硫酸盐木质素的提取改性及用于染发废水脱色的研究  

Extraction of lignin from black liquor of papermaking and application of wastewater treatment

作　　者：宋长永 高超[1] 宜延彬 刘忠明[1] 王守娟[1] 孔凡功[1] SONG Chang-yong;GAO Chao;YI Yan-bin;LIU Zhong-ming;WANG Shou-juan;KONG Fan-gong(State Key Laboratory of Bio-Based Material and Green Papermaking,Qilu University of Technology(Shandong Academy of Sciences),Jinan 250353,China)

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

出　　处：《齐鲁工业大学学报》2022年第4期42-49,共8页Journal of Qilu University of Technology

基　　金：国家自然科学基金面上项目(31971605,31800499);山东省自然科学基金(ZR2020MC156);山东省重大科技创新工程(2019JZZY010407,2019JZZY010304);山东省科教产融合创新试点工程项目(2020KJC-ZD06,2020KJC-ZD13)。

摘　　要：采用2,3-环氧丙基三甲基氯化铵(EPTAC)对制浆黑液中提取的木质素进行改性制备木质素季铵盐(木质素-EPTAC)。采用红外、热重、X射线光电子能谱、元素分析等手段对改性后的木质素进行结构和性能分析。分别探究了温度、时间、木质素-EPTAC用量、pH对模拟以及染发废水去除率的影响。结果表明,木质素-EPTAC对刚果红溶液吸附最优条件为:木质素-EPTAC质量浓度为95 mg/L,处理时间为30 min,温度为40℃,pH为10,在此条件下去除率为89.7%。在对染发废水处理过程中,当木质素-EPTAC质量浓度为270 mg/L时,对废水具有最佳的去除率,去除率为96.1%。当木质素-EPTAC质量浓度为460 mg/L时,对A、B、C混合染发废液具有最佳的处理效果,最佳去除率为98.1%。Lignin extracted from black liquor was modified with 2,3-epoxy-propyl trimethylammonium chloride(EPTAC),and lignin quaternary ammonium salt was prepared.The modified lignin was characterized by infrared spectroscopy,thermogravimetric analysis,X-ray photoelectron spectroscopy and elemental analysis.The effects of temperature,time,lignin-EPTAC dosage and pH value on the removal rate of simulated hair dyeing wastewater were investigated respectively.The results showed that the optimal adsorption conditions of Congo red solution by lignin-EPTAC were as follows:the dosage of lignin-EPTAC was 95 mg/L,the treatment time was 30 min,the temperature was 40℃,the pH was 10,and the removal rate was 89.7%under these conditions.In the process of hair dyeing wastewater treatment,when the amount of lignin-EPTAC was 270 mg/L,it has the best removal rate of wastewater,the removal rate was 96.1%.When the lignin-EPTAC concentration is 460 mg/L,the treatment effect of A,B,C mixed waste liquid is the best,the best removal rate is 98.1%.

关 键 词：木质素 季铵化改性 刚果红溶液 染发废水 

分 类 号：TQ35[化学工程]