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- W599494368 abstract "以碱木质素、谷氨酸钠及甲醛为原料,依据Mannich反应制备谷氨酸—木质素吸附剂（GA-L）。采用FT-IR和凯氏定氮表征其化学结构,并分析了吸附时间、吸附剂用量、pH值及反应温度对Pb2＋吸附性能的影响。研究结果表明,谷氨酸已接枝到木质素上,产物氮质量分数为2.62%;GA-L在3h达到饱和状态,最佳吸附剂用量为0.2g/L;对酸性介质中的Pb2＋具有良好的吸附性能,吸附容量随初始重金属离子质量浓度和温度的增加而增大;引入的胺基和羧基明显提高了木质素的络合能力,GA-L对Pb^2＋的吸附容量可达87.28mg/g,与未改性木质素（35.07mg/g）相比提高了148.87%。25℃时初始Pb2＋质量浓度在20～200mg/L范围内,吸附规律符合Langmuir平衡模型,吸附机理以单分子层化学吸附为主。" @default.
- W599494368 created "2016-06-24" @default.
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- W599494368 date "2009-10-25" @default.
- W599494368 modified "2023-10-16" @default.
- W599494368 title "谷氨酸—木质素吸附剂的制备及对Pb^2＋的吸附性能" @default.
- W599494368 hasPublicationYear "2009" @default.
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