Clu-in recent additions anoxia cerebral en el parto

The Department of Defense’s SERDP is seeking environmental research and development proposals for funding beginning in FY 2020. Projects will be selected through a competitive process. The Core Solicitation provides funding opportunities for basic and applied research and advanced technology development. Core projects vary in cost and duration consistent with the scope of the work proposed. The Statements of Need (SON) referenced by this solicitation request proposals related to the SERDP program areas of Environmental Restoration (ER), Munitions Response (MR), Resource Conservation and Resiliency (RC), and Weapons Systems and Platforms (WP). The SERDP Exploratory Development (SEED) Solicitation provides funding opportunities for work that will investigate innovative environmental approaches that entail high technical risk or require supporting data to provide proof of concept.


Funding is limited to not more than $200,000 and projects are approximately one year in duration. This year, SERDP is requesting SEED proposals for the Munitions Response and Weapons Systems and Platforms program areas. anoxic encephalopathy emedicine All Core pre-proposals are due January 8, 2019. anxiety disorder adalah SEED proposals are due March 5, 2019.

Activated carbon (AC)-based technology involves emplacement of AC-based amendments for in situ remediation of soil and groundwater. Besides AC, amendments typically include other reactive products commonly used with in situ remediation technologies, such as in situ chemical reduction (ISCR), in situ chemical oxidation (ISCO), and bioremediation. The technology is commonly referred to as "carbon-based injectate" (CBI), especially for remediation of petroleum hydrocarbons. AC-based amendments remove contaminant via two processes: adsorption by AC and degradation by reactive amendments. The coupling of adsorption and degradation makes this technology a promising remedial option for addressing persistent plumes emanating from contaminants sorbed on soil, residual non-aqueous phase liquid (NAPL), or mass stored in low-permeability zones. The technology might also be applicable near or at the source area, especially when combined with other source treatment remedies, to limit contaminant mass flux out of source zones to downgradient plumes.

The purpose of this project was to evaluate qPCR-based molecular diagnostic tools for the purpose of estimating the attenuation contribution of VC-oxidizing bacteria. Groundwater and aquifer samples were taken from several DoD sites. The method targeted functional genes used by etheneotrophic bacteria in the aerobic VC biodegradation pathway. Functional genes associated with both VC oxidation and VC reduction were found present and expressed in groundwater samples. hypoxic brain injury recovery The researchers determined this by analyzing the relationships between functional genes associated with VC biodegradation and geochemical parameters, as well as the bulk VC attenuation rate at these contaminated sites. This novel technology promises to reveal the abundance and functionality of etheneotrophs at VC-contaminated sites. When this information is provided alongside a site-wide VC degradation rate, it could provide evidence that aerobic VC biodegradation is a significant contributor to overall VC natural attenuation processes.

Monitoring was performed using soil sampling, passive flux meters, and push-pull tracer testing up to 3.7 years following active bioremediation of chlorinated ethene DNAPL source areas located at Alameda Point, Calif. Results showed that despite the absence of lactate, lactate fermentation transformation products, or hydrogen, biogeochemical conditions remained favorable for the reductive dechlorination of chlorinated ethenes. While ethene levels suggested relatively low dechlorination of the parent TCE and daughter products, compound-specific isotope analysis (CSIA) showed that the extent of complete dechlorination was much greater than indicated by ethene generation. Results of the push-pull tracer testing confirmed that DNAPL remained in a portion of the source area, consistent with soil and groundwater data. Reliance on ethene generation alone as an indicator of complete dechlorination significantly underestimated the extent of complete dechlorination, as CSIA analysis provided a more reliable estimate of dechlorination than reliance on ethene generation alone.

Electrokinetic (EK)-enhanced amendment delivery for in situ bioremediation (EK-BIO) via enhanced reductive dechlorination of a PCE source area in clay was conducted at Naval Air Station Jacksonville, Florida. hypoxic ischemic encephalopathy causes The EK-enhanced amendment delivery technology entails the establishment of an electric field in the subsurface using a network of electrodes. The electrical current and voltage gradient established across a direct-current electric field provide the driving force to transport remediation amendments, including electron donors, chemical oxidants, and even bacteria, through the subsurface. The EK demonstration system consisted of 9 electrode wells and 8 supply wells located within a target treatment area measuring ~40 ft by 40 ft. The remediation amendments distributed by the EK system included electron donor (lactate provided as potassium lactate), pH control reagents (potassium carbonate), and a dechlorinating microbial consortium (KB-1®) containing Dehalococcoides. Project results showed that EK achieved relatively uniform transport in low-permeability materials.

Separate field treatability studies were performed at the Trust site to evaluate biological and chemical reduction of Cr(VI) in the groundwater. For the biological reduction treatability study (Nov. 2016-Oct. 2017) in the Central Retention Basin, three separate substrate injection events were conducted to promote in situ biological reduction of Cr(VI). Carbon substrates injected over the three injection events included EOS PRO®, industrial sugar wastewater, granular sugar, and/or molasses. hypoxic ischemic encephalopathy radiology ppt Monosodium orthophosphate (Aquapure 3601®) and a 39% solution urea/diammonium phosphate blend were injected as additional sources of phosphate and nitrogen nutrients. Sodium sulfite and ascorbic acid, both oxygen scavengers, were mixed with the substrate solution to promote anaerobic conditions prior to injecting. Sodium bicarbonate was also mixed with the substrate solution to adjust the pH as needed. Stabilized Lake Mead Water (SLMW), used as chase/flush water, was injected to enhance the carbon substrate distribution across the injection well network. For the chemical reduction study conducted August 7-8, 2017, the injection and monitoring wells installed as part of the Ammonium Perchlorate Area Up and Down Flushing Treatability Study were used for a single chemical injection event of a total of 600 gal of a calcium polysulfide (CPS) solution (60 gal of CPS and 540 gal of SLMW). The solution was injected across the shallow and intermediate injection wells associated with Plots 1 and 2 in the flushing treatability study area. A total of 3,910 gal of SLMW was injected as chase/flush water to enhance subsurface distribution. The findings of these treatability studies will be included in the feasibility study of remedial action alternatives to address Henderson legacy conditions.

The objective of this white paper is to present information that will support the eventual evaluation of in situ thermal remediation (ISTR) to meet remedial objectives in selected areas of groundwater contamination at the Santa Susana Field Laboratory site. Corrective measures studies will be prepared separately by DOE, NASA, and Boeing for their respective areas of responsibility. anoxic encephalopathy symptoms The ultimate remedial objectives for the site are chlorinated solvent mass removal to a level that meets applicable state and federal risk-based groundwater standards. The ISTR evaluation consists of a comprehensive literature review focused on the application of ISTR to remove VOCs from bedrock sites. This paper is not intended to be a general review of all reported ISTR applications, nor does it provide details regarding ISTR system construction and operation. Rather, this paper summarizes the primary types of ISTR, discusses their effectiveness in reducing chlorinated VOC contamination in bedrock, and provides several specific examples of full-scale implementation.