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All Journal Jurnal Periodic Jurusan Kimia UNP HUMANISMA : Journal of Gender Studies
Deliani, Nur Farida
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Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Energy Environmental Science Materials Science & Nanotechnology Social Sciences

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Optimasi Metode Ekstraksi Mikroplastik Polivinil Klorida (PVC) Dengan Wet Peroxide Oxidation (WPO) Deliani, Nur Farida; Dewata, Indang
Periodic Vol 13, No 2 (2024): PERIODIC
Publisher : Departemen Kimia FMIPA UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/periodic.v13i2.125423

Abstract

The increase in plastic production causes an increase in plastic waste in the environment both on land and in waters. Over time, plastic waste will degrade into microplastics in waters. Microplastics in waters are contaminated with organic impurities which can interfere with the identification of microplastics. The method for extracting plastic particles from organic impurities is using wet peroxide oxidation. However, these methods have not been systematically tested and standardized. This research aims to determine the optimum conditions for the extraction method with the addition of wet peroxide oxidation for the identification of PVC microplastics. In this research, a 30% hydrogen peroxide solution was used as an oxidizer and a Fe2+ catalyst as the main ingredient to produce OH radicals which function to oxidize organic impurities and the samples used were PVC microplastics made from grinding PVC plumbing pipes. Determination of optimum conditions was carried out at varying oven temperatures of 70oC, 80 oC, 90 oC, 100oC, dan 110oC, varying concentrations of 0,025 M; 0,05M; 0,075M; 0,1M dan 0,125M and temperature variations at heating 30oC, 45oC, 60oC, 75oC, dan 90oC, as well as testing the optimum extraction method on water samples with water volumes ranging (200, 400, 600, 800, and 1000) mL. The research results showed that the optimum conditions were an oven temperature of 90oC, a Fe catalyst concentration of 0.075M, and a heating temperature of 75oC in the PVC microplastic extraction process resulting in a PVC microplastic mass of 0.3403 grams. Characterization of PVC microplastics was carried out using Primostar 1, FTIR and XRF microscope instruments. Tests using a microscope showed that the form of PVC microplastic was identified, namely fragment form. In the FTIR test, CH2, C-Cl, C-C  peaks were obtained which indicated that the polymer was a type of PVC, apart from that there were N-H bend dan N-H stretching  peaks which indicated the material. The organic impurities are in the form of amine, and in XRF testing the additive elements that make up PVC microplastics are obtained, namely Si, P, Ca, V, Cu, Br, Sr.
GERAKAN EMANSIPASI RUHANA KUDDUS DALAM MEMPERJUANGKAN KESETARAAN PENDIDIKAN PEREMPUAN DI MINANGKABAU Deliani, Nur Farida; Khairat, Nazhiratul; Muslim, Kori Lilie
HUMANISMA : Journal of Gender Studies Vol. 3 No. 2 (2019): December 2019
Publisher : Universitas Islam Negeri Sjech M. Djamil Djambek Bukittinggi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30983/humanisme.v3i2.1097

Abstract

Pada awal abad ke 19 di Minangkabau, perempuan diharuskan untuk mengurus rumah tangga, tidak diizinkan mendapatkan pendidikan dan keterampilan serta kedudukan yang tinggi. Dengan kondisi yang belum beruntung tersebut, maka di kalangan perempuan melakukan pergerakan untuk keluar dari ketertindasan itu. Salah satu pergerakan itu dilakukan oleh Ruhana Kuddus melalui pendidikan perempuan. Untuk mengetahui hal-hal yang mempengaruhi gerakan emansipasi Ruhana Kuddus dalam memperjuangkan kesetaraan pendidikan perempuan di Minangkabau, digunakan metode penelitian sejarah dengan menggunakan langkah-langkah yaitu pengumpulan sumber, yang menjadi sumber primer adalah Surat Kabar Soenting Melajoe, sedangkan sumber sekunder adalah wawancara, buku, jurnal dan data dari internet yang membahas tentang Ruhana Kuddus. Selanjutnya kritik sumber yang terdiri dari kritik internal dan eskternal. Setelah itu sintesis dan penulisan (historiografi). Hasilnya ditemukan yaitu faktor pendorong terdiri dari nilai agama, nilai adat, nilai sosial. Faktor penghambat yaitu perempuan buta huruf, ketatnya aturan adat istiadat, pandangan terhadap perempuan, pemberdayaan perempuan dan kepandaian perempuan
Co-Authors Indang Dewata Khairat, Nazhiratul Muslim, Kori Lilie