木质素的氨化改性及其对孔雀石绿的吸附性能研究  

Ammoniation Modification of Lignin and Its Adsorption Properties for Malachite Green

作　　者：宋长永 高超[1] 刘忠明[1] 王守娟[1] 孔凡功[1] SONG Changyong;GAO Chao;LIU Zhongming;WANG Shoujuan;KONG Fangong(State Key Lab of Biobased Material and Green Papermaking,Faculty of Light Industry,Qilu University of Technology(Shandong Academy of Sciences),Ji’nan,Shandong Province,250353)

机构地区：[1]齐鲁工业大学(山东省科学院)轻工学部,生物基材料与绿色造纸国家重点实验室,山东济南250353

出　　处：《中国造纸》2023年第12期61-69,共9页China Pulp & Paper

基　　金：济南市高校“20条”自主培养创新团队项目(202228073);齐鲁工业大学科教产项目(2022JBZ01-05);德州中试基地项目(2022DZZS003)。

摘　　要：以木质素和聚乙烯胺(PVAM)为原料,分别采用直接和间接法制备氨化木质素吸附剂,以有效去除水中的孔雀石绿染料。采用多种分析手段对吸附剂进行分析检测,并对其在孔雀石绿溶液吸附中的应用效果及吸附机理进行了研究。结果表明,与直接氨化木质素相比,间接氨化木质素含有较多官能团,可以与更多的孔雀石绿染料分子结合,达到很好的吸附效果。当pH值=5,温度55℃,吸附时间100 min,吸附剂添加量1 g/L时,间接法制备的氨化氧化木质素对染料去除效果最佳,去除率可达96.5%,其吸附过程符合准二级动力学模型,吸附行为与Langmuir等温吸附模型相吻合。The ammoniated lignin adsorbent was prepared by direct and indirect methods,respectively,with lignin and polyvinylamine as raw materials to effectively remove malachite green dye from wastewater.Mutiple analytical technigues were used to analyze and detect the ad-sorbent.The adsorption effect and mechanism in the malachite green solution were analized.The results showed that ammoniated oxidized lig-nin prepared by indirect method had good adsorption performance for malachite green compared with direct ammoniated lignin due to its more functional groups.When pH value was 5,the temperature was 55℃,the adsorption time was 100 min,and the adsorption amount was 1 g/L,the optimal removal rate of dye achieved 96.5%.The adsorption process of malachite green was in accordance with the pseudo-second-order ki-netics,and the adsorption behavior was consistent with the Langmuir adsorption isotherms.

关 键 词：木质素 氨化改性 曼尼希反应 吸附 

分 类 号：TS79[轻工技术与工程—制浆造纸工程]