碳纳米管/海藻酸钠复合材料从水溶液中去除铜。
Removal of copper from aqueous solution by carbon nanotube/calcium alginate composites.
机构信息
Laboratory of Fiber Materials and Modern Textile, The Growing Base for State Key Laboratory, Qingdao University, 308 Ningxia Road, Qingdao 266071, China.
出版信息
J Hazard Mater. 2010 May 15;177(1-3):876-80. doi: 10.1016/j.jhazmat.2009.12.114. Epub 2010 Jan 6.
With bulk production and increasing application of carbon nanotubes (CNTs) as adsorbents in wastewater treatment, they will eventually be discharged into water environment and result in human contact risk to these toxic materials. However, so far few attentions have been paid to resolve the environmental micro-pollution caused by these micro-sized CNTs. In this research, an environmental friendly adsorbent, CNTs immobilized by calcium alginate (CNTs/CA) was prepared. Its copper adsorption properties were investigated via equilibrium studies. Experimental results showed that copper removal efficiency of CNTs/CA is high and reaches 69.9% even at a lower pH of 2.1. The copper adsorption capacity of CNTs/CA can attain 67.9 mg/g at copper equilibrium concentration of 5mg/L.
随着碳纳米管（CNTs）作为吸附剂在废水处理中的批量生产和应用的增加，它们最终将被排放到水环境中，使人类接触到这些有毒物质的风险增加。然而，到目前为止，人们很少关注解决这些微纳米 CNTs 造成的环境微污染问题。在这项研究中，制备了一种环境友好型吸附剂，即用海藻酸钠固定的碳纳米管（CNTs/CA）。通过平衡研究考察了其对铜的吸附性能。实验结果表明，即使在较低的 pH 值 2.1 下，CNTs/CA 的铜去除效率也很高，达到 69.9%。当铜的平衡浓度为 5mg/L 时，CNTs/CA 的铜吸附容量可达 67.9mg/g。
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