Preparing method of hydrogel microspheres adsorbing dye ions

• Main Authors: LIU QINZE, WEI GANG, GAO SONG, HU TAO, DONG KAIJIE
• Format: Patent
• Language: Chinese; English
• Published: 07.11.2017
• Subjects: CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY; CHEMISTRY; CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATERTREATMENT OR WASTE MANAGEMENT; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; METALLURGY; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE; THEIR RELEVANT APPARATUS; TRANSPORTING; TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE

The invention discloses a preparing method of hydrogel microspheres adsorbing dye ions. The microspheres comprise polyvinyl alcohol (PVA), tannin (TA) and sodium alginate (SA). The preparing method of the microspheres includes the steps that polyvinyl alcohol and sodium alginate are completely mixed and dissolved in water, a certain amount of tannin is added, reacted and mixed uniformly, and the mixed solution is added dropwise into a calcium chloride-boric acid solution to prepare the hydrogel microspheres. The hydrogel microspheres are high instability, free of agglomeration, low in cost, stable in performance, capable of being recycled and free of secondary pollution, and widely applied in the dye sewage treatment field, and the preparing process is simple and high in operability and repeatability. 本发明公开了种吸附染料离子的水凝胶微球的制备方法。所述微球包含聚乙烯醇（PVA）、单宁酸（TA）、海藻酸钠（SA）。该微球制备步骤如下：先将聚乙烯醇和海藻酸钠完全混合溶解在水中，再加入定量的单宁酸使其反应并混合均匀，最后用注射器将混合液滴入氯化钙-硼酸饱和溶液中制成水凝胶微球。本发明制备的水凝胶微球稳定性好，不会发生团聚现象，制备工艺简单、操作性强、重复性好、成本低廉、性能稳定，可循环利用并无二次污染，在染料污水处理领