Our next webinar is scheduled for Thursday, June 11th, 2020 12:00 PM – 1:00 PM EDT, featuring Duane Graves and Jacques Smith.

We are excited to announce SiREM is adding a new laboratory location in Knoxville, Tennessee, which in partnership with our Guelph, Ontario facility, provides additional resources to support our U.S., Canadian and international customers. The addition of the Knoxville location increases our portfolio of leading-edge environmental remediation solutions and brings on board new highly skilled practitioners to our team! Jeff Roberts will provide an overview of SiREM services and discuss this exciting time for SiREM and its customers. Duane and Jacques will present several case studies highlighting the additional capabilities the new Knoxville location brings to the SiREM suite of products and services.

We hope you will join us for our next webinar:

SiREM is Expanding to Serve you Even Better!



The addition of the Knoxville laboratory location broadens both the capacity and capabilities of SiREM in several areas including storm-, waste-, and groundwater, landfill leachate, sediment, coal combustion residuals (CCR) and soil remediation.

Dr. Duane Graves will introduce SiREM’s new location and the services it offers. In addition to the already broad suite of technical offerings SiREM provides, our second location provides a U.S. platform for those services, as well as, additional capabilities that will further enhance SiREM’s value to our customers. Duane will provide a few short vignettes to illustrate how SiREM is growing to serve you better. Specific areas to be discussed include (i) focused development of a biological treatment process to produce a marketable product; (ii) metals stabilization using biological, chemical and physical treatment processes; (iii) in situ solidification and stabilization of soil, CCR, and sediment; (iv) leaching studies; and (v) bioreactor process and design testing.

Dr. Jacques Smith will highlight three recent and innovative studies pertaining to industrial wastewater and groundwater we have had the privilege to partake in. Two separate studies involved activated sludge to lower biological oxygen demand (BOD), chemical oxygen demand (COD) and phenols from industrial wastewater. The first of the two treatability studies evaluated treatment of wastewater generated from washing commercial airliners that contained 8,100 mg/L COD and 5,300 mg/L BOD. Using food to mass ratios of between 0.4 and 0.6, the COD and BOD content was lowered to 127 mg/L and 11 mg/L, respectively. The second study evaluated the breakdown of phenolics using activated sludge alone as well as activated sludge in combination with powdered activated carbon (PAC). Both applications successfully reduced the phenolic loading to concentrations below the detection limit (9.7 µg/L) within 24 hours. A third, larger scale reactor study involved investigating microbial heat generation observed in some municipal solid waste landfills which may give rise to Elevated Temperature Landfill (ETLF) conditions. This was investigated by constructing three 55-gallon synthetic landfills in the laboratory equipped to recirculate leachate, measure internal temperatures, gas production, and assess the change in microbial community over time. Temperatures within the reactors reached as high as 110°C (230°F) with a decrease in combustible gas to CO2 ratios, which correlated with published data recorded during separate ETLF investigations. Microbial data also indicated changes in the microbial population as the temperatures increased.

The Presenters:

Duane Graves
Duane is the U.S. Operations Manager at SiREM with over 30 years of experience focused on environmental biotechnology; environmental forensics; in situ groundwater, soil and sediment remediation; evaluation of airborne biological contaminants; and remediation of groundwater. His practice at SiREM specializes in (i) the development, selection, feasibility evaluation, design, and deployment of remedial solutions of hazardous and mixed-waste treatability for complex process engineering and wastewater; (ii) biogeochemical evaluations related to metals attenuation, and (iii) investigation and mitigation of biological agents. Duane also provides expert opinions and testimony to support litigation regarding environmental chemistry, remediation, and microbiology associated with the transport and fate of organic, organochlorine, and inorganic chemicals and metals in sediment, soil, and groundwater; environmental forensics; liability allocation; remediation; and environmental technology issues.

Jacques Smith
Jacques has more than five years of experience in Environmental Laboratory testing and now manages the SiREM Knoxville laboratory. Primarily educated in molecular biotechnology, over the last five years he has broadened his technical skillset by becoming proficient at planning and executing objective bench-scale treatability studies to generate innovative and unbiased remedial solutions. Areas of expertise include Next Generation Sequencing (NGS) to understand microbial community interactions, CCR waste reclamation, leaching studies, settling and dewatering, and wastewater treatment processes. Jacques also has extensive field experience that incudes ground- and surface water sampling, site clearing and drilling oversight, soil core and sediment sampling, PFOS and PFAS sampling and stream inspections.

Jeff Roberts
Jeff is the Operations Manager at SiREM with extensive technical experience in the laboratory assessment and field implementation of soil, sediment and groundwater remediation technologies at sites containing contaminants including chlorinated solvents, petroleum hydrocarbons, emerging contaminants and other recalcitrant compounds. Over the past 18 years he has conducted and managed hundreds of bench-scale batch and column treatability studies and has technical experience in the growth, scale up and field implementation of several anaerobic microbial cultures for bioremediation remedies. Jeff has several years of passive sampling experience and was a lead member in the development and commercialization of the SP3TM sampler.

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