Water
preservation implies recovering oils and hydrocarbon oils from water, among
other pollutants. When an oil spill occurs on water, it is critical to contain
the spill as quickly as possible in order to minimize danger and potential
damage to persons, property, and natural resources. Containment equipment isused to restrict the spread of oil and to allow for its recovery, removal, ordispersal. The use of floating barriers is the most commonly used technique to
control the spread of oil, whereas sorbents are most often used to remove final
traces of oil, or in areas that cannot be reached by skimmers.A number of
vegetable by-products from sunflower, rice and maize, as well as the wastes
obtained from the processing of grass, leaves, straw and others are utilized as
adsorbents. They are insoluble in water, have a good chemical stability and
high mechanical strength, have a granular structure, making them a good
adsorbent material. Using raw agricultural wastes in such a way is one of the
primary research directions in the field of the environmental protection.
Moreover,
agricultural by-products have provided to be promising raw materials for the
production of carbon content adsorbents. Pyrolysis is a thermo-chemical process
which has been widely applied to processing of biomass, gain due to its energy
content. Thermal treatment removes the moisture and the volatile matter
contents of biomass material. The remarkable differences are mainly in
structure, morphology and chemical activity of the final product. The changes
in the properties usually lead to high reactivity, and hence, a usage of carbon
content material as adsorbent. Read more..........
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