Search results
Results From The WOW.Com Content Network
Air pollution is the introduction of airborne chemicals, particulate matter or biological materials that cause harm or discomfort to organisms. [58] The population growth , industrialization and motorization of human societies have significantly increased the amount of airborne pollutants in the Earth's atmosphere, causing noticeable problems ...
Biomass (in the context of energy generation) is matter from recently living (but now dead) organisms which is used for bioenergy production. There are variations in how such biomass for energy is defined, e.g. only from plants, [8] or from plants and algae, [9] or from plants and animals. [10]
Besides particulate matter such as ions and molecules, the most common types of contamination are: [citation needed] People – Hair, fibre particles from bodies and clothes, also poor hygiene leading to deposition of microorganisms; Environment – Dust particles, contaminated air, work surfaces, gases, movement ceilings, walls and floors
Air pollution can occur naturally or be caused by human activities. [3] Air pollution causes around 7 million deaths each year. [4] [5] It is a significant risk factor for a number of pollution-related diseases, including heart disease, stroke, chronic obstructive pulmonary disease (COPD), asthma and lung cancer.
Debates over local food system efficiency and sustainability have risen as these systems decrease transportation, which is a strategy for combating environmental footprints and climate change. A popular argument is that the less impactful footprint of food products from local markets on communities and environment. [162]
Kronos Advanced Technologies is offering a wide variety of uniquely patented lines of smart air purifiers for indoor use that removes 99.98% of all pollutants, including smoke, bacteria, and viruses, but also do not require any filter replacements, making our air purifiers the lowest cost of ownership in the industry for comparable products.
The air space between HEPA filter fibers is typically much greater than 0.3 μm. HEPA filters in very high level for smallest particulate matter. Unlike sieves or membrane filters, where particles smaller than openings or pores can pass through, HEPA filters are designed to target a range of particle sizes. These particles are trapped (they ...
While it can potentially reduce greenhouse gas emissions compared to fossil fuels, concerns about biodiesel include land use changes, deforestation, and the food vs. fuel debate. The debate centers on the impact of biodiesel production on food prices and availability, as well as its overall carbon footprint.