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Equilibrium
SINTA 5
ISSN 2622-3430 · Universitas Sebelas Maret · 118 articles in the index
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Journal Article
Calcination Temperature Effect on Characteristic Properties of Na2/3[Fe1/2Mn1/2]O2 Synthesized by Sol-Gel Reaction
Abstract. Recently, Na2/3[Fe1/2Mn1/2]O2 has received attention as a potential candidate material for cathode sodium-ion batteries. However, this material was synthesized by a solid-state process, resulting in larger particle size and nonuniform morphology. The larger particle size will sluggish the…
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Journal Article
Utilization of Tofu Liquid Waste as Liquid Organic Fertilizer Using the Fermentation Method with Activator Effective Microorganisms 4 (EM-4): A Review
Liquid organic fertilizer is organic fertilizer in liquid form which is partly or wholly derived from organic compounds such as plant, animal and industrial residues, in solid or liquid form. The nutrients contained in it are in the form of a very fine solution so that it is easily absorbed by…
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Journal Article
Optimizing Bioky Performance Using Super Small Vessel in Wastewater Treatment Installation at PT. X in Klaten
One of the causes of environmental pollution is liquid waste generated by industries, especially the printing industry. PT Macanan Jaya Cemerlang is one of the printing industries producing liquid waste that does not meet the quality standards. The purpose of this research is to optimize the…
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Journal Article
Optimization of Bio-lubricant Produced from Non-edible Jatropha curcas Seed Oil
This paper presents the production and optimization of a bio-lubricant derived from non-edible Jatropha plant seed oil. Plant oil-based lubricants offer significant environmental benefits and are derived from renewable sources, making them an attractive alternative to conventional lubricants. They…
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Journal Article
Glucose Syrup from Purple Sweet Potatoes (Ipomoea batatas L. Poir) using Acid Hydrolysis Method
Abstract. The making of glucose syrup from purple sweet potatoes is motivated by the high demand for alternative sugar in Indonesia. Through the processes that have been carried out and the results of previous studies, the potential of purple sweet potatoes to be processed into glucose syrup has…
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Journal Article
Green Energy from Palm Kernel Shell Gasification – dual fuel engine performance analysis
Electricity generation in Indonesia is mainly generated from non-renewable fuels. Based on these problems, this research utilizes palm kernel shells to be converted into producer gas as secondary fuel for a 5 kW diesel engine. Through a gasification process equipped with a cooling and gas cleaning…
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Journal Article
Solid-Liquid Equilibrium Study of Binary System Saturated Fatty Acid in Short Chain Alcohols
Unsaturated fatty acids are potential to be used for preventing degenerative diseases and developing brain function in babies. Separation of unsaturated fatty acids from saturated fatty acids efficiently achieved by urea complexation fractionation method. It is considered to be the simplest, most…
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Journal Article
Characterization and Combustion Kinetics of Binderless and Bindered Dry Cow Dung Bio-Pellets
The effect of molasses addition as a binder in the manufacturing of cow dung bio-pellets on their characteristics and combustion kinetics have been studied. The bio-pellets characterization included the physical and mechanical properties as well as the proximate analysis and calorific values…
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Journal Article
Effectiveness of Activated Carbon from Jackfruit Skin for The Heavy Metal Lead (Pb) Adsorption Using The Langmuir and Freundlich Equations
Activated carbon is a commonly used medium for adsorption to combat environmental pollution in both water and air. It is produced from plant or plantation waste containing carbon. Jackfruit skin, often considered as plantation waste, contains lignocellulosic compounds and has the potential to be…
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Journal Article
Tenebrio molitor Larvae Feeding Strategy to Degrade Polypropylene Components from Disposable Masks
The surge in mask consumption during the COVID-19 pandemic led to the widespread use of disposable polypropylene masks for protection. However, the accumulation of used masks poses environmental challenges due to the slow degradation of polypropylene. Here, we investigate the potential of Tenebrio…
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Journal Article
The Influence of Aqua Regia Usage in the Leaching and Extraction Process of Silica from Coal Fly Ash
Waste from coal-burning power stations and other sectors that rely on coal as a source of energy is one of the environmental issues. Fly ash obtained from burning coal causes pollution in the surrounding environment. Subsequently, a great deal of study was conducted on the application of flying ash…
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Journal Article
The Effect of HCl Activator on PET Adsorbent to Reduce Phosphate Content in Laundry Waste
Plastic waste is waste that cannot be decomposed so it will cause serious problems to the environment. The National Waste Management Information System (SIPSN) reported that in 2020 plastic waste was found to be 17.2% of the total waste collected. Several types of plastic can become porous charcoal…
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Journal Article
Simulation of Gas Sweetening Process using Extended NRTL and Stages Efficiency as Modeling Approach
Gas sweetening is a process to remove CO₂ and H₂S from natural gas. The current established technology is by using Amine contactor where the solvent used is in form of Amine solution. To simulate the effect of different solvent, electrolyte-NRTL is used to model the equilibrium, and mass…
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Journal Article
Producing Gel With Various Ingredients: a Review
Unhealthy fat choices in diets are linked to obesity and other health problems. The food industry faces a challenge to develop low-fat products that maintain desirable textures and functionalities. Food gels, semi-solid materials formed by small molecules or large organic molecules that can hold…
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Journal Article
Optimization of Heat Transfer Area and Steam Requirement in Multiple Effects Evaporator for Concentration of Juice in Sugar Factory
Abstract. In maintaining the existence of sugar factories that are still actively operating in Indonesia, efforts should be made to intensify sugar production and/or extensify sugarcane plantations. In terms of the intensification of the process, it is necessary to periodically evaluate the…
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Journal Article
Encapsulation of Rice Bran Oil (RBO) by Complex Coacervation Using Glutaraldehyde as Crosslinking Agent
Abstract. Rice bran is a significant by-product of the processing of rice, and rice bran oil (RBO) can be extracted from it to provide a very valuable product. It has a high smoke point but is less stable in the heating process. Further research is carried out to increase the stability of Rice Bran…
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Journal Article
Effect of Acrylamide And Potassium Peroxodisulphate on The Quality of Bead Gel Based on Cassava Bagasse-Carrageenan Using Microwave Grafting Method
ABSTRACT. Hydrogels are widely used for drug delivery systems, immuno-chemotherapy applications, efficient use of water, preventing dry soil, and increasing soil infiltration. Generally, hydrogels are derived from synthetic polymers which is non-biodegradable and toxic. Cassava bagasse is an…
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Journal Article
Regeneration of Spent Nickel Catalyst via Hydrometallurgical Method
Abstract. Nickel Catalyst is one of the common catalysts found in chemical industries. However, this catalyst has a limited lifetime indicated by having performance or activity drop so it is potentially become dangerous waste if the handling is not proper. The spent nickel catalyst needs to be…
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Journal Article
Response Surface Methodology-Based Parameter Optimization of Candlenut Seeds Extraction (Aleurites moluccana Willd)
Abstract. Aleurites moluccana Willd, known candlenut plant, has the potential to be used for vegetable oil, pharmacological purposes, and biofuel. However, there is a lack of knowledge on the optimal extraction conditions for this extraction. The current study aimed to use response surface…
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Journal Article
Biogas Purification by Adsorption Method Using Activated Carbon and Zeolite Adsorbents
Abstract. Biogas is an alternative energy that is formed from the fermentation of organic matter in gaseous form. Biogas consists of several gas mixtures with the main components methane (CH4) and carbon dioxide (CO2) with a small amount of steam. Biogas is an alternative technology that produces…