摘要
利用NaOH对玉米秸秆进行预处理,并利用微波辐射的方法进行物理方式处理,选取含多官能团小分子的柠檬酸与玉米秸秆进行酯化反应,以添加羧基官能团的方式制备出吸附性能强的改性玉米秸秆吸附剂。研究了改性玉米秸秆吸附剂在不同条件下对Cu^(2+)吸附效果的影响。研究结果表明,改性玉米秸秆吸附剂对Cu^(2+)有很好的吸附性能。当吸附剂的投加量为0.8 g、pH值为5、反应时间90 min、反应温度35℃、溶液初始浓度60 mg/L时,对Cu^(2+)吸附效果最好。
Adsorption properties of Cu^(2+)in water after modification of corn straw adsorbent were studied.Pretreatment of corn stalk with NaOH and physical treatment with microwave radiation were used.Citric acid containing multi-functional small molecules was selected for esterification reaction with corn stalk.Modified corn stalk adsorbents with strong adsorption properties were prepared by adding carboxyl functional groups.Effect of modified corn straw adsorbent on adsorption under different conditions was studied.Results showed that adsorption effect of Cu^(2+)was best when adsorbent dosage was 0.8 g,pH value was 5,reaction time was 90 min,reaction temperature was 35℃,and initial concentration of solution was 60 mg/L.Modified corn straw adsorbent has good adsorption performance for Cu^(2+).
作者
徐长伟
刘鑫娜
XU Changwei;LIU Xinna(School of Materials Science and Engineering,Shenyang Jianzhu University,Shenyang Liaoning 110168,China)
出处
《农业工程》
2021年第6期54-60,共7页
AGRICULTURAL ENGINEERING
基金
辽宁省“兴辽英才计划”项目(XLYC1902103)。
