Ecological fertilizer from wastewater nutrients

Wastewaters contain large amounts of phosphorus and nitrogen, which are valuable nutrients. Aalto University's NPHarvest process enables recovery of these nutrients as clean ammonium sulfate and sludge containing phosphorus ...

Bacterial mechanism converts nitrogen to greenhouse gas

Cornell researchers have discovered a biological mechanism that helps convert nitrogen-based fertilizer into nitrous oxide, an ozone-depleting greenhouse gas. The paper was published online Nov. 17 in the Proceedings of the ...

Microbiologists discover enigmatic comammox microbes

Nitrification plays a key role in Earth's natural nitrogen cycle and in agriculture. Now an international team of scientists led by Holger Daims and Michael Wagner, microbiologists at the University of Vienna, has discovered ...

Algae from wastewater solves two problems

In one of the first studies to examine the potential for using municipal wastewater as a feedstock for algae-based biofuels, Rice University scientists found they could easily grow high-value strains of oil-rich algae while ...

Minnesota sets goals for fixing Gulf of Mexico dead zone

Minnesota's top pollution officials are setting ambitious goals - primarily for farmers - to cut back on the millions of tons of pollution that each year flow out of the state and down the Mississippi River to the Gulf of ...

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