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<http://eprints.uny.ac.id/id/eprint/42894> <http://purl.org/dc/terms/title> "EFEKTIVITAS JENIS KOAGULAN DAN DOSIS KOAGULAN TEHADAP\r\nPENURUNAN KADAR KROMIUM LIMBAH PEYAMAKAN KULIT"^^<http://www.w3.org/2001/XMLSchema#string> .
<http://eprints.uny.ac.id/id/eprint/42894> <http://purl.org/ontology/bibo/abstract> "Tujuan penelitian ini ialah: 1) Menentukan koagulan terefektif untuk\r\nmengkoagulasi ion logam kromium; 2) Menentukan pH koagulan terefektif untuk\r\nmengkoagulasi ion logam kromium; dan 3) Menentukan dosis koagulan terefektif\r\nuntuk mengkoagulasi ion logam kromium.\r\nPenelitian dilakukan dengan mencampurkan larutan koagulan dengan\r\nsampel limbah kromium. Variabel bebas yang digunakan pada penelitian ini ialah\r\njenis koagulan, pH, dan dosis koagulan. Koagulan yang digunakan aluminium\r\nsulfat, besi(II) sulfat dan poly aluminium sulfat (PAC). Pada penentuan koagulan\r\nterefektif, pH diatur berturut-turut untuk aluminium sulfat, PAC, dan besi(II)\r\nsulfat ialah 6,8,dan 10. pH tersebut didapatkan berdasarkan studi pustaka.\r\nSelanjutnya, koagulan terefektif ditentukan pH terefektif koagulasi. Variasi pH\r\nyang digunakan ialah 8,9,dan 10. Terakhir, koagulan terefektif dan pH terefektif\r\nditentukan dosis koagulan terefektif dalam koagulasi. Variasi dosis koagulan yang\r\ndigunakan ialah 250ppm, 300ppm, 350ppm, 400ppm, 450ppm, dan 500ppm.\r\nEfektivitas koagulasi pada penentuan koagulan terefektif ialah: aluminium\r\nsulfat 96,87%; PAC 98,37%;dan besi(II) sulfat 99,4%. Besi(II) sulfat merupakan\r\nkoagulan terefektif. Efektivitas koagulasi pada penentuan pH terefektif besi(II)\r\nsulfat ialah: pH 8 90,42%; pH 9 97,47%; dan pH 10 96,61%. Efektivitas koagulasi\r\npada penentuan dosis koagulan terefektif besi(II) sulfat ialah: 250ppm 95,58%;\r\n300ppm 96,49%; 350ppm 97,22%; 400ppm 97,95%; 450ppm 100%; dan 500ppm\r\n100%."^^<http://www.w3.org/2001/XMLSchema#string> .
<http://eprints.uny.ac.id/id/eprint/42894> <http://purl.org/dc/terms/date> "2016-09-30" .
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