Development of new hybrid nanosorption/ceramic microfiltration for Cu(II) removal

作者：Chooaksorn Wanida; Nitisoravut Rachnarin^*

来源：Desalination and Water Treatment, 2017, 63: 135-144.

DOI：10.5004/dwt.2017.20393

• Breakthrough curve
• Ceramic membrane
• Chitosan
• Metal removal
• Nano-adsorbent
• Thomas model

A new technique has been developed for Cu(II) removal using simultaneous filtration and adsorption by coating modified nanochitosan on a ceramic microfiltration membrane. It offers continuous operation and ease of chitosan nanoparticle usage without flow retardation. In this work, nanochitosan (CMCN), nanochitosan cross-linked with glutaraldehyde (CMCN-GLA), and polyethylene glycol (CMCN-PEG) were coated onto a microfiltration ceramic membrane, and then tested for Cu(II) removal performance. Among the three materials tested, CMCN-GLA provided the highest adsorption capacity of 240.3 mg/g at a flow rate of 2.5 mL/min. It is greater than a 30% improvement of adsorption capacity, as compared with native nanochitosan. This is about 2.4 times higher than a previous study on simultaneous adsorption-filtration. The experimental data was found to fit well with the Thomas model.

• 出版日期2017-2