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All Journal BERKALA SAINSTEK Sinergi ROTOR: JURNAL ILMIAH TEKNIK MESIN UNEJ e-Proceeding Konversi JC-T (Journal Cis-Trans): Jurnal Kimia dan Terapannya ALCHEMY Jurnal Penelitian Kimia JMM (Jurnal Masyarakat Mandiri) 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 Makara Journal of Science 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 Dinamika Kerajinan dan Batik: Majalah Ilmiah
Boy Arief Fachri
Department Of Chemical Engineering, Faculty Of Engineering, University Of Jember, Jalan Kalimantan 37, 68121 Jember
Agriculture, Biological Sciences & Forestry Arts 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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[RETRACTED] Preparation and Characterization of Propolis (Trigona sp.) Extract-Loaded Chitosan Tripolyphosphate Nanoparticles Sari, Puspita; Watiningsih, Lusi Karlina; Fachri, Boy Arief; Fauzi, Mukhammad; Sutarsi, Suratsi; Rumaisha-Zuhriansyah, Rayya
International Journal on Food, Agriculture and Natural Resources Vol 5, No 4 (2024): IJ-FANRES
Publisher : Food, Agriculture and Natural Resources - NETWORKS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46676/ij-fanres.v5i4.298

Abstract

Propolis contains natural polyphenolic compounds with various biological activities, however, its application is limited due to low water solubility, instability in an aqueous medium, and low absorption rate in the body. The solution to overcome these drawbacks is to create nanoparticles of propolis extract. In this study, we encapsulated propolis extract in nanoparticles (propolis extract-loaded nanoparticles, PE-NP) using low/medium molecular weights of chitosan (LMW/MMW) and cross-linker sodium tripolyphosphate (TPP) by ionic/ionotropic gelation method as wall materials. We examined the physical characteristics (pH, turbidity, encapsulation efficiency, particle size, polydispersity index, zeta potential) and antioxidative properties of PE-NP prepared with the different molecular weights of chitosan, various concentrations of chitosan, and different volumes of propolis extracts. The resulting PE-NP revealed low encapsulation efficiency (23.937 - 41.192%) and pH in the range of 3.9 - 4.8. PE-NP also presented antioxidant capacity that was contributed by polyphenolic compounds in propolis extract. The suspension of PE-NP had a particle size of 350.000 - 488.280 nm with PDI values higher than 0.3 (heterogeneous dispersion), and positive zeta potential (39.340 - 48.200 mV), resulting in stable nanoparticles. The PE-NP produced can be used as functional ingredients in the food industry due to their antioxidative property.[This article has been officially retracted upon the request of the author]
Kinetics Study in Essential Oil Extraction from Basil Leaves by Microwave Assisted Hydrodistillation Putri, Ditta Kharisma Yolanda; Udroto, Firsta Retnaningtyas; Fatimah, Dianavita; Fachri, Boy Arief; Rahmawati, Istiqomah; Mumtazah, Zuhriah; Palupi, Bekti; Al Fajri, Maktum Muharja
Jurnal Teknik Kimia dan Lingkungan Vol. 9 No. 1 (2025): April 2025
Publisher : Politeknik Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33795/jtkl.v9i1.4930

Abstract

Essential oil is compounds that contained in plants and have many benefits. Basil is an aromatic plant that can produce essential oils. Essential oils can be extracted from basil leaves using Microwave Assisted Hydrodistillation (MAHD) method. To determine the efficiency of the MAHD method, it’s necessary to study the kinetics of the extraction method. It’s because kinetic studies can be used to identify the optimal point in the process where the highest efficiency is obtained, so the extraction process can be optimized. The aim of this research is to evaluate the suitable kinetic model for the basil leaf extraction process using the MAHD method. This extraction using 100 grams of basil leaves and 200mL aquadest, heated at various microwave power 150W, 300W, and 450W. The extractions were carried out for 70 minutes with 10 min intervals. The results showed that the largest oil yield was obtained when using 450W power, which was 0.190 grams. Based on the experimental data obtained, the most suitable kinetic model is second-order model. This can be analyzed from the highest R2 (0.9946 – 0.9999) and the lowest RMSE (0.0062 – 0.0349). Increasing the irradiation power will affect the extraction rate and parameter values of each kinetic model.
Microwave-Assisted Deep Eutectic Solvent Extraction of Lipids from Ulva sp.: Optimization and Fatty Acid Profiling Rizkiana, Meta Fitri; Lestari, Afrila Tutut Dwijati; Sholeha, Irdatus; Palupi, Bekti; Putri, Ditta Kharisma Yolanda; Rahmawati, Istiqomah; Amini, Helda Wika; Fachri, Boy Arief
Jurnal Pijar Mipa Vol. 20 No. 5 (2025)
Publisher : Department of Mathematics and Science Education, Faculty of Teacher Training and Education, University of Mataram. Jurnal Pijar MIPA colaborates with Perkumpulan Pendidik IPA Indonesia Wilayah Nusa Tenggara Barat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jpm.v20i5.9588

Abstract

Ulva sp. is a green alga commonly found in Indonesian waters. It contains approximately 60% carbohydrates, 10–47% protein, and 1–3% lipids. This study aimed to determine the optimum conditions for lipid extraction from Ulva sp. A pre-treatment step was carried out by adding a Deep Eutectic Solvent (DES) and distilled water. The DES used was a mixture of zinc chloride and urea in a 1:2 molar ratio. The sample was then mixed with a chloroform-methanol solvent (2:1 v/v) and subjected to Microwave-Assisted Extraction (MAE). The variables investigated in this study included microwave power (150, 300, and 450 W), extraction time (10, 15, and 20 min), and solvent volume (45, 60, and 75 mL). The organic phase obtained from the extraction process was separated and evaporated to determine the lipid yield. The highest yield, 15.8%, was achieved under conditions of 20 min extraction time, 75 mL solvent volume, and 300 W of power. GC-MS analysis of the highest-yield sample revealed the presence of fatty acids including palmitic acid, oleic acid, and palmitoleic acid. This optimized method supports future applications in biodiesel production and green extraction processes for algae-based bioresources.
EKSTRAKSI PROTEIN DARI SPIRULINA SP DALAM PELARUT ETANOL TERBANTUKAN GELOMBANG ULTRASONIK Fachri, Boy Arief; Palupi, Bekti; Rahmawati, Istiqomah; Rizkiana, Meta Fitri; Amini, Helda Wika
Jurnal Penelitian Sains dan Teknologi Indonesia Vol 1 No 1 (2022): Jurnal Hasil Penelitian UNIVERSITAS JEMBER
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat (LP2M) Universitas Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19184/jpsti.v1i1.90

Abstract

Protein merupakan komponen nutrisi yang dibutuhkan oleh manusia untuk kesehatan tubuh. Salah satu sumber protein yang melimpah di Indonesia adalah alga Spirulina Sp. Ekstraksi protein alga, sulit dilakukan. Hal ini dikarenakan, protein tersimpan dalam sel-sel alga yang memiliki dinding yang sangat keras. Metode konvensional yang selama ini dilakukan membutuhkan waktu yang sangat lama, dan energi yang besar. Untuk mengatasi hal itu, sebuah metode alternatif yang diajukan dalam penelitian ini, adalah metode ekstraksi ultrasonik. Tujuan penelitian ini adalah untuk menentukan kondisi optimum ekstraksi protein dari Spirulina Sp dan mengetahui pengaruh parameter ekstraksi terhadap yield. Sprirulina Sp yang tekah dikeringkan dan dihaluskan diumpankan ke dalam ekstraktor yang berisi etanol. Gelombang ultrasonic, kemudian dialirkan ke dalam ekstraktor melalui probe. Setelah, eaktu ekstraksi tercapai, ekstrak dan residu dipisahkan dengan cara sentrifugasi dengan kecepatan 10000 rpm pada suhu kamar. Selanjutnya, yield protein ekstrak dihitung dengan analisa Lowry-Bradford. Pengaruh parameter proses seperti rasio bahan baku-pelarut (0:1-0.5) g/mL, ukuran partikel bahan baku (600-800) mesh dan waktu ekstraksi 15-45 menit) terhadap yield akan diamati dalam penelitian ini. Berdasarkan hasil penelitian, dapat disimpulkan bahwa yield tertinggi sebesar 80,87 % diperoleh pada kondisi rasio bahan baku-pelarut 0.2 g/mL, ukuran partikel bahan baku 700 mesh dan waktu ekstraksi 30 menit. Sementara itu, ukuran partikel merupakan parameter yang paling signifikan.
A Comparison of Unconventional Microwave and Ultrasound-Assisted Extraction Methods used for Flavonoids Rahmawati, Istiqomah; Azizi, Daffa Hafiziaulhaq; Wibowo, Jihan Nafila; Reza, Muhammad; Fachri, Boy Arief; Palupi, Bekti; Rizkiana, Meta Fitri; Amini, Helda Wika; Ramadana, Ifan; Setiawan, Felix Arie
Makara Journal of Science Vol. 29, No. 1
Publisher : UI Scholars Hub

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Cocoa pods (Theobroma cacao L.) are a rich source of flavonoids, which are natural antioxidants known for their health benefits. This study investigated the use of microwave-assisted extraction (MAE) and ultrasound-assisted ex-traction (UAE) to extract the maximum flavonoids and antioxidants from cocoa pods. MAE and UAE are efficient and sustainable methods for extracting bioactive compounds like flavonoids and antioxidants from cocoa pods, offer-ing faster extraction, reduced solvent use, and better compound preservation compared to conventional methods. These technologies unlock the untapped potential of cocoa pods for applications in food, cosmetics, and pharmaceuti-cals. The effects of extraction time (2–10 min), microwave power (100–300 W), and the ratio of cocoa husk powder to solvent (0.02–0.06 g/mL) were evaluated for MAE. Meanwhile, for UAE, different temperatures (30–50 °C), times (10–30 min), and powers (16–48 W) were studied. The Design-Expert® software with Response Surface Methodology (RSM) and a Box-Behnken Design was utilized to analyze the effects of a combination of these parameters. The re-sults showed that extraction time, microwave power, and the ratio of cocoa husk powder–solvent significantly affected the total flavonoid yield and antioxidant capacity. The highest total flavonoid yield obtained by the MAE method (123.07 ppm) was at an extraction time of 10 min, cocoa husk–solvent ratio of 0.06 mg/mL, and microwave power of 300 W. The extract obtained by the MAE method showed an excellent antioxidant capacity of 43.49 mg/mL GAEAC, and a robust antioxidant activity indicated by an IC50 value of 42.19. Conversely, the highest total flavonoid yield of the UAE method (8.45 mg/mL GAEAC) was achieved at 30 min, 40 °C, and 40 W. The extract from the UAE method demonstrated a better antioxidant capacity (7.51 mg/mL GAEAC) and antioxidant activity (IC50 value of 23.46) than that from the MAE technique
Pemanfaatan Ulva sp. pada Sistem High Rate Algae Reactor (HRAR) untuk Pengolahan Limbah Cair Batik Palupi, Bekti; Megasari, Tri Elok Setya; Adelina, Saltsabita Nourin; Fachri, Boy Arief; Rahmawati, Istiqomah; Rizkiana, Meta Fitri; Amini, Helda Wika; Muharja, Maktum; Mumtazah, Zuhriah
Dinamika Kerajinan dan Batik: Majalah Ilmiah Vol. 41 No. 2 (2024): DINAMIKA KERAJINAN DAN BATIK : MAJALAH ILMIAH
Publisher : Balai Besar Standardisasi dan Pelayanan Jasa Industri Kerajinan dan Batik

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22322/dkb.v41i2.8466

Abstract

Batik merupakan salah satu warisan budaya Indonesia. Dalam produksinya, batik menggunakan bahan pewarna, malam, dan zat-zat kimia lainnya. Penggunaan bahan tersebut menghasilkan limbah cair dengan kandungan kadar minyak dan lemak, COD, dan pH yang tinggi. Selain itu, limbah yang dibuang langsung ke lingkungan merupakan limbah yang beracun dan dapat merusak ekosistem. Metode High Rate Algae Reactor (HRAR) menggunakan Ulva sp. digunakan pada penelitian ini. Penelitian ini bertujuan untuk mengetahui pengaruh konsentrasi tablet CO2, lama penyinaran, dan banyaknya suspensi Ulva sp. dalam pengolahan limbah. Ulva sp. sebanyak 5 – 15% dimasukkan ke dalam HRAR bersamaan dengan limbah cair batik, kemudian dilakukan penambahan tablet CO2 sebanyak 0,27 – 0,81 gram yang selanjutnya dilakukan penyinaran selama 6 – 24 jam. Optimasi pengolahan limbah dilakukan menggunakan metode RSM (Response Surface Methodology) dengan rancangan percobaan kombinasi perlakuan Central Composite Design (CCD) menggunakan software Design Expert 13. Berdasarkan hasil penelitian, variabel pengolahan limbah paling optimal berada pada saat konsentrasi suspensi Ulva sp. 5%, lama penyinaran 24 jam, dan massa tablet CO2 sebesar 0,27 gram. Respon yang diperoleh pada variabel tersebut yakni kadar COD 48,2 mg/L, kadar minyak dan lemak 0,432 mg/L, serta nilai pH 7,929.
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

Abstract

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.
Strategi Pengemasan dan Pemasaran Lilin Aromaterapi dan Sabun Cuci Piring dari Minyak Jelantah Sella Violina Anggraeni; Naily Fatimatuz Zaroh; Amalia Ramadhan; Mochamad Ghaza Al Ghifari; Richa Febyola Surya Putri; Boy Arief Fachri; Bekti Palupi; Meta Fitri Rizkiana; Istiqomah Rahmawati
Dedikasi:Jurnal Pengabdian kepada Masyarakat Vol. 6 No. 1 (2025): Jurnal Dedikasi
Publisher : Universitas Jayabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31479/dedikasi.v6i1.423

Abstract

Desa Plalangan yang terletak di Kecamatan Kalisat, Kabupaten Jember, merupakan salah satu desa binaan Universitas Jember dengan potensi besar dalam pengembangan produk ramah lingkungan. Masyarakat desa ini sebelumnya telah dilatih untuk mengolah minyak jelantah menjadi sabun cuci piring dan lilin aromaterapi, namun aspek pengemasan dan pemasaran produk masih perlu ditingkatkan agar memiliki nilai jual lebih tinggi. Program pengabdian ini bertujuan untuk memberikan pelatihan strategi packaging dan marketing produk berbasis minyak jelantah agar masyarakat mampu mengembangkan usaha secara mandiri. Metode pelaksanaan meliputi pendalaman mutu produk, perancangan desain kemasan, pelatihan strategi pemasaran offline dan online, serta evaluasi tingkat pemahaman peserta. Hasil kegiatan menunjukkan peningkatan wawasan dan kreativitas warga dalam mendesain kemasan yang menarik dan fungsional, serta pemahaman mengenai cara promosi produk baik melalui penjualan langsung (face to face selling) maupun live selling di platform digital seperti TikTok. Program ini diharapkan dapat memperkuat daya saing produk lokal, meningkatkan pendapatan masyarakat, serta mendukung terwujudnya ekonomi sirkular berbasis lingkungan di Desa Plalangan.
PENERAPAN TEKNOLOGI BIOMASS DIGESTER REACTOR DENGAN FEEDBACK CONTROL SYSTEM UNTUK PEMBUATAN BIOGAS DARI KOTORAN SAPI DALAM MEWUJUDKAN SDG’S DESA Amini, Helda Wika; Fachri, Boy Arief; Novita, Elida; Khotimah, Husnul; Zikrillah, M; Abi, Moch Irgi Fadhilal; Budiarti, Lutfia Pradisha; Ismail, Abdul Fatah; Permana, Rafly Surya
JMM (Jurnal Masyarakat Mandiri) Vol 9, No 1 (2025): Februari
Publisher : Universitas Muhammadiyah Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31764/jmm.v9i1.28156

Abstract

Abstrak: Desa Tanah Wulan menghadapi masalah penumpukan kotoran sapi yang mencemari lingkungan dan berisiko terhadap kesehatan. Tujuan pengabdian ini adalah memberdayakan masyarakat dengan meningkatkan keterampilan teknis (hardskill) dalam pengoperasian dan pemeliharaan teknologi Biomass Digester Reactor (BDR), serta pemahaman tentang manfaat biogas. Selain itu, kegiatan ini juga bertujuan memperkuat softskill dalam kerja sama pengumpulan dan distribusi kotoran sapi melalui pembentukan kelompok kerja di tingkat RT atau dusun. Kegiatan melibatkan 6 mahasiswa Universitas Jember dan masyarakat setempat, dengan mitra Kelompok Ternak yang berjumlah 20 orang dan Pemerintah Desa yang berjumlah 10 orang. Evaluasi menunjukkan 70% anggota kelompok ternak mampu mengoperasikan reaktor dengan baik, sementara 30% masih kesulitan dalam pemeliharaan. Pemahaman masyarakat terhadap manfaat biogas meningkat sebesar 80%, namun 40% masih kesulitan dalam pengoperasian dan perawatan reaktor. Program ini memberikan manfaat ekonomi, dengan efisiensi energi dan penggunaan pupuk organik, namun memerlukan pelatihan berkelanjutan dan peningkatan kapasitas reaktor untuk mendukung keberlanjutan.Abstract: Tanah Wulan Village faces the issue of accumulated cow manure that pollutes the environment and poses health risks. The aim of this community service project is to empower the community by enhancing their technical skills (hardskill) in operating and maintaining the Biomass Digester Reactor (BDR) technology, as well as increasing their understanding of the benefits of biogas. Additionally, this project aims to strengthen the community's soft skills in collaborating on the collection and distribution of cow manure through the formation of workgroups at the RT (neighborhood) or dusun (village) level. The activity involves 6 students from the University of Jember and local residents, with the Livestock Group and Village Government as partners. Evaluation shows that 70% of livestock group members can operate the reactor well, while 30% still face challenges in maintenance. The community's understanding of biogas benefits increased by 80%, but 40% still struggle with operation and maintenance. The program provides economic benefits through energy efficiency and organic fertilizer use, but requires ongoing training and reactor capacity improvements for sustainability.
Pembuatan biogas dari jerami padi dan kotoran sapi di Desa Sumber Jeruk Kecamatan Kalisat Ditta Kharisma Yolanda Putri; Boy Arief Fachri; Zuhriah Mumtazah; Istiqomah Rahmawati; Ansori Ansori; Ratri Sekaringgalih; Merymistika Yufrani Afred; Ocita Galuh Permatasari; Anak Agung Nabilla Azzahrah; Hilda Huril Ainia; Nayyara Aida Buana; Nirina Indi Naraismanti; Putri Ayu Salsabila; Gavinda Tsubutul Akmal; Muhammad Nabil Suryagama; Ilyas Arya Pratama; Dwi Intan Noer Aini
SELAPARANG: Jurnal Pengabdian Masyarakat Berkemajuan Vol 9, No 3 (2025): May
Publisher : Universitas Muhammadiyah Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31764/jpmb.v9i3.30268

Abstract

AbstrakKrisis energi akibat kelangkaan minyak mentah telah menyebabkan kenaikan harga bahan bakar minyak dan gas secara signifikan. Untuk menanggulangi dampak tersebut, pemerintah memberikan subsidi LPG kepada masyarakat berpenghasilan rendah. Namun, realisasinya masih kurang efektif karena tidak tepat sasaran, sehingga menyebabkan keterbatasan ketersediaan LPG bersubsidi. Di sisi lain, limbah biomassa seperti jerami padi dan kotoran sapi yang melimpah di wilayah pedesaan belum dimanfaatkan secara optimal, padahal memiliki potensi besar sebagai sumber energi terbarukan.Kegiatan pengabdian ini dilakukan di Desa Sumber Jeruk, Kabupaten Jember, dengan tujuan memberikan solusi pemanfaatan limbah biomassa menjadi energi alternatif berupa biogas, sekaligus sebagai upaya mengurangi ketergantungan terhadap LPG. Metode yang digunakan dalam produksi biogas adalah fermentasi fed-batch dengan penambahan EM4 sebagai aktivator mikroorganisme.Hasil kegiatan menunjukkan bahwa kombinasi jerami padi dan kotoran sapi mampu menghasilkan biogas yang dapat dimanfaatkan sebagai bahan bakar alternatif. Selain membantu mengurangi limbah organik, inovasi ini juga berkontribusi dalam mendukung ketahanan energi di tingkat rumah tangga. Pengolahan limbah biomassa menjadi biogas merupakan solusi tepat guna yang ramah lingkungan dan berkelanjutan dalam menghadapi keterbatasan energi fosil. Kata kunci: biogas; LPG; limbah jerami padi; kotoran sapi; fermentasi fed-batch. AbstractThe energy crisis due to the scarcity of crude oil has caused a significant increase in the price of fuel oil and gas. To overcome this impact, the government provides LPG subsidies to people with low incomes. However, its realization is still ineffective because it is not on target, resulting in limited availability of subsidized LPG. On the other hand, biomass waste such as rice straw and cow dung which are abundant in rural areas have not been optimally utilized, even though they have great potential as renewable energy sources. This community service activity was carried out in Sumber Jeruk Village, Jember Regency, with the aim of providing a solution for utilizing biomass waste into alternative energy in the form of biogas, as well as an effort to reduce dependence on LPG. The method used in biogas production is fed-batch fermentation with the addition of EM4 as a microorganism activator. The results of the activity show that the combination of rice straw and cow dung is able to produce biogas that can be used as an alternative fuel. In addition to helping reduce organic waste, this innovation also contributes to supporting energy security at the household level. Processing biomass waste into biogas is an appropriate solution that is environmentally friendly and sustainable in overcoming the shortage of fossil fuel energy. Keywords: biogas; LPG; rice straw waste; cow manure; fed-batch fermentation
Co-Authors Abdul Malik Karim Amrullah Abi, Moch Irgi Fadhilal Adelina, Saltsabita Nourin Adrian, Febri Afwal, Diza Raudhatul Ahmad Syuhri Akbar Anugrah Ikhsani Al Fajri, Maktum Muharja Alex Ttesa Elsyamba Alfinaini, Nur Aini Dwi Alfinaini Alifia Rahma Putri Neysella Amalia Ramadhan Anak Agung Nabilla Azzahrah Anggraini, Ranita Anggi Annisa, Yasmin ansori ansori Ansori Ansori Ardila Dwi Tresna Ari Susanti Arief Budiman Aris Zainul Muttaqin Asshofy , Muhammad Agil Atiqa Rahmawati Atiqa Rahmawati Azizi, Daffa Hafiziaulhaq Badril Azhar Badril Azhar Bekti Palupi Bimo Bayu Aji Budiarti, Lutfia Pradisha Danang Muharyanto Dianavita Fatimah Digdo Listyadi, Digdo Dihayat, Icha Shofia Dini Rahmawaty Ditta Kharisma Yolanda Ditta Kharisma Yolanda Putri Doddy Parningotan Dwi Intan Noer Aini Elida Novita Elisah, Nor Elsyamba, Alex Ttesa Endar Hidayat Erna Subroto Farwah, Zilma Aliyah Fatimah, Dianavita Felix Arie Setiawan Firmansyah, Muhammad Sahrul Gavinda Tsubutul Akmal 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 Hilda Huril Ainia Husnul Khotimah I Made Arimbawa Ilyas Arya Pratama Indrayani, Lilin Intan Hardiatama Ismail, Abdul Fatah Istiqomah Rahmawati Istiqomah Rahmawati Kristianta, Franciscus Xaverius Labibah, Jovita Lailatul Fatma Lestari, Afrila Tutut Dwijati Lilis Nurhasanah Lukman Nulhakim Lumbantoruan, Sri Lestari Luthfiana, Zakia M Edoward Ramadhan M Nurkoyim Kustanto M Yuda Pratama Maharani, Regita Gustiayu Pramisti Mahfud Mahfud Mahfud Mahfud Mahros Darsin Maktum Muharja Maulida Septiyana Megasari, Tri Elok Setya Merymistika Yufrani Afred Meta Fitri Rizkiana Mizanurafi’ Ghifarhadi Prasiefa Mochamad Edoward Ramadhan Mochamad Ghaza Al Ghifari Mohammad Nor Muhammad Nabil Suryagama Muhammad Reza Muhammad Reza Muhammad Rizky Kurniawan Muharja, Maktum Mukhammad Fauzi Nabilah Lu’aili Fauziah Nadia Ayumna Fa’iqoh Naily Fatimatuz Zaroh Nanda Ayudiyah Andriani Nayyara Aida Buana Nida Ayu Salsabila Nikita Meidi Nirina Indi Naraismanti Nova Chintya Kurniawati Nova Chintya Kurniawati Nugraha, Briantara Agung Nugroho, Yeremia Prasetya Nur Karima Nur Karima Nurkoyim Kustanto Nurtsulutsiyah Nurtsulutsiyah Nurtsulutsiyah Nurtsulutsiyah Nurtsulutsiyah, Nurtsulutsiyah Ocita Galuh Permatasari Permana, Rafly Surya Pradipta, Shima Nuril Pratamai Shelli Pravitasiwi, Nanda Tricya Julia Purimahua, Amanda Augre Maharani Puspita Sari Putri Ayu Salsabila Putri, Ditta Putri, Navisa Ayudia Putri, Salsabila Ananda R Rochmadi Rahman, Agus Ramadana, Ifan Ratnasonia, Samantha Githa Ratri Sekaringgalih Regita Gustiayu Pramisti Maharani Rekfa Wika Amini Renald Rochman Mauludy Reswara Musyafa Richa Febyola Surya Putri Rizalluddin, Muhammad Rizki Abdus Syatar Rizki Fitria Darmayanti Rizki Fitria Darmayanti Rizky Pratama, Reinaldi Rumaisha-Zuhriansyah, Rayya Safira Nur Oktavia Santoso Mulyadi Sa’roni, Achmad Sella Violina Anggraeni Septianti, Kiki Shabrina, Nadhilah Sholeha, Irdatus Slamet Pujianto 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 Wibowo, Jihan Nafila Wiwik Pratiwi Yakub Hendrikson Manurung Yukti Nurani Zikrillah, M Zuhriah Mumtazah