生物酶替代烧碱处理亚麻织物获突破

一项采用生物酶替代烧碱对亚麻织物进行前处理的新技术，已经在深圳新龙亚麻纺织漂染公司试生产成功。据说．采用生物酶工艺进行亚麻织物前处理，属于漂染行业关键技术的重大突破．在国内尚属首创。

松式碱处理对竹纤维直接染料染色性能的影响

采用不同浓度的烧碱溶液对天然竹纤维进行松弛处理 ,然后采用直接染料染色 ,讨论了烧碱处理对竹纤维染色性能的影响及原因。研究结果表明 ,在 115～ 13 0 g/L碱浓范围内 ,直接染料上染量增加的幅度最大 ;当碱浓高于 160 g/L后 ,上染量几乎不再增加。与棉纤维相比较 ,直接染料对竹纤维的平衡上染百分率低、染深性差、上染速度慢 ,采用 190g/L以上浓度的烧碱处理 ,可使直接染料对竹纤维的平衡上染百分率。

烧碱及液氨对苎麻纤维微细结构的影响

通过对苎麻纤维进行液氨处理及烧碱处理,测定处理后苎麻纤维的结晶度、取向度、膨化度、钡值和聚合度,分析比较了苎麻纤维微细结构的变化,同时讨论了张力对膨化的影响.

Treatment of spent caustic by three kinds of photocatalyticoxidation processes

The investigation of the performance of UV/H2O2, UV/O3 and UV/H2O2/O3 oxidation systems treating spent caustic from an ethylene plant shows that in UV/H2O2 system, with the increase of H2O2dosage, removal efficiencies of COD and the ratio of biochemical oxygen demand （BOD） to chemical oxygen demand （COD） of the effluent were increased and a better performance was obtained than the H2O2system alone. In UV/H2O2 system, removal efficiency of COD reached 68% under the optimum condition, and BOD/COD ratio was significantly increased from 0.22 to 0.52. In UV/O3 system, with the increase of O3dosage, removal efficiency of COD and BOD/COD ratio were increased, and a better performance was obtained than the O3system alone. Under the optimum condition, removal efficiency of COD was 54%, and BOD/COD ratio was significantly increased from 0.22 to 0.48. In UV/H2O2/O3 system, COD removal efficiency was found to be 22.0% higher than UV/O3 system.