Most commercially available nitric acid has a concentration of 68% in water. When the solution contains more than 86% HNO3, it is referred to as fuming nitric acid. Depending on the amount of nitrogen dioxide present, fuming nitric acid is further characterized as white fuming nitric acid or red fuming nitric acid, at concentrations above 95%. sulfuric acid (H 2 SO 4). Veolia also produces sulfuric acid using the Spent Acid Regeneration process, as shown in Figure 2. In this process, spent sulfuric acid is combusted in air to produce sulfur dioxide (SO 2). The SO 2 is cooled and cleaned through a series of scrubbers, reheated, and sent to a catalytic converter
Fig. 5: Sequence of hydrochloric acid, blank (pure water) and Standards (10 mg/l) Recommended analyzer / configuration TOC-L. CPH. with a normal sensitive catalyst (without glass wool at the bottom of the catalyst tube) B-Type scrubber with SnCl. 2. solution Copper bead scrubber with pH paper Bypassing the blank check vessel Nitric Acid Fume Scrubber systems are a diverse group of air pollution control devices that can be used to remove some particulates or gases from industrial exhaust streams. Traditionally, the term scrubber refers to pollution control devices that use liquid to wash unwanted pollutants from a gas stream.
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