The Recycling of the Tetra-Pak Packages Research on the Wet Process Separation Conditions of Aluminum and Polythene in the Tetra-Pak Packages
The recycling of tetra-pak packages composed of paper, low-density polyethylene (LDPE), and aluminum is of great recycling significance. The recovering of paper, the major component, was conducted through a Hydrapulper apparatus. The wet separation conditions of the remaining part, a laminated sheet composed of LDPE (0.03～0.08mm) and aluminum foil (0.02～0.03mm)(Al-PE), was studied in this paper. The separation effect of different separation reagents was compared, and the major process influencing factors, such as the separation reagent concentration, reaction temperature, liquid to solid ratio and solid size was studied. By orthogonal design experiment and variance analysis based on three evaluating indicators, the optimum condition of aluminum and LDPE complete separation using methanoic acid as separation reagent was obtained: 4 mol/L of methanoic acid concentration, 60 ℃ of reaction temperature, 60L/kg of liquid to solid ratio and 5×5cm of solid size, under which the separation rate would reach 100％.
Tetra-Pak Packages Al-PE separation wet process orthogonal design ezperiment variance analysis
ZHANG Ji-fei YAN Da-hai LI Zhong-he
Research Institute of Solid Waste Management,CRAES School of Chemical and Environmental Engineering, Research Institute of Solid Waste Management CRAES Beijing,China School of Chemical and Environmental Engineering CUMTB Beijing,China
国际会议
北京
英文
1-6
2009-06-11（万方平台首次上网日期，不代表论文的发表时间）