Extraction of copper from solution after bioleaching of printed circuit boards (PCBs)

The solvent extraction of copper and iron from bioleaching solutions of PCBs with LIX 860N-IC and next stripping test with H2SO4 were investigated. In test the effect of varying sulfuric acid concentration on stripping rate of Cu and Fe and also phase ratio (O : A) were determined. It was found that the stripping rate of copper increases with the sulfuric acid concentration. The optimal concentration of H2SO4 is suggested to be about 150 g/L and phase ratio O:A = 1:1

Extraction of copper from solution after bioleaching of printed circuit boards (PCBs)

The solvent extraction of copper and iron from bioleaching solutions of PCBs with LIX 860N-IC and next stripping test with H2SO4 were investigated. In test the effect of varying sulfuric acid concentration on stripping rate of Cu and Fe and also phase ratio (O : A) were determined. It was found that the stripping rate of copper increases with the sulfuric acid concentration. The optimal concentration of H2SO4 is suggested to be about 150 g/L and phase ratio O:A = 1:1

Infrared astronomy research and high altitude observations

Highlights are presented of studies of the emission mechanisms in the 4 to 8 micron region of the spectrum using a circular variable filter wheel spectrometer with a PbSnTe photovoltaic detector. Investigations covered include the spectroscopy of planets, stellar atmospheres, highly obscured objects in molecular clouds, planetary nebulae, H2 regions, and extragalactic objects

Welcome Night 2010 Flyer

This is the Welcome Night flyer for 2010

What Are Microaggressions? 2011

What Are Microaggressions? 2011; Joseph A Santiago and URI; Microaggressions are the subtle ways in which body and verbal language convey oppressive ideology about power or privilege against marginalized identities. To put it simply, it is the way that people act differently in subtle ways around people that make them feel uncomfortable.; What are some examples of microaggressions and how do I spot one?; When a racist person walks on the other side of the road when someone of a difference race is coming towards them. – When an LGBT organization has a booth at an event and people keep their distance from it.; When someone says to another person: “You\u27re pretty cute for an overweight girl.” There are many different types of microaggressions that are different from these examples as well. Watch a person\u27s facial expressions, body language, and word choice and notice whether or not they are using microaggessions.; What should I do when I encounter someone using microaggressions?; Correct people when they speak in ways that might be subtly offensive. Welcome people with a friendly hello when they seem to be keeping their distance from you.; Be yourself. Let your personality shine through and show others that you are not a stereotype; Most importantly, Don\u27t use microaggressions in response to microaggressions. If you see someone make a rude facial expression or uncomfortable body movement, confront it, don\u27t mirror it. You have to be the change that you want to see in the world.; Justin Willner; URI GLBT Center; URI LGBTQ Cente

Spitzer Mid-Infrared Imaging of Nearby Ultraluminous Infrared Galaxies

We have observed 14 nearby (z<0.16) Ultraluminous Infrared Galaxies (ULIRGs) with Spitzer at 3.6-24 microns. The underlying host galaxies are well-detected, in addition to the luminous nuclear cores. While the spatial resolution of Spitzer is poor, the great sensitivity of the data reveals the underlying galaxy merger remnant, and provides the first look at off-nuclear mid-infrared activity.Comment: To appear in the conference proceedings for Spitzer New Views of the Universe, held Nov. 2004 in Pasadena, C