Category: Articles

Power plants burn coal, creating smoke and fumes that pose a significant risk to the health of residents living downwind. The federal government is now trying to solve this problem. It seems that the simplest solution is the adoption of a tighter emission standard. However, the smokestack may turn out to be one place where...

Wet air scrubbers are devices used in underground coal mines for the exhaust air treatment system of various internal combustion engines, primarily as spark arrestors. Their secondary function is to remove pollutants from the exhaust gas. Wet scrubbers are widely used in underground applications of diesel particulat. They are relatively small, making it easier to...

Wet air scrubbers use seawater or freshwater as cleaning media for sulfur dioxide. They are utilized by shipping companies to comply with emissions regulations. Shipping emissions are expected to rise considerably, in parallel with a growing focus on the sustainability and ecological effects of the maritime transport industry. Gas and particulate emissions into the atmosphere affect...

Over the past decade, process chemistry has advanced significantly, with improvements in material science, streamlined designs, and notable technological innovations. Significantly greater scrubber reliability has been achieved by streamlining process configurations, selecting better materials, using redundant equipment in critical areas, and applying practical utility construction experience in power plant operation. The flue gas desulfurization systems,...

The existing technology for chemical and biological air scrubbing in animal barns can be optimized by careful maintenance and recalibration. European and regional air quality policies in the last decades have increased pressure on pig and poultry farmers to limit their farms emissions. Every air-scrubbing pressure livestock facility needs to reach an ammonia level of 70%....

The global scrubber system market is estimated at USD 1,2 billion in 2018 and is projected to grow at a CAGR of 12,8% to reach USD 1,86 billion by 2023. Today the maritime industry is beginning to shift its focus on ways to regulate harmful emissions that are released into the air or sea. In...

One of the biggest challenges for environmental engineers is developing new methods to stop further air pollution. The industry is a large contributor to air pollution. Scrubbers are used at coal-burning power plants, asphalt/concrete plants, and a variety of other facilities that emit sulfur dioxides, hydrogen sulfide, and gases with high water solubility. The function...

The initial considerations for designing wet air scrubbers were minimal operational expenses and energy efficiency. This type of wet air scrubber requires minimal water and energy, since the volume of recirculated washing water is quite low. The system is defined by smart simplicity. Thus the biological wet air scrubber reduces ammonia emissions by 70%, odor...

Air emissions from livestock housing systems are under increased scrutiny for strategies to reduce potentially harmful gases. Wet air scrubbers are one of the ways to remove pollutants from air being exhausted from mechanically ventilated buildings. Wet scrubbers use liquid to collect dust or particulate matter (PM) and absorb gases from the air by using...

A packed bed is a hollow tube, pipe, or another vessel that is filled with a packing material. It can be designed with structured packing or this packing can be filled with a small object such as Raschig rings. The packed bed may contain catalyst particles or adsorbents such as zeolite pellets, granular activated carbon,...