The invention relates to a preparation method of magnetic gelatin microspheres, which comprises the following steps: firstly, adding to the magnetic gelatin solution, ultrasonic dispersion; secondly, under the protection of nitrogen, the dispersion of magnetic gelatin solution added to the mixed solution of liquid paraffin and emulsifier, emulsified in 60 + 10 DEG C; then the ice bath cooling, after cross-linking agent was added to the previous step in the emulsion reaction; then, the product of a step with acetone and isopropanol alternately until the washing liquid paraffin was washed; finally, the product was separated by a magnet, separated into the drying box for drying, can be obtained by magnetic gelatin microspheres; the invention also provides a method for the removal of anionic dye in dyeing wastewater by magnetic gelatin microspheres prepared by the above method, which comprises the following steps: firstly, the printing and dyeing wastewater treatment pH value allocation To 2~8, secondly, the magnetic gelatin microspheres were added to the printing and dyeing wastewater; finally, after 20~40 DEG C reaction, the external magnetic field was used to separate the solid and liquid.
【技术实现步骤摘要】
本专利技术属于环境
,涉及一种磁性明胶微球的制备及其对印染废水中阴离子染料的去除方法。
技术介绍
染料作为一种化工原料,被广泛应用于纺织、造纸等各个行业,随之产生大量的染料废水。一方面造成资源浪费,另一方面给环境造成巨大危害。染料废水有如下特征(1) 染料在水中溶解度高,一旦排入江河则很难再加以分离;(2)色度高,即使浓度为lmg/kg也可以被肉眼观察到,而且影响水生物的光合作用;(3)高毒性,目前被广泛使用的主要为偶氮类染料,水源一旦被污染不可再作为人和家畜的饮用水;(4)难降解,在日常条件下如 日照、加热、氧化都很难使其分解。因此,染料废水的高效处理对环境保护具有重要的意义。目前,主要采用吸附法处理染料废水。作为吸附剂的物质有活性炭、树脂、天然矿物、废弃物等,但活性炭和树脂成本较高,天然矿物和废弃物生物降解性差,且处理废水之后不易分离。而明胶来源广泛,成本较低,且生物活性高,利用其制备的微球比表面积大,投放量小,吸附效率高。加上包埋在其中的磁粉在磁场下赋予该吸附剂分离功能,易于回收,避免造成二次污染,符合当今世界绿色化学的发展要求。但是,在磁性明胶微球 ...
【技术保护点】
1.一种磁性明胶微球的制备方法,包括以下步骤,第一步,将明胶溶于水中得到质量浓度为20%~40%的明胶溶液,然后按磁粉∶明胶=1∶(2~5)的质量比将磁粉加入到明胶溶液中,超声分散5~10min;第二步,在氮气保护下,将第一步中分散有磁粉的明胶溶液按明胶溶液∶液体石蜡=1∶(3~6)的体积比加入到液体石蜡与乳化剂的混合溶液中,其中乳化剂与液体石蜡的体积比为1∶(40~100),在60±10℃下乳化15~30min;第三步,冰浴降温至0~4℃,5~10min后按交联剂∶明胶=1∶(4~7)的质量比将交联剂加入到第二步的乳液中,反应2~3h;第四步,将第三步的产物用丙酮和异丙醇 ...
【技术特征摘要】
【专利技术属性】
技术研发人员:王学川,郝晓丽,贺宝元,强涛涛,
申请(专利权)人:陕西科技大学,
类型:发明
国别省市:87
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