The followings are existing studies that are related to our experimental study. Liquid eraser out of chalk dust and banana sap.
CHALK DUST
According to Mrs. FIXIT (2007)
Lifts Stains Grease stains and ring around the collar can benefit from some chalk treatment! Rub a piece of white chalk into the stain and let it soak up the grease for a few minutes. Then, dust off any excess chalk and launder as usual. The chalk dust will get into the fibers and absorb the oils, making the stain easier to wash out.
Absorbs Moisture Moisture and humidity can cause silver to tarnish. To slow the process, wrap a small bundle of chalk in cheesecloth, tie it off and store it with your silver absorb excess moisture and keep silver from tarnishing. This same method will work in your toolbox to keep your tools from rusting. (See also: How to Clean Silver)
Stabilizes Screwdrivers Rub some chalk on the business end of a screwdriver, and it's less likely to slip as you turn the screw.
Combats Mustiness Hang a bundle of chalk in your closets and cabinets to keep them from getting damp and musty. The chalk will absorb excess moisture from the air -- humidity that otherwise leads to mustiness
Perfects Patterns The next time you need to trace a pattern for a craft project, use the item tailors have used for ages: chalk. The markings will be clear and easy to see, and when you want to erase them, simply dust away the lines.
Repels Ants To keep ants out of your house, draw chalk lines around your doorways and windowsills. Ants won't cross a chalk line. Why? It's not entirely clear, but some say the ants don't like the particles sticking to their feet, while others say they're averse to the calcium carbonate in the chalk. Whatever the reason, this nontoxic solution will keep ants outside where they belong.
According to Leven Flickety(2006) There are two types of chalk paint: the first is paint made out of pieces of chalk, and the second is a type of paint