松木锯末吸附富营养化水体中磷的改性方法

发布时间：2018-07-29 10:27

【摘要】：采用改性后的松木锯末作为吸附剂,对富营养化水体的模拟水样中的磷进行吸附去除,优化了吸附剂的改性条件。实验结果表明,1 g锯末所需的改性试剂的最佳相对用量分别为:二甲胺水溶液10 m L、吡啶7.5 m L、环氧氯丙烷20 m L、N,N-二甲基甲酰胺30 m L;各阶段的最佳时间分别为:第三阶段时间1.5 h、第二阶段1 h、第一阶段1 h。在优化的实验条件下,改性松木锯末对富营养化水体的模拟水样中磷的去除率可达90%以上。
[Abstract]:The modified pine sawdust was used as adsorbent to remove phosphorus from eutrophication water samples and the modification conditions of the adsorbent were optimized. The experimental results show that the optimum relative dosage of the modified reagent for 1 g sawdust is 10 mL of dimethylamine solution, 7.5 mL of pyridine, and 20 mL of epichlorohydrin, and the optimum time of each stage is 30 mL, respectively, of dimethylamine solution, pyridine 7.5 mL and epichlorohydrin 20 mL, respectively. The time of the third stage was 1.5 hours, the second stage was 1 hour, and the first stage was 1 hour. Under the optimized experimental conditions, the phosphorus removal rate of the simulated eutrophication water samples from the modified pine sawdust can reach more than 90%.
【作者单位】：河北大学化学与环境科学学院;
【基金】：十二五国家重大水专项(2012ZX07203-003-Z02)资助
【分类号】：X52

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