| 两种褐藻对水溶液中Zn2+的吸附研究 |
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| 引用本文： | 周洪英,贾海红,李娜.两种褐藻对水溶液中Zn2+的吸附研究[J].食品研究与开发,2012,33(1):150-154. |
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| 作者姓名： | 周洪英 贾海红 李娜 |
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| 作者单位： | 淮海工学院化学工程学院,江苏连云港,222005 |
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| 基金项目： | 江苏省高校自然科学基础研究基金(07KJB610005) |
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| 摘 要： | 利用海带(Laminaria japonica)、裙带菜(Undaria pinnatifida)作为生物吸附剂,研究其对废水中Zn2+的吸附行为。结果表明:pH是影响生物吸附最重要的因素,两种海藻吸附Zn2+的最佳pH范围为4～7。动力学数据符合准二级动力学模型。Langmuir等温线模型能够成功地拟合平衡数据。红外光谱分析显示,羧基在生物吸附过程中发挥主要作用。人体消化道中的胃蛋白酶会抑制食物对锌的吸附。
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| 关 键 词： | 海藻 Zn2+ 生物吸附 平衡 动力学 |
Study on the Biosorption of Zn2+ by Two Brown Algae |
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| ZHOU Hong-ying
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JIA Hai-hong
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LI Na.Study on the Biosorption of Zn2+ by Two Brown Algae[J].Food Research and Developent,2012,33(1):150-154. |
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| Authors: | ZHOU Hong-ying JIA Hai-hong LI Na |
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| Affiliation: | (School of Chemical Engineering,Huaihai Institute of Technology,Lianyungang 222005,Jiangsu,China) |
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| Abstract: | Two brown algae Laminaria japonica and Undaria pinnatifida were used as biosorbents for their ability to remove Zn2+ from aqueous solutions.Results showed that the biosorption were significantly affected by initial solution pH.The optimal pH of biosorption was 4-7.Kinetics experiments results could be accurately described by pseudo-second order rate equation.The Langmuir isotherm models fitted the experimental data very well.The FTIR data showed that the carboxyl play a major role in biosorption process.Results showed that the pepsin in the digestive tract can restrain the biosorption. |
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| Keywords: | algae Zn2+ biosorption equilibrium kinetics |
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