Improving the Environmental Performance of Palm Biodiesel via AgNO₃-Assisted Removal of Polyunsaturated Fatty Acids

Leuser Journal of Environmental Studies, Journal Year: 2025, Volume and Issue: 3(1), P. 36 - 43

Published: April 24, 2025

Indonesian biodiesel products commonly exhibit low oxidative stability and high cloud points, which limit their performance widespread use. These drawbacks are primarily due to the content of polyunsaturated fatty acids (PUFAs) in acid methyl ester (FAME) mixture that constitutes biodiesel. A more suitable composition includes higher proportions saturated monounsaturated acids, offer better combustion properties, cetane numbers, greater resistance degradation. In contrast, PUFAs promote oxidation reactions, resulting fuel instability, increased sludge formation, emissions unburned hydrocarbons, negatively impacting both engine environment.This study investigates use silver nitrate (AgNO₃) as a selective extraction agent remove from palm oil-derived FAME. The goal is identify most effective biodiesel-to-AgNO₃ volume ratio for separating fractions unsaturated ones, order produce stable environmentally friendly Experimental results show 1:2 significantly reduces iodine number, 57.22 47.38 g I₂/100 sample, indicating decrease compounds. Furthermore, improved 11.18 hours 11.69 after extraction. removal not only improves fuel's storage but also enhances its environmental profile. More burns completely, reducing particulate matter greenhouse gases, contributing cleaner air lower impact. Thus, PUFA using AgNO₃ presents promising approach improving sustainability palm-based fuels.

Language: Английский

Innovation and Carbon Emissions: A Southeast Asian Perspective

Ekonomikalia Journal of Economics, Journal Year: 2025, Volume and Issue: 3(1), P. 15 - 32

Published: April 4, 2025

In an era where sustainable development is paramount, understanding the relationship between innovation and environmental impact has become increasingly critical. As Southeast Asian (SEA) economies strive to transition toward more knowledge-based technology-driven growth, it crucial assess whether fosters sustainability or exacerbates degradation. This study examines of ecosystem on CO2 emissions in selected SEA countries, utilizing various metrics from Global Innovation Index (GII) grouped into five categories: institutions, human capital research, infrastructure, market sophistication, creative outputs. By employing Generalized Linear Models (GLMs) conducting robustness checks with Robust Least Squares (RLS), reveals that all GII categories significantly emissions. However, findings indicate this positive, meaning landscape continues contribute rising The country-specific analysis also confirms most are still not environmentally friendly. evidence underscores need for policymakers countries prioritize frameworks promote adoption inclusive green technologies practices mitigate adverse effects

Language: Английский