Fenton法处理模拟OCC造纸白水DCS的性质变化

Property Changes of DCS in OCC White Water Treating with Fenton Process

关键词:  OCC白水  DCS  Fenton法处理  GC-MS

Key Words:OCC white water  DCS  Fenton treatment  GC-MS

摘要:采用Fenton法处理模拟废旧箱纸板(OCC)造纸白水,分析了处理前后白水DCS性质和成分的变化。研究发现，Fenton法处理后DCS水的电导率由0.49 mS/cm升高到1.84 mS/cm,浊度由30.0 NTU下降到1.14 NTU,Zeta电位从-14.6 mV增大到-5.76 mV,DCS体系的平均粒径从429.5 nm 减小到301.7 nm,金属离子浓度普遍下降。利用气相色谱-质谱联用仪（GC-MS）分析发现,Fenton法处理可以有效降解OCC白水中DCS的棕榈酸、油酸、硬脂酸以及脱氢枞酸等脂肪酸类物质,其中,棕榈酸含量减少得最为明显,减少40.3%。

Abstract:Application of OCC was restricted due to the DCS problem in white water circulation system causing by adhesives and printing ink. Fenton process was employed to degrade DCS (dissolved and colloidal substance) in OCC white water. The changes of physical and chemical properties of the DCS were analyzed. The results showed that, after Fenton treatment, the conductivity of the white water increased from 0.49 mS/cm to 1.838 mS/cm; turbidity significantly decreased from 30 NTU to 1.14 NTU; Zeta potential slightly ascended from -14.6 mV to -5.76 mV and the average diameter of DCS particles drastically descended from 429.5 nm to 301.7 nm. The analysis of GC-MS indicated that, the aliphatic acid such as palmitic acid, oleic acid, stearic acid and dehydroabietic acid of the DCS in the white water could be degraded effectively by Fenton process.