As the pH increased, the ligands such as carbonate groups in eggshells would be exposed, increasing the negative charge density on the sorbent
surface, increasing the attraction of metallic ions with positive charge and allowing the sorption onto the cell surface.
The capability of the produced sorbent
to remove Cr(VI) from aqueous solution in terms of kinetics and equilibrium was investigated and reduction sorption processes are discussed.
Commercial deployments and 50 DOE and industry tests of sorbent
injection systems have achieved, on average, 90 percent reductions in mercury emissions.
We wanted to create a sorbent
that not only performed better but was better for the environment in production as well as purpose," said John Sellars, executive vice president of marketing.
Performance of a fixed sorbent
bed can be described using the following mass balance equation with the assumption that the axial dispersion is negligible compared with the convection term (Figure 1):
began selling its novel brominated carbons for mercury capture and systems for injecting them into the flue gases of coal-fired power plants this year.
When you go to the site, first click on decontamination, then Sorbent
Decontamination System M100.
Waters' Oasis Sorbent
Selection Toolkits and Oasis 2x4 Method Strategy seeks to make selection of SPE tools and method development easier and faster.
beta]-Cyclodextrin was immobilized to the activated sorbent
in alkaline media according to schemes 3 and 4.
Turchi says users will eventually be able to choose from either a solubilized form of the sorbent
that can be sprinkled into contaminated water, circulated, and then filtered off or allowed to settle out, or a pelletized form for use in a packed-bed approach.
-- with the mercury tightly bound to it -- will then be collected in the plant's existing electrostatic precipitators.
Products Company (SPC), a worldwide leader in sorbent
manufacturing, has announced the availability of its 2002 Product Catalog.