东北大学学报（自然科学版）

东北大学学报(自然科学版) ›› 2007, Vol. 28 ›› Issue (10): 1489-1492.DOI: -

• 论著 • 上一篇    下一篇

真菌生物吸附剂对染料吸附脱色的研究

张丽芳;魏德洲;   

  1. 东北大学资源与土木工程学院;东北大学资源与土木工程学院 辽宁沈阳110004;辽宁沈阳110004
  • 收稿日期:2013-06-24 修回日期:2013-06-24 出版日期:2007-10-15 发布日期:2013-06-26
  • 通讯作者: Zhang, L.-F.
  • 作者简介:-
  • 基金资助:
    国家自然科学基金资助项目(50174014);;

Dye removal by fungal biosorption in aqueous solution

Zhang, Li-Fang (1); Wei, De-Zhou (1)   

  1. (1) School of Resources and Civil Engineering, Northeastern University, Shenyang 110004, China
  • Received:2013-06-24 Revised:2013-06-24 Online:2007-10-15 Published:2013-06-26
  • Contact: Zhang, L.-F.
  • About author:-
  • Supported by:
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摘要： 从空气中分离了一株高效脱色真菌,经初步鉴定为青霉属(Peniciliumsp.).研究了该青霉菌菌体对水溶液中阳离子染料孔雀绿的生物吸附作用.试验考察了染料结构、菌体预处理方法和溶液初始pH值对生物吸附作用的影响.结果表明,当孔雀绿染料质量浓度为50 mg/L时,未处理菌体的吸附量为29.3 mg/g,而经过NaHCO3预处理后,效果最佳,达到35.3 mg/g.反应体系中的pH值对菌体吸附剂吸附染料影响很大,当pH值为5时,其吸附能力最大.吸附平衡试验研究表明真菌对孔雀绿的吸附符合Langmuir和Freundlich模型.其最大吸附量可达555.6 mg/g.吸附动力学可用准二级动力学方程...

关键词: 青霉菌, 生物吸附, 孔雀绿, 吸附动力学, 染料

Abstract: A strain of iungus (Penicilium sp.) capable of high uptake for dyes was isolated from air to remove the cationic dye malachite green from aqueous solution and the effect of fungal biosorption on dye removal was investigated experimentally, including dye structures, pretreatment methods and initial pH values of the solution. The results showed that the adsorption quantity of untreated and NaHCO3-treated fungal mycelia as biosorbent are 29.3 and 35.3 mg/g if the concentration of the dye malachite green is 50 mg/L, respectively, and the latter has best effect. In the biosorption process the pH value plays an important role, and the maximum adsorbability can be obtained at pH value 5. The Langmuir and Freundlich models are able to describe the biosorption equilibrium of malachite green with the NaHCO3-treated fungal mycelia. The maximum uptake is 555.6 mg/g dry biomass. The dye biosorption process by fungal mycelia follows the pseudo second-order kinetics equation.

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