2025年3月4日 · Acid rain results when sulfur dioxide (SO 2) and nitrogen oxides (NO X) are emitted into the atmosphere and transported by wind and air currents. The SO 2 and NO X react with water, oxygen and other chemicals to form sulfuric and nitric acids. These then mix with water and other materials before falling to the ground.

The optimum pH of that scrubbing solution is about 9, where the oxidizing properties of NaOCl are the best. This pH value is where reaction NaOCl NaClO is close to equilibrium and the concentration of NaClO (sodium isohypochlorite) which has the tendency to release the active oxygen is maximum.

This bulletin explains why NOx are important air pollutants and how NOx are formed and react in the atmosphere. This bulletin also discusses the principles on which all NOx

2020年10月1日 · The goal of this review is to outline the fundamental solution phase chemistry of NO and related nitrogen oxides (NO x) relevant to biological conditions. While NO and related NO x species are simple molecules and ions, their chemistry is extensive and often complex.

Kinetic Study on Absorption of SO2 and NOX with Acidic NaClO2 Solutions Using the Spraying Column. Journal of Environmental Engineering 2003, 129 (11) , 967-974.

We revealed the formation mechanism of urea nitrate and clarified the main and side reaction paths and key intermediates of denitrification. Urea nitrate would be separated from urea absorption solution only when the concentration product of [urea], [H +] and [NO 3−] was greater than 0.87~1.22 mol 3 /L 3.

2024年3月12日 · Acid rain, also known as acid deposition, is caused by emissions of sulfur dioxide (SO2) and nitrogen oxides (NOx) from power plants, cars and factories. Natural sources like volcanoes, forest fires and lightning strikes also add to the man-made pollution. SO2 and NOx become acids when they enter the atmosphere and react with water vapor.

2024年4月25日 · Systematic heat maps for selectivity between single-N and N–N-coupled products in a wide pH-potential space are further developed, which have reproduced the experimental observations of NO x RR. The approach presented in this study allows for a realistic simulation of the electrocatalytic interfaces and a quantitative evaluation of ...

Sulfate and ammonium experienced similar and significant decreases with little change in pH, neutralization ratio (f = [NH 4+]/ (2 [SO 42–] + [NO 3–])), or nitrate. Oak Grove, MS was the only SEARCH site showing statistically significant pH changes in the Southeast region where small increases in pH (0.003–0.09 pH units/year) were observed.

2023年4月11日 · Atmospheric nitrous acid (HONO) can be quickly photolyzed to produce hydroxyl (OH) radicals under weak sunlight irradiation in the early morning, and thus it has long been...