Date of Completion

2025

Document Type

Research Project

Degree Name

Grade 12

Keywords

Calamansi Peels, Petroleum Oil

Abstract

Calamansi is a fruit in the Philippines known for its abundance, versatility, and availability. However, discarded calamansi peels contribute to biowaste. These peels possess phytochemical properties, bioactive compounds, and polysaccharides that can be utilized as adsorbents for oil treatment. This study utilized pulverized calamansi peels as an oil sorbent for oil-water solutions containing used engine oil, diesel, and gasoline, serving as a sustainable and cost-effective solution for oil removal. For each type of oil, volumes of 1.25 mL, 2.5 mL, and 3.75 mL were tested, with 0.5g of calamansi sorbent submerged for 25 minutes in each. The experiment yielded the highest average sorption capacity of -0.667 for gasoline at an oil concentration of 1.25 mL, -0.187 for diesel at 3.75 mL, and 1.267 for used engine oil at 3.75 mL. The findings indicated that calamansi peels exhibited both positive and negative oil sorption capacities depending on the type of petroleum oil. Specifically, the sorbent was most effective with used engine oil because it observed the highest sorption capacity. The study highlights the potential for using calamansi peels as an eco-friendly and sustainable solution for oil spill remediation. These results suggest that further exploration of calamansi peels as oil sorbents could enhance the practical applications of this biodegradable sorbent.

First Advisor

Pauline L. Cueno, LPT, MST

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