IO – The November Tenth Institute of Technology (Institut Teknologi Sepuluh Nopember – “ITS”) Surabaya’s Platinum Team – Mohamad Ikbal “Ikbal” Pangestu, Miftah Eka Andrayani Wangsa, Eka Wahyu Muliana, and Kamila Zahranisa – brought honor to Indonesia by defeating 100 teams from 12 countries in the 2021 Taiwan Innotech Expo, Friday (29/10/2021). In this competition, held by the Taiwanese government, the Team wowed everyone with their innovative use of mango skin extract as an organic inhibitor of corrosion in ASTM A36 low-carbon steel.
Ikbal, the Team’s Head, declared that leaving organic waste alone will damage the environment, because of the excessive volume rotting away, unused. Therefore, his Team takes the common waste mango skin and turns its extract into an organic inhibitor to prevent corrosion in the carbon steel used in the petroleum and shipbuilding industries. “This innovation can resolve a major problem when using steel, i.e. corrosion, because of the chemical action of sea water (NaCl),” he explained in a press release received by the Independent Observer on Sunday (31/10/2021).
The Team, comprised of ITS Class of 2018 Department of Chemistry students, choose to use mango skin because it contains many organic favonoid compounds, which are known to have antioxidant characteristics.
These compounds added hydrogen by contributing a reduced group out of
the hydroxyls, which will stick to the aromatic rings and delocalize radical compounds. Furthermore, it is readily available in large quantities due to the large scale of Indonesia’s mango production, and very cheap.
The processing commences with the washing of the mango skin that’s already separated from the fesh, in running water. It is then dried out and the essence extracted by maceration. The resultant mango skin extract is then mixed with an acrylic resin, and the final mix is coated on low-carbon steel ASTM A36. “We tested corrosion rates using the PGSTAT302N Autolab instrument. Our tests show that using mango skin extract reduces corrosions rate by 1.12 x 10-7 millimeters a year with an effciency rate of 99.999%,” Ikbal said.
Even though the competition was a virtual one, the Platinum Team still enjoyed the excitement of witnessing innovations from across the globe, by
checking the virtual booths shown on the Taiwan Innotech Expo website.
Ikbal and his team hopes that their research can be of use to the petroleum and ship-building industries, a pride to their country… “…and an anniversary gift for ITS from its Platinum Team. Here is our gift to the alma mater,” he said. (est)