氢氧化镁作为废纸脱墨浆过氧化氢漂白碱源的研究

Hydrogen Peroxide Bleaching of DIP using Mg(OH)_2 as the Alkali Source

本文进行了Mg（OH）2作为废纸脱墨浆过氧化氢漂白碱源的实验研究，探讨了以废纸脱墨浆为原料，Mg（OH）2部分或全部取代NaOH对H2O2漂白的影响。研究结果表明，Mg（OH）2的取代率在10％-75％时，漂后浆料的白度较Mg（OH）2零取代率时的白度高；Mg（OH）2部分或全部取代NaOH进行H2O2漂白，残余H2O2增加，返黄值下降，COD负荷降低；Mg（OH）2全部取代NaOH后，纸张的抗张指数和撕裂指数稍有降低，耐破指数基本不变。

Bleaching of deinked pulp with hydrogen peroxide using Mg（OH）2 as the alkali source was investigated in this paper. When the substitution of Mg（OH）2 for 10%-75% NaOH results in the increase of pulp brightness. The brightness reversion and COD load can be decreased by using Mg（OH）2 as a substitute for NaOH. The total substitution of NaOH with Mg（OH）2 results in slightly decrease of the tensile index and tearing index as well as constant burst index.