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藻类吸附剂对六价铬的吸附特性

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王岩, 代群威, 陈国华, 高超, 王先念. 藻类吸附剂对六价铬的吸附特性[J]. 环境工程学报, 2014, 8(5): 1769-1774.
引用本文: 王岩, 代群威, 陈国华, 高超, 王先念. 藻类吸附剂对六价铬的吸附特性[J]. 环境工程学报, 2014, 8(5): 1769-1774.
shu
Wang Yan, Dai Qunwei, Chen Guohua, Gao Chao, Wang Xiannian. Cr (Ⅵ) adsorption characteristic of alga adsorbent[J]. Chinese Journal of Environmental Engineering, 2014, 8(5): 1769-1774.
Citation: Wang Yan, Dai Qunwei, Chen Guohua, Gao Chao, Wang Xiannian. Cr (Ⅵ) adsorption characteristic of alga adsorbent[J]. Chinese Journal of Environmental Engineering, 2014, 8(5): 1769-1774.
shu

藻类吸附剂对六价铬的吸附特性

  • 1.

    固体废物处理与资源化省部共建教育部重点实验室, 绵阳 621010

  • 2.

    四川省环境工程自控技术重点实验室, 绵阳 621010

  • 3.

    浙江省海盐县环境监测站, 海盐 314300

  • 基金项目:

    国家自然科学基金资助项目（41102212）

    四川省教育厅青年基金资助项目（11zb105）

  • 中图分类号: X703.1

Cr (Ⅵ) adsorption characteristic of alga adsorbent

  • 1.

    Key Laboratory of Solid Waste Treatment and the Resource Recycle, Ministry of Education (SWUST), Mianyang 621010, China

  • 2.

    Key Laboratory of Sichuan Province Auto Control Technology of Environment Engineering, Mianyang 621010, China

  • 3.

    Environmental Monitor Station of Haiyan County, Zhejiang Province, Haiyan 314300, China

  • Fund Project:

  • 摘要: 以浮游藻类制成的生物吸附剂为对象，研究了不同液相起始pH、吸附剂用量Cm和不同吸附时间t等因素对生物吸附剂吸附Cr（Ⅵ）的影响，并进行了热力学分析和对吸附前后藻类吸附剂进行了FTIR分析。结果表明，最佳吸附条件为：在起始pH=1.0，吸附剂用量Cm=6.0 g/L，吸附时间t=180 min，吸附温度T=30℃时吸附效率达到了92.10%；藻类吸附剂对Cr（Ⅵ）的吸附能很好地符合Langmuir模型和Freundlich模型，在实验的温度范围内，ΔG0均为负值，说明实验条件下藻类吸附剂对Cr（Ⅵ）的吸附反应能够自发进行；红外图谱显示在1 261~1 537 cm-1和1 034~1 053 cm-1区域峰发生了明显变化，说明其为细胞上的多糖、蛋白质等成分更多地参与了对Cr（Ⅵ）的吸附过程。由此可见，利用中水里生长的藻类制成生物吸附剂，吸附Cr（Ⅵ）具有可行性，吸附速率较高，吸附平衡时间较快。
    Abstract: In this experiment, the effects of time (t), initial pH, amount of adsorbent (Cm) on the adsorption efficiency of Cr (Ⅵ) were studied, besides, the thermomechanical analysis and Fourier transform infrared spectroscopy (FTIR) analysis for algae adsorbent were also applied in this experiment. The results show that the optimized adsorption condition were as follows: pH=1.0, Cm=6.0 g/L, t=180 min, T=30℃, and the adsorption efficiency was 92.10%. The Cr (Ⅵ) adsorption on algae adsorbent was found to be fitted with Langmuir model and Freundlich model. The ΔG0 were always negative under experimental temperature ranges, and it demonstrated that the adsorption reactions were spontaneous. Significant change at the wave number range of 1 261~1 537 cm-1 and 1 034~1 053 cm-1 of FTIR spectrum demonstrated that some extracellular secretion increased adsorption amount, such as polysaccharide and protein. Therefore, using the growth of algae in recycled water to make biological adsorbent, adsorption Cr (Ⅵ) is feasible, it has high adsorption efficiency and needs short adsorption time.
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  • 收稿日期:  2013-05-04
  • 刊出日期:  2014-05-06
王岩, 代群威, 陈国华, 高超, 王先念. 藻类吸附剂对六价铬的吸附特性[J]. 环境工程学报, 2014, 8(5): 1769-1774.
引用本文: 王岩, 代群威, 陈国华, 高超, 王先念. 藻类吸附剂对六价铬的吸附特性[J]. 环境工程学报, 2014, 8(5): 1769-1774.
shu
Wang Yan, Dai Qunwei, Chen Guohua, Gao Chao, Wang Xiannian. Cr (Ⅵ) adsorption characteristic of alga adsorbent[J]. Chinese Journal of Environmental Engineering, 2014, 8(5): 1769-1774.
Citation: Wang Yan, Dai Qunwei, Chen Guohua, Gao Chao, Wang Xiannian. Cr (Ⅵ) adsorption characteristic of alga adsorbent[J]. Chinese Journal of Environmental Engineering, 2014, 8(5): 1769-1774.
shu

藻类吸附剂对六价铬的吸附特性

  • 1.  固体废物处理与资源化省部共建教育部重点实验室, 绵阳 621010
  • 2.  四川省环境工程自控技术重点实验室, 绵阳 621010
  • 3.  浙江省海盐县环境监测站, 海盐 314300
  • 收稿日期:  2013-05-04
基金项目:

国家自然科学基金资助项目（41102212）

四川省教育厅青年基金资助项目（11zb105）

摘要: 以浮游藻类制成的生物吸附剂为对象，研究了不同液相起始pH、吸附剂用量Cm和不同吸附时间t等因素对生物吸附剂吸附Cr（Ⅵ）的影响，并进行了热力学分析和对吸附前后藻类吸附剂进行了FTIR分析。结果表明，最佳吸附条件为：在起始pH=1.0，吸附剂用量Cm=6.0 g/L，吸附时间t=180 min，吸附温度T=30℃时吸附效率达到了92.10%；藻类吸附剂对Cr（Ⅵ）的吸附能很好地符合Langmuir模型和Freundlich模型，在实验的温度范围内，ΔG0均为负值，说明实验条件下藻类吸附剂对Cr（Ⅵ）的吸附反应能够自发进行；红外图谱显示在1 261~1 537 cm-1和1 034~1 053 cm-1区域峰发生了明显变化，说明其为细胞上的多糖、蛋白质等成分更多地参与了对Cr（Ⅵ）的吸附过程。由此可见，利用中水里生长的藻类制成生物吸附剂，吸附Cr（Ⅵ）具有可行性，吸附速率较高，吸附平衡时间较快。

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