Sorptive removal of Remazol Brilliant Blue R from aqueous solution by diethylenetriamine functionalized magnetic macro-reticular hybrid material

被引:85
作者
Elwakeel, K. Z. [1 ]
El-Bindary, A. A. [2 ]
Ismail, A. [1 ]
Morshidy, A. M. [3 ]
机构
[1] Port Said Univ, Fac Sci, Dept Environm Sci, Port Said, Egypt
[2] Damietta Univ, Fac Sci, Dept Chem, Dumyat 34517, Egypt
[3] Natl Inst Oceanog & Fisheries, Baltim, Kafr Elsheikh, Egypt
关键词
REACTIVE BLACK 5; DYE REMOVAL; EFFICIENT ADSORBENT; CHITOSAN COMPOSITES; CARBON NANOTUBES; ANIONIC DYES; WASTE-WATER; ADSORPTION; NANOPARTICLES; METAL;
D O I
10.1039/c5ra26508h
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
Chitosan (natural polymer), glycidyl methacrylate (synthetic polymer) and magnetite are combined to produce novel magnetic macro-reticular hybrid synthetic-natural materials. The amino group concentration in the obtained materials was enriched through two different modification routes to generate effective sorbents for Remazol Brilliant Blue R (RBBR) ions. These materials showed a higher affinity towards the uptake of RBBR ions from aqueous media: maximum sorption capacity reached 0.153 mmol g(-1) at pH 2.0 and at 25 degrees C. The nature of the interaction of RBBR with the sorbents was identified. The uptake kinetics and sorption isotherms were best described by the pseudo-second order rate equation and the Langmuir equation, respectively. The distribution coefficient was calculated at different temperatures and the thermodynamic parameters have been calculated: the sorption reaction is endothermic, spontaneous and increases the entropy of the system. Alkaline solution (0.5 M NaOH) was used for desorbing RBBR from loaded sorbents: a regeneration efficiency as high as 90-99% was obtained.
引用
收藏
页码:22395 / 22410
页数:16
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