Hongyi Han

Title: Innovations of Hongyi Han in Nanofiltration Membranes

Introduction

Hongyi Han is a prominent inventor based in Shanghai, China. He has made significant contributions to the field of nanofiltration membranes, particularly through his innovative approaches to membrane preparation and regeneration. With a total of two patents to his name, Han's work focuses on enhancing the performance and sustainability of filtration technologies.

Latest Patents

Han's latest patents include a polyamide (PA) nanofiltration (NF) membrane and a preparation method derived from scrapped microfiltration (MF) membranes. This method employs a cleaning-repairing-interfacial polymerization upgrading strategy. It utilizes sodium hypochlorite and oxalic acid for deep cleaning of the scrapped MF membrane. Additionally, PDA is used as a repairing agent to create a reaction platform on the membrane surface. The final reaction system involves piperazine and trimesoyl chloride (TMC) to form a PA NF membrane with an active layer. This innovative approach allows for the construction of a coating with a specific thickness and enhanced hydrophilicity, providing optimal conditions for upgrading and preparing an NF membrane.

Another notable patent by Han is for a high-performance thin-film composite polyamide membrane upcycled from a substrate fouled with a biopolymer. The preparation method involves fouling the substrate with a biopolymer to create a composite. The composite is then immersed in a solution of a polyamine monomer, followed by interfacial polymerization with an acyl chloride monomer to form a rejection layer. After drying and heat treatment, the target polyamide membrane is obtained, showcasing Han's commitment to sustainable practices in membrane technology.

Career Highlights

Throughout his career, Hongyi Han has been associated with esteemed institutions such as Tongji University and Tianjin Polytechnic University. His work at these universities has allowed him to advance research in membrane technology and contribute to the academic community.

Collaborations

Han has collaborated with notable colleagues, including Zhiwei Wang and Ruobin Dai. These partnerships have fostered innovation and have been instrumental in the development of his patented technologies.

Conclusion

Hongyi Han's contributions to the field of nanofiltration membranes reflect his dedication to innovation and sustainability. His patents demonstrate a forward-thinking approach to membrane technology, paving the way for advancements in filtration processes.