Highly effective lead (II) removal by sustainable alkaline activated β-lactoglobulin nanofibrils from whey protein
Author links open overlay panelQingruiZhangabShuaiqiZhangaZhixueZhaoaMengLiuaXiaofengYindYanpingZhouaYunWucQiumingPengb
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https://doi.org/10.1016/j.jclepro.2020.120297Get rights and content
Highlights
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We developed β-lactoglobulin nanofibrils from Whey protein.

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It exhibited a rapid Pb removal in 60 s.

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It revealed favorable adsorption and superior selectivity.

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Outstanding treated capacity of 22 m3 water/kg sorbent with regenerated property.


Abstract
　

In this work, we developed β-lactoglobulin nanofibrils by alkaline-thermal activation methods for Pb removal. The protein fibrils exhibited effective adsorption and selectivity for lead (II) removal, even with coexisting Ca2+/Mg2+/Na+ ions at higher concentrations. Kinetic results proved rapid Pb purification within 60 s. The nanofibrils effectively treated ∼22 m3 contaminated water/kg sorbent, far beyond effectiveness of a commercial ion exchange resin. The effluent from this process approached to the drinking water standard recommended by the World Health Organization (10 μg/L). These satisfactory performances can be ascribed to the ultrafine nanofibril structures and abundance of amino-acid species of protein. The simple fabrication and efficient performance of these nanofibrils make them highly capable of alleviating Pb contamination problems.

Highly effective lead (II) removal by sustainable alkaline activated β-lactoglobulin nanofibrils from whey protein - ScienceDirect
https://www.sciencedirect.com/science/article/pii/S0959652620303449