Samet Vials (IMAGE) Dickinson College Caption Within hours, dried and ground avocado peels help remove methylene blue dye from water through a process called adsorption. Credit Dickinson College Usage Restrictions Credit Dickinson College License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.