Introduction
The environmental pollution of water by oil has been a specific
and serious problem [1,2]. An oil spill in the environment causes
adverse effects on wildlife and loss of oil, therefore, it is important
to establish and develop techniques of oil removal from the water
environment in order to apply the appropriate procedure to the
cleanup of the oil pollution. The use of an oil sorbent is the commonly
used technique to remove oil from the environment [3–8].
Recently, the application of natural fibers, such as cotton [9], cotton
grass fiber [10], milkweed, kenaf [11], vegetable fibers [12] and
wool [13,14], as the material for the removal of oil has been studied,
and some of them showed higher oil-sorption capacities for oil than
the typical synthetic oil sorbent made of polypropylene. Natural oil
sorbent fibers are environmentally friendly materials, because of
their biodegradability and reusability. This feature makes natural
fibers very attractive as oil sorbents compared to synthetic fibers.
In this study,we investigated the utilization of silkworm cocoon
waste as a low cost sorbent for the removal of oil from water. In
general, the silkworm cocoon is expensive. However, most of the
pierced cocoons or very dirty cocoons of the silkwormare discarded
as industrial wastes, and can be obtained as a low cost material.
The silkworm cocoon has the properties of a slow biodegradability
[15], and the shell of the silkworm cocoon contains wax and shows
IntroductionThe environmental pollution of water by oil has been a specificand serious problem [1,2]. An oil spill in the environment causesadverse effects on wildlife and loss of oil, therefore, it is importantto establish and develop techniques of oil removal from the waterenvironment in order to apply the appropriate procedure to thecleanup of the oil pollution. The use of an oil sorbent is the commonlyused technique to remove oil from the environment [3–8].Recently, the application of natural fibers, such as cotton [9], cottongrass fiber [10], milkweed, kenaf [11], vegetable fibers [12] andwool [13,14], as the material for the removal of oil has been studied,and some of them showed higher oil-sorption capacities for oil thanthe typical synthetic oil sorbent made of polypropylene. Natural oilsorbent fibers are environmentally friendly materials, because oftheir biodegradability and reusability. This feature makes naturalfibers very attractive as oil sorbents compared to synthetic fibers.In this study,we investigated the utilization of silkworm cocoonwaste as a low cost sorbent for the removal of oil from water. Ingeneral, the silkworm cocoon is expensive. However, most of thepierced cocoons or very dirty cocoons of the silkwormare discardedas industrial wastes, and can be obtained as a low cost material.The silkworm cocoon has the properties of a slow biodegradability[15], and the shell of the silkworm cocoon contains wax and shows
การแปล กรุณารอสักครู่..
