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      Formulasi Imobilisasi Kultur Bakteri Campuran Menggunakan Ca-Bentonit untuk Degradasi Malam pada Limbah Batik

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      Date
      2025
      Author
      Ahmad, Lasya Fauzia
      Wahdi, Emil
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      Abstract
      Limbah batik mengandung berbagai polutan berbahaya seperti logam berat, padatan tersuspensi, zat warna, dan senyawa malam yang berpotensi mencemari lingkungan. Penelitian ini bertujuan membuat formulasi imobilisasi bakteri campuran menggunakan Ca-Bentonit untuk degradasi malam pada limbah batik. Tahapan penelitian meliputi: (1) preparasi media dan isolasi bakteri, (2) optimasi dan karakterisasi Ca-Bentonit, (3) formulasi produk imobilisasi, serta (4) uji efektivitas pada media sintetik dan limbah batik dengan variasi konsentrasi malam (5% dan 10% v/v) dan waktu inkubasi (7 dan 14 hari). Hasil penelitian menunjukkan bahwa analisis SEM dan FTIR mengkonfirmasi terjadinya perubahan morfologi permukaan dan pergeseran gugus fungsi, mengindikasikan proses degradasi yang efektif. Hal tersebut dibuktikan selama inkubasi 14 hari memberikan penurunan signifikan nilai BOD (51,8%) dan COD (54,1%) dibanding kontrol. Formulasi imobilisasi bakteri campuran berbasis Ca-bentonit menunjukkan potensi yang stabil dalam mendegradasi malam pada limbah batik, ditunjukkan melalui aktivitas enzimatik, perubahan morfologi permukaan, serta penurunan kadar BOD dan COD dibandingkan kontrol.
       
      Batik waste contains various hazardous pollutants such as heavy metals, suspended solids, dyes, and wax compounds that have the potential to pollute the environment. This study aims to create a mixed bacterial immobilization formulation using Ca-bentonite for wax degradation in batik waste. The research stages include (1) media preparation and bacterial isolation, (2) optimization and characterization of Ca-Bentonite, (3) immobilization product formulation, and (4) effectiveness testing on synthetic media and batik waste with varying wax concentrations (5% and 10% v/v) and incubation times (7 and 14 days). The results showed that SEM and FTIR analyses confirmed changes in surface morphology and shifts in functional groups, indicating an effective degradation process. This was proven during 14 days of incubation, providing a significant decrease in BOD (51.8%) and COD (54.1%) values compared to the control. The Ca-bentonite-based mixed bacterial immobilization formulation showed stable potential in degrading wax in batik waste, indicated by enzymatic activity, changes in surface morphology, and a decrease in BOD and COD levels compared to the control.
       
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      http://repository.ipb.ac.id/handle/123456789/166683
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      • UT - Environmental Engineering and Management [212]

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      Indonesia DSpace Group 
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