Underwater disposal of mine tailings in lakes and seas has been considered favorable due to the geochemical stability obtained during long-term storage anoxic sediments. Sulfides are stable ore; however, oxidation transformation some substances into more soluble forms may impact bioavailability processes enhance risk toxic effects aquatic environment. The goal this work was construct a model fo...

Kegiatan pertambangan di Pulau Bangka telah lama dilakukan sejak zaman kolonial Belanda hingga saat ini. Hasil penambangan timah menyisakan banyak tailing tambang yang tidak teratur sehingga menimbulkan kerusakan lingkungan. Meskipun demikian, terdapat mineral ikutan dapat menjadi sumber potensial logam kritikal baru. Tujuan penelitian ini adalah mengetahui jenis-jenis dan nilai kandungan monas...

In this research work, the zinc extraction was investigated, using bioleaching process from a low grade zinc concentrate which was produced from the accumulated flotation tailings. Zinc content was initially upgraded to 11.97% by flotation process. Bioleaching experiments were designed and carried out by a mixed culture of Acidithiobacillus ferrooxidans, Acidithiobacillus thiooxidans, Leptospir...

Kadar merkuri (Hg) yang tinggi pada tailing tambang emas adalah sumber pencemaran lingkungan termasuk lahan pertanian. Penurunan kadar Hg di dengan metode bioremediasi strategi efektif, murah dan mudah. Azotobacter rizobakteri pemfiksasi nitrogen penghasil eksopolisakarida mengubah mobilitas logam berat serta memicu pertumbuhan tanaman optimal jika terdapat bahan organik. Penelitian ini dilakuk...