Category: Articles

Power plants burn coal, so the smoke and fumes constitute a serious threat to the health of the people who live downwind. The federal government is now trying to decide this problem. It seems that the simplest solution is an adoption of a tighter emission standard. But in fact, it should be noted, the smokestack...

Wet air scrubbers are devices used in underground coal mines for the exhaust air treatment system of various internal combustion engines, primarily as a spark arrestor. A secondary function is to remove pollutants from the exhaust gas. Wet scrubbers are widely used in underground applications of diesel particulate matter (DPM) and other pollutant gases. Wet...

Wet air scrubbers, which use seawater or fresh water as cleaning media for sulfur dioxide, are progressively used by shipping companies to comply with emissions regulations. Nowadays shipping emissions are likely to increase significantly, alongside increasing emphasis on the sustainability and environmental impacts of the maritime transport sector. Emissions of gases and particulates to the...

The last decade has brought tremendous improvement in process chemistry, a better understanding of materials, simplified designs, and other technological enhancements. The much higher scrubber reliability has been attained by simplifying process configurations, understanding process chemistry better, selecting better materials, using redundant equipment in critical areas, applying practical utility construction experience in power plant operation....

The current technology behind chemical and biological air scrubbing in animal barns can be optimized by careful maintenance and recalibration. European and regional air quality policy in the last decades has increased pressure on pig and poultry farmers to limit their farms’ emissions. Each air scrubbing pressure animal barn must achieve an ammonia 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. Nowadays the maritime industry is beginning to shift their focus on ways to regulate harmful emissions that are released into the air or sea. In...

One of the biggest challenges environmental engineers face is devising new techniques to prevent additional 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 work...

The starting points for the design of the biological wet air scrubber were low operating costs and energy savings. Such wet air scrubber has low water and energy consumption, as the amount of washing water that is circulated is very low. The system is characterized by clever simplicity. Thus the biological wet air scrubber reduces...

Nowadays air emissions from animal housing systems are being examined more closely for ways to mitigate potentially harmful gases. Wet air scrubbers are one way 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. Packed bed may contain catalyst particles or adsorbents such as zeolite pellets, granular activated carbon, and...