Vol 5, No 2

Performance Improvement of Sand-Based Batteries using Sea Sand and Metal Waste as an Alternative Energy Storage System

The shift to renewable energy faces the challenge of intermittency, which requires effective Energy Storage Systems (ESS). Sand-Based Thermal Energy Storage (TES) presents a cost-effective and environmentally friendly solution, although it suffers from the low thermal conductivity of sand. This research seeks to enhance the thermal efficacy of sand batteries by incorporating waste iron shavings […]

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Potential of Activated Coal Fly Ash as an Adsorbent Material in Carbon Capture Technology

The rising carbon dioxide (CO₂) emissions from biomass combustion processes have become a central concern in climate change mitigation. This study explores the utilization of coal fly ash as a cost-effective and environmentally friendly adsorbent in carbon capture technology. Thermal activation was applied to fly ash at temperatures of 600°C, 700°C, and 800°C to enhance

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Hybrid Passive Cooling System for Rooftop Photovoltaics with Varying Height Clearances

The increasing adoption of rooftop photovoltaic (PV) systems as a renewable energy source is often hindered by the negative impact of high operating temperatures on their efficiency. To address this, a hybrid passive cooling system offers a promising solution to enhance the power output of PV panels while supporting environmental sustainability. This study investigates the

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Study on the Utilization of Egg Shells as CO2 Adsorbent in the Combustion Process of Empty Palm Fruit Bunches

The problem of carbon dioxide (CO2) emissions from the combustion of biomass, such as empty palm fruit bunches (TKKS), is a significant challenge in climate change mitigation efforts. This research aims to examine the effectiveness of eggshells as a CO2 adsorbent in the combustion process of empty palm fruit bunches, and to analyze the effect

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Implementation of Convolutional Neural Network in Mobile Applications for Solar Panel Crack and Efficiency Prediction

Solar panels, as a renewable energy source, are susceptible to efficiency degradation due to cracks in solar cells. Manual crack detection has many limitations, while the use of specialized tools like electroluminescence imaging is not economical for small-scale users. Therefore, this research aims to develop an image-based automatic detection system using the Convolutional Neural Network

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Enhancing CSR Effectiveness through Financial Literacy: A Moderated Analysis on Corporate Image in PT Arutmin Indonesia Site Asamasam

This study investigates the effect of Corporate Social Responsibility (CSR) on financial literacy with corporate image as a moderating variable, focusing on the community surrounding PT Arutmin Indonesia Site Asam-asam. Drawing on stakeholder theory, the research argues that CSR initiatives can serve as a strategic instrument to enhance community capacity, particularly in financial knowledge and

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The Best Treatment of Snakehead Fish Parts in Albumin and Gelatine Extraction Using a Temperature-Controlled Steamer

Snakehead fish (Channa striata) is known for its high albumin and collagen content, which can be processed into albumin and gelatine compounds widely used in the food, pharmaceutical, and cosmetic industries. This study aims to determine the most effective treatment of different parts of snakehead fish (e.g., flesh, skin, and bones) in the extraction of

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Financial Distress Prediction in Indonesian Infrastructure Companies Using the Cox Proportional Hazard Model

This study investigates the determinants of financial distress in infrastructure companies listed on the Indonesia Stock Exchange (IDX) during 2020–2024 using survival analysis with the Cox proportional hazard model. The analysis focuses on five firm-level indicators: leverage, profitability, firm size, free cash flow, and sales growth. Survival time until financial distress and event status were

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Effective CO₂ Capture from Biomass Flue Gas Using a DEA-Promoted Potassium Carbonate Absorbent in a Packed Column Reactor

This research investigates the effectiveness of a Diethanolamine (DEA) promoted potassium carbonate (K₂CO₃) solution for capturing carbon dioxide (CO₂) from flue gas generated by the carbonization of coconut shells. The study aimed to evaluate the influence of absorption column packing height and absorbent flow rate on CO₂ removal efficiency. The absorption process was conducted in

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