Membrane rejection of nitrogen compounds
Article Abstract:
Nitrogen, which can exist in many chemical forms such as nitrate, nitrite and ammonia as well as organic nitrogen compounds, is a major pollutant that poses a threat to human health when found in water and wastewater. The following study looks at rejection characteristics of nitrogen compounds for nanofiltration, reverse osmosis and low pressure reverse osmosis membranes.
Publication Name: Environmental Science & Technology
Subject: Science and technology
ISSN: 0013-936X
Year: 2001
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Temporal trends, temperature dependence, and relative reactivity of atmospheric polycyclic aromatic hydrocarbons
Article Abstract:
While concentrations of atmospheric polycylic aromatic hydrocarbons (PAHs) at an urban site in Birmingham, U.K. declined between 1992 and 1997, there was no evident decline between 1994 and 1997 in the city center. Relative reactivity, temporal trends and temperature dependence of PAHs were examined.
Publication Name: Environmental Science & Technology
Subject: Science and technology
ISSN: 0013-936X
Year: 2001
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Excess nitrogen may not solve CO2 sink mystery
Article Abstract:
Research done by the Woods Hole Marine Biological Laboratory shows that nitrogen pollution has little effect on forest growth. This finding is contrary to one of he leading explanation for the "disappearance" of 1.8 tons of carbon. That theory stated that excess nitrogen causes the forest in North America to grow faster, thus enabling them to incorporate the CO2 that disappears over North America. According to the research most nitrogen produced by human activity goes into the soil. Thus the mystery of the missing CO2 remains.
Publication Name: Environmental Science & Technology
Subject: Science and technology
ISSN: 0013-936X
Year: 1999
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