effect of different concentrations of ammonium chloride (ncl) and ammonium nitrate (nn)and surfactants such as tween-80, hpcd and rhamnolipids on the bioremediation of pahs and ocps wasinvestigated. the results showed that the best optimum concentration of ncl and nn was 50 g·kg-1, and thepahs degradation rate during 60 days of remediation was enhanced to 64.6% and 62.8% for ncl and nn,respecti...

The paper presents results of laboratory experiments focused on the efficiency of polychlorinated biphenyls (PCBs) removal by electroremediation, pyrolysis and incineration decontamination methods. The experiments were carried out using soil contaminated with heavy metals and PCBs. Different process parameters were changed during the experiments in order to achieve maximum removal efficiency. C...

ZnO, aside from TiO2, has been considered as a promising material for purification and disinfection of water and air, and remediation of hazardous waste, owing to its high activity, environment-friendly feature and lower cost. However, their poor visible light utilization greatly limited their practical applications. Herein, we demonstrate the fabrication of different aspect ratios of the ZnO n...

Self-sustained Treatment for Active Remediation (STAR) is a thermal remediation technology that uses smouldering, flameless form of combustion, destroying organic contaminants in soil. Injected cold air flowing through the soil to treatment zone supports release sufficient energy maintain self-sustained reaction and propagation contaminated as long airflow local exceeds minimum value. However, ...

Surfactant-enhanced aquifer remediation (SEAR) is widely considered a promising technique to remediate dense nonaqueous phase liquid (DNAPL) contaminations in-situ. The costs of a SEAR remediation are important and depend mostly on the setup of the remediation. Costs can be associated with the installation of injection and extraction wells, the required time of the remediation (and thus labor c...

Title of Thesis: Thermal Modeling and Analysis of Three-Dimensional (3D) Chip Stacks Christopher Bachmann, Master of Science, 2007-09-11 Thesis Directed by: Avram Bar-Cohen and Jungho Kim Mechanical Engineering Department Three-dimensional (3D) chip architectures have garnered much research interest because of their potential to alleviate the interconnect delay bottleneck that is expected to li...

Persistent free radicals (PFRs) are emerging contaminants of increasing concern, yet their formation, fate, toxicity and health risk poorly known. Thermal treatment, a common remediation technique to clean industrial soils, induces the formation PFRs, which could paradoxically increase soil toxicity, contrary original objective remediation. Actually, there is little knowledge on PFRs in soils c...

INTRODUCTION Remediating failing medical learners has traditionally been a craft activity responding to individual learner and remediator circumstances. Although there have been moves towards more systematic approaches to remediation (at least at the institutional level), these changes have tended to focus on due process and defensibility rather than on educational principles. As remediation pr...

A fuzzy simulation-based optimization approach FSOA is developed for identifying optimal design of a benzene-contaminated groundwater remediation system under uncertainty. FSOA integrates remediation processes i.e., biodegradation and pump-and-treat , fuzzy simulation, and fuzzy-mean-value-based optimization technique into a general management framework. This approach offers the advantages of 1...