4.7 Article

Novel cross-linked melamine based polyamine/CNT composites for lead ions removal

Journal

JOURNAL OF ENVIRONMENTAL MANAGEMENT
Volume 192, Issue -, Pages 163-170

Publisher

ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD
DOI: 10.1016/j.jenvman.2017.01.056

Keywords

Composite: polyamine/CNT composite; Adsorption; Wastewater treatment; Melamine; Lead (II) ions

Funding

  1. King Abdulaziz City for Science and Technology [AT-35-131]
  2. King Fahd University of Petroleum and Minerals

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A novel series of polyamine/CNT composites were synthesized via a single step polycondensation reaction of melamine, paraformaldehyde, various alkyldiamines and chlorinated carbon nanotubes (CNT) at optimized reaction conditions in the presence of N, N-Dimethyl formamide as a solvent. Chlorinated carbon nanotubes synthesized by reacting acidified CNT and thionyl chloride was used. The pure polymer (MFDH) and the functionalized composites (MFDH1, MFDH2, MFDH3 and MFDH4) having 0.01, 0.02, 0.05 and 0.1% weight of the starting precursors were used. The morphology, surface area, molecular structures and overall properties of the new series of polymers were characterized using Raman Spectroscopy, FFIR, C-13 NMR, X-ray diffraction experiments, BET and TGA. A comprehensive design was set up in order to evaluate the effects of pH, temperature, Lead ion initial concentrations and contact time on the ability of the new series of functionalized polymers for Lead (H) ion removal. Wastewater treatment revealed the high efficacy of the synthesized polyamine/CNT composite in the removal of 99% of Lead ions in wastewater samples. (C) 2017 Elsevier Ltd. All rights reserved.

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