How to remove rust from iron: 5 different ways

Therefore, here are five effective home methods for rust removal:

White vinegar solution

White vinegar can be used for small-sized, easily carried and moved metal pieces. It contains acetic acid, which effectively dissolves rust from metal surfaces.

For this method, fill a plastic container with approximately 3.8 litres of white vinegar and one cup of table salt. Stir the mixture until well combined, then submerge the rusty pieces in the solution. Ensure they are fully covered and let them soak for at least 12 hours but no more than three days. After soaking, gently scrub the pieces using aluminium foil.

Baking soda and potato

Potatoes contain oxalic acid, which effectively removes rust from iron. To use this method, cut a potato into half and sprinkle an appropriate amount of baking soda on it. Then, rub it strongly against the metal piece until the rust disappears. Once done, carefully wash the metal piece with water and dry it with a clean cloth.

Another option is to replace baking soda with dish soap. Rub the rusty piece with the potato and dish soap combination, then leave for a few hours before carefully washing and drying it.

Alternatively, baking soda can be used on its own to remove light rust stains. Mix it with a suitable amount of water until it forms a thick paste. Apply the paste to the rusty spots and let it sit for a few hours or overnight. Then, scrape the metal piece clean of the baking soda with a toothbrush. After that, thoroughly clean the piece with water and dry it.

Lemon and salt

Lemon and salt are common household staples that are very effective in removing rust from metals, particularly iron. In a container, mix a small amount of salt with an appropriate amount of lemon juice. Pour the mixture over the rusty iron pieces and let it sit for some time. After a while, scrub the pieces lightly with aluminium foil until the rust is completely removed.

An alternative approach involves sprinkling salt directly onto the rust, pouring lemon juice over it, and letting it sit for two to three hours. Once the rust dissolves, the piece is wiped clean with a cloth.

Black honey

Black honey, also known as sugar molasses, contains various acids and compounds that help remove rust from metal pieces. To use this method, add a small amount of black honey to a container filled with water and stir until well mixed. Next, soak the rusty metal pieces in the solution for several hours until the rust spots dissolve. After soaking, wash the pieces with water and dry them using a clean cloth.

Note: this process can be repeated until the metal pieces are entirely free of rust, or they can be left to soak in the black honey and water mixture for a longer period.

Carbonated drinks

Carbonated drinks contain citric acids and are highly effective in removing light rust stains, especially in their early stages. 

To use the carbonated drinks method, place the rusty pieces in a large container and pour the carbonated drink over them. After that, intensively scrub the rust spots with aluminium foil. If the spots are difficult to remove, pouring more of the drink and intensifying the scrubbing may be helpful. Lastly, dry the metal pieces thoroughly with a clean cloth.

References 

[1]  diyremedies.org,Best Home Remedies to Remove Rust Naturally
[2] hunker.com,How to Remove Rust Using Vinegar
[3] thespruce.com,How to Remove Rust
[4] howstuffworks.com,How To Remove Rust From Metal
[5] metalswarehouse.co.uk,5 WAYS TO REMOVE RUST FROM METAL