水分散苎麻麻骨饼的制备及其性能

发布时间：2018-05-13 09:51

本文选题：苎麻麻骨 + 水分散　；参考：《复合材料学报》2016年08期

【摘要】：为探索苎麻麻骨治理重金属废水的工业化应用可行性,首先,利用激光粒度仪、SEM和FTIR等表征手段对苎麻麻骨微粒进行微观表征,探明了苎麻麻骨的微观结构;然后在此基础上,将苎麻麻骨微粒与环境友好型天然润湿剂、黏结剂及崩解剂混合,按一定工艺流程加工成水分散苎麻麻骨饼(WDRSC),在配方筛选过程中,测试了各种助剂质量分数对WDRSC性能的影响,并对苎麻麻骨与WDRSC吸附重金属Cu2+和Cd2+的能力进行了比较。结果显示:苎麻麻骨为具有多孔隙结构的天然物质,表面具有大量的吸附位点和官能团;当WDRSC配方中麻骨、润湿剂、黏结剂和崩解剂的质量比为75∶13∶2∶10时,WDRSC入水后能迅速被水润湿(润湿时间小于60s)并自动崩解(崩解时间小于60s),60s内悬浮率达80%左右,各项性能均符合水分散颗粒剂的要求;润湿剂、黏结剂和崩解剂均能不同程度地影响WDRSC的相关性能;与苎麻麻骨相比,WDRSC对Cd2+与Cu2+的去除率分别提高了11%和4%。所得结论表明将苎麻麻骨制成WDRSC具有运输和使用方便、成本低廉、制作工艺简单且吸附后废渣处理方便等优点,为苎麻麻骨规模化利用的可行方法。
[Abstract]:In order to explore the feasibility of industrial application of Ramie bone in the treatment of heavy metal wastewater, firstly, the microscopic characterization of Ramie bone particles was carried out by means of laser particle size analyzer and FTIR, and the microstructure of Ramie bone was investigated. Ramie bone particles were mixed with environment-friendly natural wetting agent, binder and disintegrating agent, and water dispersed Ramie bone cake was prepared according to certain technological process. In the process of formulation selection, the effects of various additives on the properties of WDRSC were tested. The ability of Ramie bone to adsorb heavy metals Cu2 and Cd2 was compared with that of WDRSC. The results show that Ramie bone is a natural material with porous structure and has a large number of adsorption sites and functional groups on the surface. The mass ratio of binder to disintegrant is 75: 13: 2: 10. When WDRSC enters water, WDRSC can be wetted by water (wetting time is less than 60 s) and automatically disintegrating (disintegrating time is less than 60 s), the suspension rate of WDRSC can reach about 80% within 60 seconds. The wetting agent, binder and disintegrating agent can affect the correlativity of WDRSC to some extent, and the removal rate of Cd2 and Cu2 in Ramie bone is increased by 11% and 4%, respectively, compared with Ramie bone. The results showed that WDRSC prepared from Ramie bone had the advantages of convenient transportation and use, low cost, simple manufacturing process and convenient disposal of waste residue after adsorption. It was a feasible method for large-scale utilization of Ramie bone.
【作者单位】：南昌大学资源环境与化工学院;
【基金】：国家自然科学基金(21067008)
【分类号】：TQ424;X703

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