Journal
ADSORPTION SCIENCE & TECHNOLOGY
Volume 36, Issue 3-4, Pages 982-998Publisher
SAGE PUBLICATIONS INC
DOI: 10.1177/0263617417737642
Keywords
Adsorption; wastewater treatment; adsolubilization; layered double hydroxide; regeneration
Funding
- 973 Program [2014CB932104]
- National Natural Science Foundation of China
- Fundamental Research Funds for the Central Universities [ZZ1501, YS1406]
- Program for Changjiang Scholars, Innovative Research Team in University [IRT1205]
- Program for New Century Excellent Talents in Universities
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In this work, lignosulfonate intercalated Mg2Al layered double hydroxide was fabricated by coprecipitation method, which was used as a functional adsorbent for removing pyridine from wastewater. The X-ray powder diffraction and Fourier transformed infrared were carried out to investigate the structure of the product. In the removal process, the as-prepared lignosulfonate intercalated Mg2Al layered double hydroxide sample exhibited good adsolubilization property for pyridine, with maximum capacity of 400.8 mg g(-1) in initial pyridine concentration of 400 mg/l and the removal percentage achieved about 87.9%. In addition, the influence of pH, time, and initial concentration of pyridine on the adsorption capacity was also examined. Moreover, the adsorption kinetic followed the pseudo-second-order model. Furthermore, after regeneration, the adsorbent can still show high adsorption capacity even for 10 cycles of desorption-adsorption. It hoped that lignosulfonate intercalated Mg2Al layered double hydroxide can be used as adsorbent for the removal of organic pollutants in wastewater.
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