SAIKIA , N and SINGHA, R R
(2007)
Effect of bioformulation in reclamation of crude oil contaminated soil and determination of metal contents in plants grown after reclamation.
Indian J Environmental Protection, 27 (10).
pp. 870-875.
Abstract
Crude oil is of organic origin and is an extremely complex
structure of hydrocarbons. Besides carbon, hydrogen,
nitrogen and sulphur many other elements are present in
crude oil. In oil fields, during drilling, gathering,
transporting or in some other operations, some quantity
of the crude oil gets spilled over the neighboring areas.
The spilled crude oil affects the bio-chemical nature of
the soil. As a result no vegetation occurs in those areas.
Therefore, a study was made with an objective to revive
the soil condition for vegetation development.
Biochemical nature of soil showed that soil is highly
alkaline which is not suitable for seed germination, root
and shoot development. Essential elements including
heavy metals are detected in the contaminated soil
samples. Further, beneficial microbes like nitrogen fixers,
phosphate solubilizers, sulphur oxidizers and cellulose
degraders and their activities which play a major role for
plant growth and soil fertility are recorded less in such
contaminated soils. As per the nature of soil sample a
bioformulation was developed for reclamation of soil for
seed germination and plant growth. Elements recorded in
the soil were detected in various parts of the plants
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