My concept proposes the use of wood dust/wood chips for adsorbing oil from oil spills which is a big environmental problem these days.
There are two ways to use wood dust/ wood chips for this process
1. Using Oil spill bags
Here in this method wood dust is filled in oil permeable sacks and dropped in ocean where oil is spilled. The wood dust will float along with the bag and will adsorb oil selectively, after adsorbing the oil the bags can easily be removed and after drying the bags it can be burnt as fuel. In this process oil is removed from oceans. Here we can utilize tons of wood dust.
2.Nanofibrillated cellulose sponges
Scientists have already found out that it possible to make nanofibrillated cellulose sponges using wood dust/wood chips that can soak upto 50 times their own weight in water. The sponge selectively adsorbs oil and repels water which makes it ideal for this use.
Regular NFC (nanofibrillated cellulose) is made by adding water to cellulose-containing materials (such as wood waste, discarded paper or agricultural by-products), extruding the resulting pulp at high pressure to create a gel, then freeze-drying the gel to remove the water. This results in a sponge made up of “long and interconnected cellulose nanofibres,” that soaks up both oil and water.