Download or read book Remediation and Reuse of Chromium Contaminated Soils Through Cold Top Ex site Vitrification written by Wiwat Kamolpornwijit and published by . This book was released on 1996 with total page 134 pages. Available in PDF, EPUB and Kindle. Book excerpt: More than 150 sites in Hudson County, New Jersey are identified as chromium contaminated sites. Hexavalent chromium, highly soluble in water, is considered as an environmental and health hazard, classified as a group A human carcinogen. In this research, the feasibility was performed to study the possibility of remediation of chromium contaminated soil by ex-situ vitrification and to evaluate reuse potential of vitrified products as highway construction aggregate. A series of physical and chemical analysis was conducted on nine soil samples collected from different chromium contaminated sites. Results were analyzed for their compatibility for vitrification. Sand and carbon were added to enhance vitrification process. Vitrification was performed and the vitrified products were subjected to further chemical and physical tests. TCLP chromium concentration results verified a successful remediation. The vitrified product properties complied with the New Jersey Department of Transportation standards, designating high reuse potential.

Download or read book Reuse of Cold Top Ex situ Vitrified Chromium Contaminated Soils in Hot Mix Asphalt Concrete written by Gerald Charleston and published by . This book was released on 1998 with total page 118 pages. Available in PDF, EPUB and Kindle. Book excerpt: This research investigated the pilot scale feasibility of the remediation of chromium contaminated soil through cold top ex-situ vitrification and the reuse of the vitrified products as highway construction aggregates. There are more than two million tons of chromite ore residues from the chromate extraction manufacturing leftover in Hudson County, New Jersey. They contained both un-leached hexavalent and unoxidized trivalent chromium. Hexavalent chromium is well known as a group A human carcinogen. It is also considered an environmental and health hazard. Of the many ex- situ and in-situ physical, chemical, and biological treatment technologies for chromate production waste, the ability to reduce hexavalent chromium to trivalent chromium and at the same time inhibit the reversal back to hexavalent chromium as well as being able to demonstrate long-term, low toxic metal leaching characteristics is a critical criteria for technology evaluation. Cold top ex-situ vitrification has been identified to satisfy the above criteria as a highly cost effective and environmentally sound physical treatment. The toxicity characteristic leaching process (TCLP) test results confirmed the effectiveness of the treatment technology. This research describes test results of the use of the vitrified material as aggregate in hot mix asphalt. The physical properties of vitrified chromium contaminated soils were compared with the New Jersey Department of Transportation (NJDOT) specifications for aggregates to evaluate the reuse potential as a construction material. The crushed vitrified contaminated soils met all the desired NJDOT specifications for aggregates. The inclusion of those aggregates in hot mix asphalt concrete produced NJDOT acceptable mix. The freeze/thaw and wet/dry durability tests and permeability tests produced acceptable values for specimens made from both mixes at optimum asphalt contents. From the test results it can be concluded that the vitrified material can be used in the production of asphalt concrete providing less than 60% vitrified material is included in the mix.

Download or read book Technology Alternatives for the Remediation of Soils Contaminated with As Cd Cr Hg and Pb written by and published by . This book was released on 1997 with total page 22 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Remediation of Chromium Contaminated Soil Theory and Practice written by Weichun Yang and published by Springer Nature. This book was released on 2023-10-03 with total page 311 pages. Available in PDF, EPUB and Kindle. Book excerpt: In accordance with the global needs of heavy metal-contaminated site remediation, this book systematically introduces the latest theories and technical achievements of microbial and chemical treatment for the chromium pollution in the chromium slag and chromium-contaminated soil, combined with the author's research achievements over the decades. The book focuses on the biological and chemical behavior of chromium in soil, microbial, and chemical remediation for the chromium-contaminated soil and the cases of chromium-contaminated site remediation project. This book is used by the scientific researchers and engineering technicians engaged in chromium chemical industry and environmental protection. It is also used as a textbook and reference book for graduate students in environmental science and engineering, soil science, chemistry and chemical engineering, and other related fields.

Download or read book In Situ Treatment of Soil and Groundwater Contaminated with Chromium written by National Risk Management Research Laboratory (U.S.) and published by . This book was released on 2000 with total page 100 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Hazardous and Industrial Waste Proceedings 32nd Mid Atlantic Conference written by James E. Kilduff and published by CRC Press. This book was released on 2000-06-26 with total page 944 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book 4th International Symposium on Environmental Geotechnology and Global Sustainable Development written by and published by . This book was released on 1998 with total page 228 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Die sowjetische metro written by and published by . This book was released on 1958 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Hazardous and Industrial Waste Proceedings 27th Mid Atlantic Conference written by Arup K. SenGupta and published by CRC Press. This book was released on 1995-07-06 with total page 978 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Superfund Innovative Technology Evaluation written by and published by . This book was released on 1996 with total page 544 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Engineered Contaminated Soils and Interaction of Soil Geomembranes written by Jay N. Meegoda and published by American Society of Civil Engineers. This book was released on 1996 with total page 152 pages. Available in PDF, EPUB and Kindle. Book excerpt: Due to liability issues, landfills are no longer considered the best method of waste disposal. Innovative, safe disposal methods for large quantities of contaminated soils and waste are sought by engineers. In urban or industrial areas with most of the contamination, it has become very attractive to engineer contaminated soils and waste by physical or chemical methods and reuse them as construction materials. This proceedings addresses the following: the creation of useful products from contaminated soils and waste; changes in soil or waste properties after processing; logistics of the operations; and the regulatory issues associated with such usage. While alternative methods of disposal are being utilized, civil engineers are still involved in the development of large containment systems and must continue to increase their knowledge of these systems. Solid-waste landfills are made of multi-layered soil and geosynthetic liner systems underlying the fills and providing surface coverage. to a large degree by the shear strengths developed at interfaces between the soils and the geosynthetics forming part of either the liner or the cover systems. In this proceedings, recent research efforts to measure the interface strength between geomembranes and soils are presented.

Download or read book Vitrification Technologies for Treatment of Hazardous and Radioactive Waste written by and published by . This book was released on 1992 with total page 104 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Implementation of in Situ Vitrification Technology for Remediation of Oak Ridge Contaminated Soil Sites written by and published by . This book was released on 1993 with total page 13 pages. Available in PDF, EPUB and Kindle. Book excerpt: In situ vitrification is a thermal treatment technology being developed for remediation of contaminated soils. The process transforms easily leached, contaminated soils into a durable, leach-resistant. vitreous and crystalline monolith. This paper presents the results of the recent highly successful ISV demonstration conducted jointly by PNL and ORNL on a tracer-level quantity of radioactive sludge in a model trench at ORNL. A retention of [sup 90]r in the vitreous and crystalline product of greater than 99.9999% was measured with a reduction in potential environmental mobility of more than two orders of magnitude. The paper also presents the current plans for continued collaboration on a two-setting treatability test on one portion of an old seepage pit at ORNL.

Download or read book Development of in Situ Vitrification for Remediation of ORNL Contaminated Soils written by and published by . This book was released on 1994 with total page 7 pages. Available in PDF, EPUB and Kindle. Book excerpt: A full-scale field treatability study of in situ vitrification (ISV) is underway at the Oak Ridge National Laboratory (ORNL) for the remediation of radioactive liquid waste seepage pits and trenches that received over one million curies of mixed fission products (mostly 137Cs and 9°Sr) during the 1950s and 1960s. The treatability study is being conducted on a portion of the original seepage pit and will support an Interim Record of Decision (IROD) for closure of one or more of the seven seepage pits and trenches in early fiscal year (FY) 1996. Mr treatability study will establish ft technical performance of ISV for remediation of the contaminated soil sites. Melt operations at ORNL are expected to begin in early FY 1994. This paper presents the latest accomplishments of the project in preparation for the field testing. Discussion centers on the results of a parametric crucible melt study, a description of the site characterization efforts, and the salient features of a new hood design.

Download or read book In Situ Treatment of Soil and Groundwater Contaminated with Chromium written by and published by . This book was released on 2002-07-01 with total page 84 pages. Available in PDF, EPUB and Kindle. Book excerpt: Contamination of soil & groundwater by chromium is a significant problem in the U.S. The poor performance of pump-&-treat systems in the mid-1980s provided the driving force for research of subsurface processes in order to develop more efficient groundwater remediation strategies & techniques. As a result, new information & treatment approaches have been developed for chromium-contaminated soil & groundwater treatment. This document brings together the most current information pertaining to the science of chromium contamination & the treatment & control of sites with groundwater &/or soil contaminated with it. List of acronyms, abbreviations, & symbols. Charts & tables.

Download or read book Remediation of Chromium Contaminated Soils by Selected Hydrometallurgical Techniques written by Albert S. Tomlinson and published by . This book was released on 1997 with total page 280 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Remediation Options for a Chromium Contaminated Landfill Using Cementitious Grouts written by and published by . This book was released on 1995 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt: In-situ remediation of a chemical waste landfill with excessive chromium levels is being investigated as part of the Mixed Waste Landfill Integrated Demonstration. This paper is concerned with the design of advanced cementitious grouts for in-situ stabilization of chromium contaminated soil and in-situ installation of subsurface containment barriers. Grouts have been developed to improve the performance and cost effectiveness of remediation compared with conventional materials. In addition to restoration of chromium contaminated soils, the developed grouts have applications in other environmental operations where superior properties are required.