• 专利标题:   Preparing copper alginate hydrogel filter membrane useful in sewage treatment, comprises dissolving reinforcing agent and sodium alginate in filtered waste copper ammonia solution, defoaming, forming copper alginate hydrogel film, ionizing and rinsing with deionized water to remove excess ions.
  • 专利号:   CN114130209-A
  • 发明人:   YI X, WANG X, SUN X, TANG X, YU J, ZHANG S, ZHANG W, XU L, ZHAO K
  • 专利权人:   UNIV TIANJIN POLYTECHNIC
  • 国际专利分类:   B01D067/00, B01D069/02
  • 专利详细信息:   CN114130209-A 04 Mar 2022 B01D-067/00 202238 Chinese
  • 申请详细信息:   CN114130209-A CN11398822 24 Nov 2021
  • 优先权号:   CN11398822

▎ 摘  要

NOVELTY - Preparing copper alginate hydrogel filter membrane comprises (i) filtering the waste copper ammonia solution, removing insoluble substance, adding a reinforcing agent and sodium alginate into the filtered waste copper ammonia solution respectively, mixing, dissolving and dispersing uniformly to obtain mixture aqueous solution with 0.1-10% sodium alginate and 0.01-10% an enhancer and defoaming; (ii) preparing acid solution as coagulation bath; and (iii) pouring the mixture aqueous solution on a clean glass plate, scraping it with a glass rod with a copper wire with a diameter of 10-1000 mum wound at both ends, and soaking the glass plate and the scraped film immediately into the coagulation bath thus the copper ammonia solution encounters the acid in the coagulation bath to release copper ions, and crosslinking the copper ions immediately with sodium alginate to form a copper alginate hydrogel film. USE - The method is useful for preparing copper alginate hydrogel filter membrane is useful in sewage treatment, dye desalination, dye interception and antibiotic removal (all claimed). ADVANTAGE - The method: is simple; turns waste into treasure; and prepares copper alginate hydrogel filtration membrane with good antibacterial property.