KMUTT donated more than 3,000 pieces of disused aluminum waste to the Pollution Control Department (PCD), Ministry of Natural Resources and Environment on 7 April 2021 to be recycled as prosthetic legs for those who need in the royal project. This activity supports the ideas and conducts of environment conservation with efficient and sustainable use of limited resource. The Green Heart students were the core in promotion and operation of the activity. The materials were donated by various organizations, faculties, departments, staffs, and students within the university.