Used automobile antifreeze (Ethylene glycol) is considered a hazardous waste. High waste disposal costs make it economical to reclaim the contaminated antifreeze for reuse. Ethylene glycol reclamation can be achieved with the installation of nanofiltration membrane system. Ethylene glycol passes through the membrane while multivalent salts and colour is removed.

Nanofiltration membranes can clean ethylene glycol solutions either for direct reuse or for downstream concentration by evaporator. As pretreatment to evaporators, nanofiltration membranes provide an excellent quality feed which results in more efficient evaporator performance and less frequent cleaning.

Published on: 24 Sept. 2019 Uploaded on: 10 July 2020
Revision: 0