Kim, Ki-Pal Ahmed, Zubair Song, Kyung-Guen Magram, Saleh F. Daoud, Maged H. H. Ahn, Kyu-Hong Paeng, Ki-Jung 2024-01-20T17:03:41Z 2024-01-20T17:03:41Z 2021-09-02 2011-05 0021-9592 https://pubs.kist.re.kr/handle/201004/130403 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 (H-1-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 degrees 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. English SOC CHEMICAL ENG JAPAN WASTE-WATER AQUEOUS-SOLUTIONS CA-ALGINATE REMOVAL PHOSPHORUS FILTRATION ADSORBENTS COAGULANT KINETICS FOAM Adsorption of Aluminum Ion from Water on Alginate-Modified Polyurethane Article 10.1252/jcej.10we154 1 JOURNAL OF CHEMICAL ENGINEERING OF JAPAN, v.44, no.4, pp.247 - 255 JOURNAL OF CHEMICAL ENGINEERING OF JAPAN 44 4 247 255 scie scopus 000290949200006 2-s2.0-79955517457 Engineering, Chemical Engineering Article WASTE-WATER AQUEOUS-SOLUTIONS CA-ALGINATE REMOVAL PHOSPHORUS FILTRATION ADSORBENTS COAGULANT KINETICS FOAM Alginate-Modified Polyurethane Aluminum Ion Adsorption Wastewater Reuse