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All Journal Reaktor International Journal of Science and Engineering (IJSE) International Journal of Renewable Energy Development INTEK: Jurnal Penelitian Al-Ard: Jurnal Teknik Lingkungan Jurnal Ilmu Pengetahuan dan Teknologi (IPTEK) Journal of Bioresources and Environmental Sciences Journal of Bioresources and Environmental Sciences International Journal of Renewable Energy Development Bulletin of Chemical Reaction Engineering & Catalysis JURNAL REKAYASA KIMIA & LINGKUNGAN
Linda Aliffia Yoshi, Linda Aliffia
Institut Teknologi Indonesia
Agriculture, Biological Sciences & Forestry Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Earth & Planetary Sciences Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology

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Evaluation of Total Hardness and Qualitative Analysis of Boiler Water at the Food Jam Industry, Tangerang, Indonesia Satrio Kuntolaksono; Imam Wicaksono; Febrianty Emilia; Enjarlis Enjarlis; Linda Aliffia Yoshi
Journal of Bioresources and Environmental Sciences Vol 1, No 3 (2022): December 2022
Publisher : BIORE Scientia Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jbes.2022.15826

Abstract

Food industry is one of the most crucial and rapidly growing economic sectors in Indonesia. One of the examples is the food jam industry. This industry was located in Tangerang, Indonesia. The majority of the food jam industry uses its own source of water, so this part is also important to water producers in Indonesia. Water used in the food jam industry should meet the requirements of at least drinking water quality, so the factories need to treat the water. Good quality water is water that requires good physical, chemical, and bacteriology properties. Hard water is a term known for water that contains a high concentration of minerals such as Calcium (Ca) and Mag-nesium (Mg). Moreover, water with very high degrees of hardness is harmful to health. In this study, we want to evaluate and determine the pH, total hardness, and total dissolved solids (TDS) at three different times namely morning, midday, and afternoon. The results obtained in the range of pH analysis are 6.98 to 7.99 with all cover times. The total hardness in the boiler water and the TDS are around 252.6 to 388.2 mg/L and 310 to 406 mg/L, respectively. These results indicated that it has fulfilled the requirements for total hardness values under the Minister of Health Regulations (Permenkes) No. 492/Menkes/Per/IV/2010.
Performance and Techno-Economic Analysis of Scaling-up A Single-Chamber Yeast Microbial Fuel Cell as Dissolved Oxygen Biosensor Marcelinus Christwardana; Linda Aliffia Yoshi
International Journal of Renewable Energy Development Vol 9, No 3 (2020): October 2020
Publisher : Center of Biomass & Renewable Energy, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/ijred.2020.29980

Abstract

The Microbial fuel cells (MFCs) are electrochemical devices that can be utilized as biosensors, specifically Dissolved Oxygen (DO) biosensors. In this research, performance and techno-economic of MFC-based DO biosensors with two sizes, small and large, were evaluated and analysed to determine whether it is more economical to use a small or large reactor. MFC-based DO biosensors were also applied to an irrigation canal. When MFC immersed into distilled water with several variations of DO, the correlation between DO and current density produced equation with R2 values around 0.9989 and 0.9979 for SYMFC and LYMFC, respectively. The power density for SYMFC and LYMFC was 3.48 and 10.89 mW/m2, respectively, in DO 6. Higher power densities are correlated with the electrode surface area, especially the larger cathodic surface area. When applied to the irrigation canal, DO values measured using SYMFC and LYMFC have errors of around 3.39 and 4.42%, respectively, when compared to DO values measured using DO meters. LYMFC requires a capital cost of around $ 234.22 or 2.57 times higher than SYMFC, although it generates almost similar cost per mW/m2, $ 21.51 and $ 26.23 for LYMFC and SYMFC, respectively. The results concluded that yeast MFC -based DO biosensors with smaller sizes can achieve more economical compared to larger sizes.
Performance of Yeast Microbial Fuel Cell Integrated with Sugarcane Bagasse Fermentation for COD Reduction and Electricity Generation Marcelinus Christwardana; J. Joelianingsih; Linda Aliffia Yoshi
Bulletin of Chemical Reaction Engineering & Catalysis 2021: BCREC Volume 16 Issue 3 Year 2021 (September 2021)
Publisher : Masyarakat Katalis Indonesia - Indonesian Catalyst Society (MKICS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.9767/bcrec.16.3.9739.446-458

Abstract

The purpose of this analysis is to evaluate the efficiency of the Microbial Fuel Cell (MFC) system incorporated with the fermentation process, with the aim of reducing COD and generating electricity, using sugarcane bagasse extract as a substrate, in the presence and absence of sugarcane fibers. There is a possibility of turning bagasse extract into renewable bioenergy to promote the sustainability of the environment and energy. As a result, the integration of liquid fermentation (LF) with MFC has improved efficiency compared to semi-solid state fermentation (S-SSF). The maximum power generated was 14.88 mW/m2, with an average COD removal of 39.68% per cycle. The variation margin of the liquid fermentation pH readings remained slightly decrease, with a slight deflection of +0.14 occurring from 4.33. With the absence of bagasse fibers, biofilm can grow freely on the anode surface so that the transfer of electrons is fast and produces a relatively high current. Experimental data showed a positive potential after an effective integration of the LF and MFC systems in the handling of waste. The product is then simultaneously converted into electrical energy. Copyright © 2021 by Authors, Published by BCREC Group. This is an open access article under the CC BY-SA License (https://creativecommons.org/licenses/by-sa/4.0). 
The Influence of Various Substrates on Power Generation in The Operation of Yeast Microbial Fuel Cells Christwardana, Marcelinus; Joelianingsih, J.; Yoshi, Linda Aliffia
Reaktor Volume 22 No.2 August 2022
Publisher : Department of Chemical Engineering, Faculty of Engineering, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/reaktor.22.2.36-41

Abstract

Several carbon substrates were tried, including glucose commercial, pro analysis glucose, commercial sugar, and yeast extract - peptone - d glucose (YPD) medium to improve the efficiency of the single chamber microbial fuel cell (MFC). The power production of various electron donors was investigated using baker yeast Saccharomyces cerevisiae. Voltage and power density generation were used to establish the pattern of substrate use. In addition, electrochemical analysis of the anodic biofilm was performed. S. cervisiae was shown to successfully consume YPD medium by anode respiration with a higher power density of 18.40±1.98 mW/m2, followed by pro analysis glucose (9.41±1.15 mW/m2), commercial glucose (1.30±0.10 mW/m2), and commercial sugar (0.04±0.01 mW/m2). Furthermore, a clear relationship was established between power density generating rate and voltage output. Voltages produced were 0.16±0.02 V, 0.13±0.03 V, 0.03±0.01 V, 0.01±0.00 V for YPD medium, pro analysis glucose, commercial glucose, and commercial sugar, respectively in MFC. The weight of biofilm indicated that yeast attachment was significantly more common in YPD medium than in other MFC-operated media. This study discovered that the substrate type in the anodic compartment regulates the formation of anodic biofilm.
The Ozonation Process for Increasing Value Added Tallow of Cow as A Polyol Yoshi, Linda Aliffia; Fitria, Nadya; Albana, Naufal Rozin; Enjarlis, Enjarlis; Wibawa, Agam Duma
INTEK: Jurnal Penelitian Vol 7 No 1 (2020): In Press
Publisher : Politeknik Negeri Ujung Pandang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (738.728 KB) | DOI: 10.31963/intek.v7i1.1604

Abstract

The purpose of this research is to produce polyol, through the ozonation process and to find the best catalysts and solvents for the formation of hydroxyl group. The hydroxyl group is indicator of the formation polyol. The process of making polyols is unsaturated fatty acids of the cow through the process of ozonation, using the solvents of sorbitol and glycerol, as well as catalysts of sulfuric acid and sodium hydroxide. The reaction temperature is run at 50oC and ozone levels are 4.33, 4.795, 5.021, 5.480 grams. The best results used a glycerol solvent, a sodium sulfate catalyst, and a 5.48 gram ozon content.
Pengaruh pH dan Dosis NaOCl terhadap Penurunan Kadar COD dan Klor Bebas pada Limbah Cair Produksi Monomer Vinyl Klorida Ratnawati, Ratnawati; Yoshi, Linda Aliffia; Wibawa, Surya Aji
Jurnal Rekayasa Kimia & Lingkungan Vol 13, No 2 (2018): Jurnal Rekayasa Kimia & Lingkungan (December, 2018)
Publisher : Chemical Engineering Department, Syiah Kuala University, Banda Aceh, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23955/rkl.v13i2.10947

Abstract

Limbah cair dari produksi monomer vinyl klorida merupakan limbah yang mempunyai kandungan Chemical Oxygen Demand (COD) yang tinggi yaitu sekitar 1000 ppm dan Biohemical Oxygen Demand (BOD) sekitar 500 ppm, sedangkan nilai maksimal standar baku mutu air buangan ke badan air adalah 250 ppm untuk COD dan 100 ppm untuk BOD. Penelitian ini bertujuan untuk mempelajari pengaruh pH dan dosis NaOCl terhadap penurunan COD dan kadar klor bebas serta untuk mendapatkan nilai pH dan dosis NaOCl yang optimal. Limbah cair produksi monomer vinyl klorida yang digunakan adalah limbah dari Pabrik X yang berada di Cilegon. Kadar COD yang tinggi disebabkan oleh kandungan senyawa Na(COOH) dalam limbah cair tersebut. Penurunkan nilai COD telah dilakukan dengan penambahan NaOCl yang merupakan salah satu produk dari Pabrik X tersebut sebesar 10 gam/jam pada pH 2, namun hasilnya belum memenuhi persyaratan. Pada penelitian ini digunakan variasi pH pada 2, 5 dan 8 serta dosis NaOCl yang ditambahkan sebesar 10, 20, 30, 40 dan 50 gram/jam dengan laju alir limbah cair yang diolah di unit pengolahan limbah cair tersebut sebesar 20 m3/jam. Parameter yang diukur dalam penelitian ini adalah kadar COD dan kadar klor bebas sebelum dan sesudah proses. Hasil penelitian menunjukkan bahwa pada pH 5 dengan dosis NaOCl 40 dan 50 gram/jam, proses ini memberikan hasil terbaik karena dapat menurunkan kadar COD dari 1034 sampai 190 dan 130 ppm (efisiensi penurunan 82,5 dan 87 %) dengan kadar klor bebas 0,8 dan 1 ppm yang telah memenuhi nilai baku mutu sesuai peraturan pemerintah.
Upaya Penurunan Nilai COD Pada Limbah Tekstil Dan Batik Dengan Penambahan NaOCl Yoshi, Linda Aliffia; Idat, Jessica Ambarwati; Maulidyananda, Galuh; Ratnawati
Al-Ard: Jurnal Teknik Lingkungan Vol. 6 No. 1 (2020): September
Publisher : Department of Environmental engineering, Faculty of Science and Technology, Islamic State University Sunan Ampel Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29080/alard.v6i1.954

Abstract

Batik and textile production produces liquid waste with a COD content above the environmental quality standard between 2,000-12,000 ppm. Efforts to reduce the value of COD are helped by the addition of NaOCl. This study aims to determine the pH and dose of NaOCl against COD reduction. Textile liquid waste used came from factory X while batik liquid waste came from factory Y; both factories are located in South Tangerang. In this study, the pH range, 5, 7, and 9 and NaOCl concentrations were added in 3000, 4000, and 5000 ppm. The study begins with the measurement of the actual COD value in the two wastewater. The best results for batik waste were obtained at pH 5 with the addition of 4000 ppm NaOCl which resulted in a decrease of 93%. Textile liquid waste shows the best results at pH 5 with an additional 5000 ppm NaOCl concentration which can reduce COD by 95%. The final result of the COD value has met the quality standard set by the government which is less than 250 ppm.
Review: Potential of Oil Palm Empty Fruit Bunches Waste to Become an Ultrafiltration Membrane for Clean Water Treatment Linda Aliffia Yoshi; Fauziah Fitri Nurhalizah; Daranova Daranova; Najwa Hariansyah; Enjarlis Enjarlis; Ismojo Ismojo; Sri Handayani
Journal of Bioresources and Environmental Sciences Vol 4, No 2 (2025): August 2025
Publisher : BIORE Scientia Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61435/jbes.2025.19953

Abstract

The potential of oil palm empty fruit bunches (OPEFB) as a raw material for membrane production has not been fully explored. OPEFB waste contains a relatively high cellulose content, a natural polymer that can serve as a precursor for plastic and membrane synthesis. Membranes are semi-permeable barriers commonly employed in applications such as clean water purification and liquid waste treatment. To utilize cellulose from OPEFB, it must first be converted into cellulose acetate (CA) via an acetylation reaction. Cellulose acetate is a biodegradable polymer known for its hydrophilic nature, high chemical stability, and mechanical strength, making it a widely used material in membrane technology. Moreover, CA is suitable as a matrix for developing nanocomposite membranes with enhanced performance characteristics. Membranes are typically fabricated using the phase inversion technique, involving solvents such as acetone or dimethylformamide (DMF). The resulting membrane properties—including morphology, porosity, and chemical interactions—depend on the choice of polymer and additives in the casting solution. Additives such as nano-silica and polyethylene glycol (PEG) are often incorporated to improve tensile strength, increase hydrophilicity, and control pore size distribution. Optimizing the composition ratios of cellulose acetate, solvent, and additives is essential to achieve desirable properties, particularly for ultrafiltration (UF) applications. OPEFB offers promising potential as a sustainable, renewable resource for producing UF membranes, supporting circular economy principles and waste valorization in environmental applications.
Co-Authors Agam Duma Kalista Wibowo Albana, Naufal Rozin Athanasia Amanda Septevani, Athanasia Amanda Daranova Daranova E. Enjarlis Enjarlis Enjarlis Fauziah Fitri Nurhalizah Febrianty Emilia Fitria, Nadya Galuh Maulidyananda I Nyoman Widiasa Idat, Jessica Ambarwati Imam Wicaksono Ismojo Ismojo Jessica Ambarwati Idat Joelianingsih . Marcelinus Christwardana Maulidyananda, Galuh Najwa Hariansyah RATNAWATI Ratnawati Ratnawati Ratnawati Ratnawati Satrio Kuntolaksono Sri Handayani Sri Handayani Surya Aji Wibawa Wibawa, Surya Aji