| 二氧化硅接枝杨梅单宁用于水体中Cu2+的吸附去除 |
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| 引用本文： | 冯远春,黄鑫,王艳平,廖学品,石碧.二氧化硅接枝杨梅单宁用于水体中Cu2+的吸附去除[J].皮革科学与工程,2010,20(2). |
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| 作者姓名： | 冯远春 黄鑫 王艳平 廖学品 石碧 |
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| 作者单位： | 1. 四川大学制革清洁技术国家工程实验室,四川,成都,610065
2. 四川大学生物质与皮革工程系,四川,成都,610065 |
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| 基金项目： | 国家自然科学基金重点项目(20536030);;国家自然科学基金(20776090);;全国百篇优秀博士论文作者专项基金(FANEDD200762) |
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| 摘 要： | 采用微乳法制备了氨基化二氧化硅(NH2-SiO2),并通过Mannich反应将杨梅单宁(bayberry tannin)接枝到氨基化二氧化硅表面制备了一种新型的吸附剂,即二氧化硅接枝杨梅单宁(SiO2-BT)。对SiO2-BT吸附剂进行了红外光谱(FTIR)和X射线光电子能谱(XPS)分析,并系统的研究了该吸附剂对水溶液中Cu2+的吸附特性,包括pH的影响?吸附动力学?吸附等温线?共存离子的影响和解吸性能。结果表明:SiO2-BT能有效去除水溶液中的Cu2+,30℃时平衡吸附容量达到28.1 mg/g,且随着温度的升高吸附容量增大。SiO2-BT对Cu2+的吸附动力学符合拟一级速率方程,吸附平衡符合Langmuir方程。此外,SiO2-BT对Cu2+的吸附具有吸附速率快?吸附容量大且易于解吸的特点,可用于水体中Cu2+的吸附去除。
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| 关 键 词： | 杨梅单宁 氨基化二氧化硅 Cu2+ 吸附 |
Adsorptive Removal of Cu2+ in Aqueous Solutions Using Silica Grafted with Bayberry Tannin |
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| FENG Yuan-chun,HUANG Xin,WANG Yan-ping,LIAO Xue-pin,SHI Bi.Adsorptive Removal of Cu2+ in Aqueous Solutions Using Silica Grafted with Bayberry Tannin[J].Leather Science and Engineering,2010,20(2). |
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| Authors: | FENG Yuan-chun HUANG Xin WANG Yan-ping LIAO Xue-pin SHI Bi |
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| Affiliation: | 1.National Engineering Laboratory for Clean Technology of Leather Manufacture/a>;Sichuan University/a>;Chengdu 610065/a>;China/a>;2.Department of Biomass and Leather Engineering/a>;China |
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| Abstract: | Aminated silica beads(NH2-SiO2) were prepared using microemulsion method,and then grafted with bayberry tannin through the Mannich reaction to prepare a novel adsorbent,namely silica grafted with bayberry tannin(SiO2-BT).The obtained adsorbent was characterized by Fourier Transform Infrared spectrometry(FTIR) and X-ray Photoelectron Spectroscopy(XPS).Furthermore,the adsorption behaviors of Cu2+ on SiO2-BT were systematically investigated,including pH effect,kinetics,isothermals,co-existing ions effect and d... |
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| Keywords: | bayberry tannin aminated silica Cu2+ adsorption |
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