bioremediation groundwater Articles
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Bioremediation of groundwater at a gas station in PA
The target compounds detected in the source area wells (MW-1, OW-A, and OW-B) decreased during the eight quarterly sampling events performed since the injection of HydroRemed. These compounds included benzene, ethylbenzene, naphthalene, toluene, 1,2,4-TMB, and 1,3,5-TMB. During the last three quarters (November 2011 to May 2012), the only target compounds 1,2,4-TMB and 1,3,5-TMB, were drastically ...
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Cl-Out Bioremediation of Groundwater in Clay Soils
CL-Out bioremediation of groundwater in clay soils reduced concentrations of PCE and TCE at a former dry cleaners in Illinois. In just over 2 weeks after injection, CL-Out microbes cut the contaminant concentrations in half. PCE from 62.2 to 25.6 mg/L TCE from 11.2 to 6.0 mg/L Cis 1,2-DCE from 3.8 to 1.2 mg/L Vinyl chloride less than 0.001 mg/L before and after treatment The ...
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PCE Bioremediation in Aerobic Groundwater
CL-Out microbes were used to remediate PCE in ground water at a former printing company in Kentucky. The ground-water stratigraphically was in an alluvial sand deposit with high permeability to facilitate the injection. The high permeability of the aquifer matrix also supported aerobic ground water conditions. With one application of CL-Out the concentration of PCE decreased from 3,600 ug/L to ...
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Feasibility study of in-situ bioremediation for nitrobenzene-contaminated groundwater
Although many studies have simulated in-situ bioremediation of contaminated groundwater, most of them have not considered hydrochemical conditions and indigenous microorganisms, thus potentially rendering results inapplicable to actual in-situ groundwater bioremediation projects. This study focused on a nitrobenzene-contaminated groundwater site located in Jilin City, China. The actual ...
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Response of bacteria and meiofauna to iron oxide colloids in sediments of freshwater microcosms
The use of colloidal iron oxide (FeOx) in the bioremediation of groundwater contamination implies its increasing release into the environment and requires an assessment of its ecotoxicological risk. Therefore, microcosm experiments were carried out to investigate the impact of ferrihydrite colloids (Fh‐Col) on the bacterial and meiofaunal communities of pristine freshwater sediments. The ...
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Enhanced bioremediation of groundwater using in-well methods – Case Study
Overview: This white paper provides a comparison of two groundwater treatment methods that are used to facilitate remediation of floating and dissolved petroleum hydrocarbons in groundwater. Both methods have some merit. However, United Remediation Technology (UniRemTech)’s Wellboom ™ can provide a faster and longer lasting solution due to its composition of absorption and in-situ ...
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Groundwater remediation using simulation-optimisation approach: A review
Optimal design of a remediation system has been an active and important area of research since the past several years due to its potential to reduce the remediation cost substantially. The paper presents the state-of-the-art for application of simulation-optimisation approach to design an optimal groundwater remediation system. In the simulation-optimisation approach, the researchers have used ...
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Anaerobic Bioremediation of Groundwater Using Edible Oil Substrate EOS® In an Unconfined Groundwater Aquifer
ABSTRACT: To treat groundwater contaminants in situ, enhanced anaerobic bioremediation processes can be stimulated through addition of soluble substrates. At a dry cleaners site located in San Jose, California, the goal was to find a substrate that is long lasting and easily distributed into the saturated soils. After evaluating several alternatives, in situ bioremediation using an emulsified ...
By Redox Tech
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Aquifers and hyporheic zones: Towards an ecological understanding of groundwater
Ecological constraints in subsurface environments relate directly to groundwater flow, hydraulic conductivity, interstitial biogeochemistry, pore size, and hydrological linkages to adjacent aquifers and surface ecosystems. Groundwater ecology has evolved from a science describing the unique subterranean biota to its current form emphasising multidisciplinary studies that integrate hydrogeology ...
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A Citizen`s Guide to Bioremediation
What is bioremediation? Bioremediation is a treatment process that uses naturally occurring microorganisms (yeast, fungi, or bacteria) to break down, or degrade, hazardous substances into less toxic or nontoxic substances. Microorganisms, just like humans, eat and digest organic substances for nutrients and energy. In chemical terms, 'organic' compounds are those that contain carbon and hydrogen ...
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Bioremediation Removes Environmental Stigma for Resort
Untitled Document Although environmental contamination is far from our minds when we think of Florida resort properties, leaking underground storage tanks can contaminate soil and groundwater, and prevent property financing and redevelopment. Microbial bioremediation has recently been used at two Florida resorts to restore the propertys environmental ...
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Bioremediation of ground water by treatment of soil at source with Vaporremed
A heating oil company during servicing of a home in PA released almost 150 gallons of heating oil that seeped into the basement and below. Ground water was shallow and PA DEP wanted to ensure that the contamination did not pollute the water. The environment company overlooking the cleanup decided to use VaporRemed to reduce the fumes. In three weeks time the level of contamination of the soil and ...
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In Situ Soil and Ground Water Bioremediation Using CL-Out Cometabolism for PCE and TCE Removal - Case Study
Background The dry cleaning solvent was found in an area around a dry cleaning machine. The solvent entered the soil below the building and percolated through the soil to a perched ground water zone and an underlying second ground water zone. The soil and sediments are interbedded alluvial and marine sediments with a high permeability. The site was close to the beach, and ground water is ...
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Integrated 3D physical-numerical modelling for simulating bioremediation of petroleum contamination in heterogeneous subsurface environment
This study presents physical-numerical modelling of petroleum contaminant transport and enhanced in situ bioremediation in heterogeneous subsurface environment. The approach is based on development of a three-dimensional multi-layered physical model coupled with a three-dimensional multiphase multi-component numerical model. An experimental scheme was designed to conduct 40-day benzene transport, ...
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Case Study: Royal Albert Basin, Beckton
The site comprises of five separate areas totalling circa 100 acres of land contaminated by previous uses as inter alia, a dump for gas works wastes, oil storage and distribution, paint production, coal storage, petroleum wharfage etc. The site as a whole is to be redeveloped for mixed residential, commercial and industrial uses with public open space and landscaping to suit. The contract has ...
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Dr. Leo Lemicke presents paper at Battelle bioremediation conference.
In June, Dr. Leo Lemicke presented a paper titled, 'Natural Attenuation: Better Than Groundwater Extraction?' at the Battelle Bioremediation Conference in ...
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Closing Petroleum Sites - Ground Water Bioremediation with Petrox - Case Study
Petrox bioremediation has been used to remediate sites quickly and effectively without negative byproducts. While every site is unique, this case study provides a basis for confidently selecting Petrox bioremediation to close your project. Convenience Store, Hamilton County, Florida, FDEP ID 8518526 After three underground storage tanks were removed from the location of a convenience store, ...
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Protocol for Enhanced In Situ Bioremediation Using Emulsified Edible Oil
An in-depth discussion of the EOS® patented technology and its usefulness for site remediation is presented. Details of how the technology works, design considerations as well as strengths and limitations of the technology are presented. 1.1 INTRODUCTION Management of groundwater contaminated with chlorinated solvents, perchlorate, and explosives is one of the Department of Defense’s ...
By Redox Tech
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Dry CleanersSite, Houston, Texas - Case Study
Site Summary: BioLogix CL bioremediation was implementedat a dry cleaners site in Houston, Texasto reduce residualPCE and other chlorinated solvent concentrations in groundwaterfollowing dual phase vacuum extraction. After application of BioLogix CL®bioremediation the chlorinated solvent concentrations were reduced by 98%to 99% in less than 90 days.In Control Technologies, of Houston, ...
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Nitrate and Perchlorate Bioremediation in Ground Water
In Situ Bioremediation Eliminated Pump and Treat and Ion-Exhange Treatment Cost Site closure reached in less than half the time and at less than half the cost CL-Out bioremediation was implemented at a confidential manufacturing site to remediate nitrate and perchlorate concentrations in soil and ground water. A pump and treatment system was installed and operated for years in immediate response ...
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