微波辐照合成麦草碱木质素三甲基季铵盐的分散与絮凝性能  

Dispersibility and flocculability of a trimethy quaternary ammonium salt of wheat-alkali-lignin under microwave irradiation

作　　者：任世学[1,2] 方桂珍[1] 马艳丽[1] 王鹏[2] 

机构地区：[1]东北林业大学生物质材料科学与技术教育部重点实验室 [2]哈尔滨工业大学绿色化学与技术研究中心

出　　处：《北京林业大学学报》2012年第6期137-142,共6页Journal of Beijing Forestry University

基　　金：国家林业局林业公益性行业科研专项(200904072);国家自然科学基金项目(30901135);中央高校基本科研业务费专项(DL09BB10)

摘　　要：以造纸黑液中提取的麦草碱木质素为原料,在微波辐照下合成了麦草碱木质素三甲基季铵盐,检测其絮凝和分散性能。结果表明:麦草碱木质素三甲基季铵盐的表面张力随着质量浓度的增加而降低,当质量浓度为500mg/L时,表面张力为63.64mN/m,水溶液表面张力降低效果不明显;对碳酸钙颗粒具有一定的分散性能,可以将其作为阻垢剂使用;对酸性染料酸性红B和酸性橙GG均有脱色作用,且对酸性橙GG的脱色率更高;质量浓度为300～500mg/L、pH值不高于3时,对质量浓度为1000mg/L的高岭土胶体颗粒悬浮液具有絮凝沉降作用。The trimethyl quaternary ammonium sah was synthesized under microwave irradiation with wheat- alkali-lignin as raw material, which was extracted from black liquor from the kraft process. Its dispersibility and flocculability were determined： surface tension decreased with the increasing concentration of trimethyl quaternary ammonium salt, degreasing of surface tension was less effective toward water, the surface tension was 63.64 mN/m with its concentration of 500 mg/L;it had a certain dispersion of calcium carbonate particles and can be used as a scale inhibitor; the flocculation of trimethy quaternary ammonium salt was examined by the acid dye of Acid Red B and Acid Orange GG, and the results showed that the acid dye of Acid Red B and Acid Orange GG could be flocculated, and decolorization of Acid Orange GG was higher; the trimethyl quaternary ammonium salt had sedimentation of flocculation with a concentration of 1 000 mg/L kaolin colloidal particle at a concentration of 300 - 500 mg/L with pH values of no more than 3.

关 键 词：麦草碱木质素三甲基季铵盐 分散性能 絮凝性能 

分 类 号：X793[环境科学与工程—环境工程]