![]() Scrubber is an instrument that remove gases like sulphur dioxide present in the exhaust.Īccording to Central Pollution Control Board (CPCB), particulate size 2.5 micrometers or less in diameter (PM 2.5) are adversely affect the lungs followed by breathing and respiratory symptoms, irritation, inflammations and results premature death.Īutomobiles are the largest source of air pollution in big cities. Then reducing the velocity of air between the plates which help the dust to fall. These charged dust particles are attracted by collecting plates. ![]() These are separated using electrostatic precipitator which can remove over 99 per cent particulate matter present in the exhaust from a thermal power plant.Īt high voltage the electrons produced in an instrument are attached to dust particles giving them a net negative charge. Smoke stacks of thermal power plants, smelters and other industries release particulate and gaseous air pollutants together with harmless gases, such as nitrogen, oxygen, etc. In animals they affect the respiratory system and causes diseases. Pollutants are harmful substances that affect growth and yield of crops and cause premature death of plants. Kerala Plus Two Botany Notes Chapter 8 Environmental Issues ![]() Students can Download Chapter 8 Environmental Issues Notes, Plus Two Botany Notes helps you to revise the complete Kerala State Syllabus and score more marks in your examinations.
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