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All Journal BERKALA SAINSTEK Bulletin of Chemical Reaction Engineering & Catalysis Sinergi ROTOR: JURNAL ILMIAH TEKNIK MESIN UNEJ e-Proceeding JC-T (Journal Cis-Trans): Jurnal Kimia dan Terapannya SELAPARANG: Jurnal Pengabdian Masyarakat Berkemajuan Warta Pengabdian STATOR: Jurnal Ilmiah Mahasiswa Teknik Mesin Chemistry Indonesian Journal of Chemical Research CHEESA: Chemical Engineering Research Articles Dalton : Jurnal Pendidikan Kimia dan Ilmu Kimia Jurnal Kartika Kimia Jurnal Teknologi Jurnal Elemen J-Proteksion: Jurnal Kajian Ilmiah dan Teknologi Teknik Mesin Jurnal Teknik Kimia Indonesia International Journal on Food, Agriculture and Natural Resources (IJFANRES) Dedikasi: Jurnal Pengabdian kepada Masyarakat Jurnal Pijar MIPA Logic : Jurnal Rancang Bangun Dan Teknologi Journal of Biobased Chemicals (JOBC) Jurnal Teknik Kimia dan Lingkungan Bulletin of Chemical Reaction Engineering & Catalysis Jurnal Penelitian Sains dan Teknologi Indonesia

Boy Arief Fachri

Department Of Chemical Engineering, Faculty Of Engineering, University Of Jember, Jalan Kalimantan 37, 68121 Jember

Author-ID : 1300598

Agriculture, Biological Sciences & Forestry Humanities Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Health Professions Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mathematics Mechanical Engineering Medicine & Pharmacology Nursing Physics Public Health Social Sciences Other

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Heating Treatment of Incoming Air Combustion Chamber on the E20 Fuel Mixture: Perlakuan panas udara masuk ruang bakar pada campuran bahan bakar E20 Akbar Anugrah Ikhsani; Nurkoyim Kustanto; Boy Arief Fachri
Logic : Jurnal Rancang Bangun dan Teknologi Vol. 23 No. 1 (2023): March
Publisher : Unit Publikasi Ilmiah, P3M, Politeknik Negeri Bali

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31940/logic.v23i1.49-54

This research was conducted to improve engine performance with a mixture of ethanol and gasoline, because the mixture of ethanol and gasoline fuel causes the value of the flash point and evaporation of fuel heat to be higher. To overcome this, the air entering the combustion chamber is carried out by being heated to 26°C (standard), 30°C, 40°C and 50°C, the fuel used is the E20 with engine revolutions of 2000 to 8000 revolutions per minute. The results showed that the highest torque of E20 fuel at 30°C with a value of 9.004 Nm increased by 0.27%. At the highest power, it is located at 30°C with a power of 5.99 kW 0.5%. For the lowest consumption in the 2000 round, it was found in the 30°C temperature treatment with a value of 1.4 Kg / Hp.Hour and for exhaust gas emissions the lowest hydro carbon value was found in the 30°C temperature treatment while the lowest value of carbon monoxide was found at the 50°C temperature treatment. These results show that the air heating treatment can improve engine performance.

Optimization of Essential Oil Extraction of Beluntas (Pluchea Indica L.) Leaves by Using Solvent-Free Microwave Extraction Nur Karima; Nova Chintya Kurniawati; Boy Arief Fachri; Istiqomah Rahmawati; Bekti Palupi; Mahfud Mahfud; Ditta Kharisma Yolanda Putri; Atiqa Rahmawati; Badril Azhar; Maktum Muharja
Jurnal Teknik Kimia dan Lingkungan Vol. 6 No. 2 (2022): October 2022
Publisher : Politeknik Negeri Malang

Beluntas (Pluchea Indica L.) which commonly used as astringent and antipyretic has a high potential for the feedstock of essential oil production. The objective of this work is to optimize solvent-free microwave extraction (SFME) of Beluntas leaves by using response surface methodology (RSM). Box-Behnken Design with the variations of extraction time (60-120 min), feed/distiller ratio (0.06-0.1 g/ml), and heating power (150-450 W) was utilized to optimize essential oil yield. The feed/distiller ratio factor had the highest significant effect on the essential oil yield (P<0.05). Essential oil yield increased as the increase of oil heating power and time extraction, and vice versa. On the other hand, the increase in the feed/distiller ratio gave a negative impact on the essential oil yield. The maximum essential oil yield using SFME method of 0.2728 b/b% was obtained for the optimized condition of extraction time of 90 min, microwave heating power of 450 W, and feed/distiller ratio of 0.06.

Microwave-Assisted Hydrolysis Batang Tembakau untuk Produksi Gula Pereduksi sebagai Bahan Baku Bioetanol Bekti Palupi; Bimo Bayu Aji; Mizanurafi’ Ghifarhadi Prasiefa; Ditta Kharisma Yolanda Putri; Istiqomah Rahmawati; Boy Arief Fachri; Meta Fitri Rizkiana; Helda Wika Amini
Jurnal Teknologi Vol 10, No 2 (2023): Jurnal Teknologi
Publisher : Universitas Jayabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31479/jtek.v10i2.225

Tumbuhan tembakau yang diproduksi dengan skala besar di Indonesia ternyata memiliki problematika, yaitu limbah dari batangnya sekitar 2.000.000 ton yang tersedia setiap tahunnya dan belum dimanfaatkan. Batang tumbuhan secara umum mengandung lignin, selulosa, dan hemiselulosa, termasuk batang tembakau yang menjadi limbah. Kandungan lignin terlebih dahulu dihilangkan dengan proses pretreatment basa sebelum hidrolisis. Proses hidrolisis yang menggunakan microwave-assisted dengan basa akan mengkonversi selulosa dan hemiselulosa menjadi gula pereduksi yang selanjutnya difermentasi untuk memperoleh bioetanol. Proses hidrolisis dalam penelitian ini menggunakan 3 gram serbuk batang tembakau yang sudah dipretreatment dan dicampurkan dengan larutan natrium hidroksida (NaOH) dengan rentang konsentrasi 2 - 5%. Selanjutnya diproses menggunakan microwave untuk diiradiasi dengan daya 250 - 350 watt selama 5 - 15 menit. Penelitian ini menggunakan Software Design Expert yang disesuaikan dari pendekatan Response Surface Methodology (RSM) serta model Central Composite Design (CCD) sehingga didapatkan 20 kali running pada penelitian ini. Hasil gula pereduksi paling tinggi sebesar 7,40 mg/mL didapatkan pada percobaan ke-17 dengan konsentrasi larutan NaOH 2%, daya microwave 350 watt, dan selama 15 menit.

Optimization of Microwave-Assisted Alkali Pretreatment for Enhancement of Delignification Process of Cocoa Pod Husk Maktum Muharja; Rizki Fitria Darmayanti; Bekti Palupi; Istiqomah Rahmawati; Boy Arief Fachri; Felix Arie Setiawan; Helda Wika Amini; Meta Fitri Rizkiana; Atiqa Rahmawati; Ari Susanti; Ditta Kharisma Yolanda Putri
Bulletin of Chemical Reaction Engineering & Catalysis 2021: BCREC Volume 16 Issue 1 Year 2021 (March 2021)
Publisher : Masyarakat Katalis Indonesia - Indonesian Catalyst Society (MKICS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.9767/bcrec.16.1.8872.31-43

In this study, the optimization of microwave-assisted alkaline (MAA) pretreatment is performed to attain the optimal operating parameters for the delignification of cocoa pod husk (CPH). The MAA performance was examined by heating the CPH solid with different particle sizes (60–120 mesh) and NaOH solution with a different sample to a solvent (SS) ratio (0.02–0.05 g/L), for short irradiation time (1–4 min). Box-Behnken Design (BBD) was utilized to optimize the percentage of lignocellulose composition changes. The results show that by enlarging particle size, the content of lignin and cellulose decreased while hemicellulose increased. By prolong irradiation time, the content of lignin and hemicellulose decreased while cellulose elevated. On the other hand, increasing the SS ratio was not significant for hemicellulose content changes. From FTIR and SEM characterization, the MAA drove the removal of lignin and hemicellulose of CPH and increased cellulose slightly. Supported by kinetic study which conducted in this work, it was exhibited that MAA pretreatment technology is an effective delignification method of CPH which can tackle the bottleneck of its commercial biofuel production. Copyright © 2021 by Authors, Published by BCREC Group. This is an open access article under the CC BY-SA License (https://creativecommons.org/licenses/by-sa/4.0).

Extraction of Basil Leaves Essential Oil using Microwave Assisted Hydrodistillation Method: Physical Characterization and Antibacterial Activity Putri, Ditta Kharisma Yolanda; Putri, Salsabila Ananda; Nugraha, Briantara Agung; Fachri, Boy Arief; Palupi, Bekti
CHEESA: Chemical Engineering Research Articles Vol. 6 No. 1 (2023)
Publisher : Universitas PGRI Madiun

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25273/cheesa.v6i1.14639.1-12

Basil oil can be obtained from basil leaves by non-extraction methods, namely Microwave Assisted Hydrodistillation (MAHD). Therefore, this research aims to determine the yield percentage, essential oil composition by GC-MS, physical characteristics, and antibacterial activity of basil essential oil. The highest yield of 0.3076% was obtained at the optimum condition, which included a microwave power of 300 W, a mass-to-volume solvent ratio (F/S) of 0.75 g/mL, a raw material size of ± 1.75 cm, and an extraction time of 90 min. The results of the analysis of variance showed that all process parameters used had a significant effect on the yield obtained. Basil oil exhibited a larger inhibition zone against Escherichia coli bacteria (16.38 mm) which tended to be stronger than Staphylococcus aureus (5.95 mm) and was classified as moderate. The main components contained in the basil oil were E-Citral (46.79%) and Z-Citral (38.17%). The physical characteristic test showed that the basil oil was soluble in 96% ethanol after a ratio of 1:9, with 1 ml of basil oil compared to 9 ml of ethanol. The density of basil oil at 0.961 g/mL also complied with the standard value according to the Essential Oil Association (EOA) of Ocimum basilicum Essential Oil. These results showed revealed that the parameter analyzed using oil yields at operating conditions produced the most optimum yield value.

Optimization of Ulva sp. Decomposition using H2SO4 with Microwave-Assisted Hydrolysis Method as Feedstock of Bioethanol Palupi, Bekti; Rizalluddin, Muhammad; Septianti, Kiki; Rahmawati, Istiqomah; Fachri, Boy Arief; Rizkiana, Meta Fitri; Amini, Helda Wika
CHEESA: Chemical Engineering Research Articles Vol. 6 No. 1 (2023)
Publisher : Universitas PGRI Madiun

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25273/cheesa.v6i1.14682.13-25

Bioethanol is a renewable energy used to reduce dependence on fossil fuels, which have negative impacts on the environment. Furthermore, Ulva sp. contains high levels of carbohydrates, making it potentially suitable as a raw material for bioethanol production. Therefore, this study aims to determine the optimal decomposition process using the microwave-assisted hydrolysis method with an acid solvent (H2SO4), by examining the effects of acid concentration, hydrolysis time, and microwave power. Optimization was carried out using several parameters such as hydrolysis time, microwave power, and the ratio of raw materials to solvents. The ANOVA test results showed that the hydrolysis variable parameter had a significant effect on the reducing sugar content obtained, evidenced by the R2 value of 0.9892. The highest reducing sugar content of 19.71 mg/mL was produced under the operating conditions of 15 min hydrolysis time, 450 W microwave power, and 0.065 g/mL ratio of raw material to solvents.

Pengaruh Intensitas Cahaya dan Nutrisi Terhadap Laju Pertumbuhan Ulva sp. Palupi, Bekti; Maharani, Regita Gustiayu Pramisti; Wardani, Salza Belila Kusuma; Rizkiana, Meta Fitri; Amini, Helda Wika; Fachri, Boy Arief; Rahmawati, Istiqomah; Muharja, Maktum; Indrayani, Lilin
Jurnal Teknologi Vol. 11 No. 2 (2024): Jurnal Teknologi
Publisher : Universitas Jayabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31479/jtek.v11i2.272

Ulva sp. adalah genus makroalga hijau dengan diameter permukaan yang besar. Manfaat dari kapasitas fotosintesis yang tinggi pada Ulva sp. sebagai media penyerapan nutrisi seperti amonium, nitrat, dan fosfor dengan tingkat yang tinggi. Ulva sp. termasuk alga yang tumbuhnya berdasarkan musim, untuk itu diperlukan budidaya guna memenuhi kebutuhan. Penelitian ini bertujuan untuk mengetahui pengaruh intensitas cahaya dan jumlah nutrisi terhadap kadar klorofil total dan laju pertumbuhan spesifik Ulva sp. Variabel yang digunakan adalah intensitas cahaya sebesar 1000 sampai dengan 3000 Lux serta jumlah nutrisi yang digunakan yaitu 0,6 mg/L hingga 1,8 mg/L. Penelitian ini dilakukan dengan lama penyinaran selama 12 jam. Prosedur yang dilakukan berupa pemeliharaan Ulva sp. dengan wadah terkontrol dilanjutkan dengan pengujian kadar nitrogen total, pengujian kadar fosfat, pengujian kadar klorofil, dan laju pertumbuhan spesifik. Didapatkan nilai derajat keasaman atau pH pada wadah penelitian berkisar 6,5 – 8,5, suhu berada di antara 24 – 26°C, dan salinitas 35 – 37 ppt. Hasil analisis menghasilkan data yang baik jika ditinjau dari nilai p-value yang memiliki nilai kurang dari 0,05. Keywords: aklimatisasi, Ulva sp., nutrisi, klorofil, laju pertumbuhan

Pemberdayaan Sumber Daya Lokal Dengan Pemanfaatan Limbah Kulit Kopi Robusta (Coffea canephora) Sebagai Biobriket di Desa Tanah Wulan Kabupaten Bondowoso Purimahua, Amanda Augre Maharani; Hidayat, Debby Aurellia; Dihayat, Icha Shofia; Herdianto, Dimas Nur; Asshofy , Muhammad Agil; Khotimah, Husnul; Lumbantoruan, Sri Lestari; Firmansyah, Muhammad Sahrul; Pravitasiwi, Nanda Tricya Julia; Ramadana, Ifan; Uzinuzulla, Yunita Virda; Palupi, Bekti; Fachri, Boy Arief; Rahmawati, Istiqomah
Dedikasi:Jurnal Pengabdian kepada Masyarakat Vol. 4 No. 2 (2024): Jurnal Dedikasi
Publisher : Universitas Jayabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31479/dedikasi.v4i2.292

Chemical Engineering Mengabdi 2023 is a manifestation of community service contained in one of the tridharma of higher education. Chemical Engineering Mengabdi 2023 activities are a means of transferring knowledge and technology from academics to the community. In the implementation of this activity, Chemical Engineering students of Jember University are expected to help the community overcome the problem of robusta coffee skin waste, and can empower the economy of Tanah Wulan Village residents by providing knowledge about the utilization of local resources and the utilization of coffee skin waste into briquette products with high economic value. The implementation of the service is divided into two, namely socialization and practice of making biobriquettes. Socialization activities were carried out to convey material on processing coffee skin waste into briquettes. Furthermore, the practice of making biobriquettes is carried out using the pyrolysis method. In this service activity, an environmentally friendly biobriquette product was obtained, which has consistent heat efficiency, and an economical price.

Quantitative Structure-Activity Relationship Study of Ester-Based Ferulic Acid Derivatives Against Cervical Cancer Cell (HELA) Helda Wika Amini; Istiqomah Rahmawati; Rizki Fitria Darmayanti; Boy Arief Fachri
Journal of Biobased Chemicals Vol. 1 No. 1 (2020): Journal of Biobased Chemicals
Publisher : Program Studi Teknik Kimia Universitas Jember

Quantitative structure-activity relationship (QSAR) has been studied for ferulic acid derivatives to determine the QSAR model able to predict anticancer. As the subject of this research was a set of experimentally calculated IC50 value data of 6 ferulic acid derivatives against cervical cancer cells (HELA). QSAR analysis was based on multilinear regression calculation on fitting subset using log (1/IC50) as the dependent variable, and dipole moment, partition coefficient in the n-octanol/water, and atomic net charges of the aromatic carbons as independent variables. The values of the descriptors were obtained from semiempirical PM3 quantum mechanic calculation. The relationship between log (1/IC50) and the descriptors was described by the result in the QSAR model. The QSAR model for ferulic acid derivatives against HELA cell lineswas developed with the statistical parameters of R=0.998; R2=0.999; SE=0.00857; and F=394. The calculated log (1/IC50) using QSAR Hansch Model for ferulic acid derivatives have excellent agreement with experimental data of Log (1/IC50).

Extraction of Antioxidant Compounds from Sargassum sp. Using Water and Ultrasound Assisted Extraction Method as A Derivation of Green Chemistry Principles Ratnasonia, Samantha Githa; Fachri, Boy Arief; Palupi, Bekti
Journal of Biobased Chemicals Vol. 2 No. 1 (2022): Journal of Biobased Chemicals
Publisher : Program Studi Teknik Kimia Universitas Jember

The content of bioactive compounds in Sargassum sp. already used in various fields. The Ultrasound Assisted Extraction (UAE) method and water solvent has met the principles of green chemistry so that it is used in this study as a method of extracting antioxidant compounds contained in Sargassum sp. The principle of green chemistry has the main goal of reducing or eliminating the impact of environmental damage. This research was conducted with several process variables, including the ratio of the sample mass to the volume of solvent (0.05 – 0.15 g/mL), time (30 – 40 minutes) and power (170 – 180 W) using the UAE method and water solvent (aquadest) on the total phenol value of Sargassum sp. result. Analysis of variance was carried out with the help of Design Expert software, Response Surface Method - Central Composite Design to determine the effect of the process variables carried out in the extraction process on the total phenol yield. The analysis of variance in this study shows the suitability between the research design and the results of the study which is indicated by an R2 value of 0.9785. The highest results were obtained with a variable ratio of sample mass to solvent volume of 0.18 (g/mL), time of 40 minutes and power of 180 W with a total phenol yield of 212.8 mg GAE/g and antioxidant activity of 12.3%.

Co-Authors Abdul Malik Karim Amrullah Adrian, Febri Afred, Merymistika Yufrani Afwal, Diza Raudhatul Ahmad Syuhri Aini, Dwi Intan Noer Ainia, Hilda Huril Akbar Anugrah Ikhsani Akmal, Gavinda Tsubutul Al Fajri, Maktum Muharja Alex Ttesa Elsyamba Alfinaini, Nur Aini Dwi Alfinaini Alifia Rahma Putri Neysella Anggraini, Ranita Anggi Annisa, Yasmin Ansori Ansori Ardila Dwi Tresna Ari Susanti Arief Budiman Aris Zainul Muttaqin Asshofy , Muhammad Agil Atiqa Rahmawati Atiqa Rahmawati Azzahrah, Anak Agung Nabilla Badril Azhar Badril Azhar Bekti Palupi Bimo Bayu Aji Buana, Nayyara Aida Danang Muharyanto Dianavita Fatimah Digdo Listyadi, Digdo Dihayat, Icha Shofia Dini Rahmawaty Ditta Kharisma Yolanda Ditta Kharisma Yolanda Putri Doddy Parningotan Elisah, Nor Elsyamba, Alex Ttesa Erna Subroto Farwah, Zilma Aliyah Fatimah, Dianavita Felix Arie Setiawan Firmansyah, Muhammad Sahrul Ghina Shofiah Adibah Khoirunnisa Gregah Pangayoman Hartanto P Habibatul Inayah Harti Arini Helda Wika Amini Helda Wika Amini Heni Pujiastuti Herdianto, Dimas Nur Hidayat, Debby Aurellia I Made Arimbawa Indrayani, Lilin Intan Hardiatama Istiqomah Rahmawati Istiqomah Rahmawati Kristianta, Franciscus Xaverius Lailatul Fatma Lestari, Afrila Tutut Dwijati Lukman Nulhakim Lumbantoruan, Sri Lestari M Edoward Ramadhan M Nurkoyim Kustanto M Yuda Pratama Maharani, Regita Gustiayu Pramisti Mahfud Mahfud Mahfud Mahfud Mahros Darsin Maktum Muharja Maulida Septiyana Meta Fitri Rizkiana Mizanurafi’ Ghifarhadi Prasiefa Mochamad Edoward Ramadhan Mohammad Nor Muhammad Reza Muhammad Reza Muharja, Maktum Mukhammad Fauzi Nabilah Lu’aili Fauziah Nadia Ayumna Fa’iqoh Naraismanti, Nirina Indi Nikita Meidi Nova Chintya Kurniawati Nova Chintya Kurniawati Nugraha, Briantara Agung Nugroho, Yeremia Prasetya Nur Karima Nur Karima Nurkoyim Kustanto Nurtsulutsiyah Nurtsulutsiyah Nurtsulutsiyah Nurtsulutsiyah Nurtsulutsiyah, Nurtsulutsiyah Permatasari, Ocita Galuh Pradipta, Shima Nuril Pratama, Ilyas Arya Pratamai Shelli Pravitasiwi, Nanda Tricya Julia Purimahua, Amanda Augre Maharani Puspita Sari Putri, Navisa Ayudia Putri, Salsabila Ananda R Rochmadi Rahman, Agus Ramadana, Ifan Ratnasonia, Samantha Githa Ratri Sekaringgalih Regita Gustiayu Pramisti Maharani Renald Rochman Mauludy Reswara Musyafa Rizalluddin, Muhammad Rizki Abdus Syatar Rizki Fitria Darmayanti Rizki Fitria Darmayanti Rizky Pratama, Reinaldi Rumaisha-Zuhriansyah, Rayya Safira Nur Oktavia Salsabila, Putri Ayu Santoso Mulyadi Sa’roni, Achmad Septianti, Kiki Shabrina, Nadhilah Sholeha, Irdatus Slamet Pujianto Suryagama, Muhammad Nabil Sutarsi, Suratsi Syatar, Rizki Abdus Tri Elok Setya Megasari Udroto, Firsta Retnaningtyas Uzinuzulla, Yunita Virda Wardani, Salza Belila Kusuma Wardhani, Maharani Tri Watiningsih, Lusi Karlina Wiwik Pratiwi Yakub Hendrikson Manurung Zuhriah Mumtazah

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