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All Journal International Journal of Advances in Applied Sciences Jurnal Rekayasa Proses International Journal of Renewable Energy Development SPEKTRUM INDUSTRI CHEMICA Jurnal Teknik Kimia Eksergi: Chemical Engineering Journal Prosiding Semnastek Elkawnie Indonesian Journal of Science and Technology Jurnal SOLMA Indonesian Journal of Chemistry Agroindustrial Technology Journal Sains Natural: Journal of Biology and Chemistry Chemistry Indonesian Journal of Chemical Research Jurnal Rekayasa Proses JURNAL PENGABDIAN KEPADA MASYARAKAT Martabe : Jurnal Pengabdian Kepada Masyarakat Jurnal Ilmiah Teknik Kimia Buletin Ilmiah Sarjana Teknik Elektro ASEAN Journal of Chemical Engineering Community Development Journal: Jurnal Pengabdian Masyarakat Jurnal Pengabdian Masyarakat Indonesia Muhammadiyah Journal of Nutrition and Food Science (MJNF) Makara Journal of Technology Ezra Science Bulletin Indonesian Journal of Chemical Engineering al Kimiya : Jurnal Ilmu Kimia dan Terapan Jurnal Rekayasa Proses
Siti Jamilatun
Department Of Chemical Engineering, Universitas Ahmad Dahlan, Yogyakarta, Indonesia
Agriculture, Biological Sciences & Forestry Arts Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Health Professions Immunology & microbiology Industrial & Manufacturing Engineering Law, Crime, Criminology & Criminal Justice Library & Information Science Materials Science & Nanotechnology Mathematics Mechanical Engineering Nursing Physics Public Health Social Sciences Other

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Journal : CHEMICA Jurnal Teknik Kimia

 1   2 
Pengaruh Luas Perpindahan Panas Kondensor Terhadap Volume Asap Cair Terkondensasi Hasil Pirolisis Tempurung Kelapa Jamilatun, Siti; Nurkholis, Nurkholis
CHEMICA: Jurnal Teknik Kimia Vol 3, No 2 (2016): Desember 2016
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (329.414 KB) | DOI: 10.26555/chemica.v3i2.8019

Abstract

One of the products that can be made from coconut shell is making coconut shell carcoal by pyrolysis. In the pyrolysis process also produced liquid smoke, tar and uncondensed gasses. Liquid smoke is a byproduct of the activated charcoal industry has high economic value when compared with discharged into the atmosphere. Liquid smoke is a substance derived from the change of state to a liquid smoke, this process involves a change in the form of process heat transfer to the refrigerant fumes. Liquid smoke obtained simultaneously with the process of making charcoal (carbonization), smoke arising from incomplete combustion piped so that condensation will occur fluid droplets called liquid smoke. For coconut shell weight of 5 kg and 4 pipes condensor, the optimal volume of liquid smoke is 205 ml with a pyrolysis time 90 minutes and the theory of heat transfer surface area 0.076965 m2. For coconut shell weight of 5 kg and 8 pipes condensor, the optimal volume of liquid smoke is 215 ml with a pyrolysis time 90 minutes and the theory of heat transfer surface area 1.027437 m2. For coconut shell weight of 10 kg and 4 pipes condensor, the optimal volume of liquid is 183 ml with a pyrolysis time 300 minutes and the theory of heat transfer surface area 0.060404 m2. For 10 kg weight coconut shell and 8 pipes condensor, the optimal volume of liquid smoke is 205 ml with a pyrolysis time 210 minutes and the theory of heat transfer surface area 0.066801 m2.
KARAKTERISTIK ARANG AKTIF DARI TEMPURUNG KELAPA DENGAN PENGAKTIVASI H2SO4 VARIASI SUHU DAN WAKTU Jamilatun, Siti; Salamah, Siti; Isparulita, Intan Dwi
CHEMICA: Jurnal Teknik Kimia Vol 2, No 1 (2015): Juni 2015
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (337.526 KB) | DOI: 10.26555/chemica.v2i1.4562

Abstract

Activated charcoal is charcoal that has activated for increasing its surface area by opening the pores so that increase the adsorption power. The surface area of the activated charcoal is between 300 and 3500 m2/g. Adsorption power from activated charcoal is very large, i.e. ¼ to 10 times the weight of activated charcoal. Activated charcoal is a good adsorbent for the adsorption of gases, liquids, and solution. Characteristics of activated charcoal which are moisture content, ash content, and absorption of the iodine. Manufacture of activated charcoal begins with soaking for 24 hours using 2N H2SO4 solution, after it was drained and then roasted to remove the remaining water. Moisture content test was doing by weighing 1 gram of activated charcoal and then put it ini the oven at 105-1100C temperature for 120 minutes. Ash content test was by weighing 1 gram of activated charcoal and put in the furnace at a temperature of 5000C for 30 minutes, raise the temperature to 8150C for 90 minutes. Determination of the absorption of iodine is to weigh approximately 0.5 gram of activated charcoal and mix with 50 ml of iodine solution 0,1 N. Shake it for 15 minutes. Take 10 ml of the sample solution and titrate with natrim thio sulfate solution 0.1 N. Adding amylum solution of 1% as an indicator to the titration result becomes colorless.Pada penelitian ini dihasilkan kondisi optimum pada suhu pengovenan 1000oC selama 60 menit. Arang aktif yang didapatkan pada kondisi ini memiliki kemampuan adsorbsi yang baik dengan kadar penyerapan iod yang tinggi sebesar 529,94 mg I2/gram arang.In this research produced the optimum conditions of oven temperature 10000C for 60 minutes. Activated charcoal obtained under these conditions has a good adsorption capability with high levels of iodine absorption of 529.94 mg I2/g charcoal.
KARAKTERISTIK ARANG AKTIF DARI TEMPURUNG KELAPA DENGAN PENGAKTIVASI H2SO4 VARIASI SUHU DAN WAKTU Siti Jamilatun; Siti Salamah; Intan Dwi Isparulita
CHEMICA: Jurnal Teknik Kimia Vol 2, No 1 (2015): Juni 2015
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (337.526 KB) | DOI: 10.26555/chemica.v2i1.4562

Abstract

Activated charcoal is charcoal that has been activated for increasing its surface area by opening the pores so increases the adsorption power. The surface area of the activated charcoal is between 300 and 3500 m2/g. Adsorption power from activated charcoal is very large, i.e. ¼ to 10 times the weight of activated charcoal. Activated charcoal is a good adsorbent for the adsorption of gases, liquids, and solutions. Characteristics of activated charcoal are moisture content, ash content, and absorption of the iodine. Manufacture of activated charcoal begins with soaking for 24 hours using 2N H2SO4 solution after it was drained and then roasted to remove the remaining water. Moisture content test was done by weighing 1 gram of activated charcoal and then put it in the oven at 105-1100C temperature for 120 minutes. Ash content test was by weighing 1 gram of activated charcoal and put in the furnace at a temperature of 5000C for 30 minutes, raise the temperature to 8150C for 90 minutes. Determination of the absorption of iodine is to weigh approximately 0.5 grams of activated charcoal and mix it with 50 ml of iodine solution 0.1 N. Shake it for 15 minutes. Take 10 ml of the sample solution and titrate with natrium thiosulfate solution 0.1 N. Adding amylum solution of 1% as an indicator to the titration result becomes colorless.This research produced the optimum conditions of oven temperature 10000C for 60 minutes. Activated charcoal obtained under these conditions has a good adsorption capability with high levels of iodine absorption of 529.94 mg I2/g charcoal.
Activation of Coconut Shell Charcoal and Application for Bleaching Used Cooking Oil Siti Jamilatun; Martomo Setyawan; Lutfiatul Janah; Rifka Alfiyani; Ilham Mufandi
CHEMICA: Jurnal Teknik Kimia Vol 8, No 1 (2021): June 2021
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26555/chemica.v8i1.20085

Abstract

This study aimed to determine coconut shell-activated charcoal's ability in the bleaching process of used cooking oil. Activation of coconut shell charcoal was carried out using 5N H2SO4 solution. Activated charcoal is made through a pyrolysis process at a temperature of 350 ⁰C for 1 hour. The experiment was carried out in four stages: activation of activated charcoal, testing the characteristics of activated charcoal, bleaching used cooking oil, and testing the characteristics of used cooking oil. The characteristic test of activated charcoal is moisture content, ash content, and iodine absorption rate. Meanwhile, used cooking oil characteristics were carried out in water content, specific gravity, and color test. The results showed that the ash content of activated charcoal was 2.4-2.8 %, the water content of activated charcoal was 0.5-1%, the iodine absorption content was relatively high, namely 371,896-548,745 mg/g. The water content of used cooking oil was 0.493-0.503 %, the specific gravity of used cooking oil was between 0.888-0.892 %, and the absorbance was between 0.001-0.006. The results of this study were standardized using the Indonesian National Standard Method (SNI). The results show that 40 mesh of activated charcoal is better than 20 mesh.
Comparison of Hexane, Methanol, and Their Mixtures as Solvents for Microalgae Lipid Extraction by Hydrodynamic Cavitation Martomo Setyawan; Siti Jamilatun; Muhammad Nufail Syafii; Resyaldi Pratama
CHEMICA: Jurnal Teknik Kimia Vol 7, No 2 (2020): Desember 2020
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26555/chemica.v7i2.16803

Abstract

The process of producing biodiesel from microalgae as an effort to solve energy problems is currently constrained by the negative energy balance, which requires more energy to produce than the heating value of biodiesel. The lipid extraction assisted by hydrodynamic cavitation requires less energy extraction than the heating value of biodiesel. The effort to increase the energy efficiency of the hydrodynamic cavitation extraction process is to find a solvent that has a low boiling point. This study aims to improve energy efficiency by using a solvent mixture of hexane and methanol, which has a low boiling point. The results showed that the methanol hexane mixture with a volume ratio of 4:1 gave the lowest mixture boiling point of 51.2 °C with a yield of 3.28% g lipid/ g dry microalgae. The process runs at a temperature of 30 °C with a driving pressure of 5 kg/cm2, with an extraction energy requirement of 2 kJ/g of lipids. This process is feasible to be developed to produce biodiesel from microalgae with a positive energy balance.
Pengaruh Luas Perpindahan Panas Kondensor Terhadap Volume Asap Cair Terkondensasi Hasil Pirolisis Tempurung Kelapa Siti Jamilatun; Nurkholis Nurkholis
CHEMICA: Jurnal Teknik Kimia Vol 3, No 2 (2016): Desember 2016
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (329.414 KB) | DOI: 10.26555/chemica.v3i2.8019

Abstract

One of the products that can be made from coconut shell is making coconut shell carcoal by pyrolysis. In the pyrolysis process also produced liquid smoke, tar and uncondensed gasses. Liquid smoke is a byproduct of the activated charcoal industry has high economic value when compared with discharged into the atmosphere. Liquid smoke is a substance derived from the change of state to a liquid smoke, this process involves a change in the form of process heat transfer to the refrigerant fumes. Liquid smoke obtained simultaneously with the process of making charcoal (carbonization), smoke arising from incomplete combustion piped so that condensation will occur fluid droplets called liquid smoke. For coconut shell weight of 5 kg and 4 pipes condensor, the optimal volume of liquid smoke is 205 ml with a pyrolysis time 90 minutes and the theory of heat transfer surface area 0.076965 m2. For coconut shell weight of 5 kg and 8 pipes condensor, the optimal volume of liquid smoke is 215 ml with a pyrolysis time 90 minutes and the theory of heat transfer surface area 1.027437 m2. For coconut shell weight of 10 kg and 4 pipes condensor, the optimal volume of liquid is 183 ml with a pyrolysis time 300 minutes and the theory of heat transfer surface area 0.060404 m2. For 10 kg weight coconut shell and 8 pipes condensor, the optimal volume of liquid smoke is 205 ml with a pyrolysis time 210 minutes and the theory of heat transfer surface area 0.066801 m2.
The Effect of Single and Double Activation with Potassium Hydroxide 2N on Charcoal from Fir Wood (Casuarina Junghuhniana) Pyrolysis Siti Jamilatun; Eva Nurdiana Putri; Zulia Arifah; Ilham Mufandi
CHEMICA: Jurnal Teknik Kimia Vol 7, No 1 (2020): Juni 2020
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26555/chemica.v7i1.15651

Abstract

The purpose of this study was to know the influence of the single and double activation by using calcium hydroxide (KOH) with a concentration of 2N. The activation of KOH 2N applied in the activated carbon from pine wood. The activated carbon made through the pyrolysis process with a temperature variation of 500-600 ℃ for about 180 minutes. The experiment performed in two ways: (i) single activation of KOH 2N and (ii) double activation of KOH 2N.  The effects of ash content and Iod absorption content in activated carbon were studied. The results showed that the ash content about 8-30% and Iod absorption content about 317.25-507.60 mg Iod/gram carbon. The results of this study standardized by using the Indonesia National Standards (SNI) method. The result also indicated that the single activation was better than double activation of KOH.
Potensi Produk Cair (Oil Phase dan Water Phase) Pirolisis Mikroalga Sebagai Pengawet Makanan Siti Jamilatun; Martomo Setyawan; Ilham Mufandi; Arief Budiman
CHEMICA: Jurnal Teknik Kimia Vol 6, No 2 (2019): Desember 2019
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26555/chemica.v6i2.14813

Abstract

Microalgae is one of the oldest living organisms namely Thallophyta (plant lacking roots, stems, and leaves) that have chlorophyll as a pigment to mainly photosynthesis process. Microalgae as the water plant had some characteristics such as high carbohydrate, protein, and lipid content in which can be produced energy (liquid, solid, and gas) by using the pyrolysis process. The raw material in this experiment was used Spirulina platensis as the type of microalgae. The residue of Spirulina platensis was content acid, phenol, dan carbonyl in which this product liquid is potential as a food preservative. The experiment was performed by using the pyrolysis process which is equipped with a cooler (condenser) to condense the combustion vapor. Thermal decomposition was conducted in the pyrolysis reactor with a temperature of 300 ℃, 400 ℃, 500 ℃, and 600 ℃ under atmospheric condition. The result indicated that the pyrolysis proses had oil phase as the top result and water phase as the bottom result. The result from GC/MS analysis reported that the pyrolysis process on temperature of 300 ℃ can produce the oil phase with the phenol content of 6.7 wt.%, acid of 33.03 wt.%, carbonyl of 4.95 wt.%, and Poly Aromatic Hydrocarbon (PAH) of 6.23 wt.%, respectively. Otherwise, the pyrolysis process can produce the water phase (liquid smoke) on temperature 400 °C, 500 °C, dan 600 °C with the phenol content of 0.22 wt.%, acid content of 0.69-9.12 wt.%, carbonyl content of 10.46-13.02 wt.% and PAH of 26.93-45.18 wt.%. The superiority of preservatives from residual Spirulina platensis has a high nitrogenate content from protein decomposition (10.13-31.22 wt.%). High protein content in food preservatives can be used as an additive compound to increase protein intake.
Pyrolysis of Spirulina platensis Residue: Effect of Temperature without and with Fe-oxide catalyst Siti Jamilatun; Tyas Aji Kurniawan; Adhi Chandra Purnama; Irfan Maulana Putra
CHEMICA: Jurnal Teknik Kimia Vol 7, No 2 (2020): Desember 2020
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26555/chemica.v7i2.18077

Abstract

The limited reserves of fuel must resolve immediately. One of the renewable energy solutions that have the potential to come from biomass sources is microalgae. The advantages of microalgae compared to other biomass is the oil produced, the speed of growth, and it does not interfere with food availability. The processing of residual Spirulina platensis microalgae (SPR) by pyrolysis is exciting to do, does not cause pollution, and the technology is simple. This study's purpose was SPR pyrolysis with a grain size of 140 mesh without and with five (5) wt.% Fe-oxide catalyst. The variables studied were temperature on the yield of bio-oil products, water phase, charcoal, and gas. Pyrolysis was carried out in a fixed bed reactor at 300, 400, 500, 550, and 600 ⁰C. The higher the pyrolysis temperature, the higher the bio-oil yield, with the optimum catalyst at 400 ⁰C produced 15.34% and without a catalyst at a temperature of 500 ⁰C, namely 15.00%. The water yield phase in the range of 300-600 ⁰C is higher for catalyst use (30-39 %) than without catalyst (13.75-22.25%). The higher the pyrolysis temperature, the lower the yield char. The yield of gas without a catalyst was higher in the range of 30.69-38.94% compared to catalyst 12.58-26.18%. At a temperature of 300 ⁰C without a catalyst, the conversion obtained was 48.69%, while with a catalyst, 60.08%
Bio-oil from Oil Palm Shell Pyrolysis as Renewable Energy: A Review Joko Pitoyo; Totok Eka Suharto; Siti Jamilatun
CHEMICA: Jurnal Teknik Kimia Vol 9, No 2 (2022): August 2022
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26555/chemica.v9i2.22355

Abstract

Oil palm shell (OPS) is biomass with high carbon and hydrogen content, so it has the potential to produce renewable energy through the thermochemical method. Pyrolysis is a relatively inexpensive thermochemical method that continuously converts biomass into valuable gas, bio-oil, and char products. Bio-oil is used directly to fuel boilers and furnaces or to produce fuel oil. This article reviews the pyrolysis process of biomass from oil palm shells, discussing the operating parameters that influence the pyrolysis process and the method of upgrading bio-oil. This review shows a relationship between biomass composition (cellulose, hemicellulose, and lignin) and bio-oil yield. The water content in the raw material needs to be controlled at around 10%. The optimum particle size is closely related to the biomass's natural structure and reactor type. The higher the ash and fixed carbon content, the lower the bio-oil yield. The optimum temperature for pyrolysis is between 450-550 ºC. A high heating rate will increase the decomposition of biomass into bio-oil. Particle size and reactor type strongly influence feed rate, residence time, and reaction time. A fluidized bed reactor gives the highest bio-oil yield. Using plastic in co-pyrolysis and catalyst increases the heating value and decreases the oxygenated content.
Co-Authors Adhi Chandra Purnama Adi Permadi, Adi Agus Aktawan, Agus Alfi Zaini Amrillah, Nafira Alfian Ma’arif Amelia, Shinta Anak Agung Istri Sri Wiadnyani Anggun Puspitasari Anisa Salsabila Arief Budiman Arief Budiman Arief Budiman Arifah, Zulia Aster Rahayu Aster, Rahayu Auliasari, Putry Ayu Avido Yuliestyan Budhijanto Budhijanto Budhijanto Budhijanto, Budhijanto Budhijanto, B. Cahya Hakika, Dhias Defiani Putri Denanti Dhias Cahya Hakika Dhias Cahya Hakika Dhias Cahya Hakika Dita Permata Putri Dwi Astri Ayu Purnama Dwi Astri Ayu Purnama Dwita Sarah Efi Nopianti Eka Noviana Elies Permatasari Eling Widya Suminar Eliyantini Erna Astuti Eva Nurdiana Putri Febriani, Annisa Vada Firanita Anggraini Gonibala, Fajriansya H Hadiyanto Hadi Nasbey Hanum, Farrah Fadhillah Hanum, Farrah Hanum Hapsauqi, Iqbal Heidy Oktavia Nisa Ikko Nirwana Luthfiani Ilham Mufandi Ilham Mufandi Ilham Mufandi Ilham Mufandi Ilham Mufandi Ilham Mufandi Imelda Eka Nurshinta Imelda Ika Nurshinta Intan Dwi Isparulita Irfan Maulana Putra Irwan Mulyadi Isparulita, Intan Dwi Joko Pitoyo Joko Pitoyo Joko Pitoyo Joni Aldilla Fajri Karmila Astuti Lee Wah Lim Lia Aslihati Lukhi Mulia Shitophyta Lukhi Mulia Sithopyta Lukman Hakim Lutfiatul Janah M. Idris Martomo Setyawan Maryudi Maryudi Maya Fadilah Muhammad Aziz Muhammad Nufail Syafii Muhtadin, Akhmad Sabilal Muthadin , Akhmad Sabilal Mutia Endar Nurhidayah Nabila Fauzi Nafira Alfi Zaini Amrillah Nihanzah, Ardian Surya Putra Nirmalasari, Jiran Nur Aini Aini Nur Kholis Nuraini Nuraini Nurmustaqimah Nurmustaqimah, Nurmustaqimah Nurmustaqimaha, Nurmustaqimaha Nurmutaaqimah Othman, Mohamad Rizza Putri, Firanita Angraini Rahayu Aster Rahayu, Aster Ratih Mahardhika Remmo Sri Ardiansyah Resyaldi Pratama Rhomadoni, Firda Rizki Ria Rosania Rifka Alfiyani Ririn Martina Riska Setyarini Riska Utami Melani Putri Riska Utami Melani Putri Rochmadi Rochmadi Rochmadi Rochmadi Rochmadi, R. Rosdamayanti Salsabila, Anisa Setiawan, Muhammad Haryo Setya Wardhana, Budi Setyarini , Riska Shafa Zahira Shinta Amelia Shinta Amelia Shitopyta, Lukhi Mulia Siti Hartini Siti Nurhalizatul Aini Siti Salamah Siti Salamah Soedjatmiko Sofiana, Nurani Sri Ardiansyah, Remmo Sriyana, Ida Suhendra Suhendra Suhendra Suhendra Suhendra Taufiqurahman , Muhamad Akmal Totok Eka Suharto Tyas Aji Kurniawan Utaminingsih Linarti, Utaminingsih Veranica Veranica Veranica Veranica, Veranica W, Mila Utami Wardhana, Budi Setya Yeni Elisthatiana Yesi Yuniasari Yona Desni Sagita Zahira, Shafa Zahrul Mufrodi Zahrul Mufrodi, Zahrul Zulia Arifah Zulia Arifah