河南农业大学学报2024，Vol.58Issue(5)：852-861,10.DOI:10.16445/j.cnki.1000-2340.20240709.001
脱木素方法对木材吸附亚甲基蓝的影响
Effect of delignification methods on the methylene blue adsorption of wood
摘要
Abstract
[Objective]Basha wood(Ochroma pyramidale)was used as raw material and delignified with different reagents to study the adsorption properties of different delignified wood for methylene blue(MB).[Method]The effects of initial concentration,contact time,ambient temperature and initial pH on the methylene adsorption of three kinds of delignified wood were investigated by single factor analy-sis,and their adsorption kinetics were studied.[Result]Delignification increased the porosity and the content of surface active functional groups of wood.The adsorption effect of the delignified wood by method 1(DW1)and Method 2(DW2)on methylene blue was significantly better than that of the delignified wood by method 3(DW3),which indicated that the method of delignification had a signifi-cant effect on the adsorption of methylene blue on wood.Under the condition of 35℃,the concentra-tion of MB solution 30 mg·L-1 and pH 10,the adsorption effect of DW1 for methylene blue is the best,and the maximum adsorption capacity is 12.47 mg·g-1.The adsorption process of methylene blue on delignified wood is more consistent with the pseudo-second-order kinetic model and Langmuir adsorption isotherm equation.[Conclusion]Compared with natural wood,delignified wood blocks can increase the adsorption capacity of methylene blue,and the adsorption effects of wood blocks obtained by different delignification methods are different.The delignified wood blocks with low price and sim-ple treatment have great potential value in water treatment.关键词
木材/脱木素/亚甲基蓝/吸附Key words
wood/delignification/methylene blue/adsorption分类
农业科技引用本文复制引用
谢文文,梁靖旖,周晨,周冰,王开立,董友明,李城..脱木素方法对木材吸附亚甲基蓝的影响[J].河南农业大学学报,2024,58(5):852-861,10.基金项目
河南省科技攻关项目(23212320346) （23212320346）
