Aiswarya Paramadathil from AdiShankara Institute of Engineering and Technology, Kerala developed a Low-cost sanitary napkin disposal machine.
The issue of sanitary waste is a major problem. So, a technology is developed for the disposal of sanitary napkins using lowcost chemicals. The napkin-dissolving solution collects in a septic tank and thereby does not pave way for any kind of pollution. The device works under the principle that cotton gets dissolved in a chemical named Cuprammonium Hydroxide [Cu(NH3)4(OH)2] and its non-woven part can be recycled and used for making bags and covers. The cottondissolving chemical solution is passed to the septic tank while the undissolved nonwoven cotton is collected in a waste tray. The used napkin is put through the inlet of the machine, where it is shred to pieces by the AC single-phase induction motor. The shred napkin pieces go to the reaction chamber, where the reaction between the napkin and Cu(NH3)4(OH)2 takes place. The required amount of both chemicals needed for destroying one napkin is delivered into the reaction chamber through a tube, controlled by a solenoid valve. The approximate amount of the final chemical required to destroy one napkin is about 150 ml. 150 ml of dissolving solution contains 87 ml NH4OH and 8 gm of Cu(OH)2. Thus, the sanitary napkins are completely destroyed. The innovator has filed a patent for his work on internet for low-cost sanitary napkin disposal machine.
For this innovation a low-cost sanitary napkin disposal machine she received appreciation award in Gandhian Young Technology Innovation Award 2016 organized by SRISTI at Rashtrapati Bhawan, New Delhi