Technology Innovation News Survey
Entries for April 1-15, 2013
The Air Force Civil Engineer Center, Environmental Quality Technical Support Branch, is requesting proposals for innovative, sustainable, and cost-effective technologies or methodologies relevant to environmental compliance concerns across the Air Force in three Environmental Quality Program areas of need:
- Hazardous Materials: Means to remove or treat the effects of perfluorooctanoic acid (PFOA) and perfluorooctane sulfonate (PFOS) found in aqueous fire fighting foam.
- Industrial Wastewater Treatment: Technologies to address recalcitrant organics in industrial wastewater treatment plants.
- Stormwater Modeling Techniques: Installation-wide watershed modeling approaches that enable base facility engineers to maintain compliance with Energy Independence and Security Act section 438.
Federal Business Opportunities, FBO-4186, Solicitation SOL-NC-13-00012, 2013
During FY 2014, U.S. EPA contemplates awarding approximately 24 firm fixed-price contracts of $100,000 each under its Phase I SBIR Program. Phase I contractors will conduct feasibility-related experimental research or R&D efforts in the following areas of interest:
- Topic A. Water: Safe and Sustainable Water Resources.
- Topic B. Innovation in Manufacturing: Chemical Safety for Sustainability.
- Topic C. Waste: Sustainable and Healthy Communities.
- Topic D. Air Quality: Air/Climate/Energy.
- Topic E. Homeland Security.
- Topic F. People, Prosperity, and the Planet (P3) special funding opportunity.
Federal Business Opportunities, FBO-4186, Solicitation SP8000-13-MANGANESEORE, 2013
The Defense Logistics Agency (DLA) is conducting market research to gather information concerning the availability of different categories of contractors for work under NAICS code 562910, Remediation Services. DLA Strategic Materials intends to dispose of stockpiled manganese ore and environmentally restore a 110-acre site located in the McMullen Valley near Wenden, Arizona, to Arizona Department of Environmental Quality (ADEQ) soil remediation levels. The project will include a strategy for disposition of remaining materials; remediation of hazardous contaminants associated with the manganese ore; removal of construction debris from the site at a designated sanitary landfill; restoration of the character of the site to match the surrounding terrain; and acquisition of documentation from the ADEQ confirming the condition of the property is suitable to be returned to the Bureau of Land Management inventory. Responses should be submitted via email by June 28, 2013. https://www.fbo.gov/spg/DLA/J3/DNSC/SP8000-13-MANGANESEORE/listing.html
Federal Business Opportunities, FBO-4185, Solicitation W912PP-13-R-0028, 2013
As part of the MEGA strategy for the Northwestern, Southwestern, and South Pacific divisions, the U.S. Army Corps of Engineers, Albuquerque District, proposes to contract for a wide range of environmental services to support DoD, interagency, and international customers. The solicitation will be issued on or about May 24, 2013, as a total small business set-aside IDIQ MATOC to firms certified by the Small Business Administration as small business under NAICS code 541620, Environmental Consulting Services. This solicitation will facilitate award of up to five contracts with a maximum shared capacity of $50 million. Contracts will have a three-year base period and a two-year option period. https://www.fbo.gov/spg/USA/COE/DACA47/W912PP-13-R-0028/listing.html
Federal Business Opportunities, FBO-4190, Solicitation ONRBAA13-014, 2013
Emerging technologies are needed for dismounted missions to detect, access, diagnose, and neutralize explosive hazards, including improvised explosive devices (IEDs) and unexploded ordnance (UXO). ONR seeks white papers and full proposals for exploratory development in the following areas: (1) Rapid desensitization/neutralization of energetic materials, i.e., development of a man-portable capability to rapidly desensitize loose or exposed energetic material (20 lbs or less) such that it can be moved safely and will not ignite during handling, storage, or transport; and (2) explosive ordnance buried hazard removal. White papers are due no later than 3:00 PM EST on August 30, 2013. https://www.fbo.gov/spg/DON/ONR/ONR/ONRBAA13-014/listing.html
International Journal of Phytoremediation, Vol 15 No 10, 911-923, 2013
In a pilot-scale phytoremediation study, small plots of trees established on a closed municipal waste landfill site were irrigated with recovered groundwater containing 1,4-dioxane and other VOCs. The plots were managed to minimize the leaching of irrigation water, and leaching was quantified by the use of bromide tracer. Results indicated effective removal of the dioxane (2.5 µg/L), likely via phytovolatilization, and good potential for the use of full-scale phytoremediation. A system now is in place at the site to treat the recovered groundwater using two different approaches: a physical treatment system (PTS) during the winter months and a 12-ha phytoremediation system of coniferous trees during the growing season. The PTS removes VOCs via an air stripper and destroys dioxane via photo-catalytic oxidation. Treated water is routed to the local sewer system. The phytoremediation plantation will be irrigated with effluent containing dioxane from the PTS air stripper during the growing season, which will reduce reliance on the costly, high-energy photo-catalytic oxidation process.
Contaminated Soils, Sediments, Water and Energy: Volume 18. AEHS Foundation, Amherst, MA. ISBN-10: 0-9787640-7-2, 106-119, 2013
The Pennsylvania Department of Environmental Protection completed remedial closure of a former gas station property located in Sewickley, Pennsylvania, where earlier fuel leaks had affected the aquifer and threatened the drinking water supply with BTEX and MTBE contamination. Operation of nearby public water supply wells generated a gradient reversal, leading to significant migration and diving of the MTBE plume toward the supply wells. Remedial challenges in the source area included a large vadose zone, aquifer impacts to 90 ft, and location of the property within an existing retail operation, which limited the remedial options. Within three years of installation, an in situ oxidation system combining ozone and hydrogen peroxide via the patented Perozone™ process (Kerfoot Technologies, Inc.) achieved >95% reductions of UST-related constituent concentrations in source area groundwater and promoted subsurface conditions conducive to bioremediation. Additional remedial measures included passive oxygen addition and cut-off pumping for the off-site MTBE plume. [Note: The paper begins on page 106 in the file of the full proceedings that opens at the link.] http://www.aehsfoundation.org/Member/AEHSFoundation/Images/ImageGallery/
Contaminated Soils, Sediments, Water and Energy: Volume 18. AEHS Foundation, Amherst, MA. ISBN-10: 0-9787640-7-2, 46-65, 2013
The source area at a former MGP site in New York contains free-phase DNAPL coal tar from which emanates a groundwater plume of dissolved-phase PAHs and BTEX that migrates beneath a mixed commercial and residential community for three-quarters of a mile to discharge in a tidal bay. A perforated barrier wall was emplaced to contain and control source material. The source area received ozone treatment, and multiple oxygen injection curtain walls installed downgradient stimulated aerobic biodegradation of the plume. This paper discusses the control of the DNAPL source; the efficacy of promoting an attenuating environment to achieve remediation goals; the design and specifications of the barrier wall and ozone and oxygen injection systems; and how the techniques complement each other. This remedial strategy significantly reduced the extent and reach of the groundwater plume and decreased the BTEX and PAH concentrations by ~60-99%. [Note: The paper begins on page 46.] http://www.aehsfoundation.org/Member/AEHSFoundation/Images/ImageGallery/
IPEC 2012: Proceedings of the 19th International Petroleum & BioFuels Environmental Conference, October 29 - November 1, 2012, San Antonio, Texas. 28 slides, 2012
In 1995, a pilot subsurface-flow constructed treatment wetland (CTW) was installed to intercept and treat BTEX-contaminated shallow groundwater discharging to an ephemeral stream traversing a public golf course in Rhode Island. Routine sampling results indicate BTEX removals have consistently exceeded 98%. Based on the success of the pilot system, a full-scale engineered natural system was designed to both improve groundwater capture and treatment and provide treatment and detention of surface water and runoff. The system includes (1) a bioswale to collect and convey stormwater runoff from the golf course to the treatment wetland; (2) a permeable reactive barrier as a pretreatment step to remove iron from shallow groundwater and prevent clogging of the wetland; (3) a subsurface flow CTW to remove BTEX from groundwater and surface water; and (4) a polishing pond to increase the dissolved oxygen content prior to discharge. http://ipec.utulsa.edu/Conf2012/Papers_Presentations/LUDLOW.pdf
Demonstrations / Feasibility Studies
Contaminated Soils, Sediments, Water and Energy: Volume 18. AEHS Foundation, Amherst, MA. ISBN-10: 0-9787640-7-2, 120-129, 2013
In situ chemical oxidation (ISCO) was evaluated in conjunction with sub-slab depressurization (SSD) to address BTEX, MTBE, and naphthalene contamination as the remediation approach for a gasoline-impacted site in an urban area. In the laboratory, activated sodium persulfate (ASP) applied with chelated iron and sodium hydroxide was highly effective in degrading BTEX and naphthalene to <0.5 µg/L at 5 g/L SP within 14 days. ISCO pilot results showed a substantial decrease in total contaminant concentrations in the treatment area during a 15-day test within an ASP radius of influence (ROI) of 18 ft, but wells beyond the 18 ft ROI showed no significant changes in total BTEX or sulfate concentrations, likely due to the behavior of the density-driven downward flow of the injected 30% (w/w) ASP solution. Monitoring data indicated the need to optimize the field design with respect to the ASP dosage, oxidant transport, and depths/spacing of injection and observation wells. [Note: The paper begins on page 120.] http://www.aehsfoundation.org/Member/AEHSFoundation/Images/ImageGallery/
2012 Taipei International Conference on Remediation and Management of Soil and Ground Water Contaminated Sites, October 30-31, 2012, Taipei, Taiwan. 441-465 (paper & slides), 2012
This presentation provides an overview of the scientific principles behind self-sustaining treatment for active remediation (STAR)—a technology based on the principles of in situ smoldering combustion—and summarizes the six years of proof-of-concept research conducted to date. Also covered is the design and results of an in situ STAR pilot study at a former cresol manufacturing facility in New Jersey that was designed to test STAR on coal tar contamination at a large scale under saturated conditions (i.e., below ground surface and below the water table). [The paper begins on page 441 in the portion of the proceedings that opens at the link.] http://sgw.epa.gov.tw/resag/Update_Data/Information9053129Oct_30-31_Proc
Rice University News Release, 15 Apr 2013
Researchers from Rice University, DuPont Central Research and Development, and Stanford University are collaborating on a field pilot test of an innovative ex situ catalytic process that destroys chlorinated contaminants in groundwater. The technology, called PGClear, is scheduled for installation in June 2013 at a DuPont site in Louisville, Kentucky, where chloroform contaminates the groundwater. Valves and pipes within the 6-by-8-ft treatment unit will carry groundwater to a series of tubes that each contains thousands of pellets of PGClear. Palladium and gold make up about 1% of the material in purple-black PGClear pellets, each about the size of a grain of rice, which spur a chemical reaction that breaks down chlorinated contaminants into methane and chloride salt. http://news.rice.edu/2013/04/15/chloroform-cleanup-just-the-beginning-fo
Metals-laden wastewater in Rwanda was assessed in batch and pilot experiments on adsorption equilibrium, kinetics, and sulfide precipitation using volcanic rock as adsorbent and packing material. Subsequently, a low-cost and integrated system to address water affected by Cd, Cr, Cu, Pb, and Zn combined an anaerobic bioreactor as the main treatment step, followed by a polishing pond containing algae, duckweed, and water hyacinth. More than 90% of metal removal was achieved in the bioreactor via metal sulfide precipitation. The use of algae and duckweed as alternatives for water hyacinth plants showed no differences between algae and duckweed ponds based on abiotic differences. Overall, both wetland systems performed well as a polishing step, and the integrated system achieved good removal performance. Suggestions are provided for scaling up the system for industrial use. http://repository.tudelft.nl/view/ihe/uuid%3A5d3a88b4-5681-46b6-905a-431
Crete 2012: 3rd International Conference on Industrial and Hazardous Waste Management. Technical University of Crete, 10 pp, 2012
A pilot treatment plant constructed at an abandoned leather tannery located in southern Austria combines in situ and ex situ processes for chromate (Cr(VI)) reduction based on circulation of contaminated waters between a patented fluidized bed reactor, soil, and groundwater. Following injection of sodium dithionite into the soil, a delivery pump generates a groundwater drawdown cone and then lifts the water to the treatment plant and a sludge separation system, where reduced and precipitated ferric chromium compounds are removed via lamella clarifier and chamber filter press. The treatment plant consists of a mobile container that shelters two series of a total of 10 connected fluidized bed reactor elements containing zero-valent iron (each series can be operated independently), several pumps, and measurement and control systems. Contaminated water is pumped with a flow rate of 3.5 L/s through the reactor cylinders. Cr(VI) reduction rates of up to 88% are reported after a soil-water exchange of 10 pore volumes. Cr(VI) concentrations in the pumped effluent are <0.005 mg/L in the pilot plant. http://www.srcosmos.gr/srcosmos/showpub.aspx?aa=16683
Contaminated Soils, Sediments, Water and Energy: Volume 18. AEHS Foundation, Amherst, MA. ISBN-10: 0-9787640-7-2, 80-86, 2013
This paper summarizes the findings from the laser induced fluorescence (LIF) investigation of an LNAPL area located near the interceptor trenches at the Troy Mills Landfill Superfund Site in Troy, New Hampshire. The LIF field work using UVOST® (Ultraviolet Optical Screening Tool) was performed on September 9-11, 2011, with the following objectives: estimate the current LNAPL extent, measure LNAPL/LNAPL-impacted soil thickness, and evaluate the potential source of the LNAPL plume. [Note: The paper begins on page 80.] http://www.aehsfoundation.org/Member/AEHSFoundation/Images/ImageGallery/
Additional information is available in the field-work documentation at http://www.epa.gov/region1/superfund/sites/troymills/518781.pdf
IC EST2012: The Sixth International Conference on Environmental Science and Technology. American Science Press, Vol II, ISBN: 9780976885344, p 35 [abstract only] 2012
"Contaminated Urban-Yard Restoration: Testing Apatite II Immobilization of Lead in Soil (CURTAILS): A New Orleans Field Trial," is a study to test the ability of Apatite II to sequester soil lead in comparison to the other types of phosphate treatment, and demonstrate that Apatite II is an environmentally acceptable remediation agent because it does not leach from the soil. In side-by-side plot trials at three residential sites, Apatite II is being tested with other phosphate products: Triple Super Phosphate, rock phosphate, hydroxyapatite (calcium apatite), bone-char fertilizer (poorly crystalline apatite), bone-meal fertilizer (typically, 90% hydroxyapatite and 10% carbon), and phosphoric acid. Tests of surface soils collected at various locations in each yard revealed soil Pb concentrations typically >1,000 mg/kg, mainly in the form of Pb-paint pigment particles. This project partners researchers from the University of Texas at Arlington with Tulane and Xavier universities and U.S. EPA.
Chemical Research in Chinese Universities, Vol 29 No 1, 37-41, 2013
A permeable reactive barrier (PRB) has proven to be a cost-effective technology for remediating petroleum-contaminated groundwater at a field site in northeast China. The PRB uses hydrothermal palygorskite, a natural nanoscale clay mineral, as a reactive medium. Studies of the adsorption of total petroleum hydrocarbons (TPH) in groundwater onto hydrothermal palygorskite indicates that the removal rates of TPH, benzene, naphthalene, and phenantharene can reach up to 90% for palygorskite with a diameter of 0.25 to 2.00 mm after thermal pretreatment at 140°C. Analysis of the adsorption mechanism revealed that hydrothermal palygorskite is a fibrous silicate mineral enriched in Mg and Al with large surface area and porosity.
Journal of Hazardous Materials, Vols 207-208, 111-116, 2012
This paper presents the results of column tests conducted to define the optimum weight ratio of zero-valent iron (ZVI)/pumice granular mixtures to be used in a permeable reactive barrier (PRB) for the removal of nickel from contaminated groundwater. The tests were carried out feeding the columns with aqueous solutions of nickel nitrate at concentrations of 5 and 50 mg/L using three ZVI/pumice granular mixtures at various weight ratios (10/90, 30/70 and 50/50), for a total of six column tests; two additional tests were carried out using ZVI alone. The most successful compromise between reactivity (higher ZVI content) and long-term hydraulic performance (higher pumice content) seems to be given by the ZVI/pumice granular mixture with a 30/70 weight ratio. http://www.srcosmos.gr/srcosmos/showpub.aspx?aa=14206
This paper reports the results of an 8-year field study of assisted natural remediation via addition of soil amendments—sugar beet lime (SL), an inorganic residue; a mixture of SL and leonardite (LESL), a low-rank coal rich in humic acids; and a biosolid compost (BC)—at a site in Spain moderately contaminated with trace elements from the Aznalcollar mine tailings spill. Incorporation of amendments occurred in 2003-2004 and 2005-2006. Results demonstrate clear differences in the potential long-term sustainability of in situ amendments under field conditions and highlight the importance of performance monitoring. Concentrations of soluble Cd, Cu, and Zn decreased after the first SL application in 2003 and were still very low eight years later. Additional application of SL did not change the initial results; hence, SL application can be considered an effective long-term means to remediate trace element pollution in soil. The organic amendments BC and LESL were less effective than SL because they required additional applications to achieve the same results. http://digital.csic.es/handle/10261/57057
Ground Water Monitoring & Remediation, Vol 32 No 3, 52-62, 2012
The potential for in situ biodegradation of tert butyl alcohol (TBA) by creation of aerobic conditions in the subsurface with recirculating well pairs was investigated in two field studies conducted at Vandenberg Air Force Base. In the first experiment, a single recirculating well pair with bromide tracer and oxygen amendment successfully delivered oxygen to the subsurface for 42 days. TBA concentrations decreased from ~500 µg/L to below the detection limit within the treatment zone, and the treated water was detected in a monitoring transect several meters downgradient. In the second experiment, a site-calibrated model was used to design a double recirculating well pair with oxygen amendment, which successfully delivered oxygen to the subsurface for 291 days and also lowered TBA concentrations below the detection limit. Methylibium petroleiphilum strain PM1, a known TBA-degrading bacterium, was detectable at the study site, but addition of oxygen had little impact on the already low baseline population densities, suggesting that there was not enough carbon within the groundwater plume to support significant new growth in the PM1 population. Results indicate that given favorable hydrogeologic and geochemical conditions, the use of recirculating well pairs to introduce dissolved oxygen into the subsurface is a viable method to stimulate in situ biodegradation of TBA or other aerobically degradable aquifer contaminants.
Journal of Environmental Management, Vol 111, 150-158, 2012
Pilot-scale field testing of passive bioreactors was performed to evaluate the efficiency of a mixture of four substrates (cow manure compost, mushroom compost, sawdust, and rice straw) relative to mushroom compost alone, and of the effect of the Fe/Mn ratio, during the treatment of acid mine drainage (AMD) over a 174-day period. AMD from a closed mine site in South Korea was given a 4-day hydraulic retention time. Both substrates gave satisfactory performance in neutralizing pH (6.1-7.8), and the system was able to reduce sulfate consistently from day 49, after the initial leaching out from organic substrates. Metal removal efficiencies were on the order of Al (~100%) > Fe (68-92%) > Mn (49-61%). Overall, the mixed substrate showed comparable performance to mushroom compost, while yielding better effluent quality upon startup. The results also indicated mushroom compost could release significant amounts of Mn and sulfate during bioreactor operation.
Environmental Sciences, Vol 1 No 1, 33-52, 2013
A system of poplar cuttings removed at least 19 of the 29 PCB congeners detected in trace amounts (37.9 ng/g in total) in a commercial garden soil, whereas in the unplanted soil only two congeners were no longer detectable after 96 days. The most recalcitrant congener, PCB 52, decreased only 0.1% in the unplanted reactors while declining 22.3% in the planted system. Greater removal of a PCB 77 spike was observed in the planted system (17.2%) compared to the unplanted system (2.8%). These results suggest the potential effectiveness of phytoremediation as a tool for cleaning commercially available garden soils lightly contaminated with PCBs. http://m-hikari.com/es/es2013/es1-4-2013/meggoES1-4-2013.pdf
This report discusses causes and issues related to recontamination to assist state regulators in the planning and decision-making processes necessary to minimize the potential for recontamination at sediment cleanup sites. http://www.astswmo.org/Files/Policies_and_Publications/CERCLA_and_Brownf
This Engineer Manual provides procedural guidance to develop conceptual site models (CSMs) at sites potentially containing munitions and explosives of concern; munitions constituents; or hazardous, toxic, and radioactive environmental contamination. The CSM is a description of a site and its environment that is based on existing knowledge. It describes sources and receptors and the interactions that link them. It assists the team in planning, interpreting data, and communicating. The CSM will provide a planning tool to integrate information from a variety of resources, evaluate the information with respect to project objectives and data needs, and respond through an iterative process for further data collection or action. The target audience is the project delivery team. This manual supersedes EM 1110-1-1200, dated February 2003. http://publications.usace.army.mil/publications/eng-manuals/EM_200-1-12/
This Engineer Pamphlet describes air pathway analysis (APA) procedures to provide guidance for emission rate and dispersion modeling used to determine public health impacts of air emissions from remedial action projects, but it does not apply to the cleanup of radioactive isotopes or the abatement of lead or asbestos hazards in buildings. Using APA results in the design process for remedial actions helps to justify need and design requirements for perimeter air monitoring systems. It also aids in the design of air pollution control equipment and procedures. http://publications.usace.army.mil/publications/eng-pamphlets/EP_200-1-2
CRC Press, Boca Raton, FL. ISBN: 9781439816677, 454 pp, 2012
After an overview of heavy metal contamination issues, the text reviews the concepts and technologies of pollution prevention. It then examines technologies for metal decontamination, ranging from precipitation—most commonly used in water treatment—to cutting-edge technologies such as precipitation-crystallization, ion exchange, membrane filtration, and electrolysis. Mathematical models for metal transportation, removal, and recovery are also included.
AEHS Foundation, Amherst, MA. ISBN-10: 0-9787640-7-2, 188 pp, 2013
This publication contains selected manuscripts from the 28th Annual International Conference on Soils, Sediments, Water and Energy, held October 15-18, 2012, at the University of Massachusetts Amherst. Volume 18 of the Proceedings covers heavy metals, dioxins, PCBs, remediation of MGP sites and other facilities, groundwater quality, risk assessment, sediment quality, and regulatory applications, thereby providing a snapshot of the broad array of technical presentations that comprised the 28th annual conference. This volume is posted alongside proceedings from earlier years at http://www.aehsfoundation.org/ecc-proceedings.aspx
The goal of this conference was to provide a platform for administrators, researchers, and engineers from Asia and other countries to exchange and promote advanced concepts, technologies, and products related to the remediation and management of contaminated soil and groundwater. Papers and slide presentations were delivered by 35 international speakers and participants from 12 countries. The graphics-heavy proceedings are available in four parts for download at http://sgw.epa.gov.tw/resag/Public/ShowMessage.aspx?id=55
EPA 542-F-13-001, 12 pp, Mar 2013
Sites undergoing cleanup provide opportunities for reducing waste and diverting it from landfills. Many of the opportunities involve reusing onsite materials, reusing or recycling materials off site, and procuring construction materials with recycled content. Site-specific examples of applying these and other strategies and an extensive compendium of related tools and resources are provided in this issue paper. http://www.clu-in.org/greenremediation/docs/materials_management_issue%2
The Technology Innovation News Survey welcomes your comments and
suggestions, as well as information about errors for correction. Please
contact Michael Adam of the U.S. EPA Office of Superfund Remediation
and Technology Innovation at firstname.lastname@example.org or (703) 603-9915
with any comments, suggestions, or corrections.
Mention of non-EPA documents, presentations, or papers does not constitute a U.S. EPA endorsement of their contents, only an acknowledgment that they exist and may be relevant to the Technology Innovation News Survey audience.