PEROMBAKAN ZAT WARNA REAKTIF AZO MENGGUNAKAN KONSORSIUM BAKTERI DARI LUMPUR LIMBAH TEKSTIL

Rabu, 4 Juli 2012 pukul 8:15 pm | Ditulis dalam Jurnal, Jurnal Penelitian dan Pengembangan Sains & Humaniora | 7 Komentar
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ISSN 1979-7095 Jurnal Penelitian dan Pengembangan Sains & Humaniora
Volume 2, Nomor 3, Desember 2008

Penulis:

I Dewa Ketut Sastrawidana (Jurusan Pendidikan Kimia)
FMIPA Undiksha

Abstrak:

Penelitian ini bertujuan mengkaji efisiensi perombakan zat warna reaktif azo menggunakan konsorsium bakteri dan kemungkinan penerapannya di industri pencelupan tekstil. Konsorsium bakteri yang digunakan berasal dari lumpur tempat penampungan limbah tekstil sedangkan zat warna reaktif azo yang dirombak adalah remazol yellow, remazol red, remazol black dan remazol blue. Kultivasi dilakukan pada kondisi anaerobik dan aerobik. Konsorsium bakteri hasil seleksi diuji kemampuan perombakannya terhadap zat warna reaktif azo pada variasi kondisi pH (5-9), konsentrasi glukosa (0-4 g/L), konsentrasi zat warna (50-400 mg/L), dan lama waktu inkubasi (1-10 hari). Konsentrasi zat warna sebelum dan setelah perombakan diukur menggunakan spektrofotometer UV-Vis. Hasil penelitian menunjukkan bahwa perombakan zat warna reaktif azo menggunakan konsorsium bakteri berlangsung efektif dan efisien pada kondisi anaerobik dibandingkan pada kondisi aerobik. Perombakan 200 mg/L zat warna reaktif azo pada kondisi anaerobik berlangsung optimal pada pH 7-8, penambahan glukosa 2-3 g/L dan lama waktu tinggal 5 hari. Efisiensi perombakan 200 mg/L zat warna remazol yellow, remazol red, remazol black dan remazol blue selang waktu perombakan 5 hari secara berturut-turut adalah 92,38%, 93,43%, 93,00%, dan 88,20%. Berdasarkan hasil penelitian ini, pemanfaatan konsorsium bakteri dari lumpur limbah tekstil potensial dikembangkan dan digunakan untuk pengolahan limbah cair di industri pencelupan tekstil.

Kata-kata kunci: zat warna azo; konsorsium bakteri; biodegradasi

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