Abstract
Rice husks, an agricultural waste, were thermally treated and evaluated as an adsorbent for oil with the goal of being used as a remediation strategy for oil spills of oil based products. The oil sorption capacity was examined of thermally-treated, carbonized rice husks which are mainly composed of silicates. Results showed that the oil sorption capacities of the carbonized rice husks prepared at 700°C is 16 g/g for heavy crude oil. The microstructure and morphology of the carbonized rice husks were investigated by FTIR spectrometry and Scanning Election Microscope (SEM).
Highlights
Water preservation implies recovering oils and hydrocarbon oils from water, among other pollutants
The sorption capacity of the heattreated rice husks was evaluated in the case of typical oil with different density: gasoline Ai-80 (ρ=0.734 g/cm3); heavy crude oil (ρ=0.937 g/ cm3) and light crude oil (ρ=0.792 g/cm3)
The effect of contact time on the sorption capacity of TRH700 and TAS600 were studied
Summary
Water preservation implies recovering oils and hydrocarbon oils from water, among other pollutants. 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 [1]. A number of vegetable by-products from sunf lower, 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. The changes in the properties usually lead to high reactivity, and a usage of carbon content material as adsorbent [2,3,4,5,6,7]
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