Search Results - rolf+halden

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Parallel In Situ Screening for Optimizing Remediation Strategies for Saturated Contaminated Sites
In situ bioremediation holds great promise as a safe and cost-effective strategy for cleanup of contaminated sediments and groundwater. The design of bioremediation systems requires site-specific characterization of the types of microorganisms present, what their potential metabolic capabilities are, and to what extent these degradative functions are...
Published: 10/13/2023   |   Inventor(s): Rolf Halden
Keywords(s):  
Category(s): Environmental Remediation/Wastewater Treatment, Life Science (All LS Techs)
Methods and Systems for Ultra-trace Analysis of Environmental Waters
Many sites with ground and/or surface water pollution have been identified across the United States. For site characterization, exposure and risk assessment as well as remediation monitoring, it is important to analyze the environment for toxic contaminants at trace levels. However, this sensing is often expensive, especially when attempting...
Published: 10/13/2023   |   Inventor(s): Rolf Halden
Keywords(s): Agriculture and Animal Science, Environmental, Risk Assessment
Category(s): Chemical/Biological Sensors, Environmental Remediation/Wastewater Treatment, Life Science (All LS Techs)
Wastewater Based Epidemiology Portfolio
Wastewater and sewage sludge from wastewater treatment plants represent an underutilized diagnostic matrix indicative of many population-wide conditions (e.g., exposure to hazardous substances/pollutants, disease prevalence, health and prosperity, and more). While there have been many genome-wide and epigenome-wide association studies that show the...
Published: 8/23/2023   |   Inventor(s): Melanie Newell, Rolf Halden, Ayesha Babbrah, Anumitha Aravindan, Devin Bowes, Erin Driver
Keywords(s):  
Category(s): Bioanalytical Assays, Chemistries & Devices, Diagnostic Assays/Devices, Life Science (All LS Techs), Environmental
Devices and Methods for the Determination of the Bioavailability of Pollutants
Persistent contaminants may be present in very low concentrations in the environment and yet exert considerable effects on living organisms via bioaccumulation. Current environmental engineering sample collection, preparation, and analysis practices may under- or overestimate the actual concentrations to which aquatic or sedimentary biota are exposed....
Published: 2/23/2023   |   Inventor(s): Rolf Halden, Isaac Roll
Keywords(s): Environmental
Category(s): Chemical/Biological Sensors, Environmental Remediation/Wastewater Treatment, Life Science (All LS Techs)
Methods and Systems for In Situ Temporary Containment of Soils for Remediation or Other Treatments
Soil contamination is a worldwide problem, whether it is from heavy hydrocarbon spills, industrial activity or agricultural chemicals, and there are many different strategies for treatment. One thing of utmost importance, no matter what treatment strategy is utilized, is the prevention of downward and outward migration of pollutants at treatment sites....
Published: 2/23/2023   |   Inventor(s): Rolf Halden, Edward Kavazanjian, Alizee Jenck, Nasser Hamdan, Thomas Hoelen
Keywords(s):  
Category(s): Environmental Remediation/Wastewater Treatment, Life Science (All LS Techs)
Removal of Ionizable Resources and/or Contaminants from Sludge
Industrial sludges, such as municipal sewage sludges (MSS), are an abundant by-product of process flow and wastewater treatment. Of the 6.5 million metric tonnes of MSS produced annually in the U.S., >50% are applied on land as a soil amendment. This practice poses potential environmental and human health concerns. Screening of nationally representative...
Published: 2/23/2023   |   Inventor(s): Rolf Halden, Arjunkrishna Venkatesan
Keywords(s): Environmental
Category(s): Environmental Remediation/Wastewater Treatment, Environmental, Life Science (All LS Techs)