Purified Tomato Water
Angelia Chin, Larissa Kwok
Richmond Secondary
Floor Location : M 020 V

Our project is about how differing amounts of tomato peels affect levels of methylene dye in a distilled water solution. We decided to do this project because of the consequences of cationic pollutants on the environment, using the dye as an alternative example. We had the purpose of finding a solution to the extraction of the dye using a cost-efficient method that was convenient and easy to use, as well as being highly accessible. With research, we found that tomato peels were found in large amounts of waste, biodegradable, and had a likely chance of absorbing cationic pollutants such as the methylene dye, due to the amounts of pectin found in its skin. Our hypothesis stated that we believed one gram of tomato skin would absorb 55 percent of a 0.25 ml(dye) to 100 ml (distilled water) solution and that 6 percent of the dye would decrease with every 2 grams of skin added. We tested this hypothesis by adding 0.25 ml to 100 ml of distilled water, putting in teabags of tomato skins that varied by grams of 1, 2, 4, 6, and 8, and measuring the before and after using an app that measured the illuminance of the solution. Our hypothesis was proven wrong by the results, and the unexpected experiment conclusions could be because of the faulty illuminance measuring method, as we found that the flesh of the tomato dispersed into the water, making the final product cloudy, and the measurements incorrect. To the naked human eye, however, the product of the experiment seemed to be successful, with the increasing amounts of tomato skin, the color of the water decreased. To improve on this, we could've used a finer strainer to run through the final product, effectively ridding the tomato residue and making the water clear with only the decreased amounts of dye.