| 海藻酸钠-铁凝胶球对无机磷和Cr2O72-吸附 |
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| 引用本文： | 史沫男,邓洁璇,李永峰,林永波.海藻酸钠-铁凝胶球对无机磷和Cr2O72-吸附[J].哈尔滨商业大学学报(自然科学版),2012(1):31-35. |
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| 作者姓名： | 史沫男 邓洁璇 李永峰 林永波 |
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| 作者单位： | 东北林业大学林学院环境科学系 |
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| 基金项目： | 国家博士后基金(LRB05-335);东北林业大学科研启动资金项目 |
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| 摘 要： | 对海藻酸钠在氯化铁溶液中的成球特性,制备海藻酸钠-铁(SA-Fe)凝胶球,并对废水中无机磷和Cr2O72-吸附容量及吸附机理进行了研究.结果表明,SA-Fe凝胶球对溶液中的无机磷和Cr2O72-有较强的吸附能力,且SA-Fe凝胶球在对无机磷和Cr2O72-的吸附过程中优先吸附无机磷.相对于Cr2O72-,PO43-与Fe3+的结合具有优先级.SA-Fe凝胶球吸附无机磷和Cr2O7-2的等温吸附曲线都更加符合Langmuir型,吸附行为属于单分子层吸附,凝胶球网络中的Fe3+与溶液中Cr2O72-和PO43-发生化学反应,生成Fe2(Cr2O7)3和FePO4,被吸附于凝胶网格中去除.
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| 关 键 词： | 海藻酸钠-铁凝胶球 重铬酸钾 无机磷 吸附 |
Research on removal of Cr2O72- and phosphorus in waste-water by sodium alginate-iron gel ball |
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| SHI Mo-nan,DENG Jie-xuan,LI Yong-feng,LIN Yong-bo.Research on removal of Cr2O72- and phosphorus in waste-water by sodium alginate-iron gel ball[J].Journal of Harbin University of Commerce :Natural Sciences Edition,2012(1):31-35. |
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| Authors: | SHI Mo-nan DENG Jie-xuan LI Yong-feng LIN Yong-bo |
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| Institution: | (Department of Envionmental Science,School of Forestry,Northeast Forestry University,Harbin 150040,China) |
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| Abstract: | The features of the sodium alginate into a ball in ferric chloride and the characters of gel ball SA-Fe adsorbing phosphorus and Cr2O72-were studied in this experiment.The results showed that the gell ball SA-Fe had strong ability to adsorb phosphorus and Cr2O72-.And the gel ball SA-Fe preferentially adsorbs phosphorus.Relative to Cr2O72-,PO43-has priority level to combine with Fe3+.The adsorption type of gel ball SA-Fe adsorbing phosphorus and Cr2O72-belonged to Langmuir adsorption isothermal curve which was single molecule layer adsorption.The Fe3+ in gel ball reacted with the Cr2O72-and PO3-4 in solution.And Fe2(Cr2O7)3 and FePO4 were produced in grids and were wiped off. |
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| Keywords: | sodium alginateiron gel ball potassium dichromate phosphorus adsorption |
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