【作者】 乔乔； 邓胜松； 吴道荣； 付鹏； 姚日生； 王淮；

【Author】 QIAO qiao~1,DENG Sheng-song~(1,2),WU Dao-rong~1,FU Peng~1,YAO Ri-sheng~(1,2),WANG Huai~(1,2) (1.School of Medical Engineering,Hefei University of Technology,Hefei 230009,China;2.Engineering Research Center of Bioprocess of Ministry of Education,Hefei University of Technology,Hefei 230009,China)

【机构】 合肥工业大学医学工程学院； 农产品生物化工教育部工程研究中心；

【摘要】 木质素作为储量第二大的天然生物质高分子材料,对其进行高效开发利用,是有效解决当前化石资源缺乏的重要途径之一。以稻草秸秆木质素为原料,采用常规油浴及微波辅助聚合的方法,制备出木质素-聚丙烯酸凝胶吸附剂。采用IR、UV、TEM等手段分析了产物的结构特征,并分别考查了其对Cu²⁺和木瓜蛋白酶的吸附性能。通过不同反应条件对合成所得木质素-聚丙烯酸凝胶吸附性能的影响研究表明,在投料比（木质素:丙烯酸）为4:1,反应体系pH值为9,反应温度为100℃时合成的凝胶对Cu²⁺具有最佳吸附性能;在投料比为1:1,反应体系pH值为9,反应温度为100℃时对木瓜蛋白酶具有最佳吸附性能,其中对Cu²⁺的吸附容量可达76.7 mg/g,对木瓜蛋白酶的吸附容量可达500.0 mg/g。更多还原

【Abstract】 As the second abundant biopolymers,lignin was a great potential of renewable resources and it was effective to solve the current dilemma of fossil resources.In this paper,lignin-polyacrylic acid gel adsorbent was successfully prepared from straw lignin based on the conventional oil bath and microwave-assisted synthesis methods.IR,UV and TEM were utilized to analysis the gel structure.The adsorption of the Cu²⁺ and papain was detected to analysis its adsorption capacity.For Cu²⁺ adsorption,the optimum reactant ratio（lignin:acrylic acid） was 4:1,the optimum reaction system pH value was 9,the optimum temperature was 100℃.For papain adsorption,the optimum reactant ratio was 1:1,the optimum reaction system pH value was 9 and the optimum temperature was 100℃.The Cu²⁺ adsorption capacity can reach 76.7 mg/g,papain adsorption capacity can reach 500.0 mg/g.更多还原