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Efficient and green process for industrial treatment of heavy metal wastewater is much needed. Herein, complexation-ultrafiltration using sodium polyacrylate (PAAS) as complexation agent was used to recover nickel from wastewater containing nickel by a rotating disk membrane module. The Ni2+ rejection could reach 98.26% at n < 848 rpm, pH = 7.0 and P/Ni = 13 (mass ratio). When n > 848 rpm, the...
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