形成形状规整的硫酸钡-染料杂化物：利用废弃染料进行环保型废水处理。
Formation of shaped barium sulfate-dye hybrids: waste dye utilization for eco-friendly treatment of wastewater.
机构信息
State Key Laboratory of Pollution Control and Resource Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai, 200092, China.
出版信息
Environ Sci Pollut Res Int. 2010 Jan;17(1):78-83. doi: 10.1007/s11356-009-0249-7.
PURPOSE
Owing to the present complexity and difficulty of concentrated dye wastewater treatment, this work aimed to synthesize a reproducible waste-sorbing material for the treatment of wastewater by forming the dye-conjugating complex hybrid.
METHODS
The inorganic/organic hybridization was applied to prepare the objective material by immobilizing waster dye-Mordant blue 9 (MB) with barium sulfate (BaSO4). The composition and pattern of the formed material were determined by spectrometry and characterized by SEM and XRD, and their formation process was clarified. The adsorption of cationic dye-basic blue BO (BB) and copper ion was investigated.
RESULTS
The hybrid of MB alone into growing BaSO4 formed the pineapple-like particles while that of the MB/BB-conjugating complex was the rhombus material. The adsorption of BB on the MB-BaSO4 hybrid was probably attributed to ion-pair equilibrium and that of Cu2+ may result from the complexation. The treatment of dye and heavy metal wastewaters indicated that the MB hybrid material removed 99.8% BB and 97% Cu2+ and the dye-conjugating hybrid with growing BaSO4 100% MB, 99.5% BB, and 44% Cu2+.
CONCLUSION
The waste MB-BaSO4 hybrid material is efficient to treat cationic dye and Cu2+ wastewater. The dye-conjugating hybridization method is the first to be advanced for in situ wastewater treatment, and it showed a combined effect for the removal of both organic dyes and heavy metals.
目的
由于目前集中染料废水处理的复杂性和难度，本工作旨在通过形成染料结合的复合杂化来合成一种可重复使用的废水吸附材料，以处理废水。
方法
通过用硫酸钡（BaSO4）固定废染料-媒染蓝 9（MB），应用无机/有机杂化来制备目标材料。通过光谱法确定形成材料的组成和图案，并通过 SEM 和 XRD 进行表征，阐明其形成过程。研究了阳离子染料碱性蓝 BO（BB）和铜离子的吸附。
结果
单独的 MB 杂化成生长的 BaSO4 形成了菠萝状颗粒，而 MB/BB 结合物的杂化则形成了菱形材料。BB 在 MB-BaSO4 杂化上的吸附可能归因于离子对平衡，而 Cu2+的吸附可能是由于络合作用。处理染料和重金属废水表明，MB 杂化材料去除了 99.8%的 BB 和 97%的 Cu2+，而 BaSO4 生长的染料结合杂化则去除了 100%的 MB、99.5%的 BB 和 44%的 Cu2+。
结论
废 MB-BaSO4 杂化材料对阳离子染料和 Cu2+废水的处理效果良好。染料结合杂化方法是首次提出的原位废水处理方法，它显示出了去除有机染料和重金属的协同作用。
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