Textile dye adsorption employing Bio-nano-ferromagnetic composite with subsequent ...
| Grant number: | 10/01287-3 |
| Support type: | Regular Research Grants |
| Duration: | June 01, 2010 - May 31, 2012 |
| Field of knowledge: | Engineering - Chemical Engineering |
| Principal Investigator: | Valquiria de Campos |
| Grantee: | Valquiria de Campos |
| Home Institution: | Universidade Estadual Paulista (UNESP). Campus Experimental de Sorocaba. Sorocaba , SP, Brazil |
| Assoc. researchers: | Admilson Írio Ribeiro ; André Henrique Rosa ; Antonio Carlos Silva Costa Teixeira ; Celize Maia Tcacenco ; Leandro Cardoso de Morais ; Marilda Mendonça Guazzelli Ramos Vianna ; Pedro Mauricio Büchler |
Abstract
The environmental health assessment of contaminated sites from hazardous wastes is an integrant part of the process of contaminated land management and a result from public health and ecosystems risk management, which uses data from risk assessments, besides taking into consideration other factors as federal and state regulations, funds, treatment technologies and integration with the community. Recent groundwater remediation research efforts have focused upon developing innovative, in-situ methods for treating impacted aquifer zones. One such method is the use of permeable reactive barriers (PRB). These systems entail placing reactive materials into the subsurface to passively intercept a groundwater plume and treat the dissolved contaminants as they flow through the barrier. Target plumes for this treatment method are often not easily accessible via conventional construction techniques, therefore new installation methods have been developed. However, many questions arise regarding how these PRB emplacement methods may affect ultimate wall performance. To address these questions, numerical modeling will be performed to simulate groundwater flow through a reactive barrier and to calculate hydraulic plume capture. Variations in wall hydraulic conductivity, the subsurface and seasonal changes in aquifer hydraulic gradient and flow direction will be investigated. Results from the model simulations will provide a conceptual understanding of how changes in PRB design parameters may affect the hydraulic capture performance for a pilot-scale, deep, injected continuous PRB treatment wall including treatment through AOP. Use of zeolite and organoclays as a sorbent in a subsurface permeable barrier will be evaluated. In this study the efficiency of advanced oxidative processes (AOP) also will be investigated toward the degradation of aqueous solutions containing PAH. (AU)