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CHEESA
ISSN 2614-8757 · Universitas PGRI Madiun · 101 artikel di indeks
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Artikel Jurnal
Hexavalent Chromium Reduction of Artificial Waste Using Resin Immobilized Photocatalyst TiO2
Photocatalysis is a process that can be used to reduce hexavalent chromium in wastewater. Therefore, this study aimed to analyze the effect of a semiconductor in the form of Resin Immobilized Photocatalyst (RIP)-TiO2 on the reduction of Cr (VI), as well as the effect of pH and catalyst mass. In the…
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Artikel Jurnal
Thermoplastic Elastomers of Polystyrene-Based Reinforced with Natural Rubber and Carbon Filler from Oil Palm Empty Fruit Bunches
Polystyrene (PS) has limited resistance to extreme temperatures, often becoming soft, brittle, and losing its elasticity. To address these limitations, the material was modified by adding Natural Rubber (NR) and oil palm empty fruit bunch (OPEFB) carbon filler. Therefore, this research aimed to…
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Artikel Jurnal
Potato Peel Starch Bioplastics Reinforced with Microcrystalline Cellulose, PVA, and Chitosan: Mechanical, Thermal, and Antibacterial Properties
The increasing accumulation of petroleum-based plastic waste has led to the development of biodegradable packaging materials from renewable agro-industrial resources. Therefore, this study aims to synthesize biodegradable potato peel starch/polyvinyl alcohol (PPS/PVA) blend bioplastic films…
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Artikel Jurnal
Hybrid Paper Membrane Based on Abaca (Musa textilis) Fibers and Rice Husk Ash Silica Using Citric Acid as a Cross-Linking Agent for the Removal of Dyes and Heavy Metals
The pollution from wastewater containing synthetic dyes and heavy metals is a serious environmental issue in Indonesia. The situation is associated with the lack of locally sourced membranes to simultaneously integrate physical filtration and chemical adsorption mechanisms (filtro-adsorption)…
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Artikel Jurnal
Characteristics and Thermal Stability of Biobriquettes Sub-Bituminous Coal and Coconut Shell (Cocos nucifera) Mixture
Low-grade coal, such as sub-bituminous, is characterized by low calorific value. In this context, combining coal (C) with coconut shell (CS) biomass can upgrade the quality. Therefore, this study aims to analyze the effect of feed ratio and carbonization temperature on improving the biobriquette…
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Artikel Jurnal
Pressure Effect on Turbidity, pH, Lead Content, and Coliform during the Demineralization Process of Brackish Water
Brackish water is a mixture of freshwater and seawater and typically exhibits intermediate physicochemical characteristics. Cilacap City is located in a coastal area, resulting in the mixing of freshwater from river systems with seawater intrusion, thereby producing brackish water with relatively…
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Artikel Jurnal
Biofoam Cassava Starch and Sugarcane Bagasse Cellulose with the Addition of Polyvinyl Alcohol and Chitosan
The persistence of non-biodegradable styrofoam waste is contributing to the development of sustainable packaging materials from renewable resources, such as biofoam from natural biopolymers. Therefore, this study aimed to develop biofoam based on cassava starch and cellulose isolated from sugarcane…
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Artikel Jurnal
Green Synthesis of CuO-Doped Fe₃O₄ for Degradation of Crystal Violet Dye: RSM-Based Optimization
The limitations of CuO photocatalyst include high electron–hole recombination and low charge-transfer efficiency. In this context, doping with Fe3O4 is used to form a heterojunction, which enhances charge separation, increases electron transfer, and imparts magnetic properties for easy separation…
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Artikel Jurnal
Effect of Flow Rate on Hexavalent Chromium Reduction in Electroplating Wastewater Using TiO2 Immobilized Resin
This study aims to analyze the effect of flow rate on the reduction of hexavalent chromium (Cr6+) in electroplating wastewater treated with a TiO2-immobilized resin in a continuous fixed-bed reactor. The electroplating wastewater, characterized by Cr6+, was treated with RIPT-TiO2 functioning as a…
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Artikel Jurnal
Catalyst Losses and Air Flow Rate Effect on Cyclone Efficiency at Residue Fluidized Catalytic Cracking Unit
Residue Fluidized Catalytic Cracking Unit (RFCCU) in the oil and gas industry is equipped with a regenerator that uses a cyclone to separate solid catalyst from reaction gases. Oxidation gases rise to the top of the regenerator before entering the cyclone stage. The cyclone inlet velocity depends…
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Artikel Jurnal
Isotherm and Kinetics Adsorption of Ammonium using Cocopeat Biochar Activated
Nitrogen recovery from wastewater is capable of preventing eutrophication, offering economic benefits, and reducing carbon footprint from synthetic fertilizer production. Biochar has been explored as adsorbent for ammonium (NH₄⁺) removal. Therefore, this study aimed to investigate the potential of…
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Artikel Jurnal
Treatment of Textile Industrial Wastewater using Membrane Technology: A Review
Textile industry wastewater is a very complex pollutant-containing waste with high dye intensity, requiring proper and appropriate treatment. Membrane technology is one of the appropriate methods for treating textile wastewater due to several advantages such as environmentally friendly and…
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Artikel Jurnal
DFT-Based Molecular Analysis of Imidazole Derivatives as Additives to Enhance Ionic Conductivity in Polymer Electrolyte Membranes
The demand for efficient and stable lithium-ion batteries has driven research on advanced polymer electrolyte membranes (PEM) with improved ionic conductivity. This study investigated imidazole and its derivatives as additives in PEM to enhance battery performance. Using Density Functional Theory…
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Artikel Jurnal
Modeling and Simulation of Biomass Gasification with Aspen Plus for Different Types of Local Biomass from Riau Province
Gasification is a promising technology for electrical energy generation systems in palm oil mills. The syngas components, namely CH4, H2, and CO, produced from gasification can be used as fuel to produce steam, which will be applied in turbine generators to produce electricity. Therefore, this…
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Artikel Jurnal
Coffee Waste as a Potential Adsorbent for Peat Water Treatment
Peat water is characterized by high acidity, turbidity, and poor sensory qualities, which limit its usability. This study evaluated the effectiveness of thermally activated coffee waste adsorbent (CWA) for peat water treatment. CWA was prepared by heating coffee waste at 250°C, followed by washing…
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Artikel Jurnal
Reducing Silica Levels in WTP PLTGU X Wastewater using Rice Husk Filter Membranes
During the water demineralization process, silica content is increased due to the failure of the chemical reagent. This shows the need to perform a blowdown action to reduce silica content in the water. Therefore, this research aimed to determine the effectiveness of silica reduction in the Water…
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Artikel Jurnal
Fluid Flow Rates Regression in Tank Level Control
The industrial production process is closely related to control systems, including level control. This is often used to ensure that fluid in the tank is available in the appropriate amount at each stage of the process. The process typically uses an automatic control system such as a Proportional…
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Artikel Jurnal
Crescentia cujete L. Extract as an Substitution Alternative of Oxybenzone in Sunscreen Cream
The use of natural ingredients in sunscreen products is increasingly developed due to safety and eco-friendliness compared to synthetic agents. Therefore, this study aimed to evaluate the physical properties and SPF values of cream formulations containing leaf and fruit extract of Crescentia cujete…
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Artikel Jurnal
Comparative Study of Maceration and Ultrasonic Techniques in Coffee Oil Extraction Based on Energy Evaluation and Mass Transfer Value
Coffee is a significant commodity trend, with numerous coffee shops rapidly established in Indonesia. The development of this industry has led to an increased discharge of coffee grounds into the environment. The discarded grounds contain oil which can be optimized using various methods and serve…
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Artikel Jurnal
Activated Carbon/MnO2 Composite as Uranium Adsorbent in Solution
This research aimed to make an adsorbent from activated carbon/MnO2 (AC/MnO2) composite and examine its characteristics, adsorption capacity, and mechanism for uranyl ions. Carbon was made from Oil Palm Empty Fruit Bunches (OPEFB) through sodium acetate's carbonization and activation processes. The…