Please use this identifier to cite or link to this item: https://doi.org/10.1016/j.watres.2011.01.003
Title: Design and fabrication of an innovative and environmental friendly adsorbent for boron removal
Authors: Wei, Y.-T.
Zheng, Y.-M. 
Chen, J.P. 
Keywords: Atom transfer radical polymerization
Boron
Chitosan
Electrostatic extrusion
N-Methylglucamine
Sorption
Issue Date: Mar-2011
Source: Wei, Y.-T., Zheng, Y.-M., Chen, J.P. (2011-03). Design and fabrication of an innovative and environmental friendly adsorbent for boron removal. Water Research 45 (6) : 2297-2305. ScholarBank@NUS Repository. https://doi.org/10.1016/j.watres.2011.01.003
Abstract: Boron can pose adverse effects on human beings and plants species. It exists in various water environments and is difficult to be removed by conventional technologies. In this study, an efficient and environmental friendly sorbent was fabricated by the functionalization of a natural biopolymer, chitosan, with N-methylglucamine through atom transfer radical polymerization. The SEM and BET studies revealed that the sorbent had a rougher surface and a more porous structure than the chitosan. At the optimum neutral pH, the maximum sorption capacity was as high as 3.25 mmol/g, much higher than the commercial boron selective resins (e.g., Amberlite IRA-743) and many other synthesized sorbents. Almost 90% of boron sorption occurred within 8 h and the equilibrium was established in 12 h, which was well described by an intraparticle surface diffusion model. The presence of sodium chloride and sodium nitrate had no effect on the boron removal. The boron concentration in seawater could be reduced to less than 0.5 mg/L from 4.8 mg/L when a sorbent dosage of 1.2 g/L was used. It was therefore concluded that the sorption technology from this study could be promising for boron removal from aqueous solutions. © 2011 Elsevier Ltd.
Source Title: Water Research
URI: http://scholarbank.nus.edu.sg/handle/10635/59004
ISSN: 00431354
DOI: 10.1016/j.watres.2011.01.003
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