Remediation and Reuse of Chromium Contaminated Soils Through Cold Top Ex-site Vitrification PDF Download
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Author: Wiwat Kamolpornwijit
Publisher:
ISBN:
Category : Chromium
Languages : en
Pages : 134
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Book Description
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.
Author: Wiwat Kamolpornwijit
Publisher:
ISBN:
Category : Chromium
Languages : en
Pages : 134
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Book Description
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.
Author: Gerald Charleston
Publisher:
ISBN:
Category : Hazardous substances
Languages : en
Pages : 118
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Book Description
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.
Author:
Publisher:
ISBN:
Category : Soil remediation
Languages : en
Pages : 22
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Book Description
Author: Weichun Yang
Publisher: Springer Nature
ISBN: 9819954630
Category : Science
Languages : en
Pages : 311
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Book Description
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.
Author: National Risk Management Research Laboratory (U.S.)
Publisher:
ISBN:
Category : Chromium
Languages : en
Pages : 100
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Book Description
Author: James E. Kilduff
Publisher: CRC Press
ISBN: 9781587160264
Category : Science
Languages : en
Pages : 944
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Book Description
Author: Paul T. Kostecki
Publisher: CRC Press
ISBN: 9780849311574
Category : Technology & Engineering
Languages : en
Pages : 266
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Book Description
The importance of understanding complex toxicological and chemical properties of hexavalent and trivalent chromium has increased rapidly over the last few years as state and federal regulators reevaluate environmental standards. The risk management of chromium-contaminated soils continues to be a very dynamic process that presents interesting challenges. Chromium in Soil discusses the challenges faced by those investigating and remediating chromium-impacted soils and groundwater. The chapters address numerous ground-breaking developments in various fields of environmental chromium research, including toxicity, chemistry, environmental fate and transport, remediation technology, and health-based cleanup standards.
Author:
Publisher:
ISBN:
Category : Environmental geotechnology
Languages : en
Pages : 228
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Book Description
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Book Description
Author: Jay N. Meegoda
Publisher: American Society of Civil Engineers
ISBN:
Category : Science
Languages : en
Pages : 152
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Book Description
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.
