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All Journal Teknika Jurnal Bahan Alam Terbarukan CHEMICA Jurnal Teknik Kimia Jurnal Dinamika Penelitian Industri Jurnal Teknologi Agroindustri Journal Of Chemical Process Engineering (JCPE) JURNAL KONVERSI Jurnal Distilasi Jurnal Redoks Martabe : Jurnal Pengabdian Kepada Masyarakat PengabdianMu: Jurnal Ilmiah Pengabdian kepada Masyarakat Journal of Engineering and Scientific Research (JESR) Jurnal Tekno Jurnal Riset Teknologi Industri PUBLIKASI PENELITIAN TERAPAN DAN KEBIJAKAN Majalah Tegi International Journal Of Science, Technology & Management (IJSTM) Aptekmas : Jurnal Pengabdian Kepada Masyarakat Journal Of Chemical Process Engineering International Journal of Information Engineering and Science Advance Sustainable Science, Engineering and Technology (ASSET)
Kiagus Ahmad Roni
Universitas Muhammadiyah Palembang
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Pembuatan Biodiesel dari Biji Karet dengan Proses Alkoholisis sebagai Alternatif Sumber Bahan Bakar Ekonomis Roni, Kiagus Ahmad; Martini, Sri
Journal of Chemical Process Engineering Vol. 6 No. 2 (2021): Journal of Chemical Process Engineering
Publisher : Fakultas Teknologi Industri - Universitas Muslim Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33536/jcpe.v6i2.815

Abstract

Penggunaan bahan bakar minyak yang semakin hari semakin meningkat, seiringnya semakin berkembangnya industrialisasi dan juga masyarakat yang menggunakan kendaraan semakin banyak jumlahnya. Jika ditinjau dari sumber BBM fosil yang semakin menipis, merupakan tantangan untuk mencari sumber energy terbaharukan. Salah satunya yaitu, pembuatan biodiesel dengan menggunakan minyak nabati sebagai bahan baku. Dan disini menggunakan biji karet sebagai bahan baku biodiesel dengan proses alkoholisis. Pembuatan biodiesel menggunakan NaOH sebagai katalis. Salah satu tujuan dari penelitian ini, agar diperoleh komposisi baik bahan atau kondisi operasi yang optimal. Proses alkoholisis diterapkan pada seperangkat alkoholisis dengan labu leher tiga yang dilengkapi oleh kondensor, agitator, serta thermometer. Setiap sepuluh menit cuplikan diambil kemudian dianalisa sehingga diketahui kinetika serta konversi reaksi yang terjadi. Pada penelitian ini diperoleh kondisi optimal berada pada temperature operasi 110oC, rasio minyak dan etanol 5:1, kadar katalis sebanyak 2%, dengan waktu operasi 50 menit, dan kecepatan pengadukan sebesar 200rpm. Dengan kondisi ini diperoleh konversi sebesar 89,04%.
Changes in the Physical and Mechanical Properties of Clay Soil Due to Stabilization with Lime Ferly Indra Putra; Kiagus Ahmad Roni; Sri Martini
International Journal of Information Engineering and Science Vol. 2 No. 2 (2025): May : International Journal of Information Engineering and Science
Publisher : Asosiasi Riset Teknik Elektro dan Infomatika Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62951/ijies.v2i2.295

Abstract

Clay soil stabilization is a crucial process to enhance the soil's bearing capacity and stability, making it more suitable for construction purposes. Stabilizing clay soils improves their mechanical properties, reduces swelling, and increases their load-bearing capacity, which is essential for the foundation of various structures. This study aims to investigate the effect of lime (CaO) addition and curing time on the physical properties of clay soil, particularly focusing on unconfined compressive strength (qu) and overall soil stability. The experimental methodology involved applying different percentages of lime content (ranging from 3% to 7%) and varying curing times (7, 14, and 28 days). The soil samples were tested for their unconfined compressive strength after each combination of lime content and curing duration. The results indicated that the addition of 5% lime (CaO) and curing for 14 days led to a significant improvement in the unconfined compressive strength by 153.3%, compared to the untreated clay soil. Furthermore, increasing the curing time beyond 14 days did not show substantial improvements in strength, suggesting that 14 days is the optimal curing period for this combination. The study also highlighted that the lime treatment not only enhanced the mechanical properties but also reduced the plasticity of the clay, making it more stable and easier to handle during construction. Based on these findings, it can be concluded that the appropriate combination of lime content and curing time plays a significant role in improving the stability of clay soils. This research provides valuable insights into optimizing soil stabilization techniques, offering an effective solution for enhancing soil properties for engineering applications
Sosialisasi dan Pendampingan Solar PV Rooftop sebagai Sumber Energi Listrik Cadangan di Musholah Baiturrohim Kelurahan Plaju Darat Kecamatan Plaju Kota Palembang: Socialization and Mentoring of Solar PV Rooftop as a Backup Source of Electricity in Baiturrohim Musholah Plaju Darat Village, Plaju District, Palembang City Roni, Kiagus Ahmad; Sofiah, Sofiah; Afif, Muhammad Faris; Puteri, Delita Mustika; Fadilah, Fadilah
PengabdianMu: Jurnal Ilmiah Pengabdian kepada Masyarakat Vol. 10 No. 11 (2025): PengabdianMu: Jurnal Ilmiah Pengabdian kepada Masyarakat
Publisher : Institute for Research and Community Services Universitas Muhammadiyah Palangkaraya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33084/pengabdianmu.v10i11.9846

Abstract

Solar photovoltaic (PV) technology, which converts sunlight into electrical energy, is an environmentally friendly applied technology. PV installation on the roof of a building, also known as Rooftop PV, is used not only as a heater but also as an alternative source of electrical energy for a building. Rooftop PV on the Mushola Baiturrohim is used as a backup source of electrical energy when PLN cannot supply voltage. The installed 100 Wp solar photovoltaic system is capable of providing power to a setup consisting of 3 lamps, each with a wattage of 15, and a fan with a diameter of 12 inches, for approximately 2.5 hours. Socialization of the assembly and maintenance of the Rooftop PV system is also carried out for the management of the prayer room and the surrounding community, as a means of transferring renewable energy knowledge that all can utilize.
Making Virgin Coconut Oil (VCO) With Enzymatic Method Using Pineapple Hump Extract Roni, Kiagus Ahmad; Rifdah, Rifdah; Melani, Ani; Amina Reformis I, Aisyah; Sri, Sri Martini
International Journal of Science, Technology & Management Vol. 3 No. 3 (2022): May 2022
Publisher : Publisher Cv. Inara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46729/ijstm.v3i3.516

Abstract

Indonesia is one of the largest coconut producer countries providing a higher opportunity for producing various products derived from coconut fruit including virgin coconut oil (VCO). The enzymatic method can be chosen as part of VCO production as it offers higher yields. This work then utilized the bromelain enzyme which could hydrolyze protein leading to better oil-water separation in the coconut milk emulsion. Around 200 ml of coconut milk and several variables such as incubation time (24 hours, 36 hours, 48 ??hours, 60 hours), and the concentration of pineapple hump extract (5%, 10%, 15%, and 20%) were chosen as investigated parameters in this work. The experimental procedure for VCO production followed Indonesia national standard (SNI 7381: 2008). It was found that the incubation time of 24 hr and the concentration of pineapple hump extract 5% as the optimum condition. These parameters resulted in VCO product having specific gravity 0.9150 gr/cm3, free fatty acids 0.133%, and the acid number 1.8 meq/kg which has met Indonesia quality standard for VCO production.
APLIKASI WHATSAPP SEBAGAI MEDIA ALTERNATIF UJIAN ONLINE DI SIT MUSH’AB BIN UMAIR Barlian, Taufik; Roni, Kiagus Ahmad; Sofiah, Sofiah; Apriani, Yosi
Martabe : Jurnal Pengabdian Kepada Masyarakat Vol 4, No 1 (2021): Martabe : Jurnal Pengabdian Kepada Masyarakat
Publisher : Universitas Muhammadiyah Tapanuli Selatan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31604/jpm.v4i1.268-273

Abstract

Distance learning causes teachers to think creatively so that the teaching and learning process continues as it should. In addition, various platforms and media for online learning are still not widely known by teachers. The Whatsapp application is an application that is already widely used. In this application, it is possible to form groups that can gather many people to be able to chat with each other and exchange information that allows the delivery of messages in groups besides delivering messages individually. The purpose of this service is so that teachers can make maximum use of the Whatsapp media as a distance learning facility. The method in this service of AbdiMas team took the initiative to conduct a one day coaching clinic using the Whatsapp application as a means of evaluating student learning to SIT Mush'ab bin Umair teachers. The conclusion of this dedication activity is that this community service activity is felt to be very beneficial for the SIT Mush'ab bin Umair teachers. In part, the limitations of online learning facilities and infrastructure can be overcome by using Whatsapp. The use of Whatsapp as an online exam means is considered relatively cheap with a wide reach, easy to use, especially for most of the students of SIT Mush'ab bin Umair who are still in grades 1 and 2.
SISTEM PENJERNIH AIR METODE AERASI DI KELURAHAN PLAJU DARAT PALEMBANG Netty Herawaty; Kgs. A Roni; Erna Yuliwati; Mardwita Mardwita; Husnul Khotimah
Martabe : Jurnal Pengabdian Kepada Masyarakat Vol 6, No 12 (2023): Martabe : Jurnal Pengabdian Kepada Masyarakat
Publisher : Universitas Muhammadiyah Tapanuli Selatan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31604/jpm.v6i12.4396-4401

Abstract

Plaju Darat merupakan kelurahan terujung dari Kota Palembang yang berbatasan dengan Kabupaten Banyuasin dengan luas daerah 18,50 Ha. Kontur lahan di kelurahan ini berupa tanah rawa dimana 70% dari luas lahan digunakan untuk pertanian rawa dan sisanya untuk pemukiman. Dengan kondisi lahan yang berupa dataran rendah rawa, memunculkan persoalan tersendiri terkait ketersediaan air bersih. Aliran air bersih dari PDAM Tirta Musi memang telah menjangkau daerah ini, namun belum mencukupi kebutuhan masyarakat. Karenanya masih banyak masyarakat yang menggunakan air sumur untuk keperluan sehari-hari. Ketersediaan air bersih yang belum mencukupi meskipun layanan PDAM telah menjangkau daerah ini sehingga masyarakat masih menggunakan air sumur. Dari permasalahan diatas tim Pengabdian Kepada Masyarakat (PKM) Prodi Teknik Kimia Universitas Muhammadiyah palembang melakukan instalasi penjernih air dengan metode aerasi di salah satu pusat ibadah Kelurahan Plaju Darat yaitu masjid Sirajul Munir Sirajul Munir. Metode yang di terapkan dalam pengabdian dimulai dari 1). analisis situasi kelurahan, 2) merancang sistem instalasi penjernih air, 3) menginstalasi sistem penjernih air, 4) pengujian sistem penjernih air, 5) evaluasi hasil pengabdian. Hasil yang di capai berupa tersedianya sistem  penjernih air beserta peralatan pendukungnya guna menjamin keberlangsungan tersedianya air bersih untuk tempat ibadah masjid Sirajul Munir.
Barium Removal from Produced Water Using RCC-Based Ceramic Adsorbent: Fixed-Bed Column Adsorption Netty Herawati; Subriyer Nasir; Kiagus Ahmad Roni; Muhammad Arif Karim
Advance Sustainable Science Engineering and Technology Vol. 7 No. 4 (2025): August-October
Publisher : Science and Technology Research Centre Universitas PGRI Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26877/asset.v7i4.2399

Abstract

This study focuses on the removal of barium ions (Ba²⁺) from produced water, a common challenge in industrial wastewater treatment due to barium’s toxicity and scaling potential. To address this, the research introduces a novel ceramic composite adsorbent formulated from natural clay and residue catalytic cracking (RCC) spent catalyst, combining low cost, sustainability, and enhanced adsorption performance. The main objective is to evaluate the adsorption efficiency of this composite in a fixed-bed column system under varying operational conditions, while also modeling its dynamic behavior. Produced water with an initial barium concentration of 0.58 mg/L (pH 8.8) was fed in up-flow mode at flow rates of 6, 7, and 8 mL/min using a peristaltic pump. Effluent samples collected over 180 minutes were analyzed by UV- Vis. spectrophotometry. Results showed that lower flow rates increased contact time and improved adsorption efficiency, with breakthrough delayed to ~210 minutes at 6 mL/min compared to 160 minutes at 8 mL/min. Breakthrough modeling indicated that the Thomas model best represented the data (R² ≥ 0.95), while the Yoon–Nelson model reliably predicted 50% breakthrough time. This work demonstrates that clay–RCC ceramic composites are effective, low-cost, and sustainable adsorbents.
Pengaruh Waktu pada Modifikasi Photovoltaic Tray Dryer untuk Pengeringan Daun Kelor (Moringa Oleifera) Muhammad Delika Maulidi; Kiagus Ahmad Roni
TEKNIKA Vol. 19 No. 3 (2025): Teknika September 2025
Publisher : Politeknik Negeri Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5281/zenodo.16312516

Abstract

Tanaman daun kelor (Moringa oleifera) dikenal sebagai tumbuhan yang sangat banyak manfaatnya. Salah satu kegunaannya adalah pada daunnya, yang mengandung lebih banyak nutrisi setelah dikeringkan. Dengan pertimbangan tersebut, dirancanglah sebuah alat pengering yang memanfaatkan energi surya, yaitu Photovoltaic Tray Dryer. Alat ini memiliki kapasitas dua tray, dengan masing-masing tray berisi 100 gram daun kelor. Proses dilakukan pada berbagai waktu yaitu 60, 120, 180, 240 menit, dalam durasi total 4 jam pada suhu 80℃. Setiap 1 jam, untuk mengetahui massanya daun kelor pada tray 1 dan 2 dilakukan pengukuran. Setelah menjalani proses pengeringan, target kandungan air pada daun kelor adalah <10%. Hasilnya, kandungan air pada tray 1 suhu 80℃ selama 4 jam sebesar 13,64% dan tray 2 suhu 80℃ selama 4 jam sebesar 9,65%. Laju pengeringan cenderung menurun dari 0,144 kg/jam m² pada menit 60 menjadi 0,096 kg/jam m² pada menit 240.
Pembuatan Bioplastik dari Sekam Padi Menggunakan Sorbitol sebagai Plasticizer Dimas Tirtayasa Rachman Hakim; Kiagus Ahmad Roni
TEKNIKA Vol. 19 No. 3 (2025): Teknika September 2025
Publisher : Politeknik Negeri Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5281/zenodo.17042345

Abstract

Penelitian ini bertujuan untuk mengembangkan bioplastik biodegradable yang berbahan dasar sekam padi, dengan penambahan kitosan dan sorbitol sebagai bahan penguat dan plasticizer. Sekam padi mengandung selulosa yang dapat diekstraksi dan digunakan untuk pembuatan bioplastik yang ramah lingkungan. Proses pembuatan dimulai dengan ekstraksi selulosa dari sekam padi, dilanjutkan dengan pencampuran kitosan dan sorbitol dalam larutan asam asetat 2%. Bioplastik yang dihasilkan diuji untuk mengetahui sifat mekanik seperti kekuatan tarik (tensile strength), elongasi, dan daya serap air (swelling). Hasil penelitian menunjukkan bahwa penambahan kitosan meningkatkan kekuatan tarik bioplastik, sementara sorbitol meningkatkan kelenturan dan fleksibilitasnya. Formulasi optimal diperoleh pada konsentrasi 1,5 g kitosan dan 4,0 mL sorbitol, yang menghasilkan bioplastik dengan ketahanan terhadap air yang baik, kekuatan tarik yang memadai, dan elongasi yang cukup tinggi. Penelitian ini menunjukkan bahwa sekam padi dapat dijadikan bahan baku yang efektif untuk pembuatan bioplastik yang ramah lingkungan dan berkelanjutan.
Co-Authors afif, muhammad faris Amina Reformis I, Aisyah Ani Melani Apriani, Yosi Arief Prasetyo Bela Marselia Dian Kharisma Dewi Dimas Tirtayasa Rachman Hakim Eddy Hamid Elfidiah Erna Y uliwati Evy Kurniati Fadilah Fadilah, Fadilah Ferly Indra Putra Husnul Khotimah Indra Pratama Kharismadewi, Dian Legiso, Legiso Mardwita Miftahul Jannah, Deri Muhammad Arif Karim Muhammad Delika Maulidi Muhammad Roy Tri Handono Mustakim, Imam Mustika Puteri, Delita Netty Herawati Netty Herawati Netty Herawaty Panji Nugroho, Dimas Rahman, Arman Aulia Rahman, Arman Aulia Rifdah, Rifdah Rifdah, Rifdah RR. Ella Evrita Hestiandari Sofiah Sofiah Sofiah Sofiah Sofiah, Sofiah Sri Martini Sri Martini Sri Martini Sri, Sri Martini Subriyer Nasir Taufik Barlian Tri Amrullah Tri Susanto Tri Susanto Tri Susanto Tri Susanto Yudha Widaputra Yuliwati, Erna Zahrul Mufrodi, Zahrul