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James Mueller, PhD
Technical Board Member, President
Provectus Environmental Products, Inc.

Dr. Mueller received a Bachelor of Science Degree in Plant & Soil Science and an MSc Degree in Agronomy/Soil Microbiology from SIU-Carbondale. He received his Ph.D. in Soil Microbiology & Biochemistry/Genetics from Clemson University. He completed Post-Doctoral training at the U.S. EPA Environmental Research Laboratory in Gulf Breeze, Florida. In 1990, Dr. Mueller formed SBP Technologies, Inc. to develop bioremediation technologies and remedial strategies focused on PAHs and CHCs.  SBP was sold to The EICON Group, Inc. / Roy F. Weston, Inc. and in June 1997 Dr. Mueller joined the staff of URS Corporation (formerly DAMES & MOORE). In 2003, he created Adventus Americas Inc. which was sold to FMC in November 2011.  FMC sold the businesses as PeroxyChem, LLC to One Equity Partners / JP Morgan Chase in March 2014. In April 2014 Dr. Mueller became President of Provectus Environmental Products, Inc. to commercialize advanced ISCO and antimethanogenic ISCR technologies.

Potential Consequences of Excessive Methane Production Following ERD and Conventional ISCR Treatment: Case Studies and Remedial
At some sites, excessive production of methane has been observed following the addition of organic hydrogen donors such as (emulsified) oils, lecithin, sugars and conventional ISCR reagents. This is because methanogens are commonly the most ubiquitous indigenous microbes in anoxic aquifer settings. And given that methanogens replicate in 1 to 2 hours (whereas Dehalococcoides spp. for example double in 24 to 48 hours), they often bloom and dominate following the addition of organic hydrogen donors, thereby liberating large amounts of methane gas. There are at least three important consequences of this response: i) By utilizing hydrogen, the methanogens compete with dechlorinating microbes thus making inefficient use of the remedial amendment (just 20 ppm methane in groundwater represents about 35% “waste” of material – this is a common and tangible detriment); ii) Rapid growth of methanogens consumes alkalinity while generating acids thereby having the potential for aquifer acidification (which may liberate heavy metals causing secondary contaminant issues); and iii) Elevated methane concentrations can exceed current and pending regulations of < 10 to <28 ppm in groundwater and/or 0.5% v/v methane in soil gas (e.g., 10% of the LEL) and/or indoor air (methane is flammable between 5% and 15% v/v). Five case studies will be reviewed where methane production was problematic: i) Subsurface fires next to an industrial facility at a site in the Midwest USA immediately following the application of a convention Read More >>

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