Adsorption of Aluminum Ion from Water on Alginate-Modified Polyurethane

JOURNAL OF CHEMICAL ENGINEERING OF JAPAN

Saleh F. Magram²  Maged H. H. Daoud²  Ki-Jung Paeng¹  Kyung-Guen Song³  Kyu-Hong Ahn³  Zubair Ahmed²  Ki-Pal Kim³ 

[1] Department of Chemistry, Yonsei University;Department of Civil Engineering, King Abdul Aziz University;Center for Environmental Technology Research, Energy and Environment Research Division, Korea Institute of Science and Technology

关键词: Alginate-Modified Polyurethane;    Aluminum Ion;    Adsorption;    Wastewater Reuse;   

DOI  :  10.1252/jcej.10we154

来源: Maruzen Company Ltd

【 摘 要 】

References(40)Cited-By(2)A dual purpose absorbent Alginate-modified polyurethane (APU) has been prepared for the removal of residual aluminum ions by adsorption from treated wastewater. The structure of APU was confirmed by Fourier transform infrared (FT-IR) spectroscopy and proton nuclear magnetic resonance (1H-NMR) spectroscopy. Physical characterization was preformed according to the BET method. Surface analysis using SEM/EDS revealed that an average of 0.57% aluminum by weight was adsorbed on APU. The adsorption isotherm of aluminum for APU fitted well to the Freundlich model. The analysis kinetic data suggests that adsorption of aluminum follows pseudo-first-order kinetics. The adsorption of aluminum on APU increased slightly from 25 to 35°C, indicating endothermic adsorption. The activation energy of adsorption, 8.16 kJ/mol, characterizes the dominant chemiosorption nature of this adsorption. The optimum pH for aluminum adsorption on APU (applied pH: 3–8) was found to be within the pH range of wastewater effluent. The adsorption capacity of APU for aluminum using real wastewater effluent was 3.8 mg Al/g, which demonstrates the feasibility of applying APU to the treatment of water of complex compositions.

【 授权许可】

Unknown