Propylene glycol modified chitosan adsorbent as well as preparation method and application thereof in germanium adsorption

• Main Authors: CUI JUNSHUO, WANG YUEJIAO, CHEN HUI, YU HAIBIAO, XIONG YING, SHAN WEIJUN, LOU ZHENNING, SONG XINLUN
• Format: Patent
• Language: Chinese; English
• Published: 23.04.2021
• Subjects: CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY; CHEMISTRY; FERROUS OR NON-FERROUS ALLOYS; METALLURGY; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; PRETREATMENT OF RAW MATERIALS; PRODUCTION AND REFINING OF METALS; SEPARATION; THEIR RELEVANT APPARATUS; TRANSPORTING; TREATMENT OF ALLOYS OR NON-FERROUS METALS

The invention belongs to the technical field of effective recovery of metal germanium and preparation of biomass derivative adsorbing materials, and particularly relates to a propylene glycol modified chitosan adsorbent as well as a preparation method and application thereof in germanium adsorption. According to the technical scheme, the preparation method comprises the steps of firstly, properly soaking a proper amount of chitosan with hydroxyethyl methacrylate, K2S2O8 and Na2S2O3 in water, and carrying out free radical polymerization reaction; and carrying out reflux reaction on the intermediate product polymer and 3-chloro-1,2 propylene glycol for 24 hours, and introducing an ortho-diol functional group into a chitosan molecule as a Ge(IV) adsorption site on the introduced hydroxyl to obtain the propylene glycol modified chitosan HEMA-IDOI-CS. The adsorbent disclosed by the invention has the advantages that the preparation process is simple and convenient; the cost is low; the raw material chitosan is prep