Chemistry Department, Faculty of Sciences and Mathematics, Diponegoro University, Indonesia
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@article{JKSA3546, author = {Didik Widodo and Gunawan Gunawan and Wahyu Kristanto}, title = {Elektroremediasi Perairan Tercemar: Penggunaan Grafit pada Elektrodekolorisasi Larutan Remazol Black B}, journal = {Jurnal Kimia Sains dan Aplikasi}, volume = {11}, number = {2}, year = {2008}, keywords = {elektrodekolorisasi; elektrolisis; remazol black B; elektroda grafit; spektrometri UV-Visibel}, abstract = {Telah dilakukan penelitian dekolorisasi larutan zat warna—remazol black B—dengan metode elektrolisis (elektrodekolorisasi) menggunakan anoda grafit. Pada metode ini, bahan elektroda merupakan faktor penting pada keberhasilan proses. Pemilihan grafit sebagai elektroda dilakukan dengan mempertimbangkan sifat bahan ini dalam sistem eletrolisis, kontuktif, stabil (inert) dan mudah diperoleh. Penelitian ini bertujuan untuk mendekolorisasi zat warna Remazol Black B dengan pendekatan elektrolisis menggunakan elektroda grafit. Metode ini dilakukan dengan mengelektrolisis larutan remazol black B sebanyak 50 mL dengan potensial 6,5 V selama 120 menit. Setelah elektrolisis larutan sampel dianalisis dengan spektrometer UV-Visibel. Untuk memperoleh data awal, elektrolisis dilakukan terhadap larutan sampel dengan variasi potensial aplikasi dan variasi waktu elektrolisis hingga 120 menit. Pada variasi waktu tersebut, dilakukan pencatatan arus yang mengalir dan pengujian tingkat pengurangan kepekatan zat warna dengan Spektrometer UV-Visibel. Sebagai pembanding dan untuk memperoleh daerah kerja dilakukan juga elektrolisis terhadap sistem pelarut (akuades yang mengandung Na2SO4 berlebih). Data penelitian menunjukkan bahwa elektrolisis dengan penggunaan grafit sebagai anoda pada elektrodekolorisasi larutan remazol black B telah berhasil menghilangkan warna dengan parameter intensitas hingga 97,09 %. Penurunan intensitas ini menunjukkan bahwa dekolorisasi larutan zat warna remazol black B telah berlangsung. Elektrodekolorisasi ini disebabkan oleh proses destruksi oksidatif (elektrodestruksi) remazol black B menjadi molekul-molekul yang lebih sederhana. Produk elekrodestruksi diharapkan lebih ramah terhadap lingkungan dibandingkan bahan pencemar sebelum elektrodekolorisasi, sebagaimana diindikasikan dari spektra UV-Vis larutan setelah elektrolisis.Kata Kunci: elektrodekolorisasi, elektrolisis, remazol black B, elektroda grafit, spektrometri UV-Visibel}, issn = {2597-9914}, pages = {34--37} doi = {10.14710/jksa.11.2.34-37}, url = {https://ejournal.undip.ac.id/index.php/ksa/article/view/3546} }
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