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Bambang Poerwadi
Departemen Teknik Kimia, Universitas Brawijaya, Indonesia
Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Energy Engineering Environmental Science Immunology & microbiology Industrial & Manufacturing Engineering Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Public Health Social Sciences Other

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Pemanfaatan Methylene Blue dan Kulit Pisang Sebagai Komponen RFB (Redox Flow Battery) Baktiyar, Moch Hanif; Adiningrum, Anggita; Septianingsih, Fatin; Poerwadi, Bambang
Jurnal Rekayasa Bahan Alam dan Energi Berkelanjutan Vol. 5 No. 1 (2021)
Publisher : Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.rbaet.2021.005.01.02

Abstract

RFB (Redox Flow Battery) adalah baterai sekunder yang memberikan konversi energi antara kimia dan listrik melalui proses reaksi redoks secara bolak balik oleh 2 pasangan elektron dan proton. RFB dengan bahan aktif Vanadium (VRB) merupakan jenis RFB yang banyak digunakan dan mengalami berbagai masalah seperti harga Vanadium mahal, bersifat toksik dan pelarut (H2SO4) bersifat korosif. Oleh karena itu muncul gagasan penggunaan komponen elektrolit organik ramah lingkungan untuk menggantikan VRB. Methylene Blue dan kulit pisang dipilih sebagai komponen elektrolit RFB berbasis organik. Methylene Blue memiliki 2 pasang elektron-proton yang mampu memberikan reaksi redoks yang reversibel, dimana berpotensi sebagai bahan aktif elektrolit RFB. Kulit pisang juga berpotensi dijadikan sebagai pelarut elektrolit menggantikan H2SO4, karena mengandung karbohidrat, asam sitrat dan beberapa mineral elektrolit berupa air, kalium, garam sodium, fosfor dan magnesium yang dapat mendukung potensi sifat elektrolit kulit pisang. Metode penelitiannya adalah studi literatur, dan didapatkan hasil Methylene Blue mampu memberikan performa (efisiensi) terbaik pada RFB dan kulit pisang sebagai elektrolit pada baterai mampu menghasilkan tegangan mendekati bahkan melebihi tegangan keluaran VRB. Hal ini membuktikan Methylene Blue terbukti dapat dijadikan bahan aktif dan kulit pisang sebagai pelarut elektrolit.
SYNTHESIS OF RESIDUAL OIL FROM SPENT BLEACHING EARTH (SBE) INTO BIODIESEL USING MICROWAVE REACTOR Prakoso, Haryo Tejo; Mawardanti, Azzahra Salsabila Syifa; Maftuhah, Azizatul; Dimawarnita, Firda; Faramitha, Yora; Poerwadi, Bambang
Jurnal Teknologi Industri Pertanian Vol. 34 No. 2 (2024): Jurnal Teknologi Industri Pertanian
Publisher : Department of Agroindustrial Technology, Bogor Agricultural University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24961/j.tek.ind.pert.2024.34.2.185

Abstract

Spent bleaching earth (SBE) is a waste from the crude palm oil CPO refining process which contains high oil content, around 20-30%. There are several methods to reduce SBE oil content, one of which is the solvent extraction method. SBE residual oil can be utilized as a raw material for biodiesel. This research aims to determine the mass ratio of SBE and solvent, the optimal temperature for extracting residual oil from SBE, and the potential of residual oil from SBE to be used as biodiesel using a microwave reactor. Residual oil extraction was carried out at varying mass ratios of SBE and solvent (1:2, 1:4, and 1:6) and varying temperatures (26, 40, and 50°C). The treated residual oil was esterified and subjected to transesterification reaction with 15% methanol and 1% KOH for 10 minutes at 60°C using a microwave reactor. The optimal extraction result for residual oil was at a 1:4 ratio and 26°C with a yield of 19.12%. There is also an increase in surface area in deoiled-SBE. The conversion of residual oil from SBE into biodiesel yielded 33.53% with a conversion value of 45.28% and a FAME content of 92.97%. The characteristics of the produced biodiesel meet the Indonesian National Standard (SNI) for biodiesel with density of 0.8674 g/cm3 and viscosity of 5.69 mm2/s. Keywords: extraction, fatty acid, transesterification, yield
Training on Bioconversion of Coffee Pulp Waste into Vegan Leather Raw Material in Dusun Krajan, Tegalharjo, Glenmore, Kabupaten Banyuwangi Ardyati, Tri; Mora, Giral Baines; Permatasari, Dewi; Maulidiyah, Nuris Shobah; Wahyudi, Aleyda Nur Halizah; Srihardyastutie, Arie; Poerwadi, Bambang; Zubaidah, Elok
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.v10i11.9473

Abstract

Banyuwangi is the largest coffee plantation centre in East Java, with robusta and arabica coffee production reaching 10,518 tonnes per year. Coffee plantation waste, which is abundant, is known as coffee pulp. Coffee pulps can be converted into organic compost/fertilizer, animal feed, and eco-friendly products such as cellulose-based nata/membrane. The abundant availability of coffee pulp waste in Banyuwangi Regency has not been correctly handled or processed to prevent environmental impact. Converting coffee pulp waste into eco-friendly products will benefit the surrounding community and increase the added value of the waste. To overcome these problems, it is necessary to engage in activities involving the local community, local government, and agro-tourism actors through counseling and training on processing coffee pulp waste/bioconversion into eco-friendly products, thereby benefiting the community in Banyuwangi Regency, especially in the Glenmore area. Training participants were given a questionnaire for assessment. Based on the results of the questionnaire analysis, it is known that the participants' understanding before the activity is: 40% of participants were very poorly understood, 13% were poorly understood, 20% were quite understood, 13% understood, and 13% were very familiar with the material of processing coffee pulp waste. After receiving training, 27% of participants achieved an excellent understanding, 33% had a moderate understanding, and 33% had a somewhat understanding. Additionally, there were still participants who did not understand as much as 7%. Based on the participants' assessment, 67% felt that the benefits of this activity were excellent and should be carried out on an ongoing basis.
Co-Authors Adiningrum, Anggita Arie Srihardyastutie Baktiyar, Moch Hanif Bambang Ismuyanto Budi Kamulyan Christia Meidiana Christina Wahyu Kartikowati Dewi Permatasari, Dewi Dhanang Edy Pratama, Dhanang Edy Diah Agustina P Diah Agustina Puspitasari Diah Agustina Puspitasari, Diah Agustina Diah Mardiana Dimawarnita, Firda Elok Zubaidah Evi Sulviani Nengseh Faramitha, Yora Farid Fadillah Miranda, Farid Fadillah Jamhari Jamhari Maftuhah, Azizatul Mar’atul Fauziyah Maulidiyah, Nuris Shobah Mawardanti, Azzahra Salsabila Syifa Misriyani Misriyani Mora, Giral Baines Mutiara Dita Arini, Mutiara Dita PRAKOSO, Haryo Tejo Rama Oktavian, Rama Rizka Zulhijah, Rizka Rosyadi, Ahmad Ridwan Rurini Retnowati Rurini Retnowati Septiadi, Hardo Triwahyu Septianingsih, Fatin Siannita Chandra SUPRIYONO Supriyono Supriyono Tri Ardyati Vivi Anita Aprilia, Vivi Anita Wahyu K, Christina Wahyudi, Aleyda Nur Halizah Wibowo, Ayu Indah Yuniardi, Muhammad Ichya