1. Engineered Stem Cells Seek out and Kill HIV in Living Mice
2. Power without the Cord for Small Devices
Quote of the week
“Measure what is
measurable, and make measurable what is not so” – Galileo Galilei
3. Researchers develop
pulse biometrics
4. Fibers that can
hear and sing
Recovery of Pure
ZnO Nanoparticles from Spent Alkaline Batteries
“Generally used alkaline
batteries contain heavy metals such as zinc, manganese, mercury, lead, cadmium,
and nickel, which can contaminate the environment and pose a potential threat
to human health when batteries are improperly disposed of.
Unplanned disposal of spent
batteries not only pose an environmental problem, it is a complete waste of a
potential and cheap raw material.
Dr Akash Deep, a scientist in
CSIR-CSIO Chandigarh, and his team carried out research to address the
recycling of consumer-type batteries. The
findings are reported in a recent issue of Environmental Science &
Technology ("Recovery of Pure ZnO Nanoparticles from Spent Zn-MnO2
Alkaline Batteries").
The recovery of pure zinc oxide
nanoparticles from the spent Zn-Mn dry alkaline batteries is achieved through
systematic processing involving leaching, solvent extraction and thermal
combustion. The practical significance of the work has been globally recognized
and several online nanotechnology portals have covered the research news for
better knowledge dissemination.”…PubMed.gov
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