%. Total suspended solid (TSS) could be decreased up to 49% on the sample withoud sludge addition.
      PubDate: 2022-04-08
      DOI: 10.31315/e.v19i1.6479
      Issue No: Vol. 19, No. 1 (2022)
       
  • Modifikasi Permukaan Magnetit dengan Silika dan Aplikasinya sebagai
           Adsorben Ion Logam Berat Nikel dan Mangan

    • Authors: Diah Mahmuda
      First page: 6
      Abstract: Adsorben magnetit telah berhasil disintesis dengan metode co-presipitasi. Selanjutnya magnetite dilapisi dengan silika digunakan untuk menghilangkan ion logam mangan dan nikel dari limbah cair. Dalam penelitian ini, sampel dikarakterisasi menggunakan beberapa cara antara lain menggunakan FTIR, XRD dan TEM. Modifikasi permukaan magnetit dengan pelapisan silika menyebabkan kapasitas adsopsi ion logam mangan dan nikel dalam limbah cair buatan meningkat lebih dari 98%. Hasil penelitian ini mengindikasikan bahwa adsorben magnetit yang dilapisi silika efektif sebagai adsorben untuk menurunkan kadar ion logam mangan dan nikel dari limbah cair.
      PubDate: 2022-01-27
      DOI: 10.31315/e.v0i0.5304
       
  • Pembuatan biodiesel dari minyak jelantah menggunakan katalis heterogen

    • Authors: Danang Jaya, Tunjung Wahyu Widayati, Hanum Salsabiela, Muhammad Fathan Abdul Majid Fathan Abdul Majid
      First page: 29
      Abstract: Cadangan minyak bumi didunia semakin menipis yang membuat pemerintah juga menerapkan kebijakan mandatori B30 mulai awal 2020. Dengan kebijakan ini, maka diperlukan adanya pengembangan energi dengan memanfaatkan energi terbarukan seperti minyak nabati yang dapat diubah menjadi biodiesel. Minyak jelantah merupakan salah satu minyak nabati yang sangat potensial untuk diolah menjadi biodiesel karena pemanfaatan minyak jelantah di Indonesia masih belum berkembang. Dalam penelitian ini, kami melaporkan hasil pembuatan biodiesel dari minyak jelantah dengan variasi perbandingan jumlah mol dan berat katalis heterogen. Biodiesel dibuat dengan proses esterifikasi dan transesterifikasi dengan katalis heterogen (CaO), kemudian dilakukan proses pemisahan untuk memisahkan Biodiesel yang dihasilkan dengan hasil samping berupa gliserol. Biodiesel yang dipisahkan kemudian dilakukan analisis densitas, viskositas, flash point, dan pour point. Hasil penelitian menujukan Biodiesel terbaik yaitu pada Perbandingan mol 1:24 dengan katalis CaO 3 %. Berdasarkan data analisis, biodiesel ini memiliki yield terbesar yaitu 72,49 % dengan nilai viskositas 4,9806 cSt, nilai flash point 72,5 oC, nilai pour point 0 oC, dan nilai densitasnya 0,8662 g/ml serta nilai kalor 8837,302 kal/gram. Dengan hasil analisa tersebut yang sudah sesuai standar baku mutu mutu SNI 7182:2015.
      PubDate: 2022-01-27
      DOI: 10.31315/e.v0i0.6132
       
 
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