国家/地区 中国（2）
IPC部 B（2）
IPC大类 B01（2）
IPC小类 B01D（2）
IPC
发明人 ZHANG C（2）
公开年 2021（2）
申请年
专利权人

Composite ultrafiltration membrane useful for treating wastewater, is prepared by preparing composite quantum dot suspension by adding graphene quantum dot/N,N-dimethylformamide solution to zinc oxide quantum dot/ethanol solution and stirring, and preparing polyvinylidene fluoride membrane.

SANG J, LI J, DI M, XU C, LIU X, ZHANG C

Preparing low-valent vanadium tail gas from ammonium metavanadate comprises e.g. heating and dissolving crude ammonium metavanadate in water, adding sodium hydroxide, generating ammonia gas, collecting, and adding aqueous ammonia.

ZHANG C