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All Journal AUSTENIT Jurnal Teknik Kimia USU Jurnal Pangan dan Agroindustri Jurnal Sumberdaya Alam dan Lingkungan IJFAC (Indonesian Journal of Fundamental and Applied Chemistry) Sriwijaya International Seminar on Energy-Environmental Science and Technology Indonesian Journal of Chemical Science Science and Technology Indonesia Journal Of Chemical Process Engineering (JCPE) JOURNAL OF INDUSTRIAL AND MANUFACTURE ENGINEERING Jurnal Serambi Engineering JURNAL PENDIDIKAN TAMBUSAI Jurnal Teknik Kimia Jurnal Inovasi Teknik Kimia Jurnal Daur Lingkungan ASEAN Journal of Chemical Engineering Kinetika Jurnal Teknik Industri Terintegrasi (JUTIN) Yumary: Jurnal Pengabdian kepada Masyarakat Jurnal Pendidikan dan Teknologi Indonesia Jurnal Ilmiah Wahana Pendidikan Jurnal Energi Baru dan Terbarukan AJARCDE (Asian Journal of Applied Research for Community Development and Empowerment) International Journal of Research in Vocational Studies (IJRVOCAS) Aptekmas : Jurnal Pengabdian Kepada Masyarakat Chemical Engineering Journal Storage (CEJS) Jurnal Teknik Kimia USU Journal of Applied Agricultural Science and Technology Innovative: Journal Of Social Science Research Journal Of Chemical Process Engineering Serambi Engineering Jurnal Rekayasa Proses
Muhammad Yerizam
Politeknik Negeri Sriwijaya
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Pemanfaatan Limbah Cangkang Telur dan Sekam Padi sebagai Katalis dalam Pembuaatan Biodiesel dari Minyak Jelantah Syafitri, Aulia; Mediniariasty, Anerasari; Yerizam, Muhammad
Jurnal Pendidikan dan Teknologi Indonesia Vol 4 No 1 (2024): JPTI - Januari 2024
Publisher : CV Infinite Corporation

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52436/1.jpti.368

Abstract

Sintesa biodiesel selama ini lebih banyak menggunakan katalis homogen berupa NaOH atau KOH. Penggunaan katalis homogen dalam pembuatan biodiesel memiliki beberapa kelemahan, diantaranya terbentuknya produk samping berupa sabun dan pemisahan produk biodiesel dengan katalis cukup sulit. Untuk mengatasi kelemahan tersebut, mulai dikembangkan penggunaan katalis heterogen (padat) untuk menggantikan katalis homogen (basa). Pembuatan katalis heterogen dapat dibuat dengan bahan yang ramah lingkungan dan relatif murah yakni limbah cangkang telur dan sekam padi yang menghasilkan katalis CaO/SiO2 melalui proses impregnasi. Penelitian ini memvariasikan rasio CaO/SiO2 (5:3, 5:5, dan 5,7) b/b serta waktu impregnasi (22, 23, dan 24) jam. Katalis terbaik dilihat dari yield dan mutu biodiesel yang dihasilkan. Hasil penelitian didapatkan hasil yield terbaik adalah 71,54% pada rasio 5:7 dengan waktu impregnasi 24 jam. Analisis GC dilakukan untuk mengetahui mutu biodiesel dan hasil yang di dapatkan sebesar 8,25%.
Pemanfaatan Fly Ash Batubara dalam Penurunan Kadar Besi dan Mangan Limbah Air Asam Tambang PT Bukit Asam Sari, Rahmaida; Yerizam, Muhammad; Junaidi, Robert
Innovative: Journal Of Social Science Research Vol. 4 No. 5 (2024): Innovative: Journal Of Social Science Research
Publisher : Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/innovative.v4i5.13362

Abstract

PT Bukit Asam Tbk is one of the largest coal producers in Indonesia. Fly ash, the primary waste from the operations of PLTU Bukit Asam, is a fine particle residue from coal combustion that can cause environmental pollution if not properly managed. Based on Government Regulation No. 22 of 2021, fly ash is no longer categorized as hazardous waste (B3), leading to increased research on its utilization. This study aims to utilize fly ash from PLTU Bukit Asam as an adsorbent to reduce iron (Fe) and manganese (Mn) content from acid mine drainage at PT Bukit Asam Tbk, using NaOH as a basic activator and varying contact time and adsorbent mass. Characterization of the fly ash morphology using Scanning Electron Microscopy (SEM) showed that activated fly ash has a more porous structure compared to before activation, increasing the specific surface area and adsorption potential. The study results indicated that the adsorption efficiency of Fe increased with the increasing adsorbent dose, reaching the highest efficiency of 99.95% at a dose of 500 grams and a contact time of 50 minutes. The Langmuir and Freundlich isotherm models were used to describe the adsorption process. The high determination coefficient (R²) values, ranging from 0.9474 to 0.9916 for Fe and 0.99602 to 0.99862 for Mn, indicate the suitability of these models in the studied adsorption system.
Pemanfaatan Bottom Ash Batubara Menjadi Silika Gel Sebagai Absorben Pb+ pada Limbah Industri Minuman di Bayuasin Nurjanah, Rizki; Zamhari, Mustain; Yerizam, Muhammad
Innovative: Journal Of Social Science Research Vol. 4 No. 5 (2024): Innovative: Journal Of Social Science Research
Publisher : Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/innovative.v4i5.13628

Abstract

Improving the quality of life and welfare through industrial development in various sectors often results in negative impacts such as production waste. One type of waste produced from coal combustion is fly ash and bottom ash, both of which were categorized as hazardous waste (B3) according to government regulations before 2021. With regulatory changes in 2021, this waste can be utilized more flexibly after obtaining Environmental Approval. This study examines the use of bottom ash as an adsorbent to reduce heavy metals in industrial wastewater. Bottom ash from PT PUSRI Palembang was processed into silica gel using the sol-gel method and NaOH activation, with the liquid waste used coming from the liquid waste of the beverage industry in Banyuasin. The results showed that silica gel successfully made from bottom ash has an adsorption capacity following the Langmuir model, with a value of 1.743 mg/g and an adsorption efficiency of 73.69%. The optimal NaOH concentration was found at a 3 M ratio with an average efficiency of 70.84%.
Pengembangan Packed Flow Reactor Tipe Fixed Bed untuk Meningkatkan Efisiensi Metanasi CO₂ Menggunakan Katalis Nikel Apriyansah, Apriyansah; Yerizam, Muhammad; Hasan, Abu
Innovative: Journal Of Social Science Research Vol. 4 No. 5 (2024): Innovative: Journal Of Social Science Research
Publisher : Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/innovative.v4i5.13629

Abstract

The increase in carbon dioxide (CO₂) emissions due to human activities poses a significant challenge to climate change. CO₂ methanation, the process of converting CO₂ into methane (CH₄), offers a potential solution for reducing carbon footprints and producing useful fuel. This study focuses on developing a fixed bed packed flow reactor made of stainless steel, with a capacity of ±2 liters, to enhance CO₂ methanation efficiency. Nickel (Ni) catalysts were selected due to their relatively low cost and good performance. Experiments were conducted at temperatures up to 400°C to optimize CH₄ production. The results show that higher temperatures increase methane production, with an optimal temperature of 100°C resulting in 39.41% CH₄. Lower CO₂ flow rates also increase CH₄ production due to longer contact times. Higher temperatures reduce residual CO₂, and the amount of active sites on the catalyst affects the reduction of residual CO₂.
Life Cycle Assessment of Production Bio-oil from Thermal Cracking Empty Fruit Bunch (EFB) Wulandari, Daya; Rusdianasari, Rusdianasari; Yerizam, Muhammad
AJARCDE (Asian Journal of Applied Research for Community Development and Empowerment) Vol. 6 No. 3 (2022)
Publisher : Asia Pacific Network for Sustainable Agriculture, Food and Energy (SAFE-Network)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29165/ajarcde.v6i3.118

Abstract

Empty fruit bunch (EFB) is one of the abundant biomass waste from oil palm and it is an issue that it can be used as renewable energy in the form of Bio-oil. Bio-oil is produced by a thermal cracking process. This research aims to identify the potential environmental impact of Bio-oil production from EFB as fuel. Life Cycle Assessment (LCA) with gate to gate approach is used in data processing applications for networks in Simapro V.9 and the database used is similar to the characteristics of the eco invent database. Functional units are used to show environmental references in impact categories, such as energy used and global warming potency. The results show that the stage of the bio-oil production cycle in the pretreatment process has a greater global warming impact than the others, amounting to 131.10013 kg CO2 eq. The results of the analysis using the networking graph on the Simapri, show that the environmental hotspot of the thermal cracking process for Bio-oil production is caused by the use of electricity from the State Electricity Company (PLN) and the release of chemical substances from the process. From the results of the LCA, environmental performance improvement or continuous improvement can be done is by managing energy use and installing equipment.
Produksi Bioetanol Berbahan Ampas Tebu Dan Sabut Kelapa Dengan Proses Fermentasi - Distilasi Ardiani, Salsha; Yerizam, Muhammad; Yuliati, Selastia
Jurnal Ilmiah Wahana Pendidikan Vol 10 No 7 (2024): Jurnal Ilmiah Wahana Pendidikan
Publisher : Peneliti.net

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5281/zenodo.11221537

Abstract

The high demand for fuel in Indonesia is currently the main crisis for the lack of fuel oil (BBM). So that alternative energy plays an important role in overcoming bad situations like today, by utilizing waste from abundant natural resources through this research it can create bioethanol as an alternative energy made from bagasse and coconut coir. In the process of making bioethanol using fermentation and distillation methods through various processes such as lignification and hydrolysis to increase the glucose content so that the two materials can be fermented and produce good bioethanol. Sugarcane bagasse and coconut coir are fermented using yeast with urea substituted as yeast nutrition in the bioethanol fermentation process, where urea is used with variations of 1gr, 1.5gr, 2gr, 2.5gr, and 3gr. After the urea variation samples were analyzed from this study for the bioethanol content, the sample which had the highest bioethanol content based on the urea variation produced a bioethanol content of 25.1% with 2gr yeast and 3g urea, the optimal fermentation time was 5 days, with a refractive index obtained 1, 3522
PERFORMANCE ANALYSIS OF BIO-BRIQUETTING MACHINE WITH SCREW EXTRUDER TYPE BASED ON QUALITY OF BIO-BRIQUETTES Puspa, Dilia; Yerizam, Muhammad; Zamheri, Ahmad; Wardhana, Agum Try
AUSTENIT Vol. 15 No. 2 (2023): AUSTENIT: October 2023
Publisher : Politeknik Negeri Sriwijaya, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53893/austenit.v15i2.7218

Abstract

he purpose of this study is to design a bio-briquetting machine with screw extruder type to convert biomass into higher density based on quality standard of charcoal briquette SNI 01-6235-2000 and SNI 19-4791-1998. The machine had production capacity of 30 kg/hour, equipped with the motor of 1 HP which transmitted to the machine through pulley and belt, and also has cutter which rotates continuously. The raw materials of the bio-briquette were using bagasse and coconut shells. There are 6 parameters that are used to test the quality of bio-briquette such as calorific value, inherent moisture, ash content, dependability pressure, volatile matter content, and fixed carbon content. The bio-briquette was made from the raw materials using amylum adhesives with ratio 30:70:30. With feed as 5 kg, the machine produced 50 pieces of bio-briquette. The machine could produce good bio-briquettes such as calorific value of 6,511.3 cal/g, inherent moisture of 1.97%, ash content of 5.88%, volatile matter of 27.71%, fixed carbon content of 64.99% and compressive strength was 16.98 kg/cm2.
Co-Authors Abu Hasan Abu Hasan Abu Hasan Achmad Reza Aditya Amin Agus Manggala Agustin Pratiwi, Ines Aida Syarif AIDA SYARIF Akbar Ismi Aziz Pramito Alfajri, Ahmad Rizki Aliyah Montessa Alsarah, Danil Son Amin, Achmad Reza Aditya Anerasari Meidinariasty Anerasari Meidinariasty Anerasari Meidinariasty Anggi Dwi Chandrika Apriansyah Zulatama Aprilia, Luraselly Arda Apriyansah Apriyansah, Apriyansah Ardiani, Salsha Aria Yopianita Arif Budiman Asyeni Miftahul Jannah Asyeni Miftahul Jannah Ayuni Lestari Azaria Hikmah Fajrianti Az’zahrah, Nandyta Rizqi Cindi Ramayanti Dina Eka Pranata Dwi Nugroho, Afrian Eka Mulyana, Eka Ekawati, Linda Ellina Margaretty Endang Sri Rahadianti Erwana Dewi Erwin Erwin Fatahul Arifin, Fatahul Febri Liani Br Simanjuntak Fenoldi, Nova Feri Hafidz, Abdurrahman Helen Chairunisa Ihtifazhuddin, Farhan Indah Purnamasari INDAH PURNAMASARI Indah Purnamasari Indrayani Indrayani Jabborov, Behzod Kalsum, Leila Khairunnisa, Annisa Septia Kusuma, Mutmainnah Ningtyas M, Anerasari M. Ridho Triadi M. Zaman Manggala, Agus Martha Aznury Martha Martha Mediniariasty, Anerasari Muhammad Yori Pratama Muhammad Zaman Mustain Zamhari Mustain Zamhari Nabila, Rizky Ayu Ningsih, Anis Wahyu Nurjanah, Rizki Nyayu Fia Atindu Nyayu Zubaidah Nyayu Zubaidah Pratama, Andrian Putra Pratama, Muhammad Yori Puspa, Dilia Putra, Rizkika Raysha Amelya Renny Citra Ramadhani Riansyah, Epan Robert Junaidi Robert Junaidi Rusdianasari Rusdianasari Rusdianasari Rusdianasari Rusdianasari Sabrina, Delanisa Saqila Putri Aulia Sari Rizky Amelia Sari, Rahmaida Sarmidi Sarmidi Selastia Yulianti Selastia Yuliati Silmi Tsabita Sirait, Agnes Tasya Pintauly Syafitri, Aulia Tamara, Ade Wan Qori Sri Maulani Wardhana, Agum Try Winnugroho Wiratman, Manfaluthy Hakim, Tiara Aninditha, Aru W. Sudoyo, Joedo Prihartono Yahya, Muhammad Habib Yohandri Bow Zain, Raina Khoirunisa Zamheri, Ahmad