Samar Chatterjee

SAFE Foundation
Science & Human Rights

1616 Marion Street NW, #223
Washington, DC
USA
20001
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We are currently involved in several strategic research projects relating to International Conflict Analysis, Development as Peace & Freedom, Environmental Management Plans, Disaster Management Plans, and Nuclear Power Management & Development Policy Issues around the world. Our research focus is devoted to cutting edge analysis and advisory consulting in these critically important fields that have strategic significance to the survival and sustainability of the human civilization as we know it.

Citation:
Nanotechnology to Facilitate Waste Minimization
Abstract: The USEPA is currently developing a systematic research strategy devoted to a careful examination of the Nanotechnology (NT) based environmental cleanup program focused on applications facilitating waste minimization. It has already published a Fact Sheet with a snapshot of NT and its current usage in waste site remediation (USEPA, 2008). Though much of the NT processes are just entering commercialization or are under development, it is evolving quite rapidly and holds promise of cost-effective remediation of challenging waste sites, according to the U. S. EPA.. This paper reviews selected waste treatment options using NT that were found to be effective and also determined to be quite mature. Our analyses of selected nanotechnology based processes for contaminant reduction and contaminant degradation by way of utilizing certain NPs like nZVI, coated nZVI, modified nZVI, bi-metallic nZVI, nTiO2, and nZnO also indicate that significant waste minimization objectives may be achieved in the short and the long run by these carefully selected processes.. However, more detailed study of the environmental fate of all NPs released at disposal should be made an integral part of every NT waste treatment project, as detailed by Breggin and Pendergrass (2007). Besides, every effort should be made to remove NPs from the waste stream by way of adsorption, encapsulation, filtration, and suitable “end of pipe” treatment prior to disposal. These processes have been discussed elsewhere (Chatterjee and Lewinski, 2009) and will also be presented in future publications. An overview of the technological developments to date shows that a vigorous pursuit of the desired source reduction practices are expected to ultimately achieve a more broad based NT-facilitated effective hazardous waste process treatment, some years down the road.. This paper analyses selected contributions of nanotechnology to waste treatment thru contaminant reduction and contaminant degradation by way of utilizing certain NPs such as, nZVI, coated nZVI, modified nZVI, bi-metallic nZVI, nTiO2, and nZnO. A review of these processes indicate that significant waste minimization objectives can be achieved in the short and the long run by utilizing these carefully selected processes. However, more detailed study of the environmental fate of all NPs, released at disposal, should be made an integral part of all NT waste treatment projects. Besides, efforts should be made to remove all NPs from the waste streams by adsorption, encapsulation, filtration, and/or suitable “end of pipe” treatment prior to disposal. These processes have been discussed elsewhere (Chatterjee and Lewinski, 2009) and will be presented in future publications. An example of the contaminant removal thru adsorption on functional nanoporous ceramics, now called Self Assembled Monolayer on Mesoporous Supports or SAMMS, are summarized in Table 6, showing adsorption potential of a few selected SAMMS that are employed for metal sequestration from aqueous solutions..

Substantive Focus:
Education Policy
Energy and Natural Resource Policy PRIMARY
Environmental Policy
Governance
International Relations SECONDARY
Science and Technology Policy
Urban Public Policy

Theoretical Focus:
Policy Process Theory SECONDARY
Policy Analysis and Evaluation PRIMARY

Keywords

HAZARDOUS WASTE MANAGEMENT NUCLEAR WASTE POLICY POLITICS OF INEQUALITY FOREIGN POLICY ANALYSIS SCIENCE & HUMAN RIGHTS