What is meant by biodegradable pollutant?
Being organic in nature, s ewage is biodegradable pollutant which can be broken down into simple substance in nature in due course of time by the action of certain microorganisms like bacteria. This process is called biodegradation/decomposition.
What is asbestos and why is it dangerous?
Asbestos refers to a group of naturally occurring, fibrous minerals. Asbestos was once widely used in building supplies and other consumer products. Research shows asbestos fibers can cause major breathing problems and cancer. 1 Old and brittle asbestos products can release tiny, even microscopic, fibers.
What are the sources of asbestos?
What are the sources of asbestos? Deteriorating, damaged or disturbed products—such as insulation, fireproofing, acoustical materials and floor tiles—may be sources of airborne asbestos indoors. 1 When asbestos-containing materials are disturbed, tiny fibers break off and are suspended in the air.
What is asbestos and how is it used?
What is asbestos? Asbestos refers to a group of naturally occurring, fibrous minerals. Asbestos was once widely used in building supplies and other consumer products.
Is asbestos non-biodegradable?
Since the asbestos is good water-resistant material, it is non-biodegradable in nature.
Which one is biodegradable pollutant?
Waste water is generally known as sewage and it is a biodegradable pollutant.
Which pollutants is not biodegradable?
DDT, plastics, polythene, bags, insecticides, pesticides, mercury, lead, arsenic, metal articles like aluminum cans, synthetic fibres, glass objects, iron products and silver foils are non-biodegradable pollutants.
What is pollution biodegradable?
biodegradable pollution - pollution that is rendered harmless by natural processes and so causes no permanent harm. pollution - undesirable state of the natural environment being contaminated with harmful substances as a consequence of human activities.
What are biodegradable and non-biodegradable pollutants give example?
Solution : Biodegradable pollutants are those which are decomposed by bacteria e.g., sewage, cow dung, fruit, vegetable etc.
Non-biodegradable pollutes are those which cannot be decomposed by bacteria.
e.g., mercury, aluminium, lead , copper, DDT etc.
What are the examples of biodegradable?
Examples of Biodegradable material are:Human and animal waste. (Such as Fecal matter)Plant products such as wood, paper, food material etc.Remains of dead organisms.Egg shell.
What is non-biodegradable examples?
Examples of non-biodegradable materials include fibres, shoes, metals, hazardous substances, pesticides, consumer items such as plastic bags, shopping bags, plastic containers and plastic water bottles.
Which one the biodegradable following is not?
Answer. Answer: Aluminium is a metal and can't be degrade by bacterias.So, it is non biodegradable.
What are biodegradable pollutants give two example of biodegradable pollutants?
Few examples of biodegradable pollutants are,Wastes produced from humans and animals waste.Plant products, dried leaves, grass, fruits and flowers.Food wastes, wood and other remains from the death of living creatures.
What is non-biodegradable pollutants give example?
Examples:- DDT, plastics, polythene bags, insecticides, pesticides, mercury, lead,arsenic, metal articles like aluminum cans, synthetic fibers, glass objects, iron products and silver foils are non-biodegradable pollutants.
What is biodegradable and nonbiodegradable?
Biodegradable waste is decomposed and degraded by microbes. Non-Biodegradable waste cannot be decomposed by microbes.
What is the difference between biodegradable and non-biodegradable pollutants?
Biodegradable pollution is those which are decomposed by natural biological agents. Non- biodegradable pollutants that do not decompose. They are decomposed and degraded by microbes. They are non - decomposed and non- degraded by microbes.
What are the sources of asbestos?
Deteriorating, damaged or disturbed products—such as insulation, fireproofing, acoustical materials and floor tiles —may be sources of airborne asbestos indoors. 1 When asbestos-containing materials are disturbed, tiny fibers break off and are suspended in the air. These fibers may remain airborne for long periods of time before settling in dust.
What is asbestos fiber?
What is asbestos? Asbestos refers to a group of naturally occurring, fibrous minerals. Asbestos was once widely used in building supplies and other consumer products. Research shows asbestos fibers can cause major breathing problems and cancer. 1 Old and brittle asbestos products can release tiny, even microscopic, fibers.
How does asbestos affect the body?
When you inhale asbestos, the tiny fibers enter your air passages. Your body's natural defenses remove most of these particles. The majority will be carried away or coughed up in a layer of mucus that protects your lungs. However, some fibers may bypass those defenses and lodge deep within your lungs.
Can asbestos fibers be removed?
However, some fibers may bypass those defenses and lodge deep within your lungs. Those fibers can remain in place for a very long time and may never be removed. Most of the harmful impacts of asbestos will not be seen immediately. They often develop years after exposure occurs. 1.
Can asbestos be airborne?
Exposure to asbestos-containing materials is minimal as long as they are in good condition and not disturbed. Fibers are unlikely to become airborne unless materials are cut, ripped or sanded. If you need to remodel, remove or clean up asbestos, be sure to hire trained professionals. 1.
Can asbestos cause cancer?
Asbestos can cause cancer. Inhaling asbestos fibers increases the risk of developing lung cancer and mesothelioma, a deadly cancer of the thin lining surrounding the lungs and other organs. 1, 2 The risk depends on how much you inhale, how long ago you were exposed and whether you smoke. Smoking cigarettes, in addition to inhaling asbestos, ...
What is considered waste?
"Waste" has been defined as a misplaced resource or a resource that has lost its value to its owner. Any type of liquid waste mixed with clean water at any concentration may produce wastewater (sewage mainly refers to domestic wastewater); that is, water that has been adversely affected in quality by anthropogenic influence ( Wikipedia, 2014 ). Liquid waste may be emanating from various sources, for example, domestic residences, commercial and industrial establishments and/or agriculture or aquaculture, highway drainage, and so on, and be carried by groundwater or surface water. It may be composed of various contaminants, for example, organic and inorganic soluble and particulate material (including emulsions and toxins), bacteria, and other microorganisms (including pathogens) ( Metcalf and Eddy, 2003 ).
What is the role of biocatalysts in biofiltration?
The biocatalyst also plays a vital role in the biofiltration processes. The inoculation of a specific biocatalyst may be required for efficient biofilter operation, depending upon the type of packing material (i.e., natural, inert or synthetic) and characteristics of the biodegradable substrate (i.e., easily biodegradable pollutant or recalcitrant pollutant).5,19,20 As shown in Table 1, mixed microbial cultures are frequently used to inoculate the filter bed, and the inoculum source can be different, e.g., activated sludge from a wastewater treatment plant, depending on its availability and types of pollutants. 20,21 Such type of natural inoculum generally contains microbial populations able to metabolize easily biodegradable pollutants, such as hydrogen sulphide. In some biofilters, defined co-cultures of different bacterial species have sometimes also shown to be more efficient than single pure organisms for the biodegradation of recalcitrant compounds because of the synergistic interactions between different pure strains. Besides, the characteristics of the microbial community structure also plays an important role in maintaining the functional stability of the biofilter depending on the pollutant loading characteristics, i.e., steady or transient loading patterns.
