• Biocontainment of polychlorinated biphenyls (PCBs) on flat concrete surfaces by microbial carbonate precipitation 

  Okwadha, George (2015-09-02)

  In this study, a biosealant obtained from microbial carbonate precipitation (MCP) was evaluated as an alternative to an epoxy-coating system. A bacterium Sporosarcina pasteurii strain ATCC 11859, which metabolizes urea and ...
• Evaluation of Surface Water Runoff from Fly Ash–Stabilized and Nonstabilized Soil Surfaces 

  Okwadha, George (2015-09-02)

  This study evaluated the constituent make up of simulated rainwater runoff from Class C fly ash–stabilized and nonstabilized clay soil using laboratory test pads to assess the potential for impacts to surface water from ...
• Thermal Removal of Mercury in Spent Powdered Activated Carbon from TOXECON Process 

  Okwadha, George (2015-09-02)

  This research developed and demonstrated a technology to liberate Hg adsorbed onto powdered activated carbon PAC by the TOXECON process using pilot-scale high temperature air slide HTAS and bench-scale thermogravimetric ...
• Optimum conditions for microbial carbonate precipitation 

  Okwadha, George (2015-09-02)

  The type of bacteria, bacterial cell concentration, initial urea concentration, reaction temperature, the initial Ca2+ concentration, ionic strength, and the pH of the media are some factors that control the activity of ...

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