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All Journal JURNAL KIMIA SAINS DAN APLIKASI Journal of Innovative and Creativity
Halimah Fahri
Kimia UMRAH
Chemical Engineering, Chemistry & Bioengineering Chemistry Education Engineering Languange, Linguistic, Communication & Media Mathematics Social Sciences Other

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Synthesis of Molecularly Imprinted Polymers with Magnetite Cores for Ibuprofen Adsorption Halimah Fahri; Muhammad Ali Zulfikar; Muhammad Yudhistira Azis
Jurnal Kimia Sains dan Aplikasi Vol 27, No 1 (2024): Volume 27 Issue 1 Year 2024
Publisher : Chemistry Department, Faculty of Sciences and Mathematics, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jksa.27.1.28-34

Abstract

Ibuprofen (IBP) is a pollutant that is widely found in aquatic environments due to pharmaceutical waste and the metabolic results of humans who consume the drug. These compounds can cause damage to aquatic ecosystems, genotoxicity, and aquatic toxicity and are harmful to human health. This study aims to selectively adsorb IBP using magnetic molecularly imprinted polymers (MMIPs) synthesized from ibuprofen (IBP) as a template molecule, methacrylic acid (MAA) as a functional monomer, and divinylbenzene (DVB) as a crosslinker with a mole ratio of 1:4:20 in acetonitrile porogen solvent using a bulk polymerization method. Fe3O4 nanoparticles and MMIPs were characterized using X-ray diffraction (XRD), Fourier Transform Infra-Red (FTIR), and Scanning Electron Microscope (SEM). IBP adsorption reached optimum conditions at pH 3 with a contact time of 90 minutes and a mass of 25 mg of adsorbent. The adsorption performance of MMIPs for IBP was evaluated by adsorption isotherms and adsorption kinetics. Adsorption of IBP by MMIPs followed the Langmuir adsorption isotherm model with an adsorption capacity of 227.24 mg/g. Kinetic studies showed that the adsorption process followed a pseudo-second-order adsorption kinetic model. MMIPs can adsorb IBP selectively even in the presence of interfering compounds, are easily separated from the solution, and can be used repeatedly with good adsorption ability. Hence, it is efficient and promising for removing IBP from aqueous media.
Analisis Distribusi Spasial dan Keterlayanan Fasilitas Bank Sampah di Kota Tanjungpinang Zuleriwati A.S; Nefriwati Hilmi; Aditia Ayu Rahma Nabila; Meylia Vivi Putri; Halimah Fahri
Journal of Innovative and Creativity Vol. 5 No. 3 (2025)
Publisher : Fakultas Ilmu Pendidikan Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/joecy.v5i3.4756

Abstract

This study aims to analyze the spatial distribution of waste banks in Tanjungpinang City and to identify gap areas or residential zones that remain underserved by these facilities. A quantitative descriptive approach was employed, utilizing spatial analysis based on Geographic Information Systems (GIS). The dataset consisted of waste bank coordinate points, administrative boundaries, residential zoning maps, and population density data. Analytical procedures included buffer analysis to assess service coverage within a 300–500 meter radius, overlay analysis to identify serviced and unserviced residential areas, and a gap area assessment to quantify disparities across sub-districts. The findings indicate that the spatial distribution of waste banks in Tanjungpinang is uneven, with the highest concentration located in Bukit Bestari (25 units) and Tanjungpinang Timur (24 units), while Tanjungpinang Barat and Tanjungpinang Kota have significantly fewer facilities. Buffer analysis revealed that Bukit Bestari achieved the highest service coverage at 70.17%, followed by Tanjungpinang Kota (52.54%), Tanjungpinang Barat (49.07%), and Tanjungpinang Timur (46.47%). Overall, only 52.99% of the total 7.68 km² of residential areas are currently served by waste bank facilities. These results highlight spatial inequalities in access to waste management services, particularly in peripheral and densely populated neighborhoods. The study concludes that strategic expansion and equitable redistribution of waste bank facilities are necessary to promote more effective, inclusive, and sustainable waste management practices in Tanjungpinang City
Co-Authors Meylia Vivi Putri Muhammad Ali Zulfikar Muhammad Yudhistira Azis, Muhammad Yudhistira Nabila, Aditia Ayu Rahma Nefriwati Hilmi Zuleriwati A.S