Download or read book Enhanced Bioremediation of Petroleum Contaminated Soils Using an Engineered Bioreactor Design CFB Petawawa Petawawa Ontario written by Dan M. McNicoll and published by . This book was released on 1994 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Total petroleum hydrocarbon concentrations in the bioreactor soils were found to have been reduced by 97%.
Download or read book Enhanced Bioremediation of Petroleum Contaminated Soils Using an Engineered Bioreactor Design CFB Petawawa Petawawa Ontario written by Dan M. McNicoll and published by . This book was released on 1994 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Total petroleum hydrocarbon concentrations in the bioreactor soils were found to have been reduced by 97%.
Download or read book Bioremediation of Petroleum and Radiological Contaminate Soil Using an Ex Situ Bioreactor written by Christopher John Berry and published by . This book was released on 2005 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The Savannah River Site (SRS), a Department of Energy facility, generated non-hazardous petroleum and radiological co-contaminated soils that did not have a disposal pathway. The purpose of this project was to generate treatment data and test the hypothesis that an engineered biological process could safely and efficiently remove petroleum co-contamination from radiological contaminated soil. Demonstration of the treatment would allow the soils to be disposed as low-level radiological materials. Although radiation and radiological contamination may, depending on the type and level, impact microbial activity and growth, the impact of low levels of radiation were not expected to impact the biodegradation of petroleum contaminated soils. Important parameters identified for successful biological treatment included oxygen mass transfer, bioavailability, temperature, microbiological capabilities, nutrients, and moisture. System design was based on a bioventing approach to control the supply of oxygen (air) based on petroleum contamination levels and type of soil being treated. Before bioremediation began, a bioreactor system was permitted, designed, constructed, and tested. An operating permit was obtained from SCDHEC, as were approvals required by the SRS. The design was based on bioventing principles and used a modified prefabricated skid-pan, which was constructed by SRNL. System operation included formulating a test plan, developing and using system sampling and monitoring methods, loading the system, starting up operations, obtaining results, modifying operation, and final disposal of the soil after the bioremediation goal was achieved. The PRCS bioreactor operated for 22 months in various configurations treating the contaminated soil to a final TPH concentration of 45 mg/kg. During operation, degradation of over 20,000 mg/kg of waste was accounted for through monitoring of carbon dioxide levels in the effluent. System operation worked best when soil temperatures were above 15 ðC and the pumps were operated continuously. The low level radiological contaminated soil was disposed in an engineered trench at SRS that accepts this type of waste. The project demonstrated that co-contaminated soils could be treated biologically to remove petroleum contamination to levels below 100 mg/kg while protecting workers and the environment from radiological contamination.
Download or read book Bioremediation of Petroleum and Radiological Contaminated Soils at the Savannah River Site written by and published by . This book was released on 2004 with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the process of Savannah River Site (SRS) operations limited amounts of waste are generated containing petroleum, and radiological contaminated soils. Currently, this combination of radiological and petroleum contaminated waste does not have an immediate disposal route and is being stored in low activity vaults. SRS developed and implemented a successful plan for clean up of the petroleum portion of the soils in situ using simple, inexpensive, bioreactor technology. Treatment in a bioreactor removes the petroleum contamination from the soil without spreading radiological contamination to the environment. This bioreactor uses the bioventing process and bioaugmentation or the addition of the select hydrocarbon degrading bacteria. Oxygen is usually the initial rate-limiting factor in the biodegradation of petroleum hydrocarbons. Using the bioventing process allowed control of the supply of nutrients and moisture based on petroleum contamination concentrations and soil type. The results of this work have proven to be a safe and cost-effective means of cleaning up low level radiological and petroleum-contaminated soil. Many of the other elements of the bioreactor design were developed or enhanced during the demonstration of a ''biopile'' to treat the soils beneath a Polish oil refinery's waste disposal lagoons. Aerobic microorganisms were isolated from the aged refinery's acidic sludge contaminated with polycyclic aromatic hydrocarbons (PAHs). Twelve hydrocarbon-degrading bacteria were isolated from the sludge. The predominant PAH degraders were tentatively identified as Achromobacter, Pseudomonas Burkholderia, and Sphingomonas spp. Several Ralstonia spp were also isolated that produce biosurfactants. Biosurfactants can enhance bioremediation by increasing the bioavailability of hydrophobic contaminants including hydrocarbons. The results indicated that the diversity of acid-tolerant PAH-degrading microorganisms in acidic oil wastes may be much greater than previously demonstrated and they have numerous applications to environmental restoration. Twelve of the isolates were subsequently added to the bioreactor to enhance bioremediation. In this study we showed that a bioreactor could be bioaugmented with select bacteria to enhance bioremediation of petroleum-contaminated soils under radiological conditions.
Download or read book Bioremediation of Petroleum Contaminated Sites written by RiseR-RobeRts and published by CRC Press. This book was released on 1992-07-15 with total page 496 pages. Available in PDF, EPUB and Kindle. Book excerpt: Bioremediation of Petroleum Contaminated Sites provides important background information on the major aspects of technologies and related research dealing with the use of biodegradation for treating environmental contamination by toxic organic substances. The book can be used as a broad reference base for developing programs for in situ biorestoration of fuel contaminated soil and groundwater. A detailed appendix includes supplementary technical information for readers needing in-depth information. Bioremediation of Petroleum Contaminated Sites is an excellent reference for managers, consultants, regulators, hazardous waste professionals, contractors, students, and environmental researchers.
Download or read book Enhanced Bioremediation of Petroleum Contaminated Soils written by Srinivas Rao Reddy and published by . This book was released on 1992 with total page 160 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book CIM Bulletin written by Canadian Institute of Mining and Metallurgy and published by . This book was released on 1997 with total page 600 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Enhanced Bioremediation of Petroleum Hydrocarbon Contaminated Soil written by Z. Abedin and published by . This book was released on 1994 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Enhanced Petroleum contaminated Soil Bioremediation by Plants written by Ziad D. Al-Ghazzawi and published by . This book was released on 1995 with total page 310 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Enhanced Bioremediation of a Soil Contaminated with Both Petroleum Hydrocarbons and Heavy Metals with In soil Biosurfactant Production written by Faramarz Jalali and published by . This book was released on 2007 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Soils that are co-contaminated with petroleum hydrocarbons and metals account for 55% of all hazardous waste sites and are hard to decontaminate because of the different nature of the remedial treatment required. Biosurfactant-producing microorganisms are present in many environments and can be stimulated to produce them under favorable conditions. This dissertation investigates the effect of biosurfactant production by indigenous microorganisms of a co-contaminated soil. A soil that was heavily contaminated with petroleum hydrocarbons and metals was acquired from the Toronto Harbour area. Phase one of the study evaluated the extent of the biodegradation of organic pollutants as well as the feasibility of biosurfactant production by the produced microorganisms. Results show that by the end of the experiment (50 days) batches amended with nutrients produced biosurfactants up to 3 times their critical micelle concentration (CMC). The produced surfactants caused the concentration of TPH and metals in the filtrate to increase from 2 to 8% and from 2 to 4%, respectively. In the phase two of the experiments the production of biosurfactants was enhanced by 40% by limiting the inorganic source of nitrogen in the batches, following a short growth phase. The produced biosurfactants were able to wash 10% of TPH and 6% of the metal content of the soil. The results indicate that biosurfactants can be produced by the indigenous soil microorganisms using organic contaminants as the sole carbon source. Furthermore, the produced biosurfactants showed potential to enhance biodegradation of petroleum hydrocarbons as well as to improve flushing of the remaining soil pollutant from soil.
Download or read book Biodegradation and Bioremediation written by Ajay Singh and published by Springer Science & Business Media. This book was released on 2013-03-09 with total page 332 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this volume, experts from universities, government labs and industry share their findings on the microbiological, biochemical and molecular aspects of biodegradation and bioremediation. The text covers numerous topics, including: bioavailability, biodegradation of various pollutants, microbial community dynamics, properties and engineering of important biocatalysts, and methods for monitoring bioremediation processes. Microbial processes are environmentally compatible and can be integrated with non-biological processes to detoxify, degrade and immobilize environmental contaminants.
Download or read book Terrorism and WMDs written by John Pichtel and published by CRC Press. This book was released on 2016-09-15 with total page 419 pages. Available in PDF, EPUB and Kindle. Book excerpt: Terrorism and WMD’s, Second Edition provides a comprehensive, up-to-date survey of terrorism and weapons of mass destruction (WMDs). Terrorist weapons and delivery methods are becoming increasingly sophisticated; as such, this book focuses on the chemistry and biology of WMDs, the development and history of their use, and human health effects of such weapons. Coverage of new threats, additional case studies, and the emergence of ISIL—and other terrorist actors—have been added to the new edition which will serve as an invaluable resources to students and professionals studying and working in the fields of terrorism, Homeland Security, and emergency response.
Download or read book Military Explosives written by Ordnance Department and published by Legare Street Press. This book was released on 2022-10-27 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work is in the "public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.
Download or read book Defence Sites written by C. Clark and published by WIT Press. This book was released on 2012 with total page 301 pages. Available in PDF, EPUB and Kindle. Book excerpt: " ... some of the papers presented at the 1st International Conference on Defence Sites: Heritage and Future held in Portsmouth"--Preface.
