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All Journal Jurnal Teknik ITS Jurnal Teknik Kimia Jurnal Fisika Unand Jurnal IPTEK Konversi Jurnal Kimia Riset BERDIKARI : Jurnal Inovasi dan Penerapan Ipteks Akta Kimia Indonesia G-Tech : Jurnal Teknologi Terapan Nusantara Science and Technology Proceedings International Journal of Eco-Innovation in Science and Engineering (IJEISE) Jurnal PkM (Pengabdian kepada Masyarakat) AJARCDE (Asian Journal of Applied Research for Community Development and Empowerment) Jurnal Pengbdian Teknik Mesin Madani: Jurnal Pengabdian Masyarakat dan Kewirausahaan Joong-Ki Joong-Ki
Yogaswara, Rachmad Ramadhan
Program Studi Teknik Kimia, Universitas Pembangunan Nasional Veteran Jawa Timur
Religion Agriculture, Biological Sciences & Forestry Arts Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mechanical Engineering Medicine & Pharmacology Physics Social Sciences Other

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Glucose Synthesis from Imperata Cylindrica by Acid Hydrolysis Process Muhammad Ashfal Ashfiya; Ahmad Rizky Safrudin; Ni Ketut Sari; Rachmad Ramadhan Yogaswara
AJARCDE (Asian Journal of Applied Research for Community Development and Empowerment) Vol. 9 No. 2 (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.v9i2.752

Abstract

Imperata cylindrica, commonly known as alang-alang, is a fast-growing, abundant, and underutilised grass often considered a weed. However, its high cellulose content makes it a promising lignocellulosic biomass for renewable glucose production. This study explores the synthesis of glucose from Imperata cylindrica through acid hydrolysis, with the aim of utilizing this low-cost biomass as a sustainable raw material for bio-based products. The hydrolysis process was investigated using two main variables: hydrolysis time (1, 1.5, 2, 2.5, and 3 hours) and acid concentration (1%, 1.5%, 2%, 2.5%, and 3%). The resulting hydrolysates containing glucose were analyzed using a refractometer, UV-Vis spectrophotometer, and further optimized using Response Surface Methodology (RSM). The highest glucose content obtained by refractometer was 6.5%, while RSM predicted a maximum of 6.49%, and UV-Vis analysis showed 6.34%. All optimal results were achieved under the condition of 2.5 hours of hydrolysis time and a 3% acid concentration. These findings highlight the potential of Imperata cylindrica as a viable and sustainable feedstock for glucose production through acid hydrolysis, contributing to the development of alternative bio-resources. Contribution to Sustainable Development Goals (SDGs):SDG 6: Clean Water and SanitationSDG 11: Sustainable Cities and CommunitiesSDG 13: Climate ActionSDG 15: Life on Land
Potensi Ekstrak Kulit Buah Naga Merah (Hylocereus polyrhizus) sebagai Bioreduktor Untuk Biosintesis Nanopartikel Putri, Hawa Aritma Sunarko; Oktarini, Rahmi; Islamiyah, Syuaibatul; Redjeki, Sri; Yogaswara, Rachmad Ramadhan
Jurnal Fisika Unand Vol 13 No 4 (2024)
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jfu.13.4.497-503.2024

Abstract

One type of antioxidant that is usually found in plants such as fruit, skin, leaves, and others is flavonoids. In addition, flavonoids can be used for the formation of nanoparticles (NPs) as a bioreductor. The purpose of this study was to examine the utilization of red dragon fruit peel extract as a bioreductor in the synthesis of zinc oxide nanoparticles from zinc nitrate precursors using the biosynthesis method. Red dragon fruit peel was macerated to obtain flavonoids. Zinc nitrate was used as a precursor to make ZnO NPs. UV-VIS spectrophotometric analysis showed that the total flavonoids contained in the extract were 5.6 x 10-4 mg QE/g. By FTIR test, ZnO nanoparticles are known to contain OH groups characterized by a peak in the 3374.10 cm-1 region. XRD results show that ZnO nanoparticles have a hexagonal wurtzite shape. SEM-EDX results show that the ZnO nanoparticles formed have a size of 157-174 nm and contain the constituent composition of 69.41% zinc and 29.35% oxygen. ZnO nanoparticles have anticancer effects that can be used in anticancer drugs, which can efficiently suppress synergistic cytoxicity in leukemia cell lines under UV irradiation. 
Reduction of Cu and Cr Metal Content in Electroplating Industrial Liquid Waste Using the Ion Exchange Method Tsabitah Nabilah Khairunnisa; Yesi Nabila Zahro Herazi; Rachmad Ramadhan Yogaswara; Mu’tasim Billah; Nurul Widji Triana
G-Tech: Jurnal Teknologi Terapan Vol 9 No 3 (2025): G-Tech, Vol. 9 No. 3 July 2025
Publisher : Universitas Islam Raden Rahmat, Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70609/g-tech.v9i3.7374

Abstract

Electroplating industrial waste contains toxic chemicals that pose risks to health and environment, especially if they enter household wastewater systems. Therefore, treatment is necessary to reduce heavy metal content using the ion exchange method. This study utilized Amberlite IR 120Na resin as the ion exchange medium in electroplating waste. This study aims to reduce metal content in electroplating industrial wastewater using the ion exchange method by evaluating the effects of resin height and flow rate. The process was conducted with variations in flow rate (100 ml/min, 200 ml/min, 300 ml/min, 400 ml/min, 500 ml/min) and resin height (3 cm, 6 cm, 9 cm, 12 cm, 15 cm). The waste was passed through the ion exchange column, and the remaining Cu and Cr metal concentrations were measured. The results indicated that the optimal conditions occurred at a flow rate of 100 ml/min and a resin height of 15 cm, achieving a reduction of Cu metal by 90.16% and Cr metal by 83.36%. The Cu concentration after the process met quality standards under all conditions, while the Cr concentration met quality standards at resin heights of 12 cm and 15 cm. The ion exchange method proved effective in reducing heavy metal pollution.
Effect of Absorbent Type on the Absorption Durability of Biogas Purification Muhammad, Fitrah Guna; Ibadurrahman, Muhammad Watsieq; Yogaswara, Rachmad Ramadhan; Karaman, Novel; Suprihatin, Suprihatin; Sani, Sani
AJARCDE (Asian Journal of Applied Research for Community Development and Empowerment) Vol. 10 No. 1 (2026)
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.v10i1.873

Abstract

Biogas purification is essential to increase methane concentration and reduce impurities such as carbon dioxide and hydrogen sulfide, which decrease calorific value and cause corrosion in energy systems. This study evaluates the effect of absorbent solution type on biogas purification efficiency and absorption durability using chemical absorption methods. Alkaline solutions including sodium hydroxide (NaOH), potassium hydroxide (KOH), calcium hydroxide (Ca(OH)?), and their binary mixtures were employed at a concentration of 20% (w/v). Biogas derived from molasses fermentation was passed through bubble column absorbers and analysed using an Orsat apparatus over 2–10 days of absorption. Results show that all absorbents significantly increased methane concentration while reducing CO? and H?S. The highest methane concentration of 86.75% was achieved using KOH on day four, exceeding the Indonesian biogas quality standard (SNI 8019:2014). Absorbent saturation occurred after approximately six days, indicated by declining purification performance. These findings confirm that chemical absorption using alkaline solutions is effective for biogas upgrading, with KOH demonstrating the best overall performance and durability. Contribution to Sustainable Development Goals (SDGs):SDG 7: Affordable and Clean EnergySDG 15: Life on Land
Co-Authors A.R Yelvia Sunarti Achmad Chumaidi, Achmad Achmad Rizaldi Adeningrum, Della Arista Adrian Gunawan, Adrian Afida Kartika Sari Ahmad Rizky Safrudin Anggara, Ikhwan Rifki anggraini, putri anggraini Anita Karlina AR Yelvia Sunarti Ardiansyah, Mochammad Rifqi Awildan El Fath AYU RAHMAWATI Bambang Wahyudi Bellani Yunfa Winata Billah, Mu’tasim Billah, Mu’tasim Daud, Daud Dhining Ayu Elsa Rosyidah Eristya Maya Safitri Erliyanti, Nove Kartika Erwan Adi Saputro Faidah, Lutfatin Farha, Ayu Shafira Fariana, Nida Fransisca Asteria Nandra Febiola Hamzah Fansuri Handi Ramadhan Hawa Aritma Sunarko Putri Ibadurrahman, Muhammad Watsieq Jiwantara, Dhebby Mas Ketut Sumada Khairunnisa Khairunnisa Kindriari Nurma Wahyusi Kusumawati, Yuly L.Urip Widodo, Yohandrik Novel Karaman Laksminingsih, Arieanthi Luckyana Aini Luckyana Aini Mardiansyah, Yuda Eka Melita, Lusia Nada Merry Jhoe Stefanny Mohd Hafiz Dzarfan Othman Mohd Jumain Jalil Mu'tasim Billah Muhammad Ashfal Ashfiya Muhammad Hakam Muhammad, Fitrah Guna Mutasim Billah Mu’tasim Billah Nandini , Atika Naufal Alkautsar Maulana Nerissa Arviana Nerissa Arviana Ni Ketut Sari Nuha, Farhah Kamilatun Nuraini, Adila Silmi Nurul Widji Triana Oktarini, Rahmi Prihardani, Fitri Pusfitasari, Memik Dian Putri, Hawa Aritma Sunarko Rahmi Oktarini Rensa Arnas Yunarwan Reva Edra Nugraha Rieswana, Yuried Diilan Rina Yulianti Rohmad Taufiqi Romalawati, Meiswita Rosa, Aulia Sa'adah, Tantri Nailis Sani Shanti Larissa Silvana Dwi Nurherdiana Sintha Soraya Santi Sri Redjeki Sri Redjeki Suprihatin Suprihatin Susilowati Syafsir Akhlus Syuaibatul Islamiyah Tahan Aprijal Simamora Tantri Nailis Sa'adah Tikat Deri Agratiyan Tsabitah Nabilah Khairunnisa Wahyu Arif Dharmawan Yesi Nabila Zahro Herazi Zuhdi, Farhan Muhammad