Date of Publication

12-2-2025

Document Type

Bachelor's Thesis

Degree Name

Bachelor of Science in Chemistry

Subject Categories

Chemistry

College

College of Science

Department/Unit

Chemistry

Thesis Advisor

Jose Paolo O. Bantang

Defense Panel Chair

Lourdes P. Guidote

Defense Panel Member

Eiza S. Florentino

Abstract (English)

Wastewater contaminated with heavy metals presents severe environmental and health hazards. Common sources include industrial discharges, mining activities, and agricultural runoff. These pollutants can contaminate water supplies, harming aquatic life and posing risks to human health through bioaccumulation and food chain contamination. Addressing heavy metal pollution in wastewater is crucial for protecting ecosystems and ensuring safe water quality. Conventional remediation methods are often limited by low efficiency or high cost.
A novel polymeric material that is cost-effective was developed through the inverse vulcanization of corn oil, specifically tested for cadmium and lead ion adsorption. This method utilizes two abundant by-products or waste materials, sulfur, and oil, thus supporting green chemistry principles. Highlights of the study include the optimization and characterization of the polymer using FTIR, SEM- EDX, TGA, and DSC. Evaluation of Cd2+and Pb2+ adsorption capacity and efficiency was evaluated using AAS.
Results showed that polysulfides with 60/40 and 80/20 sulfur-to-corn oil ratios showed the highest removal efficiencies for Cd2+ and Pb2+, respectively. Kinetic studies followed a pseudo-first-order model, suggesting a physisorption process. These findings demonstrate that inverse vulcanization of corn oil yields an effective and thermally stable adsorbent for heavy metal remediation.

Abstract Format

html

Abstract (Filipino)

Ang kontaminadong tubig na may heavy metals ay nagdudulot ng seryosong panganib sa kapaligiran at kalusugan ng tao. Kadalasang nagmumula ito sa mga industriya, minahan, at agrikultura. Ang mga polutant na ito ay maaaring magkontamina ng mga pinagkukunan ng tubig, at magdulot ng panganib sa mga organismong sa tubig at tao sa pamamagitan ng bioaccumulation at kontaminasyon ng food chain. Maraming tradisyunal na paraan ng remediasyon ngunit karamihan sa mga ito ay may mababang bisa o may kaakibat na mahal na gastusin.

Isinagawa ang pagbuo ng isang epektibo at abot-kayang polimer sa pamamagitan ng inverse vulcanization ng mantika ng mais, na partikular na sinuri para sa adsorpsyon ng kadmyum (Cd2+) at tingga (Pb2+) ions. Ginamit sa pamamaraang ito ang dalawang saganang by-product—asupre at mantika—na umaayon sa mga prinsipyo ng green chemistry. Kabilang sa mga pangunahing bahagi ng pag-aaral ang optimizasyon at characterization ng polymer gamit ang FTIR, SEM-EDX, TGA, at DSC. Sinuri rin ang kakayahan at bisa ng polymer sa pag-adsorb ng Cd2+ at Pb2+ gamit ang AAS.

Ipinakita ng mga resulta na ang polysulfido na may 60/40 at 80/20 sulfur- to-corn oil ratio ang may pinakamataas na bisa sa pagtanggal ng Cd2+ at Pb2+, ayon sa pagkakabanggit. Ipinakita ng kinetic studies na sinusunod ng proseso ang pseudo-first-order model, na nagpapahiwatig ng physisorption na uri ng adsorpsyon. Ipinapakita ng mga natuklasan na ang inverse vulcanization ng corn oil ay nakalilikha ng isang epektibo at may mataas na thermal stability na adsorbent para sa remediasyon ng mabibigat na metal.

Abstract Format

html

Language

English

Format

Electronic

Keywords

Corn oil; Vulcanization; Adsorption

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Embargo Period

12-2-2026

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Available for download on Wednesday, December 02, 2026

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