Copper Adsorption on carbon surfaces

Removing heavy metals from waste water has always been a challenge. The different techniques that are offered today are limited to using other solvents that can potentially release secondary toxic materials and affect the environment and human health. Promising research using activated carbons as wastewater treatment have shown that it is an ecological alternative to the current methods. The exact mechanisms of heavy metal adsorption remains unknown. This project will devise different mechanism theories that could explain certain behaviors and characteristics of chars

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2050: The settlement on Mars has been cut off from Earth for nearly 5 years. In spite of their efforts to conserve what little food and water and oxygen they still have, they are running out of time... The Desperates back on Earth have mastered Darwinian survival, while the STEM-Heads have pursued a more discreet evasion of Death since the Collapse of 2045. Yet all of them dream of escaping from their overheated, overpopulated Hell called Home. As the mission to clean-up after First Mars leads a small STEM-Head band towards Kennedy Space Center, rumors of a distant paradise reach Desperate leaders, and, all of sudden, all eyes are back on Mars..

COOL-LAMPS. Discovery of COOL J0335−1927, a Gravitationally Lensed Quasar at z = 3.27 with an Image Separation of 23.″3

We report the discovery of COOL J0335−1927, a quasar at z = 3.27 lensed into three images with a maximum separation of 23.″3 by a galaxy cluster at z = 0.4178. To date, this is the highest redshift wide-separation lensed quasar known. In addition, COOL J0335−1927 shows several strong intervening absorbers visible in the spectra of all three quasar images with varying equivalent widths. The quasar also shows mini-broad line absorption. We construct a parametric strong gravitational lens model using ground-based imaging, constrained by the redshift and positions of the quasar images as well as the positions of three other multiply imaged background galaxies. Using our best-fit lens model, we calculate the predicted time delays between the three quasar images to be Δ t _AB = ${499}_{-146}^{+141}$ (stat) and Δ t _AC = $-{127}_{-17}^{+83}$ (stat) days. Folding in systematic uncertainties, the model-predicted time delays are within the ranges 240 < Δ t _AB < 700 and −300 < Δ t _AC < −30. We also present g -band photometry from archival Dark Energy Camera Legacy Survey and Pan-STARRS imaging, and new multi-epoch observations obtained between 2022 September 18 UT and 2023 February 22 UT, which demonstrate significant variability in the quasar and will eventually enable the measurement of the time delay between the three quasar images. The currently available light curves are consistent with the model-predicted time delays. This is the fifth paper from the COOL-LAMPS collaboration