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Mercury(II) removal from aqueous solutions by nonviable Bacillus sp. from a tropical estuary

Name: Mercury(II) removal from aqueous solutions by nonviable Bacillus sp. from a tropical estuary
Creator: Carlos Green-Ruiz
Keywords: Tropical Climate, 0211 other engineering and technologies, Bacillus, Mercury, 02 engineering and technology, Hydrogen-Ion Concentration, 01 natural sciences, 6. Clean water, Water Purification, Solutions

descriptionPublicationkeyboard_double_arrow_right Article , Journal 01 Oct 2006Publisher:Elsevier BVJournal:Bioresource Technology, volume 97, pages 1,907-1,911 (issn: 0960-8524,

Authors: Carlos Green-Ruiz;

doi: 10.1016/j.biortech.2005.08.014

pmid: 16219462

Mercury(II) removal from aqueous solutions by nonviable Bacillus sp. from a tropical estuary

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Abstract

Use of microorganisms for removing mercury is an effective technology for the treatment of industrial wastewaters and can become an effective tool for the remediation of man-impacted coastal ecosystems with this metal. Nonviable biomass of an estuarine Bacillus sp. was employed for adsorbing Hg(II) ions from aqueous solutions at six different concentrations. It was observed that 0.2 g dry weight of nonviable biomass was found to remove from 0.023 mg (at 0.25 mg L(-1) of Hg(II)) to 0.681 mg (at 10.0 mg L(-1) of Hg(II)). Most of the mercury adsorption occurred during the first 20 min. It was found that changes in pH have a significant effect on the metal adsorption capacity of the bacteria, with the optimal pH value between 4.5 and 6.0 at 25 degrees C when solutions with 1.0, 5.0 and 10.0 mg L(-1) of Hg(II) were used.

Related Organizations

National Autonomous University of Mexico
Mexico

Keywords

Tropical Climate, Bacillus, Mercury, Hydrogen-Ion Concentration, Water Purification, Solutions, Industrial Microbiology, Waste Management, Biomass, Mexico, Water Pollutants, Chemical

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