Environmental Sciences Commons^™

Microwave Treatment Of Hazardous Wastes : Feasibility Studies-Mass Balances, Liu Liu

Theses

This laboratory has been developing processes for the remediation of soils contaminated with hazardous wastes using microwave treatment. The initial stage was to define situations in which microwave treatment could potentially have unique advantages, and to define the relevant physical chemical mechanisms. That having been accomplished, at the present stage, feasibility studies are being carried to determine whether or not on-site field testing is justified. To that end, mass balances on the processes are needed. In this study mass balance studies were carried out on the microwave assisted steam distillation of volatile organic chemicals (VOCs) and semi-volatile organics (SVOCs), respectively, …

Recalcitrance Of Polychlorinated Biphenyls To Biodegradation By Phanerochaete Chrysosporium In Soil, Thierry B. Poncet

Theses

The white rot fungus Phanerochaete chrysosporium has been shown in the past to effectively degrade a number of chlorinated aromatic compounds. Previous investigators (Eaton, D. C., "Mineralization of Polychlorinated Biphenyls by Phanerochaete chrysosporium, a Lignolytic Fungus", Enz. Microb. Technol., 7, 194-196 (1985); Bumpus, J. A., Tien, M., Wright, D., and Aust, S. D., "Oxidation of Persistent Environmental Pollutants by White Rot Fungus", Science, 228, 1434-1436 (1985)) have also claimed that this fungus is capable of mineralizing polychlorinated biphenyls (PCBs) in submerged cultures under stationary conditions. Therefore, the objective of this work was to study the biodegradation activity of the fungus …

Microwave Treatment Of Hazardous Wastes : Chemical Fixation Of Insoluble Non-Volatile, Chemically Non-Reactive Organics In Soil, Naihong Zhu

Theses

Microwave treatment of hazardous wastes like dioxin-contaminated soil potentially fills a great need for a remediation technology which potentially can be applied in-situ: the EPA has concluded from a risk assessment study that it is the excavation and transportation of such wastes that poses the greatest risk. Studies have been carried out on a surrogate for dioxin, namely, 9,10-anthraquinone because it has similar chemical and physical properties but it is not toxic. It was found in microwave treatment studies that, at temperatures attainable in-situ, anthraquinone became non-extractable. A model was proposed which postulated that as water was removed from soil …

Thermal Desorption Of Hazardous And Toxic Organic Compounds From Sand Matrices, Jaeil Kwon

Theses

Incineration processes are effective and sometimes efficient technologies for the remediation of contaminated solids which result in permanent destruction of most organic hazardous compounds. A less energy intensive, but more efficient process to remove contaminants from the soil is the application of heat and a flow of inert gas where the entire soil mass is not heated to incineration temperatures. This thermal treatment increases volatilization and often effects complete removal of organic compound depending on soil conditions and species volatility,

The goals of this research are to develop an understanding of the mass transport phenomena and adsorption thermodynamics that control …

Degradation Of Refractory Organic Pollutants In Tar, Water And Soil Matrices By Ozone Or Hydrogen Peroxide With Ultraviolet Light, Liang-Jiun Uang

Theses

The objective of this research is to develop a method to degrade refractory Tar materials, higher molecular weight 3-5 ring Poly Aromatic Hydrocarbons (PAH's) or degrading these highly refractory PAH structures so that they are amenable to further treatment by biological or chemical methods. The process utilized to achieve this is to treat contaminated soils or tar materials with hydrogen peroxide or ozone plus ultraviolet light. Analysis of 27 specific PAH's was done by gas chromatograph (Flame Ionization Detection) for the reactants and products. The contaminated soil showed significantly lower levels of these PAH's after treatment.

Microwave Treatment Of Organic Contaminated Soil, Suning Fan

Theses

The development of microwave technology to treat hazardous wastes hasbeen in progress at NJIT for the past three years. The initial stagesof this program have focused on determining the' breadth of hazardouswaste problems that are amenable to microwave technology applications.Benchscale studies have shown the following processes are technicallypossible:

a. It is possible to steam strip organic volatiles from soil;

b. Volatiles can be destroyed by impact upon lossy so lids

c. Heavy metal ions can be immobilized in soil;

d. It is possible to regenerate GAC on-site.

e. It is possible to pyrolyze polyarmotic compounds in soil in-site,and, thereby, effect …