Potential of Soil Bacteria as Mercury Bioremediation Agent in Traditional Gold Mining
Penulis/Author
WINARDI (1); Dr. Sudrajat, S.Si., M.P. (2); Prof. Dr. Drs. Eko Haryono, M.Si. (3); Prof. Dra. Agnes Endang Sutariningsih Soetarto, M.Sc., Ph.D. (4)
Tanggal/Date
2019
Kata Kunci/Keyword
Abstrak/Abstract
Mandor Village has developed as a tradisional gold mining area since years ago. It involved activities that have led to extreme land condition and the release of mining residues, i.e., mercury, to the soils. The study examined the potential of soil bacteria as mercury bioremediation agent based on their population and activity in former mines with different ages. The bacterial population was measured by isolating soil bacteria on solid media using the pour plate method, and the colonies were enumerated during the incubation. The Nutrient Agar (NA) medium was used to obtain the total population, whereas the Salt Base Solution (SBS) was to determine the presence of mercury-tolerant bacteria. The addition of HgCl2 affected the number of the colonies. The colony only grew until the concentration of HgCl2 reached 5 mg/l, and the total colony was larger in older mines. The observation of bacterial activity showed that biotransformation performance was lower when the concentration of mercury was the same as its natural presence in soils (0.1-0.5 mg/l) compared with higher mercury level (1 mg/l). The research showed that lower mercury concentrations in nature reduced the natural ability of bacteria to transform pollutants. This study provides information that can assist the development of a technological approach to control mercury pollution in former traditional gold mines in an environmentally friendly manner using indigenous soil bacteria.
Rumpun Ilmu
Biologi (dan Bioteknologi Umum)
Bahasa Asli/Original Language
English
Level
Nasional
Status
Dokumen Karya
No
Judul
Tipe Dokumen
Aksi
1
Potential of Soil Bacteria as Mercury Bioremediation Agent in Traditional Gold Mining.pdf
