Article Per Year (5 Year)
p-Index From 2021 - 2026
4.117
P-Index
This Author published in this journals
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

Published : 34 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 34 Documents
Search

 1   2   3   4 
Mass Balance Analysis of Bioethanol Production from Petai Peel (Parkia speciosa) through Enzymatic Process Erwan Adi Saputro; Rachmad Ramadhan Yogaswara; Nerissa Arviana; Luckyana Aini; A.R Yelvia Sunarti; Reva Edra Nugraha
International Journal of Eco-Innovation in Science and Engineering (IJEISE) Vol. 2 No. 2 (2021): IJEISE
Publisher : International Journal of Eco-Innovation in Science and Engineering (IJEISE)

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

Abstract

The consumption of fuel for transportation is increasing during the last decade. Bioethanol is one of the renewable energy has a good opportunity to be applied when the lack of fossil fuel. Bioethanol is derived from the lignocellulose substance through a fermentation process. In this research, the lignocellulose came from the petai peel (Parkia speciosa). The peel was hydrolyzed using an enzyme and continuously fermented for 5 days. The aim of this research is to analyst the mass balance of the bioethanol production from petai peel (Parkia speciosa) through the enzymatic process. The enzyme used in this research are alfa amylase (10 ml) and glucoamylase (10 ml), also Saccharomyces cerevisiae used in the fermentation process. The result shows that the initial material of petai peel was 57 grams will produce bioethanol around 14 grams.
Optimization of Neutralize Crude Gypsum (NCG) Quality through Flash Dryer Utilization at Plant IIIA PT. Petrokimia Gresik Rensa Arnas Yunarwan; Shanti Larissa; Rohmad Taufiqi; Rachmad Ramadhan Yogaswara
International Journal of Eco-Innovation in Science and Engineering (IJEISE) Vol. 4 No. 1 (2023): IJEISE
Publisher : International Journal of Eco-Innovation in Science and Engineering (IJEISE)

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

Abstract

Neutralized Crude Gypsum (NCG) is produced as by-product from phosphoric acid plant at Plant IIIA PT. Petrokimia Gresik. The aims of this study are finding main cause and solution from Neutralized Crude Gypsum (NCG) quality reduction at PT. Petrokimia Gresik Plant IIIA. This research is done by qualitative analysis in order to collect the data of gypsum quality every month. Gypsum characteristics is observed by some instrument analysis such as spectrophotometry UV-Vis, atomic absorption spectrometry (AAS), and gravimetry technique. NCG was taken at different point on gypsum disposal land and different times to analyze its quality change. NCG sample shows decreased quality having higher moisture content at September that does not comply the SNI 715:2016 about gypsum minimum quality. Flash dryer is designed in this study to reduce the water concentration inside the surface of gypsum particle. Flash dryer design can lower the H2O content based on material balance analysis at finishing sector Plant IIIA unit.
Keripik Kuping Gajah dari Kopi Varian Robusta Sebagai Inovasi Produk Pangan Desa Kalipucang anggraini, putri anggraini; Melita, Lusia Nada; Ardiansyah, Mochammad Rifqi; Zuhdi, Farhan Muhammad; Nuraini, Adila Silmi; Nuha, Farhah Kamilatun; Rieswana, Yuried Diilan; Sa'adah, Tantri Nailis; Yogaswara, Rachmad Ramadhan
Madani: Jurnal Pengabdian Masyarakat dan Kewirausahaan Vol. 2 No. 2 (2024): Januari 2024
Publisher : LPPM Universitas Internasional Batam

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37253/madani.v2i2.8716

Abstract

Kopi merupakan jenis tanaman yang berbentuk pohon perdu kecil dari famili Rubiaceae dengan genus Coffea. Desa kalipucang merupakan desa yang memiliki komoditas unggulan salah satunya adalah kopi varian robusta. Kopi varian robusta memiliki karakter rasa cokelat dan terasa manis di lidah, serta tidak berasa getirnya. Potensi dari hasil kopi varian robusta belum termanfaatkan dengan maksimal yakni sebatas seduhan minuman yang dihidangkan kepada tamu atau hanya untuk minuman bersantai. Pengabdian masyarakat ini bertujuan untuk meningkatkan nilai ekonomi dari kopi varian robusta serta meningkatkan pemahaman dan keterampilan warga Desa Kalipucang terkait dengan pengolahan kopi robusta menjadi suatu produk pangan berupa keripik kuping gajah. Terdapat empat tahapan dalam kegiatan pengabdian masyarakat yang dilakukan, yaitu tahap pemberian brosur, penyampaian materi, demonstrasi, dan berdiskusi. Kesimpulan pada kegiatan pengabdian masyarakat ini, warga Desa Kalipucang merasa teredukasi dan terbantu dalam menemukan suatu alternatif produk pangan berbahan dasar kopi arabika. Rekomendasi pada kegiatan pengabdian masyarakat ini yaitu diharapkan adanya pelatihan secara rutin untuk meningkatkan pemahaman dan keterampilan warga, khususnya ibu-ibu UMKM di Desa Kalipucang sehingga produk pangan keripik kuping gajah dari kopi varian robusta ini dapat dijadikan sebagai peluang ide bisnis yang nantinya dapat meningkatkan perekonomian masyarakat desa kalipucang.
Pelatihan Berbicara Bahasa Inggris secara Online “Daily Activities” dengan Zoom Meeting Saputro, Erwan Adi; Yogaswara, Rachmad Ramadhan; Erliyanti, Nove Kartika; Billah, Mu’Tasim
abdimesin Vol. 1 No. 1 (2021): Abdi-mesin
Publisher : UPN "Veteran" Jawa Timur

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33005/abdi-mesin.v1i1.12

Abstract

Pandemi covid-19 memberi dampak pada berbagai macam aspek kehidupan. Salah satunya pada aspek pendidikan, pemerintah menetapkan kebijakan School From Home (SFH) atau sekolah dari rumah sehingga kegiatan pembelajaran dilaksanakan menggunakan media online. Kegiatan ini diadakan untuk meningkatkan semangat belajar berbahasa inggris di masa pandemi, menggunakan media Zoom yang dikhususkan pada kegiatan sehari-hari (daily activities). Pelatihan ini diikuti oleh anak SD dari berbagai macam sekolah. Kegiatan ini berhasil membuat peserta kegiatan mampu menyampaikan kegiatan sehari-hari dalam bahasa inggris dengan baik dan benar.
Evaluation of Boiler Feed Water Quality in Tofu Industry UD. FIT in Bocek Village Prihardani, Fitri; Fariana, Nida; Yogaswara, Rachmad Ramadhan; Islamiyah, Syuaibatul
International Journal of Eco-Innovation in Science and Engineering (IJEISE) Vol. 5 No. 1 (2024): IJEISE
Publisher : UPN Veteran Jatim

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33005/ijeise.v5i1.123

Abstract

The UD FIT industry, situated in Bocek Village, Karangploso District, operates as a tofu factory employing modern equipment, including a fire tube boiler. The quality of feed water utilized in the boiler is essential for optimizing its efficiency. This study aimed to analyze the boiler feed water sourced from household wells at UD FIT's tofu factory, using various indicators such as turbidity, iron content, total dissolved solids (TDS), hardness, and pH levels. The test results revealed a temperature of 26°C, TDS of 253 mg/L, turbidity of 4.74 NTU, iron content of 1.123 mg/L, hardness of 180.5 mg/L, and pH of 7.89, with no detectable odor, color, or taste. Based on these findings, it is concluded that the boiler feed water utilized by UD FIT generally meet the quality standards, except for the pH parameter, which is not in accordance with the standard.
Pemanfaatan Kulit Buah Naga Merah Sebagai Bahan Baku Pembuatan Glukosa Cair dengan Proses Hidrolisis Enzimatis Awildan El Fath; Naufal Alkautsar Maulana; Rachmad Ramadhan Yogaswara
G-Tech: Jurnal Teknologi Terapan Vol 8 No 4 (2024): G-Tech, Vol. 8 No. 4 Oktober 2024
Publisher : Universitas Islam Raden Rahmat, Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70609/gtech.v8i4.5151

Abstract

Red dragon fruit skin contains many beneficial nutrients. The carbohydrate composition of dragon fruit skin includes 11.5% of the whole, with details of lignin 37.18%, cellulose 9.25%, starch 11.07%, pectin 10.79%. This study aims to understand the effect of enzyme concentration used, namely α-amylase and β-amylase enzymes and also the effect of hydrolysis time, on the glucose content produced. The method used is a hydrolysis method that utilizes enzymes, namely the enzymatic hydrolysis method. The variables determined were the concentration of enzymes used and the length of time the hydrolysis was carried out. The process was carried out by mixing the solution with α-amylase and β-amylase enzymes into a glass beaker using various enzyme variations and hydrolysis times. Both variables were run in a waterbath at 65℃ and the pH of the solution was pH 5-6. The best condition was obtained at (1%:5%) α-amylase and β-amylase concentratiom  and 5 days of hydrolysis time with 62.2% glucose content, 37.15% water content and 0.25% ash content.
Potensi Ekstrak Kulit Buah Naga Merah (Hylocereus polyrhizus) sebagai Bioreduktor Untuk Biosintesis Nanopartikel Hawa Aritma Sunarko Putri; Rahmi Oktarini; Syuaibatul Islamiyah; Sri Redjeki; Rachmad Ramadhan Yogaswara
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. 
Pemanfaatan Wadah Cat Sebagai Alat Fermentor Pembuatan Pupuk Padat di Desa Kalipucang Tantri Nailis Sa'adah; Rachmad Ramadhan Yogaswara
Joong-Ki : Jurnal Pengabdian Masyarakat Vol. 3 No. 1: November 2023
Publisher : CV. Ulil Albab Corp

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56799/joongki.v3i1.2569

Abstract

Desa Kalipucang merupakan desa yang memiliki potensi alam melimpah khususnya di bidang perkebunan seperti perkebunan pisang, kopi, dan durian. Perkebunan di desa Kalipucang belum tumbuh dengan sempurna karena masih menggunakan pupuk kimia anorganik, sehingga perlu adanya upaya untuk meningkatkan kualitas hasil perkebunan tersebut dengan menggunakan pupuk organik. Tim Bina Desa Kalipucang Teknik Kimia UPN ”Veteran” Jawa Timur 2023 melakukan pemanfaatan wadah cat sebagai alat fermentor pembuatan pupuk padat. Alat fermentor diperlukan untuk proses fermentasi. Alat tersebut dibuat dari wadah cat yang dapat memproduksi pupuk organik dalam jumlah yang banyak. Pupuk organik padat yang dibuat oleh Tim Bina Desa merupakan pupuk yang terbuat dari bahan organik seperti pelepah pisang dan kulit pisang dengan memanfaatkan EM4 (Effective Microorganism-4) atau Mikroorganisme Lokal (MOL). Selanjutnya Tim Bina Desa melakukan sosialisasi pembuatan pupuk padat yang bertujuan memberikan informasi mengenai cara pembuatan pupuk padat sehingga masyarakat Desa Kalipucang dapat melakukan praktik pembuatan pupuk padat di tempat masing-masing.
Biosintesis Nanopartikel ZnO Menggunakan Ekstrak Daun Tanaman Jagung (Zea Mays L.) Adeningrum, Della Arista; Rosa, Aulia; Wahyusi, Kindriari Nurma; Yogaswara, Rachmad Ramadhan
Jurnal Fisika Unand Vol 14 No 2 (2025)
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jfu.14.2.160-166.2025

Abstract

ZnO nanoparticles can be synthesized using the biosynthesis method using corn plant leaf extract (Zea Mays L.) as a bioreductant. The aim of this research is to examine the effect of variations in Zinc Nitrate Hexahydrate precursor concentration and calcination temperature on the yield, as well as the characterization of ZnO nanoparticles. Corn plant leaves are extracted to obtain flavonoid compounds. The resulting extract is mixed with the precursor solution then calcined to obtain ZnO nanoparticles.  The highest yield was produced in a sample with a precursor concentration of 0.1M with a calcination temperature of 300˚ C of 22.6082%. SEM-EDX results on samples with a precursor concentration of 0.3 M and a calcination temperature of 700˚C show various particle morphologies and sizes of ZnO nanoparticles, namely 91 nm; 97 nm; 109 nm; 435nm; and 973 nm, and the composition of ZnO nanoparticles consists of 76.43% Zn atomic weight and 23.57% O ​​atomic weight. at a calcination temperature of 700˚ C shows a pure ZnO sample with an element composition of 80.3% Zn atomic weight and 19.7% O atomic weight. The size of the crystal diameter for XRD analysis on samples with a precursor concentration of 0.3M with calcination temperatures of 300 ˚C and 700˚ C were 40.8564 nm and 31.7203 nm, respectively. Both samples have the same crystal system, namely hexagonal zincite.
Sintesis Kristalin Selulosa Berbahan Limbah Pelepah Pisang Rahmawati, Ayu; Faidah, Lutfatin; Ramadhan Yogaswara, Rachmad
Jurnal Fisika Unand Vol 14 No 4 (2025)
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jfu.14.4.332-338.2025

Abstract

Nanocrystalline cellulose (CNC) was successfully synthesized from banana sheath waste and demonstrated promising potential for applications in biocomposites, sustainable materials, and biomedical fields. This study aimed to produce CNC through an environmentally friendly chemical process while investigating the effects of bleaching temperature and acid concentration on CNC yield and properties, in accordance with ISO/TS 20477:2017. The process involved delignification using 17% NaOH at 100°C for 1.5 hours to remove lignin, followed by bleaching with 10% H₂O₂ for 1.5 hours at various temperatures (70°C–90°C) to enhance cellulose purity. Acid hydrolysis using H₂SO₄ at concentrations of 10%–30% was conducted at 45°C for 40 minutes to break down amorphous regions and form nanocrystalline structures. Chesson-Datta analysis revealed cellulose, hemicellulose, and lignin contents of 80.32%, 5.257%, and 3.26%, respectively. Optimal conditions were found at 80°C bleaching temperature and 10% acid concentration, yielding 2.5606 g of CNC. SEM-EDX analysis showed smooth fibrous morphology with 63.55% carbon and 35.83% oxygen content, while XRD analysis indicated particle sizes ranging from 8.76 to 24.12 nm, with an average of 14.25 nm.
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