Cosmopolitan Sentiment: Politics, Charity, and Global Poverty

Duties to address global poverty face a motivation gap. We have good reasons for acting yet we do not, at least consistently. A ‘sentimental education’, featuring literature and journalism detailing the lives of distant others has been suggested as a promising means by which to close this gap (Nussbaum in Upheavals of Thought: The Intelligence of Emotions, CUP, Cambridge, 2001; Rorty in Truth and Progress: Philosophical Papers, vol. 3, CUP, Cambridge, 1998). Although sympathetic to this project, I argue that it is too heavily wed to a charitable model of our duties to address global poverty—understood as requiring we sacrifice a certain portion of our income. However, political action, aimed at altering institutions at both a global and a local level is likely to be necessary in order to provide effective long-term solutions to poverty globally. To rectify this, the article develops an alternative dialogical account of sentimental education, suitable for motivating support for political action to address global poverty

Development of Chemical Reduction and Air Stripping Processes to Remove Mercury from Wastewater

This study evaluates the removal of mercury from wastewater using chemical reduction and air stripping using a full-scale treatment system at the Savannah River Site. The existing water treatment system utilizes air stripping as the unit operation to remove organic compounds from groundwater that also contains mercury (C ~ 250 ng/L). The baseline air stripping process was ineffective in removing mercury and the water exceeded a proposed limit of 51 ng/L. To test an enhancement to the existing treatment modality a continuous dose of reducing agent was injected for 6-hours at the inlet of the air stripper. This action resulted in the chemical reduction of mercury to Hg(0), a species that is removable with the existing unit operation. During the injection period a 94% decrease in concentration was observed and the effluent satisfied proposed limits. The process was optimized over a 2-day period by sequentially evaluating dose rates ranging from 0.64X to 297X stoichiometry. A minimum dose of 16X stoichiometry was necessary to initiate the reduction reaction that facilitated the mercury removal. Competing electron acceptors likely inhibited the reaction at the lower 1 doses, which prevented removal by air stripping. These results indicate that chemical reduction coupled with air stripping can effectively treat large-volumes of water to emerging part per trillion regulatory standards for mercury