Innovation Center, Yuhan-Kimberly, Seoul, Republic of Korea.
Dept. of Urban Environment Engineering, Kyungnam University, Republic of Korea.
Waste Manag. 2017 Sep;67:11-19. doi: 10.1016/j.wasman.2017.04.027. Epub 2017 May 9.
By utilizing laboratory-scale tests, the optimal separation conditions for diaper recycling were identified, and then, these conditions were validated by a pilot trial. In this research, we determined the mass balances derived during various processing steps and identified the most feasible procedures to use for separating each material in the output flow. The results showed that drum screening was not able to remove all the fiber and super absorbent particles (SAP) in the plastic-rich fraction and that cellulose enzyme treatment can be a good solution. To achieve better separation of fibers and SAP, slot screening followed by a cleaner is a potential option. A feasible diaper recycling process was recommended based on these results. This process involves screening and enzymatic treatment for the plastic fraction, and screening, cleaning, and thickening for the fiber fraction. Treatment procedures were also proposed for the SAP fraction and rejected materials.
利用实验室规模的试验，确定了纸尿裤回收的最佳分离条件，然后通过中试验证了这些条件。在这项研究中，我们确定了在各个处理步骤中得出的质量平衡，并确定了用于分离输出流中每种材料的最可行的程序。结果表明，滚筒筛选不能去除富含塑料的部分中的所有纤维和高吸水性聚合物颗粒（SAP），而纤维素酶处理可能是一个很好的解决方案。为了更好地分离纤维和 SAP，可以选择狭缝筛选，然后进行清洗。基于这些结果，推荐了一种可行的纸尿裤回收工艺。该工艺涉及对塑料部分进行筛选和酶处理，对纤维部分进行筛选、清洗和浓缩。还提出了针对 SAP 部分和废弃材料的处理程序。
