Bag filters can be used for collection of particles if the gas temperature is lower than 200 C.
Sometimes bag filters are more economical than the ESP.
Venturi scrubbers are used for particulate removal as well as the gas cleanup. If gases
contain some acidic gases like HCl or HF or even SO2, these can be removed by the basic liquid or water used in the scrubber together with the Particulates.
Monday, October 07, 2013
ELECTROSTATIC PRECIPITATOR
• ESP is used for collecting particles < 5 micron in diameter
• Electrostatic force is used to collect the particles instead of the gravitational force
• The basic idea is to give the particles a (-) charge around the CORONA and collect them on (+) ly charged plates.
• Electrostatic force is used to collect the particles instead of the gravitational force
• The basic idea is to give the particles a (-) charge around the CORONA and collect them on (+) ly charged plates.
Air Pollution During Pregnancy
Air pollution is a well-known problem that give harm to humankind. Columbia University's Mailman School of Public Health conducted a survey on causes of air pollution during pregrnancy.
Maternal psychological distress combined with exposure to air pollution during pregnancy have an adverse impact on the child's behavioral development, according to researchers at the Columbia Center for Children's Environmental Health at the Mailman School of Public Health.
The study, which appears in the journal Pediatrics, reports that maternal demoralization, a measure of psychological distress capable of affecting a mother's ability to cope with stressful situations, was linked with a number of behavioral problems, including anxiety, depression, attention problems, rule-breaking, externalizing problems, and aggressive behavior. The effects of demoralization were greatest among children with higher levels of prenatal exposure to polycyclic aromatic hydrocarbons (PAH) in air pollution.
Click for complete text http://www.eurekalert.org/pub_releases/2013-10/cums-apa100413.php
Maternal psychological distress combined with exposure to air pollution during pregnancy have an adverse impact on the child's behavioral development, according to researchers at the Columbia Center for Children's Environmental Health at the Mailman School of Public Health.
The study, which appears in the journal Pediatrics, reports that maternal demoralization, a measure of psychological distress capable of affecting a mother's ability to cope with stressful situations, was linked with a number of behavioral problems, including anxiety, depression, attention problems, rule-breaking, externalizing problems, and aggressive behavior. The effects of demoralization were greatest among children with higher levels of prenatal exposure to polycyclic aromatic hydrocarbons (PAH) in air pollution.
Click for complete text http://www.eurekalert.org/pub_releases/2013-10/cums-apa100413.php
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