| 海洋沉积物对重金属吸附特性研究 |
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| 引用本文： | 任加国,武倩倩.海洋沉积物对重金属吸附特性研究[J].海洋环境科学,2010,29(4). |
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| 作者姓名： | 任加国 武倩倩 |
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| 作者单位： | 山东科技大学地质科学与工程学院山东省沉积成矿作用与沉积矿产重点实验室; |
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| 基金项目： | 国家自然科学基金，山东省高等学校科技计划项目，山东科技大学科学研究"春蕾计划"项目 |
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| 摘 要： | 以渤海湾北部海域沉积物为研究对象,研究其对重金属Cu2+、Pb2+的吸附特性。将沉积物分为不同粒级,通过吸附动力学、吸附突跃和吸附等温实验,探讨粒度、pH值、吸附时间和吸附剂初始浓度对重金属吸附的影响。结果表明,沉积物粒径越小,对重金属的吸附量越大;吸附平衡时间有所差异,但在1.5 h均能达到吸附平衡;吸附量均随pH值升高而逐渐增加,但铜的吸附较铅的吸附速度快;铜的吸附量与吸附剂初始浓度呈线性关系,而铅的吸附量在初始浓度较低时变化明显,随初始浓度增加吸附量增加减小;铜的吸附等温线符合Freundlich型,而铅吸附等温线符合Langmuir型,吸附类型存在差异。
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| 关 键 词： | 重金属 沉积物 吸附 渤海湾 |
Study on adsorption character of marine sediment on heavy metal |
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| REN Jia-guo,WU Qian-qian.Study on adsorption character of marine sediment on heavy metal[J].Marine Environmental Science,2010,29(4). |
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| Authors: | REN Jia-guo WU Qian-qian |
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| Affiliation: | REN Jia-guo,WU Qian-qian(Shandong Provincial Key Laboratory of Depositional Mineralization & Sedimentary Minerals,Geological Science and Engineering College,Shandong University of Science and Technology,Qingdao 266510,China) |
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| Abstract: | The surface sediments of the north Bohai Bay were selected as the research objects to study the adsorption characteristics of the coastal sediments on Cu2+,Pb2+.The sediments are screened out to four gradational granularities to discuss the effects,pH value,adsorption time and initial concentration of the adsorbents.The results showed that the smaller granularity is the bigger saturated adsorption capacity.The adsorption equilibrium time of Cu2+,Pb2+ is different,but all can reach the adsorption equilibrium... |
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| Keywords: | heavy metal sediments adsorption the Bohai Bay |
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