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All Journal EKSAKTA: Journal of Sciences and Data Analysis Jurnal Sains Materi Indonesia Jurnal Bahan Alam Terbarukan Jurnal Sumberdaya Alam dan Lingkungan Journal of Applied Information, Communication and Technology (JAICT) Jurnal Penelitian Pendidikan IPA (JPPIPA) Civil Engineering Journal Indonesian Journal of Chemistry Jurnal Inovator Jurnal Ilmiah Mandala Education (JIME) Jurnal Teknik Kimia ASEAN Journal of Chemical Engineering Kinetika Jurnal Pendidikan dan Teknologi Indonesia Jurnal Pengabdian Masyarakat Indonesia AJARCDE (Asian Journal of Applied Research for Community Development and Empowerment) International Journal of Research in Vocational Studies (IJRVOCAS) Chemical Engineering Journal Storage (CEJS) Makara Journal of Science Makara Journal of Technology ENGAGEMENT: Jurnal Pengabdian Masyarakat Innovative: Journal Of Social Science Research Riwayat: Educational Journal of History and Humanities Serambi Engineering Jurnal Sains Materi Indonesia Jurnal Teknologi Riset Terapan
Abu Hasan
Chemical Engineering Department-State Polytechnic Of Sriwijaya Jl. Srijaya Negara Bukit Besar, Palembang 30139, Indonesia
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Design and Development of a Monitoring and Controlling System for Automatic Watering and Filling in Fungi House's Internet of Things-Based Mushroom Cultivation Supriyanto, Eko; Rochmatika, Rizkha Ajeng; Oktaviani, Cantika Cakhya; Luqita, Syauqi Fajar; Hasan, Abu; Bramantyo, Hutama Arif; Yudantoro, Tri Raharjo
JAICT Vol. 9 No. 2 (2024)
Publisher : Politeknik Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32497/jaict.v9i2.5921

Abstract

Temperature and humidity are aspects that need to be considered in cultivating oyster mushrooms. Previously, Fungi House in Genting Village, Semarang, implemented an automatic temperature, humidity, and watering monitoring system, but manually filled the water. This new system's design and development aim to simplify the monitoring and control of temperature, humidity, and water level for managers. Managers determined temperature, humidity, and water level thresholds via the web page. This system used the agile scrum method. The test results showed that the temperature measurement accuracy was 96.85%, humidity 99.35%, and water level 98.99%. With this system, the quality of baglog (mushroom growing medium) increased by 4.62%, while dead baglog decreased by 99.01%. Black box testing demonstrates that all features perform well in web testing. In the load activity test, with low bandwidth (6.71 Mbps), the average load time was 1.32 seconds, and with high bandwidth (37.15 Mbps), it was 0.878 seconds. These two conditions indicate excellent system performance and provide optimal user experience.
COMPARATION OF RUBBER MILLING PROCESS TO PRODUCE NATURAL RUBBER COUMPOUNDS USING MODIFIED AND UNMODIFIED LOCAL CLAY FILLER Abu Hasan; Martha Aznury; Indah Purnamasari; Muhammad Zaman; Robert Junaidi; Rahmaniar
Jurnal Sains Materi Indonesia Vol. 21 No. 2 (2020): Jurnal Sains dan Materi Indonesia
Publisher : BRIN Publishing (Penerbit BRIN)

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Abstract

COMPARISON OF RUBBER MILLING PROCESS TO PRODUCE NATURAL RUBBER COMPOUNDS USING MODIFIED AND UNMODIFIED LOCAL CLAY FILLER. Many researchers have studied the effect of modified clay as filler on rubber compounds for both natural rubber and synthetic rubber. Various chemicals are used as clay modifiers. In the rubber milling process, modified clay is directly used as filler after pretreatment with clay modifier. However, clay modifiers can also be milled together with original clay during the rubber mastication and milling process. Thus both of these methods certainly produce different physical properties, so the comparison of the two rubber milling processes is the focus of this research. The analysis of the curing characteristics and physical properties of vulcanized natural rubber was carried out with a rheometer and physical properties test units. Thermal analysis was carried out using TG/DTA and dispersion of filler on the rubber compound was analyzed by SEM. The results of the curing characteristic of the rubber compound and the physical properties of vulcanization showed that there was an effect due to the comparison of the rubber milling process. Modified clay using JH-S69 is better than JH-S69 milled with original clay and vice versa occurs in PEG 4000 which is used as clay modifier. PEG 4000 which is milled together with original clay produces curing characteristic and physical properties of vulcanization better than pretreatment of clay to be modified clay. This analysis is in line with the analysis using SEM.
Konversi CO2 Menjadi Metana Menggunakan Katalis Ni-Zn/Al2O3 Ditinjau dari Kemampuan Katalis dan Waktu Operasi Wijaya, Satria Agung; Junaidi, Robert; Hasan, Abu
Jurnal Serambi Engineering Vol. 10 No. 2 (2025): April 2025
Publisher : Faculty of Engineering, Universitas Serambi Mekkah

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Abstract

Carbon dioxide (CO2) gas is a gas that can be a threat to the environment because its emissions continue to increase from year to year. Therefore, this research aims to utilize CO2 gas and convert it to methane gas (CH4) using a fixed bed reactor type reactor containing a catalyst. In this study, the CO2 methanation process was carried out with the help of Ni/Al2O3 catalyst supported with Zn metal in situ. This study varies the catalyst treatment denoted by Ni_R0 - Ni_R4, with the amount of catalyst as much as 50 grams and variations in the operating time of the CO2 methanation process for 70 minutes and 80 minutes. The highest methane gas yield of 50.11% was obtained in sample 10 with the Ni_R4 catalyst treatment variation (Ni_R0 - Ni_R4 variation) for 80 minutes (70 minutes and 80 minutes variation). The longer the methanation process, the longer the contact process between CO2 gas and NaOH solution.
Pemanfaatan Abu Terbang (FLY ASH ) sebagai Bahan Penyerap (Adsorbent ) Amonia di Limbah Cair PT. Pupuk Sriwidjaja Palembang Albari, Mauris; Hasan, Abu; Mustain, Mustain
Innovative: Journal Of Social Science Research Vol. 5 No. 4 (2025): 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.v5i4.20362

Abstract

Ammonia is an inorganic compound that is widely used as a basic raw material for fertilizers, if the ammonia level exceeds the quality standard limit, it can cause irritation to the respiratory tract. In addition, if exposed to the environment, it can cause damage. The purpose of this study is to determine the Utilization of Fly Ash as an Ammonia Adsorbent in PT. Sriwidjaja Palembang Fertilizer. This research method is by conducting field observations. Field observation by directly observing the object being studied. The results of this study were obtained from the analysis that fly ash can reduce ammonia concentration by 59.46% from a concentration of 477.448 mg/L to 193.56 mg/L with a contact time of 60 minutes and an activator condensation of 0.5N
Analisis Digitalisasi pada Pelayanan Nasabah di Perbankan Syariah (Studi Kasus Bsi Kcp Probolinggo) Hasan, Abu; Ghafur, Abd.; Arifin, Moh Samsul
Riwayat: Educational Journal of History and Humanities Vol 8, No 3 (2025): July, Social Studies, Educational Research and Humanities Research.
Publisher : Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24815/jr.v8i3.48259

Abstract

Perkembangan teknologi digital telah mendorong transformasi layanan perbankan, termasuk di sektor perbankan syariah yang dituntut untuk tetap menjaga nilai-nilai syariah dalam penerapannya. Penelitian ini bertujuan untuk menganalisis implementasi digitalisasi layanan serta dampak positif dan negatifnya terhadap kualitas pelayanan nasabah di Bank Syariah Indonesia (BSI) Kantor Cabang Pembantu (KCP) Probolinggo. Metode yang digunakan adalah deskriptif kualitatif dengan teknik pengumpulan data berupa observasi, wawancara mendalam, dan studi dokumentasi. Hasil penelitian menunjukkan, pertama, bahwa implementasi digitalisasi melalui BSI Mobile, QRIS Syariah, dan layanan tarik tunai tanpa kartu telah meningkatkan efisiensi transaksi, memperluas akses layanan, serta mendorong kemandirian finansial nasabah. Kedua, digitalisasi juga membawa tantangan berupa kendala teknis, kesenjangan literasi digital pada kelompok lansia, dan kurangnya pemahaman terhadap akad syariah dalam fitur pembiayaan. Kesimpulannya, digitalisasi di BSI KCP Probolinggo berdampak positif terhadap kualitas pelayanan, namun memerlukan strategi edukatif dan sistem informasi syariah yang lebih inklusif.
Hybrid Passive Cooling System for Rooftop Photovoltaics with Varying Height Clearances Fauzi, Pebi Dian; Kusumanto, RD.; Hasan, Abu
International Journal of Research in Vocational Studies (IJRVOCAS) Vol. 5 No. 2 (2025): IJRVOCAS - August
Publisher : Yayasan Ghalih Pelopor Pendidikan (Ghalih Foundation)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53893/ijrvocas.v5i2.428

Abstract

The increasing adoption of rooftop photovoltaic (PV) systems as a renewable energy source is often hindered by the negative impact of high operating temperatures on their efficiency. To address this, a hybrid passive cooling system offers a promising solution to enhance the power output of PV panels while supporting environmental sustainability. This study investigates the effects of varying the height clearance between a PV panel and the roof surface on the thermal performance and energy efficiency of a hybrid passive cooling system. The research integrates a passive cooling setup, which utilizes natural airflow without additional energy consumption, with a thermoelectric generator (TEG) based on a Peltier module to convert waste heat into supplementary electrical energy. The study employed both simulation and experimental methods to analyze the thermal and energy performance of the system at different height configurations. Five identical 30W Maysun solar panels were tested at heights of 1 cm, 5 cm, 10 cm, 15 cm, and 20 cm, with data on temperature and voltage collected throughout the day. The results indicate that increasing the installation height significantly improves air circulation, leading to lower panel temperatures and higher voltage outputs. The optimal configuration was found to be at a height of 20 cm, which consistently yielded the highest voltage. Furthermore, the integration of a Peltier module with a heatsink proved effective, generating up to 623 mV of additional voltage by converting waste heat. These findings provide valuable insights and practical recommendations for designing more efficient rooftop PV installations, contributing to the advancement of sustainable building technologies and the global effort to reduce carbon emissions.
Pengaruh Konsentrasi KOH dan K2CO3 pada Pembuatan Elektrolit Bio-baterai dari Limbah Kulit Pusing Ambon (Musa Paradisiaca) Putri, Nabilah Ayunisa; Abu Hasan; Nugroho, Didiek Hari
Chemical Engineering Journal Storage (CEJS) Vol. 5 No. 4 (2025): Chemical Engineering Journal Storage (CEJS)-Agustus 2025
Publisher : LPPM Universitas Malikussaleh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29103/cejs.v5i4.23640

Abstract

Limbah kulit pisang merupakan sumber biomassa yang berpotensi dimanfaatkan sebagai bahan elektrolit ramah lingkungan dalam bio-baterai. Penelitian ini mengkaji pengaruh jenis dan konsentrasi pelarut KOH dan K2CO3 terhadap karakteristik elektrolit bio-baterai dari kulit pisang ambon (Musa paradisiaca). Metode yang digunakan bersifat eksperimental dengan variasi konsentrasi pelarut (0,5 M–2 M) dan massa kulit pisang (15 g dan 30 g). Parameter yang diamati meliputi tegangan, arus, daya listrik, pH, konduktivitas, kapasitas, korosi elektroda, serta uji aplikasi pada lampu LED dan mini fan. Hasil menunjukkan bahwa KOH 1 M dengan 30 g kulit pisang menghasilkan daya maksimum 14,52 mW dan kapasitas 172,53 mAh, meskipun dengan tingkat korosi elektroda yang tinggi. Sebaliknya, K2CO3 lebih stabil dan tidak terlalu korosif, namun daya listriknya lebih rendah. Uji aplikasi menunjukkan bio-baterai dapat menyalakan LED selama 3 jam 28 menit dan mini fan dengan kecepatan penuh. Dengan demikian, limbah kulit pisang berpotensi sebagai bahan elektrolit bio-baterai, dengan jenis dan konsentrasi pelarut sebagai faktor kunci optimasi kinerja dan ketahanan.
Synthesis and Characterization of Microcrystalline Cellulose (MCC) from Corn Waste (Zea Mays L.) Haliman, Annisa Cendani; Yuliati, Selastia; Hasan, Abu
Makara Journal of Science Vol. 29, No. 3
Publisher : UI Scholars Hub

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Abstract

Corn (Zea Mays L.) is one of the most widely cultivated food crops in the world, including in Indonesia. Corn plants produce waste, especially husks and cobs. Corn waste has no economic value and can lead to environmental pollution if burned. Corn husks contain approximately 44.08% cellulose, while cobs have a cellulose content of 45%. This high cellulose content makes it possible to process corn waste into microcrystalline cellulose (MCC). This study aims to investigate the effect of NaOH concentration and delignification time on the characteristics of the resulting MCC products. A mixture of corn husk and cob was treated with NaOH solutions of 5%, 10%, and 15% concentration, for delignification periods of 30, 60, 90, and 120 minutes, respectively. Furthermore, 10% H2O2 was used in the bleaching process to obtain alpha cellulose, followed by hydrolysis using HCl 2.5 N. Characterization of the MCC products was executed using X-ray diffraction (XRD) and scanning electron microscopy (SEM). The sample tests included organoleptic evaluations for shape, colour, and odour, as well as determination of the yield percentage, acidity, and moisture content. The crystallinity of the MCC obtained was satisfactory, while the SEM results indicated a pattern similar to Avicel pH 102. Increasing the concentration of NaOH resulted in smaller MCC particle sizes, facilitating dispersion during the acid hydrolysis. The NaOH concentration and delignification duration affected the yield percentage and surface contour, as observed in the SEM test, but the physical properties of the MCC were not affected by the concentration of NaOH. A concentration of 5% NaOH and a 90-minute delignification process yielded the highest crystallinity, at 99.4%, supported by a yield percentage of 77.09%, a pH of 5.84, a moisture content of 5.81%, and a particle size of 210.82 μm.
Utilization of Rotten Tomato Juice and Starfruit Juice with the Addition of Potassium Hydroxide in Biobattery Production Sardewi, Tri; Amanah, Tria Rizki; Rusdianasari, Rusdianasari; Junaidi, Robert; Hasan, Abu
AJARCDE (Asian Journal of Applied Research for Community Development and Empowerment) Vol. 9 No. 3 (2025)
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.v9i3.772

Abstract

Indonesia's dependence on fossil fuels underscores the need for the development of environmentally friendly alternative energy sources. This research examines the utilization of rotten tomato waste (Solanum lycopersicum) and starfruit (Averrhoa bilimbi L.) juice as natural electrolytes in the production of bio-batteries, with the addition of potassium hydroxide (KOH) to enhance their performance. Both materials contain organic acids such as citric acid and ascorbic acid, which support electrochemical reactions. The experimental variations included electrolyte solution volumes of 200–400 mL and KOH concentrations of 0.1 M, 1.0 M, and 2.0 M. The parameters tested included pH, conductivity, voltage, current, power, capacity, and the duration of the LED light, as specified in SNI IEC 60086-1:2015. The results show that for rotten tomato extract, the optimal combination of 350 mL with 2.0 M KOH yields the highest conductivity of 15.37 mS/cm and a capacity of 2.87 mAh. For starfruit juice, the optimal combination of 200–250 mL with 1.0 M KOH provides the highest capacity. The addition of KOH generally increases conductivity and power output, but high concentrations (2.0 M) in starfruit extract reduce efficiency due to over-ionization. This research proves that rotten tomato waste and starfruit juice with the addition of KOH have the potential to be efficient, inexpensive, and environmentally friendly bio-battery raw materials and support the utilization of organic waste as a renewable energy source. Contribution to Sustainable Development Goals (SDGs):SDG 7: Affordable and Clean EnergySDG 13: Climate Action
Effect of Waste Tire Rubber Particles on the Properties of Rubberized Concrete Hasan, Abu; Ahmed, Shameem; Ahsan, Raquib
Civil Engineering Journal Vol. 11 No. 8 (2025): August
Publisher : Salehan Institute of Higher Education

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.28991/CEJ-2025-011-08-021

Abstract

Millions of waste tires accumulate annually worldwide, posing environmental and public health challenges. Recycling these tires in concrete production presents a sustainable and practical solution. The present study was intended to investigate the effects of waste tire particles of varying sizes and shapes; specifically granular, short fiber, and mixed fine crumb rubber, along with coarse shredded rubber; on the characteristics of rubberized concrete. Fine rubber particles replaced sand, while shredded rubber replaced stone aggregates at 5%, 10%, and 15% substitution levels by weight. Results revealed that increasing rubber content reduced density, compressive strength, modulus of elasticity, and tensile strength. However, workability, Poisson’s ratio, ductility, and toughness improved significantly in comparison with conventional concrete. This study compares the effects of particle size and shape of rubber used in rubberized concrete. Notably, the newly introduced short fiber-type rubber particles exhibited superior mechanical properties compared to the granular and shredded rubber forms, revealing their potential for structural applications.
Co-Authors A.S, Putu Yoga Ahmed, Shameem Ahsan, Raquib Aida Syarif Albari, Mauris Ali Ahmad Alifiansyah, Muhammad Fikry Amanah, Tria Rizki Anerasari Meydinariasty Apriantoro, Roni Apriyansah Apriyansah, Apriyansah Arif Bramantyo, Hutama Arifin, Moh Samsul Arza, Tasya Dwi Putri Candra Aprizal Didiek Hari Nugroho Eko Supriyanto Erwana Dewi Fadarina HC Farhan, Ismy Fatahul Arifin, Fatahul Fauzi, Pebi Dian Ghafur, Abd. Haidi Tazaruddin Haliman, Annisa Cendani Hary Sulistyo Hary Sulistyo Hary Sulistyo Hasan, Jordan Hutama Arif Bramantyo INDAH PURNAMASARI Indah Purnamasari Indah Purnamasari Indriani Indriani Irawan, Dewanda Jamil, Maizun Binti Kalsum, Leila Kurnianingsih Kurnianingsih, Kurnianingsih Kurniansyah, Muhammad Harry Kusuma, Mutmainnah Ningtyas Luqita, Syauqi Fajar M. Mar’ie Rizqi Ganisha Martha Aznury Martha Aznury Moniruzzaman Muhammad Yerizam Muhammad Zaman Mustain Mustain Nor, Siti Najdah Binti Mohd Nurrani, Hanny Octhaviana, Vivi Oktaviani, Cantika Cakhya Pramudya, Nabila Salwa Pramuji, Tulus Putra, Aan Ade Putra, Asri Eka Putri, Nabilah Ayunisa Rafit Arjeni Rahmaniar Rahmaniar Rahmaniar, Rahmaniar RD Kusumanto Risdzuan, Aiman Arif Bin Robert Junaidi Robert Junaidi Rochmadi Rochmadi Rochmadi Rochmadi Rochmadi Rochmadi Rochmadi Rochmadi Rochmadi Rochmadi Rochmanto, Raditya Artha Rochmatika, Rizkha Rochmatika, Rizkha Ajeng Ronaldo Rozi, Fathor Rusdianasari Rusdianasari Samosir, Devina Sanchia Sardewi, Tri Selastia Yuliati Selastia, Selastia Selly Ratna Sari Sindung HW Sasono, Sindung HW Slamet Widodo Suharto Honggokusumo Suharto Honggokusumo Suharto Honggokusumo Suharto Honggokusumo Suharto Honggokusumo Syamsul Hidayat, Sidiq Syari, Aida Syaritri, Dwi Thomas Agung Setyawan, Thomas Agung Tri Raharjo Yudantoro Triyono, Liliek Utari Agustina Wahyu Wulandari Wijaya, Satria Agung Wiktasari Wiktasari, Wiktasari Yahya, Muhammad Habib Yohandri Bow Yuliani, Aliyah Yuliati - Yuniar Zaman, Muhammad Zikri, Ahmad