bioremedial treatment Articles
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Inhibition of bacterial perchlorate reduction by zero-valent iron
Perchlorate was reduced by a mixed bacterial culture over a pH range of 7.0–8.9. Similar rates of perchlorate reduction were observed between pH 7.0 and 8.5, whereas significantly slower reduction occurred at pH 8.9. Addition of iron metal, Fe(0), to the mixed bacterial culture resulted in slower rates of perchlorate reduction. Negligible perchlorate reduction was observed under abiotic ...
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Surfactant enhanced aquifer remediation (SEAR) using Ivey-sol surfactant technology
This paper will focus on the application of Ivey-sol non-ionic surfactant technology to improve the in-situ remediation of petroleum hydrocarbon contamination is soil and bedrock aquifers. Normally hydrophobic organic chemicals (HOC) exhibit limited solubility in groundwater as the contaminants tend to partition onto the soil and bedrock matrix. This partitioning can account for as much as ...
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TerraStryke TPHenhanced Residual Source Mass Remediation Abandoned Oil-Gas Production Facility - Petroleum Hydrocarbons, BTEX Legacy Production Water Retention Pond, Colorado - Case Study
TerraStryke Remediation Products LLC (TerraStryke) develop and distribute biostimulation additives which cost-effectively enhance native microbials and are proven to expedite the natural attenuation and destruction of dissolved phase and residual source mass contaminants. Our additives represent a quantum leap forward in bioremediation practices. Procedures: The treatment area consists of an ...
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MICROBE-LIFT® Technology Helps Remediate TPH Contaminated Soils in Georgia and Tennessee - WASTEWATER TREATMENT
PCS Nitrogen, a business unit of Potash Corporation of Saskatchewan, is one of the largest producers of nitrogen worldwide. It produces nitrogen fertilizers and feed ingredients from three manufacturing facilities in the US and one in Trinidad. When they experienced heavy contamination of soils with hydrocarbon and TPH compounds at two of their facilities, they utilized Ecological ...
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MB Bioremediation - Case Study
Patented dry product delivering billions of live non-genetically modified microorganisms for bioremediation of oil, gasoline, diesel, grease or any other hydrocarbon based contamination. MB Bioremediation Drill Cutting Remediation Emergency Public Area Clean-up & Treatment Industrial Remediation Oil Production Pit Remediation Storage Tank Farm Remediation Production Water ...
By Drylet, Inc.
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Biotechnology of hydrocarbon bioremediation in soil washing slurry
Application of Bioremediation for low cost contaminated soil washing slurry treatment with quick hydrocarbon reduction and improved sustainability. The application uses proprietary microbial formulation with a slurry bioreactor in order to accelerate the degradation process and to make it compatible with soil washing technology. The end result is a treated soil which meets the requirements for ...
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Bioaugmentation is a cost-effective and sustainable remediation alternative
Selecting a remediation alternative that is compatible with the natural soil and ground water conditions is not only a more sustainable approach, but leads to significant savings. Comparison between bioaugmentation and other remediation methods in the five recognized sustainability criteria demonstrates the advantages of bioaugmentation. While this paper is nota complete quantitative analysis, it ...
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A Citizen`s Guide to Natural Attenuation
What is natural attenuation?Natural attenuation makes use of natural processes to contain the spread of contamination from chemical spills and reduce the concentration and amount of pollutants at contaminated sites. Natural attenuation—also referred to as intrinsic remediation, bioattenuation, or intrinsic bioremediation—is an in situ treatment method. This means that environmental contaminants ...
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CETP Bangladesh Biological System Restoration with Microbe-Lift® Remediation - WASTEWATER TREATMENT
The biological system managed to reduce COD from 1000 mg/L to about 300 mg/L from original value of 1000 mg/L to 700 mg/L within one month of MICROBE-LIFT® bioaugmentation. The reduced COD before ECR treatment reduced the ECR electricity and steel plate consumption by 60%. The post ECR sludge was also reduced by half, thereby PAC and sludge disposal cost. Sludge disposal cost is not high, but ...
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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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Biotreatment of waste gas containing pyridine in a novel rotating rope biofilter
A novel Rotating Rope Biofilter (RRB) has been developed especially for the treatment of Volatile Organic Compounds (VOCs) at higher loadings and characterised by high volatility along with high water solubility. The RRB provides a higher interfacial area (per unit reactor liquid volume) along with high oxygen mass transfer rate, greater microbial culture stability, and consequently higher ...
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An Introduction to Bioremediation and its Applications
A variety of toxic chemicals, metals, and effluents are created and used in industrial processes. These elements need to be degraded to ensure that they do not harm the environment when disposed. A specialized process and equipment are required to perform this task. This is where bioremediation comes in. What is Bioremediation, and what are its Types? In simple terms, bioremediation is a ...
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Anaerobic hybrid reactor: a promising technology for treatment of distillery spent wash
A laboratory-scale study was conducted to investigate the performance of anaerobic hybrid (combining sludge blanket and filter) and UASB (Upflow Anaerobic Sludge Blanket) reactors for the treatment of distillery spent wash. The start-up and granulation study demonstrated that early start-up and granulation were achieved in case of hybrid reactor (45 days) as compared with UASB reactor (60 days). ...
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The no. 1 choice for improving the performance of soil and groundwater remediation
Adsorption of Contamination The number one challenge associated with most site remediation designs and methodologies is that 90% to 95% of all environmental contaminants; including hydrocarbons (LNAPL), chlorinates (DNAPL), and heavy metals; are present in a sorbed (i.e., absorbed or adsorbed) phase onto soil and bedrock surfaces within both saturated and unsaturated zones. As such, the absorbed ...
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Bioremediation/natural attenuation continues after ISCO treatment
Scientists and engineers from the private sector and EPA are evaluating the potential for in situ bioremediation and/or natural attenuation to successfully treat residual soil and ground-water contamination after source-area in situ chemical oxidation (ISCO) treatment. The studies were prompted by concerns that the two treatment technologies may be incompatible due to detrimental impacts on ...
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Biopiles
Biopile treatment is a full-scale technology in which excavated soils are mixed with soil amendments and placed on a treatment area that includes leachate collection systems and some form of aeration. It is used to reduce concentrations of petroleum constituents in excavated soils through the use of biodegradation. Moisture, heat, nutrients, oxygen, and pH can be controlled to enhance ...
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Performance of membrane bioreactor to different hydraulic shock loadings
A Membrane Bioreactor (MBR) treating simulated sewage was operated and stabilised for a period of 60 days at an organic loading rate of 3.6 g/COD/day and Hydraulic Retention Time (HRT) of 8 h, during which the MBR showed 95% removal of Chemical Oxygen Demand (COD), 98% removal of Total Organic Carbon (TOC) and TSS, 91% removal of Total Kjeldahl Nitrogen (TKN) and 30% removal of phosphate. The ...
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Semifield testing of a bioremediation tool for atrazine‐contaminated soils: Evaluating the efficacy on soil and aquatic compartments
The present study evaluated the bioremediation efficacy of a cleanup tool for atrazine‐contaminated soils (Pseudomonas sp. ADP plus citrate [P. ADP + CIT]) at a semifield scale, combining chemical and ecotoxicological information. Three experiments representing worst‐case scenarios of atrazine contamination for soil, surface water (due to runoff), and groundwater (due to leaching) were performed ...
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Membrane-integrated hybrid bioremediation of industrial wastewater: a continuous treatment and recycling approach
A new membrane-integrated hybrid treatment system was investigated to turn highly hazardous coke wastewater reusable. This could protect both air and surface water bodies from toxic contaminants such as ammonia, phenol, cyanide, thiocyanate and other carcinogenic aromatic compounds which are normally released into the environment during discharge of coke wastewater and during quenching of coke ...
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PCE Aerobic Bioremediation by Key-Hole Source Removal
CL-Out aerobic PCE bioremediation in a keyhole treatmentreduced the mass of contamination near the source and down gradient concentrations in the plume. At a former manufacturing facility in Ohio the concentration of PCE near the source was over 100,000 ug/L. Down gradient of the source the PCE concentrations were less than 10% of the source concentration. Aggressive treatment in the source ...
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