They reported in an article that one gram of dry dormant cells from that fermenter would kill up to 12 milligrams of lead in aqueous solutions at initial concentrations of less than one part per million.
They show in the British journal Nature Communications Earth and Environment that the process is very fast and takes less than five minutes to complete.
The method is incredibly effective, the authors said, as they calculated that waste yeast from a single Boston brewery would be enough to treat the entire city’s water supply.
The MIT team added that such a fully sustainable system would not only purify the vital fluid, but would also divert what would otherwise be a waste stream that needs to be suppressed.
We were the first to use a mechanistic perspective to unravel the mechanisms of biosorption, as they point out in the text, noting that this provides fundamentally new insights into the process.
Establishing a workable system for treating water and recovering yeast, which can then be separated from the lead for reuse, is the next stage, and the text advances.
He concluded that the same material could be used to remove other heavy metals, such as cadmium and copper, but that more research would be required to determine the technique’s effectiveness rates.
From large pieces of trash to invisible chemicals, they end up in lakes, rivers, streams, subterranean areas, and finally into the oceans, which is why this pollution is now a growing global crisis.
Experts call for water supplies to be preserved because although nearly 70 percent of the planet is covered, 2.5 of it is fresh and only one percent is easily accessible: most of it is trapped in glaciers and distant ice fields.
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