华南理工大学学报(自然科学版) ›› 2015, Vol. 43 ›› Issue (3): 130-136,150.doi: 10.3969/j.issn.1000-565X.2015.03.019

• 环境科学与技术 • 上一篇    下一篇

好氧颗粒污泥对水中橘黄的吸附特性

张彦灼 李军 李芸 陈光辉 卞伟   

  1. 北京工业大学 建筑工程学院∥水质科学与水环境恢复工程北京市重点实验室,北京 100124
  • 出版日期:2015-03-25 发布日期:2015-02-10
  • 通信作者: 李军(1964-),男,教授,博士生导师,主要从事污水处理理论与技术研究. E-mail: jglijun@bjut.edu.cn
  • 作者简介:张彦灼(1987-),男,博士生,主要从事污水处理理论与技术研究. E-mail: 83995983@ qq. com
  • 基金资助:
    国家水体污染控制与治理科技重大专项(2014ZX07406002)

Adsorption Property of Aerobic Granular Sludge for Sunset Yellow in Aqueous Solutions

Zhang Yan-zhuo Li Jun Li Yun Chen Guang-hui Bian Wei   

  1. College of Architecture and Civil Engineering∥Key Laboratory of Beijing for Water Quality Science and Water Environment Recovery Engineering,Beijing University of Technology,Beijing 100124,China
  • Online:2015-03-25 Published:2015-02-10
  • Contact: 李军(1964-),男,教授,博士生导师,主要从事污水处理理论与技术研究. E-mail: jglijun@bjut.edu.cn
  • About author:张彦灼(1987-),男,博士生,主要从事污水处理理论与技术研究. E-mail: 83995983@ qq. com
  • Supported by:
    Supported by the National Water Pollution Control and Treatment Science and Technology Major Project(2014ZX07406002)

摘要: 利用好氧颗粒污泥(AGS)对碱性染料橘黄(SY)进行吸附试验,研究了不同 pH值、吸附剂用量、SY 初始浓度和温度对吸附过程的影响. 发现:溶液的 pH 值是影响吸附效果的一个重要因素,pH 值为 2、AGS 用量为 2 g/L 和温度为 35℃时吸附效果最好;平衡吸附量与 SY 染料初始浓度呈正相关;Langmuir 吸附模型能够较好地描述整个吸附过程,饱和吸附量为 142. 86 mg/L,吸附动力学符合准二级动力学模型. 热力学分析表明吸附是一个自发的吸热过程,且低浓度比高浓度时的吸附亲合力好. 实验结果表明 AGS 可以作为吸附 SY 染料的低成本吸附剂.

关键词: 吸附, 动力学, 热力学, 好氧颗粒污泥, 橘黄

Abstract: The ability of aerobic granular sludge (AGS) to adsorb sunset yellow (SY) in aqueous solutions is inves-tigated,and the adsorption process affected by pH value,adsorbent dosage,initial SY concentration and tempera-ture is explored. The results show that (1) pH value is an important influencing factor of adsorption efficiency;(2) the best adsorption is achieved at a pH value of 2,an AGS dosage of 2 g/L and a temperature of 35℃;(3) the equilibrium adsorption capacity is positively correlated with the initial SY concentration; and (4) the equilibrium adsorption data accord the Langmuir model and the pseudo-second-order kinetic model well,with a saturated SY adsorption capacity of 142. 86 mg/L. Thermodynamic analysis indicates that the adsorption process is spontaneous and endothermic for dye,and that low SY concentration benefits the adsorption affinity. Thus,it comes to the conclusion that AGS can be used as a low-cost adsorbent for the removal of SY dye from wastewater.

Key words: adsorption, kinetics, thermodynamics, aerobic granular sludge, sunset yellow